pax_global_header00006660000000000000000000000064147450116640014522gustar00rootroot0000000000000052 comment=cc5ccd47e378be24cb3102aef38d4f02d41981c1 pwdsphinx-2.0.0-rc5/000077500000000000000000000000001474501166400142345ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/.github/000077500000000000000000000000001474501166400155745ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/.github/workflows/000077500000000000000000000000001474501166400176315ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/.github/workflows/hcodeql-analysis.yml000066400000000000000000000032151474501166400236150ustar00rootroot00000000000000name: "CodeQL" on: push: branches: [master, ] pull_request: # The branches below must be a subset of the branches above branches: [master] schedule: - cron: '0 22 * * 2' jobs: analyze: name: Analyze runs-on: ubuntu-latest steps: - name: Checkout repository uses: actions/checkout@v2 with: # We must fetch at least the immediate parents so that if this is # a pull request then we can checkout the head. fetch-depth: 2 # If this run was triggered by a pull request event, then checkout # the head of the pull request instead of the merge commit. - run: git checkout HEAD^2 if: ${{ github.event_name == 'pull_request' }} # Initializes the CodeQL tools for scanning. - name: Initialize CodeQL uses: github/codeql-action/init@v1 # Override language selection by uncommenting this and choosing your languages # with: # languages: go, javascript, csharp, python, cpp, java # Autobuild attempts to build any compiled languages (C/C++, C#, or Java). # If this step fails, then you should remove it and run the build manually (see below) - name: Autobuild uses: github/codeql-action/autobuild@v1 # ℹ️ Command-line programs to run using the OS shell. # 📚 https://git.io/JvXDl # ✏️ If the Autobuild fails above, remove it and uncomment the following three lines # and modify them (or add more) to build your code if your project # uses a compiled language #- run: | # make bootstrap # make release - name: Perform CodeQL Analysis uses: github/codeql-action/analyze@v1 pwdsphinx-2.0.0-rc5/GettingStarted.md000066400000000000000000000334241474501166400175140ustar00rootroot00000000000000# Getting started So you want to start using SPHINX for handling your passwords. Great, Welcome! First you need to decide if you want to host your own server (we call it oracle), or you want to use someone elses oracle. It's ok to use someone elses server, as we say the oracle can be hosted by your worst nightmare enemy, they will not learn anything about your passwords[1]. It is important to note, that if you want to use sphinx, your client needs to be able to connect to the oracle. ## Installing the sphinx CLI client If you are on debian or derivates a simple ``` % sudo apt install pwdsphinx ``` should suffice and you can skip over to the next section to configure the client. But before skipping you might also want to install these optional dependencies: ``` % apt install pinentry-gtk2 xdotool xinput ``` If you are not on debian derivates, you need to build two dependencies manually. Let's start with libsphinx: ``` % git clone https://github.com/stef/libsphinx % cd libsphinx/src % sudo apt install install python3 libsodium libsodium-dev % sudo PREFIX=/usr make install ``` We also need libequihash: ``` % git clone https://github.com/stef/equihash % cd equihash % sudo PREFIX=/usr make install ``` And finally install the client itself: ``` % pip install pwdsphinx ``` Dependencies might also needed for some things: ``` % apt install pinentry-gtk2 xdotool xinput ``` (replace `apt install` and the package names with whatever equivalent your distro provides) ## Configuring the sphinx CLI client Create a config file `~/.sphinxrc` and insert the correct address and port for the server (oracle) you are going to use: ``` [client] address = your.sphinx-server.tld port = 443 timeout = 3 ``` Now you should be ready to initialize your sphinx client: ``` % sphinx init ``` This will create a file `~/.sphinx/masterkey`, you should make a backup of this file, and if you intend to use sphinx on other devices sharing the same passwords on them, you must copy this file there as well. If you intend to use `androsphinx` our android sphinx client, you can also do: ``` sphinx qr key ``` And have this qr-code read by the androsphinx client to use the same config as you have setup here. You should be ready to go: ``` echo -n "password" | sphinx create testuser testhost ``` This should give you a long very random password as output. You can now check if you get the same password back, but since echoing passwords on the command line is not very smart, let's try with a tool that comes with pwdsphinx: `getpwd`: ``` getpwd | sphinx get testuser testhost ``` This should pop up a password query window, where you should enter 'password' as the password, the response should be the long random password that was returned when you used the create command. And you can now also try to delete this test password, as you surely don't want to litter around: ``` sphinx delete testuser testhost ``` You might wonder, why you don't need a password for deletion - that actually depends on the `rwd_keys` setting, read about that in the man page. However deletion does require that the masterkey in `~/.sphinx/` is actually correct. Now if you do again (being lazy and not using `getpwd`): ``` echo -n "password" | sphinx get testuser testhost ``` You should get an error. Congrats, you just setup sphinx! Read up in the man pages (https://github.com/stef/pwdsphinx/tree/master/man) more about how to get the most out of sphinx. ## Setting up a Firefox addon First install the sphinx CLI client - see the section above on more info on that. Then install the addon from the mozilla addons store: https://addons.mozilla.org/en-US/firefox/addon/websphinx/ The WebSphinx addon also requires the installation of a native messaging host - which is terminology and it really means backend. Websphinx consists of two parts, the frontend which is the addon. And the backend which handles everything. You can install the addon from the [firefox addon store](https://addons.mozilla.org/en-US/firefox/addon/websphinx/). The WebSphinx addon requires the installation of a native messaging host - which is terminology and it really means backend. You will need to install a graphical pinentry, - either sudo apt-get install pinentry-qt - or sudo apt-get install pinentry-gtk2 - or sudo apt-get install pinentry-gnome3 - or sudo apt-get install pinentry-fltk (or anything equivalent to apt-get install on your OS) And set the pinentry variant if it is not invoked with `/usr/bin/pinentry` in your sphinx config file in the `websphinx` section Your sphinx config file can be in a couple of locations: - globally: `/etc/sphinx/config` - for your user: `~/.sphinxrc` - or also:`~/.config/sphinx/config` - and always in the current directory. To set the pinentry path, add or modify to have a section like this: ``` [websphinx] pinentry=/usr/bin/pinentry-gtk-2 ``` ### Native Messaging Host Manifest Copy [*websphinx.json*](https://github.com/stef/websphinx-firefox/raw/master/websphinx.json), depending on your browser to finish the installation: - Linux/BSD - User only: `~/.mozilla/native-messaging-hosts/websphinx.json` - System-wide: `/usr/{lib,lib64,share}/mozilla/native-messaging-hosts/websphinx.json` - MacOS: `/Library/Application Support/Mozilla/NativeMessagingHosts/websphinx.json` You need to change *%PATH%* in *websphinx.json* so it refers to *websphinx.py* which came with pwdsphinx. 1. `mkdir -p ~/.mozilla/native-messaging-hosts` 2. `curl -Lo ~/.mozilla/native-messaging-hosts/websphinx.json https://github.com/stef/websphinx-firefox/raw/master/websphinx.json` if you followed this guide, `websphinx` should be installed in `/usr/bin` and you should replace the `%PATH%` in `~/.mozilla/native-messaging-hosts/websphinx.json` to `/usr/bin` so the file looks like this: ``` { "name": "websphinx", "description": "Host for communicating with pwdphinx", "path": "/usr/bin/websphinx", "type": "stdio", "allowed_extensions": [ "sphinx@ctrlc.hu" ] } ``` ### Final step Restart your browser in which the addon is installed and enjoy. ## Setting up a Chrome derivate addon (including ms edge, opera, brave, etc) Websphinx consists of two parts, the frontend which is the addon. And the backend which handles everything. First install the sphinx CLI client, see the above for more information on that. WebSphinx is not in the Chrome Web Store, if you want to install the addon follow these steps (this applies to all Operating Systems): 1. Create a directory on your filesystem containing the files in the websphinx directory. 2. Start your browser if it is not running, 3. open [chrome://extension](chrome://extension) in your browser, 4. enable `Developer Mode`, 5. `Load Unpacked Extension` and provide the directory created in step 1., 6. If all went well, you should get a yellowyish sphinx button. The WebSphinx addon requires the installation of a native messaging host - which is terminology and it really means backend. You will need to install a graphical pinentry, - either sudo apt-get install pinentry-qt - or sudo apt-get install pinentry-gtk2 - or sudo apt-get install pinentry-gnome3 - or sudo apt-get install pinentry-fltk (or anything equivalent to apt-get install on your OS) And set the pinentry variant if it is not invoked with `/usr/bin/pinentry` in your sphinx config file in the `websphinx` section Your sphinx config file can be in a couple of locations: - globally: `/etc/sphinx/config` - for your user: `~/.sphinxrc` - or also:`~/.config/sphinx/config` - and always in the current directory. To set the pinentry path, add or modify to have a section like this: ``` [websphinx] pinentry=/usr/bin/pinentry-gtk-2 ``` ### Native Messaging Host Manifest Copy [*websphinx.json*](https://github.com/stef/websphinx-firefox/raw/master/websphinx.json), depending on your browser to finish the installation: - Linux/BSD - Per-user: `~/.config/{google-chrome,chromium}/NativeMessagingHosts/websphinx.json` - System: `/etc/{opt/chrome,chromium}/native-messaging-hosts/websphinx.json` - MacOS - Per-user: `~/Library/Application Support/{Google/Chrome,Chromium}/NativeMessagingHosts/websphinx.json` - System-wide: `/Library/{Google/Chrome,Chromium}/NativeMessagingHosts/websphinx.json` You need to change *%PATH%* in *websphinx.json* so it refers to *websphinx.py* which came with pwdsphinx. Assuming you have chromium follow these steps (otherwise replace chromium with google-chrome, or even possibly opera?) 1. `mkdir -p ~/.config/chromium/NativeMessagingHosts` 2. `curl -Lo ~/.config/chromium/NativeMessagingHosts/websphinx.json https://github.com/stef/websphinx-chrom/raw/master/websphinx.json` if you followed this guide, `websphinx` should be installed in `/usr/bin` and you should replace the `%PATH%` in `~/.config/chromium/NativeMessagingHosts/websphinx.json` to `/usr/bin` so the file looks like this: ``` { "name": "websphinx", "description": "Host for communicating with Sphinx", "path": "/usr/bin/websphinx", "type": "stdio", "allowed_origins": [ "chrome-extension://ojbhlhidchjkmjmpeonendekpoacahni/" ] } ``` ### Final step Restart your browser in which the addon is installed and enjoy. ## Hosting your own oracle Great! You should host your own oracle, and make it available also to all your friends and family! The recommended way to do so is to dedicate cheap and small single-board-computer to this task, which does nothing else. An old Raspberry Pi 1 is enough, the oracle does not use much resources. ## Installation You need to install sphinx, either by using `pip`: ``` pip install pwdsphinx ``` or on Debian derivates: ``` apt install pwdsphinx ``` ### Getting a TLS certificate using nginx and letsencrypt First you need to generate an account and a domain key: ``` openssl genrsa 4096 > account.key openssl genrsa 4096 > domain.key ``` Then you neeed to create a certificate signing request (CSR) for your domains. For a single domain you can use: ``` openssl req -new -sha256 -key domain.key -subj "/CN=yoursite.com" > domain.csr ``` If you have multiple domains (like www.yoursite.com and yoursite.com) and a new openssl, then: ``` openssl req -new -sha256 -key domain.key -subj "/" -addext "subjectAltName = DNS:yoursite.com, DNS:www.yoursite.com" > domain.csr ``` Or if you have an old openssl < 1.1.1: ``` openssl req -new -sha256 -key domain.key -subj "/" -reqexts SAN -config <(cat /etc/ssl/openssl.cnf <(printf "[SAN]\nsubjectAltName=DNS:yoursite.com,DNS:www.yoursite.com")) > domain.csr ``` Now you need nginx, and a challenges director it can serve: ``` apt install nginx mkdir -p /var/www/challenges/ ``` The configuration of nginx is the following: ``` # Example for nginx server { listen 80; server_name yoursite.com www.yoursite.com; location /.well-known/acme-challenge/ { alias /var/www/challenges/; try_files $uri =404; } ...the rest of your config } ``` And finally use acme-tiny to get our signed certificate ``` apt install acme-tiny acme_tiny --account-key ./account.key --csr ./domain.csr --acme-dir /var/www/challenges/ > ./signed_chain.crt ``` Tada! you should have a file called `signed_chain.crt` which contains your cert, and the file `domain.key` which you generated at the beginning is your secret key for the oracle. ## Configuration When you have a TLS cert and key, you can start configuring the oracle. A full configuration file for the oracle looks as follows: ``` [server] # the IP address the server is listening on #address="127.0.0.1" # the port on which the server is listening, use 443 if available, so that # the oracle can be accessed from behind tight firewalls #port=2355 # ssl key - no default must be specified ssl_key="server.der" # ssl cert - no default must be specified ssl_cert="cert.pem" # tcp connection timeouts, increase in case you have bad networks, with the # caveat that this might lead to easier resource exhaustion - blocking all # workers. #timeout=3 # how many worker processes can run in parallel # max_kids=5 # the root directory where all data is stored #datadir= "/var/lib/sphinx" # whether to produce some output on the console #verbose=false # decay ratelimit after rl_decay seconds #rl_decay= 1800 # increase hardness after rl_threshold attempts if not decaying #rl_threshold= 1 # when checking freshness of puzzle solution, allow this extra # gracetime in addition to the hardness max solution time #rl_gracetime=10 ``` You need to set the `address` to whatever IP address you want the oracle to be listening on. And you should set the `port` if possible to 443, that will enable you to have always access to the oracle when you are on the go, since other ports might very well be firewalled, but port 443 is very-very rarely. You also need to set the `ssl_key` to the file `domain.key` , and the `ssl_cert` to the file `signed_chain.crt` both from the previous section "getting a tls cert..." The rest of the config settings you don't have to touch. When done, simply run `oracle`, this will start the server in the foreground. Use whatever your distro provides to daemonize and log the output of servers to have the server automatically started at reboot. Congratulations! Now invite your friends (and enemies!) to use your instance :) You might also want to setup the whole thing as a tor hidden service, so you can protect the privacy of your users even better, but how to do so is left as an exercise to the dear reader. [1] The only thing they can learn is the frequency how often you interact with a certain password, and which passwords belong to the same user and host, for example if you have an admin and a non-privileged account at the same host the oracle user could find out that these two are related. Also whoever is hosting the oracle can mount a denial-of-service against you by not responding or corrupting their answers. But your passwords would be safe, nevertheless. Even if their "database" leaks to the internet, or criminals. pwdsphinx-2.0.0-rc5/LICENSE000066400000000000000000001045131474501166400152450ustar00rootroot00000000000000 GNU GENERAL PUBLIC LICENSE Version 3, 29 June 2007 Copyright (C) 2007 Free Software Foundation, Inc. Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. 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Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The GNU General Public License is a free, copyleft license for software and other kinds of works. The licenses for most software and other practical works are designed to take away your freedom to share and change the works. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change all versions of a program--to make sure it remains free software for all its users. We, the Free Software Foundation, use the GNU General Public License for most of our software; it applies also to any other work released this way by its authors. You can apply it to your programs, too. When we speak of free software, we are referring to freedom, not price. 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But first, please read . pwdsphinx-2.0.0-rc5/MANIFEST.in000066400000000000000000000001531474501166400157710ustar00rootroot00000000000000include README.md include *.py include pwdsphinx/converters/*.py include man/*.1 include GettingStarted.md pwdsphinx-2.0.0-rc5/README.md000066400000000000000000000422021474501166400155130ustar00rootroot00000000000000 sphinx: a password **S**tore that **P**erfectly **H**ides from **I**tself (**N**o **X**aggeration) pwdsphinx is python wrapper around libsphinx - a cryptographic password storage as described in https://eprint.iacr.org/2015/1099 ## Also on Radicle To clone this repo on [Radicle](https://radicle.xyz), simply run: `rad clone rad:z3K5zSdfkoD6dytPhbk6v7mJLUojU` ## Dependencies You need [liboprf](https://github.com/stef/liboprf) and [libequihash](https://github.com/stef/equihash/) for the python reference frontend. You need also to install `pysodium` and `pyoprf` using either your OS package manager or pip. If you want to use also the websphinx browser extension you need to install also an X11 variant of pinentry from the gnupg project: - either `apt-get install pinentry-qt` - or `apt-get install pinentry-gtk2` - or `apt-get install pinentry-gnome3` - or `apt-get install pinentry-fltk` (or anything equivalent to `apt-get install` on your OS) If you want to store other "secrets" that are longer than just 30-40 bytes, you can install opaque-store: https://github.com/stef/opaque-store/ using `pip3 install opaquestore` which depends additionally on libopaque: https://github.com/stef/libopaque ## Installation `pip3 install pwdsphinx` should get you started. ## Server/Client Since the SPHINX protocol only makes sense if the "device" is somewhere else than where you type your password, pwdsphinx comes with a server implemented in python3 which you can host off-site from your usual desktop/smartphone. Also a client is supplied which is able to communicate with the server and manage passwords. Both the client and the server can be configured by any of the following files: - `/etc/sphinx/config` - `~/.sphinxrc` - `~/.config/sphinx/config` - `./sphinx.cfg` Files are parsed in this order, this means global settings can be overridden by per-user and per-directory settings. ### oracle - the server pwdsphinx comes with a python reference implementation of a extended sphinx server called oracle. The server can be "configured" by changing the variables in the `[server]` section of the config file. The `address` is the IP address on which the server is listening, default is `localhost` - you might want to change that. The `port` where the server is listening is by default 2355. `datadir` specifies the data directory where all the device "secrets" are stored, this defaults to "data/" in the current directory. You might want to back up this directory from time to time to an encrypted medium. `verbose` enables logging to standard output. `timeout` sets the timeout for any connection the server keeps open. `max_kids` sets the number maximum requests handled in parallel. The `timeout` config variable makes sure that all handlers are recycled in predictable time. `rl_decay` specifies the number of seconds after which a ratelimit level decays to an easier difficulty. `rl_threshold` increase the difficulty of ratelimit puzzles if not decaying. `rl_gracetime` gracetime in seconds added to the expcted time to solve a rate-limiting puzzle. Change these settings to fit your needs. Starting the server can be done simply by: ``` oracle ``` For more information see the man-page `oracle(1)` ### sphinx - the client This is the client that connects to the oracle to manage passwords using the extended sphinx protocol. #### Client Configuration The client can be configured changing the settings in the `[client]` section of the config file. The datadir (default: `~/.sphinx`) variable holds the location for your client parameters. Particularly it contains a masterkey which is used to derive secrets. The master key - if not available - is generated by issuing an init command. You **should** back up and encrypt this master key. `rwd_keys` toggles if the master password is required for authentication of management operations. If it is False it protects against offline master password bruteforce attacks - which is also a security guarantee of the original SPHINX protocol. The drawback is that for known (host,username) tuples the seeds/blobs can be changed/deleted by an attacker if the clients masterkey is available to them. But neither the master nor the account password can leak this way. This is merely a denial-of-service vector. If rwd_keys is True, then this eliminates the denial-of-service vector, but instead eliminates the offline-bruteforce guarantee of the SPHINX protocol. Note that the oracle is oblivious to this setting, this is purely a client-side toggle, in theory it is possible to have different settings for different "records" on the oracle. `validate_password` Stores a check digit of 5 bits in on the oracle, this helps to notice most typos of the master password, while decreasing security slightly. `userlist` option (default: True) can disable the usage of userlists. This prohibits the server to correlate all the records that belong to the same sphinx user relating to the same host. The cost of this, is that the user has to remember themselves which usernames they have at which host. For more detailed information consult the man-page `sphinx(1)` #### Operations The client provides the following operations: Create, Get, Change, Commit, Undo, List and Delete. All operations need a username and a site this password belongs to, even if they're only empty strings. #### Create password Creating a new password for a site is easy, pass your "master" password on standard input to the client, and provide parameters like in this example: ``` echo -n 'my master password' | sphinx create username example.com ulsd 0 ' !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' ``` The parameters to the client are `create` for the operation, then `username` for the username on the site `example.com` then a combination of the letters `ulsd` and the `0` for the size of the final password. The letters `ulsd` stand in order for the following character classes: `u` upper-case letters, `l` lower-case letters, `s` symbols and `d` for digits. The `s` is a short-cut to allow all of the symbols, if you have a stupid server that limits some symbols, you can specify the allowed symbols explicitly. Currently these are the symbols supported (note the leading space char): ``` !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ ``` Be careful, if you specify these on the command-line you'll have to escape the quotes you use for enclosing this list and possibly the backslash char that is also part of this list. In the `create username` example above the symbols are correctly escaped, in case you need to copy/paste them. If you do not provide password rules, they will be defaulting to 'ulsd' and length as long as possible. If the command runs successfully - the resulting new high-entropy password according to the given rules is printed to the console. In case for some reason you cannot use random passwords with your account, or you want to store a "password" that you cannot change, like a PIN code for example, or a passphrase shared with your colleagues, you can specify a maximum 44 character long password, that will be generated by the SPHINX client for you. In that case the command line looks like this (note the same syntax also works for the `change` operation) ``` echo -n 'my master password' | sphinx create username example.com "correct_battery-horse#staple" ``` In this case you cannot specify neither the accepted character classes, nor the size, nor symbols. Note1, since the master password is not used to encrypt anything, you can actually use different "master" passwords for different user/site combinations. Note2, using echo is only for demonstration, you should use something like this instead (getpwd is available from the contrib directory): ``` getpwd.sh | sphinx create username example.com ulsd 0 ``` #### Get password Getting a password from the sphinx oracle works by running the following command: ``` echo -n 'my master password' | sphinx get username example.com ``` Here again you supply your master password on standard input, provide the `get` operation as the first parameter, your `username` as the 2nd and the `site` as the 3rd parameter. The resulting password is returned on standard output. #### Change password You might want to (or are forced to regularly) change your password, this is easy while you can keep your master password the unchanged (or you can change it too, if you want). The command is this: ``` echo -en 'my master password\nnew masterpassword' | sphinx change username example.com 'ulsd' 0 ' !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' ``` Here again you supply your master password on standard input, but separated by a new-line you also provide the new master password. The new master password can be the same as the old, but can also be a new password if you want to change also the master password. You provide the `change` operation as the first parameter to the client, your `username` as the 2nd and the `site` as the 3rd parameter. You also can provide similar password generation rule parameters that were also used to create the original password, in case your account has new password rules and you want/have to accommodate them. Your new password is returned on standard output. #### Committing a changed password After changing the password, you will still get the old password when running `get`. To switch to use the new password you have to commit the changes with ``` echo -n 'my master password' | sphinx commit username example.com ``` #### Undoing a password commit If you somehow messed up and have to go back to use the old password, you can undo committing your password using: ``` echo -n 'my master password' | sphinx undo username example.com ``` #### Deleting passwords In case you want to delete a password, you can do using the following command: ``` echo -n "my master password" | sphinx delete username example.com ``` You provide the `delete` operation as the first parameter to the client, your `username` as the 2nd and the `site` as the 3rd parameter. This command does not provide anything on standard output in case everything goes well. #### QR code config In case you want to use phone with the same sphinx server, you need to export your config to the phone via a QR code. ``` sphinx qr ``` Will display a QR code containing only public information - like the server host and port, and if you use rwd_keys. This is mostly useful if you want to share your setup with a friend or family. If you want to connect your own phone to the setup used with pwdsphinx, you also need to export your client secret in the QR code: ``` sphinx qr key ``` This contains your client secret, and you should keep this QR code confidential. Make sure there is no cameras making copies of this while this QR code is displayed on your screen. If for whatever reason you want to display the QR code as an SVG, just append the `svg` keyword to the end of the `sphinx qr` command. ## OPAQUE-Store client-integration If you have opaque-store installed and configured correctly you get a number of additional operations, which allow you to store traditionally encrypted blobs of information. For a gentle introduction how this works using OPAQUE, have a look at this post: `https://www.ctrlc.hu/~stef/blog/posts/How_to_recover_static_secrets_using_OPAQUE.html` The following operations will be available if opaque-store is setup correctly: ```sh echo -n 'password' | sphinx store file-to-store echo -n 'password' | sphinx read echo -n 'password' | sphinx replace [force] file-to-store echo -n 'password' | sphinx edit [force] echo -n 'password' | sphinx changepwd [force] echo -n 'password' | sphinx erase [force] echo -n 'password' | sphinx recovery-tokens echo -n 'password' | sphinx unlock ``` ### How does OPAQUE-Store SPHINX integration work In all OPAQUE-Store operations we first execute a SPHINX get operation, that calculates the password which is used with OPAQUE. This means that the input passwords for OPAQUE will be the strongest possible and essentially un-bruteforcable on their own (without SPHINX). Of course online bruteforce attacks are still possible going through SPHINX. But OPAQUE is able to detect wrong passwords and thus can lock your record after a pre-configured amount of failed attempts. Of course this does not apply to the operator of an OPAQUE server, who can circumvent the locking of records. And thus: ### A Warning: don't let one entity control your SPHINX and OPAQUE-Store servers As you can see every opaque-store op needs a password on standard input. This password is run through SPHINX, and the output password is used in the OPAQUE protocol as the input password. This also means, that if you use a single server setup for both SPHINX and OPAQUE-Store, the two servers should not be controlled by the same entity, otherwise this entity is able to offline-bruteforce your SPHINX master password. If you use either of these services in a threshold setup, and these threshold servers are controlled by different entities, you should be ok, as long as no one controls a threshold number of oracles/servers. ### OPAQUE-Store CLI Parameters #### KeyId Every operation provided by the OPAQUE-Storage (O-S) integration needs a "keyid" parameter, this references your record stored by O-S. Internally the client uses the configuration value `id_salt`, together with the name of the O-S server to hash the keyid parameter into a record id for the O-S Server. This means, that if you lose or change your `id_salt` parameter or the name of the O-S server, all your record ids will be different and inaccessible. So it is a good idea to make a backup of your configuration file containing these. #### Forced operations In the case that you are using a threshold setup, some operations (`replace`, `edit`, `changepwd` and `erase`) require that all servers successfully participate in the operation. This is to avoid, that the records on temporarily unavailable servers remain unchanged and lead later possibly to corruption. If you are sure however that this is ok, you can provide a `force` parameter on the CLI which reduces the number of servers successfully participating to the value of your `threshold` configuration setting. ### Store an encrypted blob ```sh getpwd | sphinx store file-to-store ``` This simply does what it promises, stores the `file-to-store` encrypted on the OPAQUE-Store server, using a password derived from SPHINX. Note that this command outputs also a recovery-token, which you should keep safe in case your record gets locked. ### Retrieving an encrypted blob ```sh getpwd | sphinx read ``` Straightforward, no surprise. ### Overwrite an encrypted blob ```sh getpwd | sphinx replace [force] file-to-store ``` Whatever has been stored at `keyid` is now overwritten by an encrypted `file-to-store`. This only works, if there is already something stored at `keyid`. All servers must cooperate in this, if one or more are unavailable this will fail, unless `force` is specified and the threshold is matched, in which case the servers unavailable will be corrupted from this point on. ### Edit a file ```sh getpwd | sphinx edit [force] ``` This operation fetches the file stored at `keyid` loads it into your editor (specified by the `EDITOR` environment variable) and stores the changes and saved file back on the same `keyid` overwriting the original. ### Change your password ```sh getpwd | sphinx changepwd [force] ``` This operation does a full change of passwords and keys. Even if you don't change your own password that you provide to getpwd, SPHINX will change it's own key, and thus change the output password which will be used for the password in OPAQUE-store finally resulting in a whole new and fresh encryption key for your file which gets re-encrypted with that. ### Delete a stored file ```sh getpwd | sphinx erase [force] ``` Nothing surprising here, does what is written on the package. ### Get a recovery token ```sh getpwd | sphinx recovery-tokens ``` If your record is not locked, this operation gets you an additional recovery token, that you can use later to unlock your record, should it become locked. ### Unlock a locked record ```sh getpwd | sphinx unlock ``` If for some reason (someone online-bruteforcing your record, or you forgetting your master password) your record becomes locked by the servers, you can unlock it using a recovery token. ## X11 frontend You can find a bunch of shell-scripts that are based on `pinentry-(gtk|qt)`, `xinput`, `xdotool` and `dmenu`, the top-level entry to these is the `dmenu-sphinx.sh` script, which stores its history of entered hostnames in `~/.sphinx-hosts` - if the hosts are in any way sensitive, you might want to link this file to `/dev/null`. The `contrib/README.md` should give you an idea of how else to combine these scripts. ## Credits This project was funded through the NGI0 PET Fund, a fund established by NLnet with financial support from the European Commission's Next Generation Internet programme, under the aegis of DG Communications Networks, Content and Technology under grant agreement No 825310. Everlasting gratuity to asciimoo, dnet, jonathan and hugo for their contributions, patience, and support. pwdsphinx-2.0.0-rc5/configs/000077500000000000000000000000001474501166400156645ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/configs/chrome/000077500000000000000000000000001474501166400171415ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/configs/chrome/websphinx.json000066400000000000000000000003331474501166400220420ustar00rootroot00000000000000{ "name": "websphinx", "description": "Host for communicating with Sphinx", "path": "/usr/bin/websphinx", "type": "stdio", "allowed_origins": [ "chrome-extension://ojbhlhidchjkmjmpeonendekpoacahni/" ] } pwdsphinx-2.0.0-rc5/configs/config000066400000000000000000000041351474501166400170570ustar00rootroot00000000000000# the client section is only needed if you use the client functionality [client] # whether to produce some output on the console verbose = false # the ip address or hostname the server is listening on address = "127.0.0.1" # the port on which the server is listening port = 2355 # the directory where the client stores its master secret - you might want to # back this up datadir = "~/.sphinx/" # master password optional for authentication, if it is False it protects # against offline master pwd bruteforce attacks. The drawback is that for known # (host,username) tuples the seeds/blobs can be changed/deleted by an attacker # if the client masterkey is known # rwd_keys=False # stores a check digit of 5 bits in the rule blob, this helps to notice most # typos of the master password, while decreasing security slightly validate_password=true # the server section is only needed if you run the oracle yourself. [server] # the ipv4 address the server is listening on # address="127.0.0.1" # the port on which the server is listening, use 443 if available, so that # the oracle can be accessed from behind tight firewalls port=2355 # ssl key ssl_key="/etc/ssl/sphinx/server.der" # ssl cert ssl_cert="/etc/ssl/sphinx/cert.pem" # tcp connection timeouts, increase in case you have bad networks, with the # caveat that this might lead to easier resource exhaustion - blocking all # workers. #timeout=3 # how many worker processes can run in parallel # max_kids=5 # the root directory where all data is stored, default: /var/lib/sphinx datadir= "/var/lib/sphinx" # whether to produce some output on the console verbose=false # decay ratelimit after rl_decay seconds rl_decay= 1800 # increase hardness after rl_threshold attempts if not decaying rl_threshold= 1 # when checking freshness of puzzle solution, allow this extra # gracetime in addition to the hardness max solution time rl_gracetime=10 # the websphinx section is only needed if you use the browser webextensions [websphinx] # the path of your pinentry program pinentry="/usr/bin/pinentry" # a file where websphinx logs, this is only for dev/debug purposes log="" pwdsphinx-2.0.0-rc5/configs/firefox/000077500000000000000000000000001474501166400173265ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/configs/firefox/websphinx.json000066400000000000000000000002731474501166400222320ustar00rootroot00000000000000{ "name": "websphinx", "description": "Host for communicating with pwdphinx", "path": "/usr/bin/websphinx", "type": "stdio", "allowed_extensions": [ "sphinx@ctrlc.hu" ] } pwdsphinx-2.0.0-rc5/contrib/000077500000000000000000000000001474501166400156745ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/contrib/Makefile000066400000000000000000000031671474501166400173430ustar00rootroot00000000000000clean: install: $(DESTDIR)$(prefix)/usr/bin/dmenu-sphinx $(DESTDIR)$(prefix)/usr/bin/exec-on-click \ $(DESTDIR)$(prefix)/usr/bin/getpwd $(DESTDIR)$(prefix)/usr/bin/type-pwd \ $(DESTDIR)$(prefix)/usr/bin/otp.sphinx $(DESTDIR)$(prefix)/usr/bin/pass.sphinx \ $(DESTDIR)$(prefix)/usr/bin/user-pass-otp.sphinx $(DESTDIR)$(prefix)/usr/bin/user-pass.sphinx \ $(DESTDIR)$(prefix)/usr/bin/getacc-user-pass.sphinx \ $(DESTDIR)$(prefix)/usr/bin/sphinx-x11 $(DESTDIR)$(prefix)/usr/bin/sphage \ $(DESTDIR)$(prefix)/usr/share/doc/pwdsphinx-tools/README.x11.md $(DESTDIR)$(prefix)/usr/bin/dmenu-sphinx: dmenu-sphinx install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/exec-on-click: exec-on-click install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/getpwd: getpwd install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/type-pwd: type-pwd install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/sphinx-x11: sphinx-x11 install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/sphage: sphage install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/otp.sphinx: sphinx-scripts/otp.sphinx install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/pass.sphinx: sphinx-scripts/pass.sphinx install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/user-pass-otp.sphinx: sphinx-scripts/user-pass-otp.sphinx install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/user-pass.sphinx: sphinx-scripts/user-pass.sphinx install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/bin/getacc-user-pass.sphinx: sphinx-scripts/getacc-user-pass.sphinx install -D -m 0755 $< $@ $(DESTDIR)$(prefix)/usr/share/doc/pwdsphinx-tools/README.x11.md: README.md install -D -m 0644 $< $@ .PHONY: clean pwdsphinx-2.0.0-rc5/contrib/README.md000066400000000000000000000072661474501166400171660ustar00rootroot00000000000000# Simple UI tools for using pwdsphinx on X11 This directory contains tools that can be used on their own, or in concert to interact with pwdsphinx. ## getpwd (depends on pinentry) This is a simple script which uses `pinentry` from the gnupg project to query a password and write it out to standard output. Which `pinentry` variant you use, is up to you, it can be a curses, GTK+ or QT interface. This should be safer than echoing a password into pwdsphinx, since your password will not show up in your process list nor your command line history. Use it like this: ``` getpwd | sphinx get username hostname ``` ## exec-on-click.sh (depends on xinput) This is a simple shellscript that depends on `xinput`, which waits until a left-mouse click and then it executes whatever parameters the script has been called with. For example: ``` echo -n "hello world" | bin/exec-on-click.sh xdotool type --clearmodifiers '$(cat)' ``` Types `hello world` into the current window using xdotool. ## type-pwd.sh (depends on xdotool, exec-on-click and getpwd) This script combines `getpwd.sh`, `exec-on-click.sh` and the pwdsphinx client in such a way, that it securely queries for your master password, and then waits until you click somewhere (hopefully into a password entry field) and then sends the password as keystrokes. Using this mechanism you make sure your password is never on your clipboard where malware might steal it. And also it allows to enter your password on those braindead stupid sites that disable copy/pasting into password fields. Use it as such: ``` type-pwd.sh username hostname ``` and click in the password entry field where you want the password to be entered. ## dmenu-sphinx.sh (depends on dmenu, type-pwd.sh) This tool builds on type-pwd.sh, it uses dmenu in order to query a hostname, then depending if only one username or more are known by the oracle - if only one then the next step is skipped: provides a choice which username to use. Then `type-pwd.sh` invoked using the selected user and hostname. ## sphinx-x11 This is a simple "script" language interpreter that integrates the SPHINX CLI with X11. In the `sphinx-scripts` directory you can find 3 example scripts: - pass.sphinx - user-pass.sphinx - user-pass-otp.sphinx each of these scripts waits for the user to click, then they retrieve the relevant password (and TOTP token) before inserting it into the form fields, navigating between them with `tab` and `enter`. You are welcome to contribute adapted sphinx-scripts for websites that have other login semantics. As an example the `user-pass-otp.sphinx` script is explained below: ``` #!./sphinx-x11 wait-for-click user tab pwd tab enter wait-for-click otp enter ``` The first line specifies `sphinx-x11` as the interpreter. The script itself then waits for the user to click (line 3), then in line 4 inserts the `user` - which is specified as the first parameter to this script. Line 5 injects a `tab` so the next form field is selected. Then pwdsphinx/getpwd is used to get the password for `user` and `host` - the host being the 2nd parameter to this script. `enter` is used to submit this form in line 8. Since this is a new form the script waits (line 9) for the user to click in the field where the TOTP value needs to be inserted. Then in line 10 the TOTP value is queried using pwdsphinx/getpwd, and finally in the last line the TOTP value is submitted by injecting `enter` into the application. A note on the OTP support, in this interpreter/implementation an TOTP value is assumed to be stored with a username prefixed with `otp://`, so the first `pwd` operation uses e.g. `joe` as a username and then for the TOTP value it uses `otp://joe` as the username. pwdsphinx-2.0.0-rc5/contrib/dmenu-sphinx000077500000000000000000000005201474501166400202360ustar00rootroot00000000000000#!/usr/bin/env sh host=$(cat ~/.sphinx-hosts 2>/dev/null | dmenu -p hostname) tmp=$(mktemp) { echo $host; cat ~/.sphinx-hosts 2>/dev/null ; } | sort -u >$tmp && mv $tmp ~/.sphinx-hosts users=$(sphinx list $host) [[ "$(echo "$users" | wc -l)" -gt 1 ]] && user=$(echo $users | dmenu -p username) || user=$users type-pwd "$user" "$host" pwdsphinx-2.0.0-rc5/contrib/exec-on-click000077500000000000000000000010021474501166400202340ustar00rootroot00000000000000#!/usr/bin/env sh # depends on xinput MOUSEID=$(xinput --list --short | fgrep "Virtual core pointer" | sed 's/.*id=\([0-9]*\).*/\1/') THIS=$$ # wait until left mouse click exec 2>/dev/null xinput --test-xi2 --root $MOUSEID | while true; do read -t 1 line case "$line" in EVENT\ type\ 16\ \(RawButtonRelease\)) read -t 1 line read -t 1 details; case "$details" in detail:\ 1) pkill -P $THIS xinput ; exit ;; esac ;; esac done eval "${@}" ; pwdsphinx-2.0.0-rc5/contrib/getpwd000077500000000000000000000002421474501166400171120ustar00rootroot00000000000000#!/bin/sh prompt=${1:-sphinx} echo -en "SETTITLE sphinx password prompt\nSETPROMPT ${prompt} password\nGETPIN\n" | pinentry | grep '^D' | cut -c3- | tr -d '\n' pwdsphinx-2.0.0-rc5/contrib/sphage000077500000000000000000000121521474501166400170720ustar00rootroot00000000000000#!/usr/bin/env python3 # This file contains a copy of the reference implementation for # Bech32/Bech32m, which has this (c) notice: # # Copyright (c) 2017, 2020 Pieter Wuille # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. import sys, base64, pysodium from enum import Enum class Encoding(Enum): """Enumeration type to list the various supported encodings.""" BECH32 = 1 BECH32M = 2 CHARSET = "qpzry9x8gf2tvdw0s3jn54khce6mua7l" BECH32M_CONST = 0x2bc830a3 def bech32_polymod(values): """Internal function that computes the Bech32 checksum.""" generator = [0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3] chk = 1 for value in values: top = chk >> 25 chk = (chk & 0x1ffffff) << 5 ^ value for i in range(5): chk ^= generator[i] if ((top >> i) & 1) else 0 return chk def bech32_hrp_expand(hrp): """Expand the HRP into values for checksum computation.""" return [ord(x) >> 5 for x in hrp] + [0] + [ord(x) & 31 for x in hrp] def bech32_verify_checksum(hrp, data): """Verify a checksum given HRP and converted data characters.""" const = bech32_polymod(bech32_hrp_expand(hrp) + data) if const == 1: return Encoding.BECH32 if const == BECH32M_CONST: return Encoding.BECH32M return None def bech32_create_checksum(hrp, data, spec): """Compute the checksum values given HRP and data.""" values = bech32_hrp_expand(hrp) + data const = BECH32M_CONST if spec == Encoding.BECH32M else 1 polymod = bech32_polymod(values + [0, 0, 0, 0, 0, 0]) ^ const return [(polymod >> 5 * (5 - i)) & 31 for i in range(6)] def bech32_encode(hrp, data, spec=2): """Compute a Bech32 string given HRP and data values.""" combined = data + bech32_create_checksum(hrp, data, spec) return hrp + '1' + ''.join([CHARSET[d] for d in combined]) def bech32_decode(bech): """Validate a Bech32/Bech32m string, and determine HRP and data.""" if ((any(ord(x) < 33 or ord(x) > 126 for x in bech)) or (bech.lower() != bech and bech.upper() != bech)): return (None, None, None) bech = bech.lower() pos = bech.rfind('1') if pos < 1 or pos + 7 > len(bech) or len(bech) > 90: return (None, None, None) if not all(x in CHARSET for x in bech[pos+1:]): return (None, None, None) hrp = bech[:pos] data = [CHARSET.find(x) for x in bech[pos+1:]] spec = bech32_verify_checksum(hrp, data) if spec is None: return (None, None, None) return (hrp, data[:-6], spec) def convertbits(data, frombits, tobits, pad=True): """General power-of-2 base conversion.""" acc = 0 bits = 0 ret = [] maxv = (1 << tobits) - 1 max_acc = (1 << (frombits + tobits - 1)) - 1 for value in data: if value < 0 or (value >> frombits): return None acc = ((acc << frombits) | value) & max_acc bits += frombits while bits >= tobits: bits -= tobits ret.append((acc >> bits) & maxv) if pad: if bits: ret.append((acc << (tobits - bits)) & maxv) elif bits >= frombits or ((acc << (tobits - bits)) & maxv): return None return ret def decode(hrp, addr): hrpgot, data, spec = bech32_decode(addr) if hrpgot != hrp: return None decoded = convertbits(data, 5, 8, False) if decoded is None or len(decoded) < 2 or len(decoded) > 40: return None return decoded def encode(hrp, data): ret = bech32_encode(hrp, convertbits(data, 8, 5)) if decode(hrp, ret) == None: return None return ret def usage(help=False): print("usage: sphage.py [] <[32 bytes of cryptographic entropy] >key") if help: sys.exit(0) sys.exit(1) if __name__ == '__main__': rwd = sys.stdin.buffer.readline().rstrip(b'\n') if len(sys.argv)!=2: usage() op = sys.argv[1] if op in ('help', '-h', '--help'): usage(True) elif op == "pubkey": pk = pysodium.crypto_scalarmult_base(rwd) ret = encode("age", pk) elif op == "privkey": ret = encode('age-secret-key-', rwd).upper() else: usage() print(ret) pwdsphinx-2.0.0-rc5/contrib/sphage-test.sh000077500000000000000000000007421474501166400204620ustar00rootroot00000000000000#!/bin/sh set -e # simulate output from sphinx rwd=$(echo "asdf" | sha256sum | cut -d' ' -f 1 | rax2 -s) # convert rwd to age "identity" (privkey) privkey=$(mktemp) echo "$rwd" | python3 sphage privkey >"$privkey" # convert rwd to age "recipient" (pubkey) pubkey=$(echo -n "$rwd" | python3 sphage pubkey) # encrypt and decrypt hello world using the above key pair derived from rwd echo "hello world" | age -r $pubkey | age --decrypt -i "$privkey" # clean up rm -rf "$privkey" pwdsphinx-2.0.0-rc5/contrib/sphinx-scripts/000077500000000000000000000000001474501166400206725ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/contrib/sphinx-scripts/getacc-user-pass.sphinx000077500000000000000000000001151474501166400252730ustar00rootroot00000000000000#!/usr/bin/sphinx-x11 gethost getuser wait-for-click user tab pwd tab enter pwdsphinx-2.0.0-rc5/contrib/sphinx-scripts/otp.sphinx000077500000000000000000000000601474501166400227260ustar00rootroot00000000000000#!/usr/bin/sphinx-x11 wait-for-click otp enter pwdsphinx-2.0.0-rc5/contrib/sphinx-scripts/pass.sphinx000077500000000000000000000000641474501166400230760ustar00rootroot00000000000000#!/usr/bin/sphinx-x11 wait-for-click pwd tab enter pwdsphinx-2.0.0-rc5/contrib/sphinx-scripts/user-pass-otp.sphinx000077500000000000000000000001261474501166400246510ustar00rootroot00000000000000#!/usr/bin/sphinx-x11 wait-for-click user tab pwd tab enter wait-for-click otp enter pwdsphinx-2.0.0-rc5/contrib/sphinx-scripts/user-pass.sphinx000077500000000000000000000000751474501166400240540ustar00rootroot00000000000000#!/usr/bin/sphinx-x11 wait-for-click user tab pwd tab enter pwdsphinx-2.0.0-rc5/contrib/sphinx-x11000077500000000000000000000060721474501166400175470ustar00rootroot00000000000000#!/bin/sh set -e #set -x script="$1" user="$2" host="$3" MOUSEID=$(xinput --list --short | grep -F "Virtual core pointer" | sed 's/.*id=\([0-9]*\).*/\1/') x11_type() { xdotool type --clearmodifiers -- "$1" } wfc() { # wait until left mouse click THIS=$(exec sh -c 'echo "$PPID"') xinput --test-xi2 --root "$MOUSEID" | while true; do read -t 1 line || continue echo "$line" | /bin/grep -qs '^EVENT type 16 (RawButtonRelease)$' && { read -t 1 line read -t 1 line read -t 1 details; echo "$details" | /bin/grep -qs '^\s*detail: 1$' && { pkill -9 -e -P "$THIS" xinput >/dev/null break } } done 2>/dev/null } wait_for_click() { # wrapping wfc so that when xinput is killed the message "KILLED" is suppressed wfc >/dev/null 2>&1 } getpwd() { prompt=${1:-sphinx} printf "SETTITLE sphinx password prompt\nSETPROMPT %s password\nGETPIN\n" "${prompt}" | pinentry | grep '^D' | cut -c3- | tr -d '\n' } pwd() { getpwd "$user@$host" | { sphinx get "$user" "$host" || return ; } | xdotool type --clearmodifiers "$(head -1)" } otp() { getpwd "$user@$host" | { sphinx get "otp://$user" "$host" || return ; } | xdotool type --clearmodifiers "$(head -1)" } tab() { xdotool key --clearmodifiers Tab } enter() { xdotool key --clearmodifiers enter } xdoget() { title="$1" shift 1 printf '' | /usr/bin/xclip -i sleep 0.2 /usr/bin/xdotool key --window "$windowid" "$@" retries=0 while [ $retries -lt 3 ]; do sleep 0.2 x=$(/usr/bin/xclip -o) printf "%s" "$x" | /bin/grep -Eqs '^https?:.*' && { echo "$x" | cut -d'/' -f3 break } retries=$((retries+1)) done #[ $retries -ge 3 ] && { echo "failed to get host" >&2 ; false; } } gethost() { wait_for_click windowid=$(/usr/bin/xdotool getactivewindow) title=$(/usr/bin/xdotool getwindowname "$windowid" | /bin/sed -e 's/^ *//g;s/ *$//g') case "$title" in #*Pentadactyl|*Vimperator) host="$(xdoget "$title" Escape y)";; *Iceweasel|*Firefox) host="$(xdoget "$title" Escape ctrl+l ctrl+a ctrl+c Escape Tab)";; *Chromium) host="$(xdoget "$title" Escape ctrl+l ctrl+a ctrl+c Escape Tab)";; #*Uzbl\ browser*) host="$(xdoget "title" Escape y u)";; #luakit*) host="$(xdoget "title" shift+o Home ctrl+Right Right ctrl+shift+End ctrl+c Escape)";; esac #echo "$host" } getuser() { [ -z "$host" ] && { echo "no host" >&2; false; } users=$(sphinx list "$host") [ "$(echo "$users" | wc -l)" -gt 1 ] && user=$(echo $users | dmenu -p username) || user=$users #echo "$user" } cat "$script" | while read -r line; do case "$line" in type\ *) x11_type "${line##type }";; wait-for-click) wait_for_click;; user) x11_type "$user";; host) x11_type "$host";; pwd) pwd;; otp) otp;; tab) tab;; enter) enter;; gethost) gethost;; getuser) getuser;; esac done pwdsphinx-2.0.0-rc5/contrib/type-pwd000077500000000000000000000001631474501166400173730ustar00rootroot00000000000000#!/usr/bin/env sh getpwd "$1@$2" | sphinx get "$1" "$2" | exec-on-click xdotool type --clearmodifiers -- '$(cat)' pwdsphinx-2.0.0-rc5/ext/000077500000000000000000000000001474501166400150345ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/ext/.gitignore000066400000000000000000000000071474501166400170210ustar00rootroot00000000000000build/ pwdsphinx-2.0.0-rc5/ext/_locales/000077500000000000000000000000001474501166400166155ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/ext/_locales/en/000077500000000000000000000000001474501166400172175ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/ext/_locales/en/messages.json000066400000000000000000000003001474501166400217120ustar00rootroot00000000000000{ "extDescription": { "message": "Web extension for PITCHFORKed Sphinx" }, "sizePlaceholder": { "message": "Size" }, "searchPlaceholder": { "message": "User name " } } pwdsphinx-2.0.0-rc5/ext/background.js000066400000000000000000000145271474501166400175220ustar00rootroot00000000000000/* * This file is part of WebSphinx. * Copyright (C) 2018 pitchfork@ctrlc.hu * * WebSphinx is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * WebSphinx is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ "use strict"; const APP_NAME = "websphinx"; var browser = browser || chrome; var ports = {}; var nativeport = browser.runtime.connectNative(APP_NAME); var changeData = true; nativeport.onMessage.addListener((response) => { // internal error handling if (browser.runtime.lastError) { var error = browser.runtime.lastError.message; console.error(error); ports['popup'].postMessage({ status: "ERROR", error: error }); return; } // client error handling if(response.results == 'fail') { if(response.cmd) { response.results = {'error': true, 'id': response.id, 'cmd': response.cmd}; const tabId = Number(response.tabId); browser.tabs.sendMessage(tabId, response); } console.log('websphinx failed'); return; } // handle manual inserts if(response.results.mode == "manual") { //console.log("manual"); // its a manual mode response so we just pass it to the popup ports['popup'].postMessage(response); return; } // handle get current pwd if(response.results.cmd == 'login') { // 1st step in an automatic change pwd if(changeData==true) { // we got the old password changeData={password: response.results.password}; // now change the password response.results.cmd="change"; delete response.results['password']; // don't send the password back nativeport.postMessage(response.results); return; } let login = { username: response.results.name, password: response.results.password }; browser.tabs.executeScript({code: 'document.websphinx.login(' + JSON.stringify(login) + ');'}); return; } // handle webauthn create if(response.results.cmd == 'webauthn-create') { const tabId = Number(response.results.tabId); browser.tabs.sendMessage(tabId, response); return; } // handle webauthn get if(response.results.cmd == 'webauthn-get') { const tabId = Number(response.results.tabId); browser.tabs.sendMessage(tabId, response); return; } // handle list users if(response.results.cmd == 'list') { ports['popup'].postMessage(response); return; } // handle create password if(response.results.cmd == 'create') { let account = { username: response.results.name, password: response.results.password }; browser.tabs.executeScript({code: 'document.websphinx.create(' + JSON.stringify(account) + ');'}); return; } // handle change password if(response.results.cmd == 'change') { let change = { 'old': changeData, 'new': response.results } browser.tabs.executeScript({code: 'document.websphinx.change(' + JSON.stringify(change) + ');'}); changeData = false; return; } // handle commit result if(response.results.cmd == 'commit') { ports['popup'].postMessage(response); return; } console.log("unhandled native port response"); console.log(response); }); browser.runtime.onConnect.addListener(function(p) { ports[p.name] = p; if(p.name == 'popup') { // proxy from CS to native backend p.onMessage.addListener(function(request, sender, sendResponse) { // prepare message to native backend let msg = { cmd: request.action, mode: request.mode, site: request.site }; if(request.action!="list") msg.name=request.name; if (request.action == "login") changeData=false; if (request.action == "create") { msg.rules= request.rules; msg.size= request.size; } if (request.action == "change") { if(request.mode != "manual") { // first get old password // but this will trigger the login inject in the nativport onmessage cb changeData = true; msg.cmd= "login"; } } if(request.action!="login" && request.action!="list" && request.action!="create" && request.action!="change" && request.action!="commit") { console.log("unhandled popup request"); console.log(request); return; } // send request to native backend nativeport.postMessage(msg); }); } if(p.name == 'content-script') { p.onMessage.addListener(function(request, sender, sendResponse) { let msg = { cmd: request.action, mode: request.mode, site: request.site, challenge: request.params.challenge, name: request.params.username, id: request.id, }; nativeport.postMessage(msg); }); } }); // handle "synchronous" calls for webauthn chrome.runtime.onMessage.addListener( function(request, sender, sendResponse) { if(!request.action || !request.action.startsWith('webauthn')) { return; } let msg = {} const tabId = sender.tab.id; if(request.action == "webauthn-create") { msg = { cmd: request.action, mode: request.mode, site: request.site, clientDataJSON: request.params.clientDataJSON, challenge: request.params.challenge, name: request.params.username, userid: request.params.userid, id: request.id, tabId: tabId, }; } if(request.action == "webauthn-get") { msg = { cmd: request.action, mode: request.mode, site: request.site, clientDataJSON: request.params.clientDataJSON, challenge: request.params.challenge, pk: request.params.pk, name: request.params.username, userid: request.params.userid, id: request.id, tabId: tabId, }; } nativeport.postMessage(msg); } ); pwdsphinx-2.0.0-rc5/ext/build.sh000077500000000000000000000014731474501166400164770ustar00rootroot00000000000000#!/bin/sh SCRIPT=$(realpath "$0") BASEDIR=$(dirname "$SCRIPT") BUILDDIR="$BASEDIR/build" FFBUILDDIR="$BUILDDIR/ff" FFEXT="$BUILDDIR/ext_ff.zip" CHROMEBUILDDIR="$BUILDDIR/chrome" CHROMEEXT="$BUILDDIR/ext_chrome.zip" files="$BASEDIR/*js $BASEDIR/*html $BASEDIR/*css $BASEDIR/*png $BASEDIR/_locales/" [ ! -d "$BUILDDIR" ] && mkdir "$BUILDDIR" [ -d "$FFBUILDDIR" ] && rm -r "$FFBUILDDIR" [ -d "$CHROMEBUILDDIR" ] && rm -r "$CHROMEBUILDDIR" [ -f "$FFEXT" ] && rm "$FFEXT" [ -f "$CHROMEEXT" ] && rm "$CHROMEEXT" mkdir "$FFBUILDDIR" cp -r $files "$FFBUILDDIR" cp "$BASEDIR/manifest_ff.json" "$FFBUILDDIR/manifest.json" cd "$FFBUILDDIR" zip "$FFEXT" ./* cd - mkdir "$CHROMEBUILDDIR" cp -r $files "$CHROMEBUILDDIR" cp "$BASEDIR/manifest_chrome.json" "$CHROMEBUILDDIR/manifest.json" cd "$CHROMEBUILDDIR" zip "$CHROMEEXT" ./* cd - pwdsphinx-2.0.0-rc5/ext/content_script.js000066400000000000000000000034011474501166400204260ustar00rootroot00000000000000(() => { const br = chrome || browser; const s = document.createElement("script"); const src = br.runtime.getURL("webauthn.js"); //const bg = br.runtime.connect({'name': 'content-script'}); const site = window.location.hostname; let pagePorts = {}; s.setAttribute('src', src); s.setAttribute('id', "sphinx-webauthn-page-script"); (document.head || document.documentElement).appendChild(s); window.addEventListener('message', webauthnEventHandler); br.runtime.onMessage.addListener((m) => { let port = pagePorts[m.results.id]; port.postMessage(m.results); delete pagePorts[m.results.id]; }); function genId() { return Math.random().toString(32).slice(2) + Math.random().toString(32).slice(2); } function webauthnEventHandler(msg) { let options = msg.data; if(!options.type || options.type != "sphinxWebauthnEvent") { return; } if(msg.origin != window.origin) { console.log("invalid webauthnEvent sender"); return; } const site = window.location.hostname; // TODO let bgMsg = { "site": site, "action": options.action, "params": options.params, "id": genId(), }; pagePorts[bgMsg.id] = msg.ports[0]; br.runtime.sendMessage(bgMsg); //br.runtime.sendMessage(bgMsg).then( // function(response) { // console.log('response received from bg', response); // pagePort.postMessage(response); // }, // function(error) { // console.log('error received from bg', error); // pagePort.postMessage(error); // } //); } })(); pwdsphinx-2.0.0-rc5/ext/icon.png000066400000000000000000000105001474501166400164660ustar00rootroot00000000000000PNG  IHDR>asBIT|d pHYsuՀtEXtSoftwarewww.inkscape.org<IDATx] tTdY "V(bB VPJ[ąii՚P@˦ $9a޼73wwΜy}wm---p;b3<Zz3^ mLDp?CFQB!?*߃CBo[t"F"8*ʙ2֭[[Fם~㿞JRGE `}+u} "!kWaR]P&qCJpC0a*ҝ>;Q@q8'7Hme3gX𑖞3ھ_MmiyC^$R, K_PUrV~vμK6l+T4i սm@ \yFWcwA M.}Wv݁=:~PvS9lJ'Okp-@^ 泼Q`p!*?A(:ms̪N=KԞwH/* MpΓIj].iv=O2s]E \[ӽu]Yۮ!.{#qumM+v |!u|BR7͊1#ml}O/cǗBr|iV6>pZ{pB1fe?p~i5w*n6`V |M^oӻ37e:N9cʇMN x[A1ˋ#tf \?G#"Zg''a}}'<=f cY|oD=> oK_/']c: ,H?9YIѵ4BwlA4ܻqvH21>ZO<aP `&m ^^AnaN l03"ګorlaw.Y*&Y [|Jo83{Y}{Y[}ٛO> kc%jTRoDy^ɯ{yFWc9 a)vg8)w6&paY_Js(:wޒl7" |D}8 `5U QyrٱUfl[} pZa%iɒl:_I\fl[.8"`GySZHC҈ٹ|@V- Ǒ8kXBUZH:I]zG]U ,1bVr|ϤWFRT>f|=#-HbB]ۖF+/#1J E.RtYT63B E̜dlcBRhuhac2<R,x pH0*7sD%4Q.f ]TJpH02Yl{nsv84~m)pV@[Gz-3&/>,iD ycIO 2pv㭣?Ƌ',#-o˫ӊy"理wmbm4V[2чGe[.9ɌQ6a=p\+ yp(                  @qSr=WЍuu;¥',-DB[z]tGj˷y#-fB,o= 㾪k&0ؑpΡ Q۟Uh[KP oJ8GMȰߌӥo~֮Hg7T#T=c\ݱt =Qq-7esZ_@0DN;|WV6'_Zew %0B2cHIUc~/Pŵ䵶̾nF!Ɋ]Ҝuf&!>k`@Pnq~W|1z_7\|tH|}@u(} →KmvFۿAҞ.[пzWKsל8cʾ&ئp.҂Cpy5.V/N5)T- ǦN9y3יM_ZZp(O M+{G9xw[~G* 8'Ok&@C?c!!!_p{I-}pI/HBZQHun ڨ]:ᄔ3^f(?a[$J.8{ &Ijpڃ_LQlU[!?/O%|"Oۿ8T--Z7n2ArLUe9<-8Gx}(R@OFr~3{I;I&JCUDY$Hv I{#9K5)tQYG63dB,x!KQ 1%A/09i{l<0߀n<9m5sH KDK&~fOh IENDB`pwdsphinx-2.0.0-rc5/ext/inject.js000066400000000000000000000272711474501166400166570ustar00rootroot00000000000000/* * This file is part of WebSphinx. * Copyright (c) 2016 Danny van Kooten * Copyright (C) 2017 Iwan Timmer * Copyright (C) 2018 pitchfork@ctrlc.hu * * WebSphinx is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * WebSphinx is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ "use strict"; var browser = browser || chrome; (function(doc) { const FORM_MARKERS = [ "login", "log-in", "log_in", "signin", "sign-in", "sign_in" ]; const USERNAME_FIELDS = { selectors: [ "input[name*=user i]", "input[name*=login i]", "input[name*=email i]", "input[id*=user i]", "input[id*=login i]", "input[id*=email i]", "input[class*=user i]", "input[class*=login i]", "input[class*=email i]", "input[type=email i]", "input[type=text i]", "input[type=tel i]" ], types: ["email", "text", "tel"] }; const PASSWORD_FIELDS = { selectors: ["input[type=password i]"] }; const INPUT_FIELDS = { selectors: PASSWORD_FIELDS.selectors.concat(USERNAME_FIELDS.selectors) }; const SUBMIT_FIELDS = { selectors: [ "[type=submit i]", "button[name*=login i]", "button[name*=log-in i]", "button[name*=log_in i]", "button[name*=signin i]", "button[name*=sign-in i]", "button[name*=sign_in i]", "button[id*=login i]", "button[id*=log-in i]", "button[id*=log_in i]", "button[id*=signin i]", "button[id*=sign-in i]", "button[id*=sign_in i]", "button[class*=login i]", "button[class*=log-in i]", "button[class*=log_in i]", "button[class*=signin i]", "button[class*=sign-in i]", "button[class*=sign_in i]", "input[type=button i][name*=login i]", "input[type=button i][name*=log-in i]", "input[type=button i][name*=log_in i]", "input[type=button i][name*=signin i]", "input[type=button i][name*=sign-in i]", "input[type=button i][name*=sign_in i]", "input[type=button i][id*=login i]", "input[type=button i][id*=log-in i]", "input[type=button i][id*=log_in i]", "input[type=button i][id*=signin i]", "input[type=button i][id*=sign-in i]", "input[type=button i][id*=sign_in i]", "input[type=button i][class*=login i]", "input[type=button i][class*=log-in i]", "input[type=button i][class*=log_in i]", "input[type=button i][class*=signin i]", "input[type=button i][class*=sign-in i]", "input[type=button i][class*=sign_in i]" ] }; function queryAllVisible(parent, field, form) { var result = []; for (var i = 0; i < field.selectors.length; i++) { var elems = parent.querySelectorAll(field.selectors[i]); for (var j = 0; j < elems.length; j++) { var elem = elems[j]; // Select only elements from specified form if (form && form != elem.form) { continue; } // Ignore disabled fields if (elem.disabled) { continue; } // Elem or its parent has a style 'display: none', // or it is just too narrow to be a real field (a trap for spammers?). if (elem.offsetWidth < 30 || elem.offsetHeight < 10) { continue; } // We may have a whitelist of acceptable field types. If so, skip elements of a different type. if (field.types && field.types.indexOf(elem.type.toLowerCase()) < 0) { continue; } // Elem takes space on the screen, but it or its parent is hidden with a visibility style. var style = window.getComputedStyle(elem); if (style.visibility == "hidden") { continue; } // Elem is outside of the boundaries of the visible viewport. var rect = elem.getBoundingClientRect(); if ( rect.x + rect.width < 0 || rect.y + rect.height < 0 || (rect.x > window.innerWidth || rect.y > window.innerHeight) ) { continue; } // This element is visible, will use it. result.push(elem); } } return result; } function queryFirstVisible(parent, field, form) { var elems = queryAllVisible(parent, field, form); return elems.length > 0 ? elems[0] : undefined; } function form() { var elems = queryAllVisible(document, INPUT_FIELDS, undefined); var forms = []; for (var i = 0; i < elems.length; i++) { var form = elems[i].form; if (form && forms.indexOf(form) < 0) { forms.push(form); } } if (forms.length == 0) { return undefined; } if (forms.length == 1) { return forms[0]; } // If there are multiple forms, try to detect which one is a login form var formProps = []; for (var i = 0; i < forms.length; i++) { var form = forms[i]; var props = [form.id, form.name, form.className]; formProps.push(props); for (var j = 0; j < FORM_MARKERS.length; j++) { var marker = FORM_MARKERS[j]; for (var k = 0; k < props.length; k++) { var prop = props[k]; if (prop.toLowerCase().indexOf(marker) > -1) { return form; } } } } console.error( "Unable to detect which of the multiple available forms is the login form. Please submit an issue for browserpass on github, and provide the following list in the details: " + JSON.stringify(formProps) ); return forms[0]; } function find(field) { return queryFirstVisible(document, field, form()); } function update(field, value) { if (!value.length) { return false; } // Focus the input element first var el = find(field); if (!el) { return false; } var eventNames = ["click", "focus"]; eventNames.forEach(function(eventName) { el.dispatchEvent(new Event(eventName, { bubbles: true })); }); // Focus may have triggered unvealing a true input, find it again el = find(field); if (!el) { return false; } // Now set the value and unfocus el.setAttribute("value", value); el.value = value; eventNames = [ "keypress", "keydown", "keyup", "input", "blur", "change" ]; eventNames.forEach(function(eventName) { el.dispatchEvent(new Event(eventName, { bubbles: true })); }); return true; } function update_all(field, value) { if (!value.length) { return false; } let password_inputs = queryAllVisible(document, PASSWORD_FIELDS, form()); password_inputs.forEach(function(el) { let eventNames = ["click", "focus"]; eventNames.forEach(function(eventName) { el.dispatchEvent(new Event(eventName, { bubbles: true })); }); // Focus may have triggered unvealing a true input, find it again let pwd_inputs = queryAllVisible(document, PASSWORD_FIELDS, form()); pwd_inputs.forEach(function(el2) { // Now set the value and unfocus el2.setAttribute("value", value); el2.value = value; let eventNames = [ "keypress", "keydown", "keyup", "input", "blur", "change" ]; eventNames.forEach(function(eventName) { el2.dispatchEvent(new Event(eventName, { bubbles: true })); }); }); }); return true; } function set_pwd(el, value) { let eventNames = ["click", "focus"]; eventNames.forEach(function(eventName) { el.dispatchEvent(new Event(eventName, { bubbles: true })); }); // Focus may have triggered unvealing a true input, find it again //let pwd_inputs = queryAllVisible(document, PASSWORD_FIELDS, form()); // we ignore this for now //pwd_inputs.forEach(function(el2) { // Now set the value and unfocus el.setAttribute("value", value); el.value = value; eventNames = [ "keypress", "keydown", "keyup", "input", "blur", "change" ]; eventNames.forEach(function(eventName) { el.dispatchEvent(new Event(eventName, { bubbles: true })); }); //}); } class WebSphinx { recon() { var username = ''; var el = find(USERNAME_FIELDS); if(el) { username=el.value; } var password_inputs = queryAllVisible(document, PASSWORD_FIELDS, form()); browser.runtime.sendMessage({"username": username, "password_fields": password_inputs.length}); }; login(login) { update(USERNAME_FIELDS, login.username); update(PASSWORD_FIELDS, login.password); var password_inputs = queryAllVisible(document, PASSWORD_FIELDS, form()); if (password_inputs.length > 1) { // There is likely a field asking for OTP code, so do not submit form just yet password_inputs[1].select(); } else { window.requestAnimationFrame(function() { // Try to submit the form, or focus on the submit button (based on user settings) var submit = find(SUBMIT_FIELDS); if (submit) { submit.focus(); } else { // There is no submit button. We need to keep focus somewhere within the form, so that Enter hopefully submits the form. var password = find(PASSWORD_FIELDS); if (password) { password.focus(); } else { var username = find(USERNAME_FIELDS); if (username) { username.focus(); } } } }); } }; create(account) { update(USERNAME_FIELDS, account.username); update_all(PASSWORD_FIELDS, account.password); window.requestAnimationFrame(function() { // Try to submit the form, or focus on the submit button (based on user settings) var submit = find(SUBMIT_FIELDS); if (submit) { submit.focus(); } else { // There is no submit button. We need to keep focus somewhere within the form, so that Enter hopefully submits the form. var password = find(PASSWORD_FIELDS); if (password) { password.focus(); } } }); }; change(changed) { var pwd_inputs = queryAllVisible(document, PASSWORD_FIELDS, form()); if(pwd_inputs.length!=3) { console.log("wtf"); console.log(pwd_inputs); return; } set_pwd(pwd_inputs[0],changed.old.password); set_pwd(pwd_inputs[1],changed.new.password); set_pwd(pwd_inputs[2],changed.new.password); window.requestAnimationFrame(function() { // Try to submit the form, or focus on the submit button (based on user settings) var submit = find(SUBMIT_FIELDS); if (submit) { submit.focus(); } else { // There is no submit button. We need to keep focus somewhere within the form, so that Enter hopefully submits the form. var password = find(PASSWORD_FIELDS); if (password) { password.focus(); } } }); }; inject(pwd) { let el = document.activeElement; if(el.type=="password") { set_pwd(el, pwd); } } } doc.websphinx = new WebSphinx(); })(document); pwdsphinx-2.0.0-rc5/ext/manifest_chrome.json000066400000000000000000000023161474501166400210740ustar00rootroot00000000000000{ "key": "MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAiIpLogUg/aqfPydJjvRyxwUYME3LdoG6tHItPEYPPtquG60U1mFopkN2epr9HoyDEX334AsBkyxY6qxbQZZZVY+8xSPnJZhE/g7Cpo/eLvbX68avgavWp2/RCXjaW4BW06v4IcCKlI09jdWR7Oo33RGcsZer/FJTLiunoUl+6W5ap3KAry1JrLg5FwHYicaghwNrxM9zCDUbr0n7g7C7p/oHC/iCSmJgMZo5qA6sXfxxZgy2lTtB0M5y/NihbgeTvoF+GgJ9iFwfwIP4nyK6JPThRqCFguTQCMcvaqhMey9MjUC5aIZ2fRbuEV4XuyV+48jK5Dun/pDgXlzhmzjowwIDAQAB", "manifest_version": 3, "name": "WebSphinx", "description": "__MSG_extDescription__", "version": "0.1", "default_locale": "en", "background": { "service_worker": "background.js", "type": "module" }, "action": { "default_icon": "icon.png", "default_popup": "popup.html" }, "commands": { "_execute_action": { "suggested_key": { "default": "Ctrl+Shift+L" } } }, "host_permissions": [ "*://*/*" ], "content_scripts": [ { "matches": ["http://*/*", "https://*/*"], "js": ["content_script.js"], "run_at":"document_start" } ], "web_accessible_resources": [ { "resources": ["webauthn.js"], "matches": ["http://*/*", "https://*/*"] } ], "permissions": [ "activeTab", "nativeMessaging" ] } pwdsphinx-2.0.0-rc5/ext/manifest_ff.json000066400000000000000000000015201474501166400202060ustar00rootroot00000000000000{ "manifest_version": 2, "name": "WebSphinx", "description": "__MSG_extDescription__", "version": "0.1.1", "default_locale": "en", "applications": { "gecko": { "id": "sphinx@ctrlc.hu", "strict_min_version": "57.0" } }, "background": { "scripts": ["background.js"], "persistent": true }, "browser_action": { "default_icon": "icon.png", "default_popup": "popup.html" }, "commands": { "_execute_browser_action": { "suggested_key": { "default": "Ctrl+Shift+L" } } }, "content_scripts": [ { "matches": ["http://*/*", "https://*/*"], "js": ["content_script.js"], "run_at":"document_start" } ], "web_accessible_resources": ["webauthn.js"], "permissions": [ "scripting", "activeTab", "nativeMessaging", "" ] } pwdsphinx-2.0.0-rc5/ext/popup.css000066400000000000000000000022401474501166400167070ustar00rootroot00000000000000html, body { margin: 0; padding: 0; } body { min-width: 217px; } label, input[type="checkbox"] { margin-left: 10px; } input[type='text']#pwdlen { width: auto; padding: 10px; border: 0; box-sizing: border-box; } #search, input[type='text'] { width: 100%; padding: 10px; border: 0; box-sizing: border-box; } #search:focus, input[type='text']:focus { outline: 0; } #results { list-style-type: none; margin: 0; padding: 0; } #results:empty { display: none; } button.selected, button#close { width: auto; background-color: #fff; border-left: 1px solid black; border-right: 1px solid black; border-top: 1px solid black; box-shadow: none; text-align: left; padding: 10px; } button.inactive { width: auto; background-color: #aaa; border: 1px solid black; box-shadow: none; text-align: left; padding: 10px; } button.insert { width: 100%; color: blue; text-align: center; } button { width: 100%; background-color: #fff; border: 0; box-shadow: none; text-align: left; padding: 10px; } button:hover, button:focus, .focus button { outline: 0; background-color: #eee; } .hidden { display: none; } pwdsphinx-2.0.0-rc5/ext/popup.html000066400000000000000000000036531474501166400170740ustar00rootroot00000000000000

pwdsphinx-2.0.0-rc5/ext/popup.js000066400000000000000000000361271474501166400165460ustar00rootroot00000000000000/* * This file is part of WebSphinx. * Copyright (C) 2017 Iwan Timmer * Copyright (C) 2018 pitchfork@ctrlc.hu * * WebSphinx is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version. * * WebSphinx is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License along * with this program; if not, write to the Free Software Foundation, Inc., * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */ "use strict"; const APP_NAME = "websphinx"; var browser = browser || chrome; var self = null; class Sphinx { constructor() { this.selectionIndex = -1; this.site = ''; this.user = ''; this.users = []; this.mode = ''; this.inputs = 0; this.background = browser.runtime.connect({'name': 'popup'}); browser.tabs.query({ currentWindow: true, active: true }, this.onTabs.bind(this)); // tabs + close document.getElementById("login_tab").addEventListener("click",this.switchTab.bind(this)); document.getElementById("create_tab").addEventListener("click",this.switchTab.bind(this)); document.getElementById("change_tab").addEventListener("click",this.switchTab.bind(this)); document.getElementById("close").addEventListener("click",function() {window.close();}); // manual get/insert buttons document.getElementById("login_pwd").addEventListener("click",this.getpwd); document.getElementById("old_pwd").addEventListener("click",this.getpwd); document.getElementById("new_pwd").addEventListener("click",this.newpwd); document.getElementById("create_pwd").addEventListener("click",this.createpwd); document.getElementById('save_pwd').addEventListener("click", this.onClickCommit.bind(this)); let size_wdgt = document.getElementById("pwdlen"); size_wdgt.setAttribute("placeholder", browser.i18n.getMessage("sizePlaceholder")); size_wdgt.addEventListener("keydown", this.onKeyDownCreate); this.search = document.getElementById("search"); this.search.setAttribute("placeholder", browser.i18n.getMessage("searchPlaceholder")); this.search.addEventListener("blur", this.onBlur.bind(this)); self = this; } userList() { setTimeout(() => { this.search.focus(); }, 100); let ul = document.getElementById("results"); if(ul.firstChild == null && this.users.length>0) { for (let result of this.users) { let domain = result.split('/').reverse()[0]; let item = document.createElement("li"); let button = document.createElement("button"); //let favicon = document.createElement("img"); let label = document.createElement("span"); label.textContent = result; button.addEventListener("click", this.onClick.bind(this)); button.appendChild(label); item.appendChild(button); ul.appendChild(item); } results.className = null; } } commit_ui() { this.select_tab('change'); //document.getElementById("change_phase1").className = "hidden"; document.getElementById("change_phase2").className = null; document.getElementById("autofill").className = "hidden"; document.getElementById("results").className = "hidden"; } decide() { if(this.inputs == 1) { // one password field -> probably login // only one user in our db - use that to auto login this.select_tab('login'); if(this.users.length == 1) { this.background.postMessage({ "action": "login", "site": this.site, "name": this.users[0], "mode": "insert" }); //window.close(); return; } // user set in the forms user field, auto select that user for(let user of this.users) { if(user == this.user && user != '') { this.background.postMessage({ "action": "login", "site": this.site, "name": user, "mode": "insert" }); //window.close(); return; } } // can't decide let user select which username to use for login } else if(this.inputs == 2) { // 2 password fields -> either create user, or login with OTP field. if(this.users.length == 0) { // no users associated wit this site, should be a register form this.select_tab('create'); return; } // if there is already a user specified in the username field // and that is a registered user with us, then we assume it's a // login form for(let user of this.users) { if(user == this.user && user != '') { this.background.postMessage({ "action": "login", "site": this.site, "name": user, "mode": "insert" }); this.select_tab('login'); return; } } // unsure: could be a login form with an OTP field, but could also be a registration form. this.select_tab('create'); return; } else if(this.inputs == 3) { // probably change password field if(this.users.length == 0) { // no users associated wit this site, can't be a change password form // todo handle this case, but how? this.select_tab('create'); return; } if(this.users.length == 1) { // we have only one registered user with this site, so it's easy this.commit_ui(); this.background.postMessage({ "action": "change", "site": this.site, "name": this.users[0], "mode": "insert" }); //window.close(); return; } // choose user to change password for this.select_tab('change'); } else { console.log("are you kidding me?"); } } recon_cb(response) { browser.runtime.onMessage.removeListener(self.recon_cb); //console.log(response); self.user = response.username; self.inputs = response.password_fields; self.decide(); } get_users_cb(response) { self.background.onMessage.removeListener(self.get_users_cb); //console.log(response); if(response.results) { self.users = response.results.names; } // now also figure out what this page is about browser.tabs.executeScript({ file: '/inject.js', allFrames: true }, function() { browser.tabs.executeScript({code: 'document.websphinx.recon();'}); }); } onTabs(tabs) { // clear user list let results = document.getElementById("results"); while (results.firstChild) results.removeChild(results.firstChild); if (tabs[0] && tabs[0].url) { this.site = new URL(tabs[0].url).hostname; } browser.runtime.onMessage.addListener(this.recon_cb); this.background.onMessage.addListener(this.get_users_cb); // first get users associated with this site this.background.postMessage({ action: "list", mode: "init", site: this.site }); } onBlur(event) { let results = document.getElementById("results"); if (results.children[this.selectionIndex]) results.children[this.selectionIndex].className = ''; this.selectionIndex = -1; } commit_cb(response) { self.background.onMessage.removeListener(self.commit_cb); console.log(response); // todo better handling } onClickCommit(event) { this.background.onMessage.addListener(this.commit_cb); this.background.postMessage({ "action": "commit", "site": this.site, "name": this.user, "mode": "" }); window.close(); } onAutoClick(event) { self.background.postMessage({ "action": self.mode, "site": self.site, "name": self.search.value, "mode": "insert" }); } onClick(event) { this.background.postMessage({ "action": this.mode, "site": this.site, "name": event.target.textContent, "mode": "insert" }); if(this.mode != 'change') window.close(); else { this.user = event.target.textContent; this.commit_ui(); } } onKeyDown(event) { let results = document.getElementById("results"); if (event.keyCode == 0x0d) { if(self.search.value!='') { self.background.postMessage({ "action": self.mode, "site": self.site, "name": self.search.value, "mode": "insert" }); } else if(results.children[self.selectionIndex]) { self.background.postMessage({ "action": self.mode, "site": self.site, "name": results.children[self.selectionIndex].textContent, "mode": "insert" }); } if(self.mode != 'change') window.close(); else self.commit_ui(); } else if (event.keyCode == 0x26 && self.selectionIndex > 0) self.selectionIndex--; else if (event.keyCode == 0x28 && self.selectionIndex < results.childElementCount - 1) self.selectionIndex++; else return; for (let e of results.getElementsByClassName('focus')) e.className = ''; if(self.selectionIndex >= 0 && self.selectionIndex < results.childElementCount) { results.children[self.selectionIndex].className = "focus"; } event.preventDefault(); } flashError(el) { el.style="background: red;"; setTimeout(() => { el.focus(); }, 100); setTimeout(() => { el.style=''; }, 1000); } getpwdrules() { const rules = [{"title": "Upper", "value": 'u',}, {"title": "Lower", "value": 'l'}, {"title": "Symbols", "value": "s"}, {"title": "Digits", "value": "d"}]; // get character class rules let r = ""; for (let rule of rules) { let checkbox = document.getElementById(rule['title']); if(checkbox.checked) r+=rule['value']; } if(r=="") { for (let rule of rules) { let checkbox = document.getElementById(rule['title']); let label = checkbox.nextSibling; label.style="background: red;"; setTimeout(() => { checkbox.focus(); }, 100); setTimeout(() => { label.style=''; }, 1000); } return; } // get password size let size = 0; let input = document.getElementById('pwdlen'); if(input.value != '') { try { size = Number(input.value) } catch (e) { this.sizeError(input); return; } } if(isNaN(size)) { this.flashError(input); return; } return [r,size]; } submitCreate() { let r_ = self.getpwdrules(); if (r_ == null) return; let r=r_[0], size = r_[1]; if(self.user == '') { if(self.search.value == '') { self.flashError(self.search); return; } // we assume the value of the search field to be the username to be created self.user = self.search.value; } self.background.postMessage({ "action": "create", "site": self.site, "name": self.user, "rules": r, "size": size, "mode": "insert" }); window.close(); } onKeyDownCreate(event) { if (event.keyCode == 0x0d) { self.submitCreate(); event.preventDefault(); } } select_tab(tabid) { let tab = document.getElementById(tabid+'_tab'); this.switchTab({target: tab}); } switchTab(event) { if(this.mode==event.target.id.slice(0,-4)) return; // set mode this.mode = event.target.id.slice(0,-4); let autofill = document.getElementById("autofill"); let tabs = document.getElementById("tabs"); for (let selected of tabs.getElementsByClassName('selected')) { selected.className="inactive"; let tab = selected.id.slice(0,-4); document.getElementById(tab).className="hidden"; // remove event listeners if(tab == "create") { this.search.removeEventListener("keydown", this.onKeyDownCreate); autofill.removeEventListener("click", this.submitCreate); } else { this.search.removeEventListener("keydown", this.onKeyDown); autofill.removeEventListener("click", this.onAutoClick); } } event.target.className="selected"; let selected = document.getElementById(this.mode); selected.className=null; if(this.mode=="create") { document.getElementById("results").className = "hidden"; this.search.addEventListener("keydown", this.onKeyDownCreate); autofill.addEventListener("click", this.submitCreate); for(let u of this.users) { if(this.user == u) this.user = ''; if(this.search.value==u) this.search.value = ''; } if(this.user!='' && this.search.value=='') this.search.value=this.user; else if(this.user=='' && this.search.value!='') this.user=this.search.value; else if(this.user!='' && this.search.value!='' && this.user!=this.search.value) this.user=this.search.value; if(this.user == '') setTimeout(() => {this.search.focus();}, 100); else setTimeout(() => {document.getElementById("pwdlen").focus();}, 100); } else { this.search.addEventListener("keydown", this.onKeyDown); autofill.addEventListener("click", this.onAutoClick); this.userList(); if(this.user!='') this.search.value=this.user; let sf = false, uf = false; for(let u of this.users) { if(this.user == u) uf=true; if(this.search.value==u) sf=true; } if(sf && !uf) this.user=this.search.value; else if(!sf && uf) this.search.value=this.user; else if(sf && uf && this.user!=this.search.value) this.user=this.search.value; } if(this.user!='') { autofill.className = "insert"; } } fetchpwd(el, eh, mode, rules, size) { if(this.user == '') { if(this.search.value == '') { this.flashError(this.search); return; } // we assume the value of the search field to be the username to be created this.user = this.search.value; } // todo on change password when inserting new password also show save new password button let fetchpwd_cb = function(response) { self.background.onMessage.removeListener(self.fetchpwd_cb); el.getElementsByClassName('pwd_action')[0].textContent = "Insert"; el.removeEventListener("click", eh); el.addEventListener("click",function(e) { // inject response.password into currently focused element browser.tabs.executeScript({code: 'document.websphinx.inject(' + JSON.stringify(response.results.password) + ');'}); }); if(mode=="change") self.commit_ui(); } this.background.onMessage.addListener(fetchpwd_cb); this.background.postMessage({ "action": mode, "site": this.site, "name": this.user, "rules": rules, // optional only used with create "size": size, // optional only used with create "mode": "manual" }); // needed for background to trigger proper callback } getpwd(e) { self.fetchpwd(e.target, self.getpwd, "login", null, null); } newpwd(e) { self.fetchpwd(e.target, self.newpwd, "change", null, null); } createpwd(e) { let r_ = self.getpwdrules(); if (r_ == null) return; let r=r_[0], size = r_[1]; self.fetchpwd(e.target, self.createpwd, "create", r, size); } } document.addEventListener("DOMContentLoaded", function(event) { new Sphinx(); }); pwdsphinx-2.0.0-rc5/ext/webauthn.js000066400000000000000000000141431474501166400172120ustar00rootroot00000000000000// save original credential functions const browserCredentials = { create: navigator.credentials.create.bind(navigator.credentials), get: navigator.credentials.get.bind(navigator.credentials), }; // override credentials.create navigator.credentials.create = async function(args) { let options = args.publicKey; if(!options || !options.pubKeyCredParams) { // not webauthn call // TODO throw popop warning return await browserCredentials.create(options); } //algos: // -8: Ed25519 <- only supported // -7: ES256 // -257: RS256 let hasSupportedAlgo = false; for(let a of options.pubKeyCredParams) { if(a.alg == -8) { hasSupportedAlgo = true; break; } } if(!hasSupportedAlgo) { return await browserCredentials.create(options); } const host = window.location.hostname; options.challenge = arrayBufferToBase64(options.challenge); options["type"] = "webauthn.create"; options["origin"] = window.location.origin; // Required response fields const params = { 'challenge': options.challenge, 'username': options.user.name, 'userid': arrayBufferToBase64(options.user.id), 'clientDataJSON': JSON.stringify(options), }; let response = await createEvent("webauthn-create", params); response.clientDataJSON = JSON.stringify(options); let createObj = createCreateCredentialsResponse(response); return createObj; }; // override credentials.get navigator.credentials.get = async function(options) { if(!options && !options.publicKey) { // not webauthn call return await browserCredentials.get(options); } const pubKeyObj = options.publicKey; if(pubKeyObj['allowCredentials'].length == 0) { return await browserCredentials.get(options); } const key = pubKeyObj['allowCredentials'][0].id; options["type"] = "webauthn.get"; options["origin"] = window.location.origin; options["challenge"] = arrayBufferToBase64(pubKeyObj.challenge); // Required response fields const params = { 'pk': arrayBufferToBase64(key), 'challenge': arrayBufferToBase64(pubKeyObj.challenge), 'clientDataJSON': JSON.stringify(options), }; const response = await createEvent("webauthn-get", params); response.challenge = pubKeyObj.challenge; response.clientDataJSON = JSON.stringify(options); let getObj = createGetCredentialsResponse(response); return getObj; }; // initiate messaging with the backend async function createEvent(action, params) { let msg = { "type": "sphinxWebauthnEvent", "action": action, "params": params, }; const { port1: localPort, port2: remotePort } = new MessageChannel(); const promise = new Promise((resolve) => { localPort.onmessage = (event) => { resolve(event.data); } }); try { window.postMessage(msg, '*', [remotePort]); } catch(err) { console.log("Failed to send message to content script:", err); } let resp = await promise; return resp; } // create the response object of credentials.create function createCreateCredentialsResponse(res) { if(res.error) { return; } res.pk = res.pk.replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', ''); const credential = { id: res.pk, rawId: stringToBuffer(res.pk, true), type: "public-key", authenticatorAttachment: "platform", response: { // TODO attestationObject https://developer.mozilla.org/en-US/docs/Web/API/AuthenticatorAttestationResponse/attestationObject attestationObject: stringToBuffer(res.attestationObject, true), clientDataJSON: stringToBuffer(res.clientDataJSON), // A JSON string in an ArrayBuffer, representing the client data that was passed to CredentialsContainer.create() publicKeyAlgorithm: -8, transports: ["internal"], //getPublicKey: () => stringToBuffer(res.pk, true), //getPublicKeyAlgorithm: () => -8, //getTransport: () => "", //getAuthenticatorData: () => "", }, key: stringToBuffer(res.pk, true), getClientExtensionResults: () => {}, }; Object.setPrototypeOf(credential.response, AuthenticatorAttestationResponse.prototype); Object.setPrototypeOf(credential, PublicKeyCredential.prototype); credential.response.getTransports = () => credential.response.transports; credential.response.getPublicKey = () => credential.rawId; credential.response.getPublicKeyAlgorithm = () => -8; credential.response.getAuthenticatorData = () => stringToBuffer(res.authData, true); return credential; } // create the response object of credentials.get function createGetCredentialsResponse(res) { if(res.error) { return; } res.pk = res.pk.replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', ''); const credential = { id: res.pk, rawId: stringToBuffer(res.pk, true), challenge: res.challenge, response: { clientDataJSON: stringToBuffer(res.clientDataJSON), // A JSON string in an ArrayBuffer, representing the client data that was passed to CredentialsContainer.create() authenticatorData: stringToBuffer(res.authData, true), signature: stringToBuffer(res.sig, true), userHandle: res.userid, }, type: "public-key", authenticatorAttachment: null, } credential.getClientExtensionResults = () => {}; return credential; } function stringToBuffer(s, isB64) { if(!s) { return new Uint8Array(0); } if(isB64) { s = atob(s.replaceAll('-', '+').replaceAll('_', '/')); } const arr = Uint8Array.from(s, c => c.charCodeAt(0)); return arr.buffer; } function arrayBufferToBase64(buffer) { let binary = ''; const bytes = new Uint8Array( buffer ); for (let i = 0; i < bytes.byteLength; i++) { binary += String.fromCharCode(bytes[i]); } return toBase64(binary); } function toBase64(s) { return window.btoa(s).replaceAll('+', '-').replaceAll('/', '_').replaceAll('=', ''); } pwdsphinx-2.0.0-rc5/man/000077500000000000000000000000001474501166400150075ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/man/bin2pass.md000066400000000000000000000033371474501166400170600ustar00rootroot00000000000000% bin2pass(1) | converts binary input to passwords # NAME bin2pass - converts binary input to passwords # SYNOPSIS ``` bin2pass [d|u|l] [] [] ?@[\]^_`{}~ ``` Please note that is allowed, and also be careful in quoting special characters that might be interpreted by your shell, such as `"`, `!`, `\`, etc... # EXAMPLES Generate the longest possible random password from /dev/random, with the resulting password having characters from digits, lower- and upper-case letters and the and * symbols. ``` dd if=/dev/random bs=1 count=32 | ./pwdsphinx/bin2pass.py " *" ``` # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)` pwdsphinx-2.0.0-rc5/man/dmenu-sphinx.md000066400000000000000000000021171474501166400177510ustar00rootroot00000000000000% dmenu-sphinx(1) | dmenu-frontend for retrieving and inserting passwords from sphinx(1) into X11 applications # NAME dmenu-sphinx - dmenu-frontend for retrieving and inserting passwords from sphinx(1) into X11 applications # SYNOPSIS ``` type-pwd username hostname ``` # DESCRIPTION This tool builds on `type-pwd(1)`, it uses `dmenu(1)` in order to query a hostname, then depending if only one or more usernames are known by the oracle - if only one then the next step is skipped: provides a choice which username to use. Then `type-pwd(1)` is invoked using the selected user and hostname. This tool cashes the hostnames it was used with in the file `~/.sphinx-hosts`. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)`, `type-pwd(1)`, `exec-on-click(1)`, `getpwd(1)` pwdsphinx-2.0.0-rc5/man/exec-on-click.md000066400000000000000000000016241474501166400177550ustar00rootroot00000000000000% exec-on-click(1) | simple tool that executes command when a left mouse-click is detected # NAME exec-on-click - simple tool that executes command when a left mouse-click is detected # SYNOPSIS ``` exec-on-click ``` # DESCRIPTION This is a simple tool which waits until a left-mouse click and then it executes whatever parameters the script has been called with. # EXAMPLE ``` echo -n "hello world" | exec-on-click xdotool type --clearmodifiers '$(cat)' ``` Types `hello world` into the current window using xdotool. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)` pwdsphinx-2.0.0-rc5/man/getpwd.md000066400000000000000000000021271474501166400166250ustar00rootroot00000000000000% getpwd(1) | simple tool that queries a password from a user and writes it to standard output # NAME getpwd - simple tool that queries a password from a user and writes it to standard output # SYNOPSIS ``` getpwd ["prompt"] | sphinx get username hostname ``` # DESCRIPTION This is a simple script which uses `pinentry` from the gnupg project to query a password and write it out to standard output. Which `pinentry` variant you use, is up to you, it can be a curses, gtk or qt interface. This should be safer than echoing a password into pwdsphinx, since your password will not show up in your process list nor your command line history. The only parameter this tool takes is a prompt to display when asking for the password. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)` pwdsphinx-2.0.0-rc5/man/makefile000066400000000000000000000020371474501166400165110ustar00rootroot00000000000000all: sphinx.1 oracle.1 bin2pass.1 websphinx.1 getpwd.1 exec-on-click.1 type-pwd.1 dmenu-sphinx.1 sphinx-x11.1 sphage.1 \ otp.sphinx.1 pass.sphinx.1 user-pass-otp.sphinx.1 user-pass.sphinx.1 getacc-user-pass.sphinx.1 install: $(PREFIX)/share/man/man1/sphinx.1 $(PREFIX)/share/man/man1/oracle.1 $(PREFIX)/share/man/man1/bin2pass.1 \ $(PREFIX)/share/man/man1/getpwd.1 $(PREFIX)/share/man/man1/exec-on-click.1 $(PREFIX)/share/man/man1/type-pwd.1 \ $(PREFIX)/share/man/man1/dmenu-sphinx.1 $(PREFIX)/share/man/man1/sphinx-x11.1 $(PREFIX)/share/man/man1/sphage.1 \ $(PREFIX)/share/man/man1/websphinx.1 $(PREFIX)/share/man/man1/otp.sphinx.1 $(PREFIX)/share/man/man1/pass.sphinx.1 \ $(PREFIX)/share/man/man1/user-pass-otp.sphinx.1 $(PREFIX)/share/man/man1/user-pass.sphinx.1 clean: rm -f *.1 otp.sphinx.1: sphinx-x11.1 ln -s $< $@ pass.sphinx.1: sphinx-x11.1 ln -s $< $@ user-pass-otp.sphinx.1: sphinx-x11.1 ln -s $< $@ user-pass.sphinx.1: sphinx-x11.1 ln -s $< $@ getacc-user-pass.sphinx.1: sphinx-x11.1 ln -s $< $@ %.1: %.md pandoc -s -o $@ $< pwdsphinx-2.0.0-rc5/man/oracle.md000066400000000000000000000101511474501166400165740ustar00rootroot00000000000000% oracle(1) | server for the SPHINX password manager # NAME oracle - server for the SPHINX password manager # SYNOPSIS `oracle [init]` # DESCRIPTION The SPHINX protocol only makes sense if the server (called oracle) is somewhere else than where you type your password, pwdsphinx comes with a server implemented in python3 which you can host off-site from your usual desktop/smartphone. The server can be started simply by running `oracle` it does not take any parameters. # CONFIGURATION The server can be configured by any of the following files: - `/etc/sphinx/config` - `~/.sphinxrc` - `~/.config/sphinx/config` - `./sphinx.cfg` Files are parsed in this order, this means global settings can be overridden by per-user and per-directory settings. The server can be configured by changing the variables in the `[server]` section of the config file. The `address` is the IP address on which the server is listening, default is `localhost` - you might want to change that. The `port` where the server is listening is by default 2355. Another recommended values is to use port 433 which is allowed by most firewalls while 2355 is not. `ssl_key` and `ssl_cert` must be specified, they point at a traditional TLS certificate and secret key file. It is recommended to not use self-signed certs, but to use certs that signed by CAs that are recognized widely by browsers and other TLS clients. `datadir` specifies the data directory where all the device "secrets" are stored, this defaults to "data/" in the current directory. You might want to back up this directory from time to time to an encrypted medium. `verbose` enables logging to standard output. `timeout` sets the timeout for any connection the server keeps open. `max_kids` sets the number maximum requests handled in parallel. The `timeout` config variable makes sure that all handlers are recycled in predictable time. `rl_decay` specifies the number of seconds after which a ratelimit level decays to an easier difficulty. `rl_threshold` increase the difficulty of ratelimit puzzles if not decaying. `rl_gracetime` gracetime in seconds added to the expected time to solve a rate-limiting puzzle. `ltsigkey` a path pointing at a long-term signature private key. This can be generated by running `oracle init`. # Initializing an oracle Given a configuration, the oracle can generate its own long-term signature key. To do so, simply run `oracle init` and it will store the private key at the location pointed by the `ltsigkey` configuration value. This operation will also output the public key, at the same location as the private key, but with a `.pub` extension. Furthermore the public key is also displayed as a Base64 encoded string on the standard output. # SECURITY CONSIDERATIONS The configuration values `max_kids` and `timeout` can be used to tune how many requests are served in parallel and how long each request is allowed to take before it gets killed. An attacker might be able to run a denial-of-service attack against your server, by keeping all `max_kids` connections "occupied". Since the server does only know about failed authorizations for management operations, but not about correctness of master passwords for get requests, there is no way to mitigate master password bruteforce attempts aside from ratelimiting. By tuning the configuration variables starting with `rl_` it is possible to configure this. If you have clients that have less than 1G RAM, it might be possible to increase the difficulty to the maximum level where those devices will not be able to solve the ratelimting puzzles. Rate-limiting in general should not be noticeable, only if dozens of get requests are served to the same record. At the highest level the solution should take about 20-40 seconds (depending on your cpu). # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2024 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)`, `getpwd(1)` pwdsphinx-2.0.0-rc5/man/sphage.md000066400000000000000000000015471474501166400166070ustar00rootroot00000000000000% sphage(1) | converts 32 bytes binary data into an age(1) keypair # NAME sphage - converts 32 bytes binary data into an age(1) keypair # SYNOPSIS ``` echo "32 byte high-entropy string....." | sphage privkey >/tmp/privatekey echo "32 byte high-entropy string....." | sphage pubkey >/tmp/pubkey ``` # DESCRIPTION This is a converter that is meant to convert the raw output of `sphinx(1)` into a key-pair that can be used by `age(1)` allowing for more sophisticated secrets manager setups. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)` pwdsphinx-2.0.0-rc5/man/sphinx-x11.md000066400000000000000000000117221474501166400172540ustar00rootroot00000000000000% sphinx-x11(1) | simple script interpreter for integrating password managers with X11 # NAME sphinx-x11 - simple script interpreter for integrating password managers with X11 # DESCRIPTION `sphinx-x11(1)` is a simple "script" language interpreter that integrates the SPHINX CLI with X11. # SPHINX-SCRIPT PARAMETERS All `sphinx-x11(1)` scripts expect a username and a hostname as the first and second parameter respectively. # VOCABULARY - `type "text..."`: types the text into the currently focused X11 window. - `wait-for-click`: waits until the user clicks anywhere. - `user`: types the username - usually given as the first parameter to the sphinx-script - into the currently focused X11 window. - `host`: types the hostname - usually given as the second parameter to the sphinx-script - into the currently focused X11 window. - `pwd`: gets a password using `getpwd(1)` and `sphinx(1)`, and types it into the currently focused X11 window. - `otp`: calculates the current TOTP pin code using the a TOTP secret stored in `sphinx(1)` using `getpwd(1)` , which is then typed into the currently focused X11 window. - `tab`: types a tabulator into the current X11 window, possibly advancing between form-fields. - `enter`: sends an enter key press to the currently focused X11 window, possibly submitting a form. - `gethost`: waits for a left mouse-click on a browser window, and then copies the URL from the urlbar into the clipboard, and then strips it down to the hostname and sets an internal "$host" variable that can then be used with `host` or `pwd`. - `getuser` dispatches a `sphinx list $host` and if more than one user is returned, offers them in a dmenu widget, if/when one user is found/selected it is set as an internal `$user` variable which can then used for verbs like `user` or `pwd`. Any lines not consisting of these tokens are simply ignored. # OTP SUPPORT In this interpreter/implementation a TOTP value is assumed to be stored with a username prefixed with `otp://`, so that a regular login name can co-exist with the according TOTP secret in sphinx. For example in a common 2FA login the first `pwd` operation uses e.g. `joe` as a username and then for the TOTP value it uses `otp://joe` as the username, which allows for seamless 2FA login. # DEFAULT SCRIPTS `sphinx-x11(1)` comes with 5 default sphinx-scripts (note on debian and derivates instead of a `.sphinx` extension they have a `sx11-` prefix): - pass.sphinx : gets a password using `sphinx(1)`, types it and submits it. - user-pass.sphinx : gets a password using `sphinx(1)`, types the user, then the password and submits it. - user-pass-otp.sphinx : gets a password, and a TOTP pin code using `sphinx(1)`, first types the username, then the password, then submits the form, and finally enters the TOTP pin and submits that as well. - otp.sphinx : gets a TOTP pin code using `sphinx(1)` and types and submits it. - getacc-user-pass.sphinx: waits for a click on a browser window, from with it gets the target `host` value, then using that uses `sphinx list` to get the users associated with this host, and if one is selected, waits for another click in the user input field of a login form, then gets a password using `sphinx(1)`, types the user, then the password and submits it. Each of these scripts waits for the user to click, then they retrieve the relevant password (and/or TOTP token) before inserting it into the form fields, navigating between them with `tab` and `enter`. You are welcome to contribute adapted sphinx-scripts for websites that have other login semantics. # EXAMPLE As an example the `user-pass-otp.sphinx` script is explained below: ``` #!sphinx-x11 wait-for-click user tab pwd tab enter wait-for-click otp enter ``` The first line specifies `sphinx-x11(1)` as the interpreter. The script itself then waits for the user to click (line 3), then in line 4 inserts the `user` - which is specified as the first parameter to this script. Line 5 injects a `tab` so the next form field is selected. Then pwdsphinx/getpwd is used to get the password for `user` and `host` - the host being the 2nd parameter to this script. `enter` is used to submit this form in line 8. Since this is a new form the script waits (line 9) for the user to click in the field where the TOTP value needs to be inserted. Then in line 10 the TOTP value is queried using pwdsphinx/getpwd, and finally in the last line the TOTP value is submitted by injecting `enter` into the application. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)`, `type-pwd(1)`, `exec-on-click(1)`, `getpwd(1)` pwdsphinx-2.0.0-rc5/man/sphinx.md000066400000000000000000000572371474501166400166600ustar00rootroot00000000000000% sphinx(1) | command-line client for the SPHINX password manager # NAME sphinx - command-line client for the SPHINX password manager # SYNOPSIS `sphinx` init echo "password" | `sphinx` create \ \ [\\\\] [\] [\] [\] echo "password" | `sphinx` get \ \ echo -e "oldpassword\nnewpassword" | `sphinx` change \ \ [\\\\] [\] [\] [\] [ echo "password" | ] `sphinx` commit \ \ [ echo "password" | ] `sphinx` undo \ \ [ echo "password" | ] `sphinx` delete \ \ `sphinx` list \ `sphinx` healthcheck `sphinx` qr [\] [\] In general if any operation requires a master(input) password, it is expected on standard input, and any resulting account (output) password is printed to standard output. In the examples we use `echo` but it is recommended to use `getpwd(1)` or similar tools to query and pass the input password. # DESCRIPTION SPHINX -- password Store that Perfectly Hides from Itself (No Xaggeration) -- is an information-theoretically secure cryptographic password storage protocol with strong security guarantees, as described in the 2015 paper "Device-Enhanced Password Protocols with Optimal Online-Offline Protection" by Jarecki, Krawczyk, Shirvanian, and Saxena (https://ia.cr/2015/1099). `sphinx` is the command-line client for the SPHINX protocol, it provides access to all operations over the life-cycle of a password: init, create, get, change, undo, commit, delete. Additionally it provides also operations that make this more user-friendly: listing of users associated with a host and export of the configuration using a qr code. `sphinx` not only handles passwords, it is also able to handle (T)OTP 2FA and age keys. Additionally - if installed - `sphinx` also provides access to `opaquestore(1)`, a simple tool that allows to store secrets that need encrypted storage (like keys, phrases, or other data). ## INITIALIZING A CLIENT ``` sphinx init ``` This creates a new master key for the client, which is used to address records on the sphinx server and authorize management operations on those records. You **SHOULD** back up and encrypt this master key. If you want to use sphinx on a different device you want to copy this master key also there. For copying this (and other settings) to the android client `androsphinx` we have the `qr` operation, see below. This operation also creates a fixed healthcheck record on the server(s). ## CREATE PASSWORD Creating a new password for a site is easy, pass your "master" password on standard input to the client, and provide parameters like in this example: ``` echo -n 'my input password' | sphinx create username example.com ulsd 0 ' !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' ``` The parameters to the client are - Your input password on standard input. Since the input password is not used to input anything, you can actually use different input passwords for different user/site combinations. (Unlike with traditional password managers which have one master password that encrypts the whole database) - `create` for the operation, then - `username` for the username on - the site `example.com` then - the password constraints, see sections `PASSWORD RULES` and `PREDETERMINED PASSWORDS` for more info If the command runs successfully - the resulting new high-entropy output password according to the given rules is printed to the console. ## GET PASSWORD Getting a password from the sphinx oracle works by running the following command: ``` echo -n 'my master password' | sphinx get username example.com ``` You supply your master password on standard input, provide the `get` operation as the first parameter, your `username` as the 2nd and the `site` as the 3rd parameter. The resulting password is returned on standard output. ## CHANGE PASSWORD You might want to (or are forced to regularly) change your password, this is easy while you can keep your master password unchanged (or you can change it too, if you want). The command is this: ``` echo -en 'my master password\nnew masterpassword' | sphinx change username example.com 'ulsd' 0 ' !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' ``` You supply your current master password on standard input, and separated by a new-line you also provide the new master password. The new master password can be the same as the old, but can also be a new password if you want to change also the master password. You provide the `change` operation as the first parameter to the client, your `username` as the 2nd and the `site` as the 3rd parameter. You also can provide similar password generation rule parameters that were also used to create the original password, in case your account has new password rules and you want/have to accommodate them. For more information see the `PASSWORD RULES` and `PREDETERMINED PASSWORDS` sections below. Your new new password is returned on standard output. __IMPORTANT__ this only creates a new output password, but does not activate it. Running a `get` operation will still respond with the previous password, to activate the new password, you need to run a `commit` operation, see the next section: ## COMMITTING A CHANGED PASSWORD After changing the password, you will still get the old password when running the `get` operation. To switch to use the new password you have to commit the changes with ``` echo -n 'my master password' | sphinx commit username example.com ``` Depending on your `rwd_keys` configuration setting, you might have to provide your input password on standard input to this operation. If all goes well, there is no output expected. If anything goes wrong, there is going to be an error message and a non-zero exit-code. ## UNDOING A PASSWORD COMMIT If you somehow messed up and have to go back to use the old password, you can undo committing your password using: ``` echo -n 'my master password' | sphinx undo username example.com ``` Depending on your `rwd_keys` configuration setting, you might have to provide your master password on standard input to this operation. If all goes well, there is no output expected, otherwise there will be an error message and non-zero exit-code. ## DELETING PASSWORDS In case you want to delete a password, you can do using the following command: ``` echo -n "my master password" | sphinx delete username example.com ``` You provide the `delete` operation as the first parameter to the client, your `username` as the 2nd and the `site` as the 3rd parameter. This command does not provide any output on the console in case everything goes well, otherwise an error message and an non-zero exit code will signal a problem. Depending on your `rwd_keys` configuration setting, you might have to provide your master password on standard input to this operation. ## QR CODE CONFIG In case you want to use phone with the same sphinx server, you need to export your config to the phone via a QR code. ``` sphinx qr ``` Will display a QR code containing only public information - like the server host and port, and whether you use rwd_keys. This is mostly useful if you want to share your setup with a friend or family. If you want to connect your own phone to the setup used with pwdsphinx, you also need to export your client secret in the QR code: ``` sphinx qr key ``` This contains your client secret, and you should keep this QR code confidential. Make sure there is no cameras making copies of this while this QR code is displayed on your screen. If for whatever reason you want to display the QR code as an SVG, just append the `svg` keyword to the end of the `sphinx qr` command. ## HEALTHCHECK If you have run the `sphinx init` command, then this also has created a fixed healthcheck record. You can simply check if your setup is ok, by running a `sphinx healthcheck` operation. You can also try doing the same by running a `get` operation like this: ``` echo -n 'all ok?' | env/bin/sphinx get healthcheck "sphinx servers" ``` It should output "everything works fine". The difference is, that the health check only fetches the ratelimiting challenges from all servers and then aborts. While the get request will affect your ratelimiting difficulty if done to frequently. ## PASSWORD RULES When creating or changing passwords you can specify rules limiting the size and characters allowed in the output password. This is specified as follows: The letters `ulsd` stand in order for the following character classes: - `u` upper-case letters, - `l` lower-case letters, - `s` symbols and - `d` for digits. The `s` is a short-cut to allow all of the symbols, if you are limited by the server which symbols to use, you can specify the allowed symbols explicitly. Currently these are the symbols supported (note the leading space char): ``` !"#$%&'()*+,-./:;<=>?@[\]^_`{|}~ ``` Be careful, if you specify these on the command-line you'll have to escape the quotes you use for enclosing this list and possibly the backslash char that is also part of this list. In the `create username` example above the symbols are correctly escaped, in case you need to copy/paste them. For examples how to use these see the section "CREATE PASSWORD" or "CHANGE PASSWORD". ### DEFAULT RULES If you do not provide password rules, they will be defaulting to 'ulsd' and length as long as possible, which means 77 characters long passwords using all four character classes, providing 507 bits of entropy, way too much. ### RECOMMENDED OUTPUT PASSWORD LENGTH It is recommended to set the output password size to maximum 12 chars in case of `ulsd` classes enabled. If you ever have to type in this output password on a TV remote, or in other stressful situations this will be a big relief. 12 character long passwords with full entropy and consisting of all possible printable ASCII chars are computationally impossible to bruteforce on current password cracking hardware, as they provide almost 80 bits of entropy, and 15 characters almost 99 bits of entropy. ## PREDETERMINED OUTPUT PASSWORDS In case for some reason you cannot use random passwords with your account, or you want to store a "password" that you cannot change, like a PIN code for example, or a passphrase shared with your colleagues, you can specify a maximum 77 character long password, that will be generated by the SPHINX client for you. In that case the command line looks like this (note the same syntax also works for the `change` operation) ``` echo -n 'my master password' | sphinx create username example.com "correct_battery-horse#staple" ``` In this case you cannot specify neither the accepted character classes, nor the size, nor symbols, these will be deducted from the predetermined password itself. ## Backward compatibility with v1 SPHINX servers/records If you still have SPHINX records on the server that were generated using v1, - and you want to use them -, you have to specify this server also in the client section like you had to in v1. If there is no record found with v2 get operations sphinx will attempt a get request for a v1 style record. If a v1 style record is found, a new v2 style record is created automatically, so no need to check for v1 style records in this particular case anymore. Unless you use also other clients that are v1 onl (like androsphinx) v1 records that are upgraded to v2 can be automatically deleted after a succesful upgrade, for this set `delete_upgraded` to true in the `[client]` section of your sphinx configuration. This helps server administrators by keeping their "DB" clean, and having a means to see how many v1 records are still not upgraded. ## OUTPUT PLUGINS (TOTP & AGE) It is possible to "store" TOTP secrets and age secret keys using `sphinx`. To store such a secret and have it automatically handled correctly (e.g. TOTP verification code output instead of the secret) just prefix your username with `otp://` for TOTP support and with `age://` for age key support. The latter, when queried will output a correctly formatted age private key. ## OPAQUE-Store INTEGRATION If you have opaque-store (see https://github.com/stef/opaque-store/) installed and configured (see `opaque-stored.cfg(5)`) correctly you get a number of additional operations, which allow you to store traditionally encrypted blobs of information. The following operations will be available if opaque-store is setup correctly: ```sh echo -n 'password' | sphinx store file-to-store echo -n 'password' | sphinx read echo -n 'password' | sphinx replace [force] file-to-store echo -n 'password' | sphinx edit [force] echo -n 'password' | sphinx changepwd [force] echo -n 'password' | sphinx erase [force] echo -n 'password' | sphinx recovery-tokens echo -n 'password' | sphinx unlock ``` ### How does OPAQUE-Store SPHINX integration work In all OPAQUE-Store operations we first execute a SPHINX get operation, that calculates the password which is used with OPAQUE. This means that the input passwords for OPAQUE will be the strongest possible and essentially un-bruteforcable on their own (without SPHINX). Of course online bruteforce attacks are still possible going through SPHINX. But OPAQUE is able to detect wrong passwords and thus can lock your record after a pre-configured amount of failed attempts. Of course this does not apply to the operator of an OPAQUE server, who can circumvent the locking of records. And thus: ### A WARNING: don't let one entity control enough of your SPHINX and OPAQUE-Store servers As you can see every opaque-store op needs a password on standard input. This password is run through SPHINX, and the output password is used in the OPAQUE protocol as the input password. This also means, that if you use a single server setup for both SPHINX and OPAQUE-Store, the two servers should not be controlled by the same 3rd party entity, otherwise this entity is able to offline-bruteforce your SPHINX master password. If you use either of these services in a threshold setup, and these threshold servers are controlled by different entities, you should be ok, as long as no one controls a threshold number of oracles/servers. ### OPAQUE-Store CLI Parameters #### KeyId Every operation provided by the OPAQUE-Storage (O-S) integration needs a "keyid" parameter, this references your record stored by O-S. Internally the client uses the configuration value `id_salt`, together with the name of the O-S server to hash the keyid parameter into a record id for the O-S Server. This means, that if you lose or change your `id_salt` parameter or the name of the O-S server, all your record ids will be different and inaccessible. So it is a good idea to make a backup of your configuration file containing these. Note this `id_salt` doesn't really have to be secret, although it does provide another layer of security-by-obscurity if you do so. #### Forced operations In the case that you are using a threshold setup, some operations (`replace`, `edit`, `changepwd` and `erase`) require that all servers successfully participate in the operation. This is to avoid, that the records on temporarily unavailable servers remain unchanged and lead later possibly to corruption. If you are sure however that this is ok, you can provide a `force` parameter on the CLI which reduces the number of servers successfully participating to the value of your `threshold` configuration setting. ### Store an encrypted blob ```sh getpwd | sphinx store file-to-store ``` This simply does what it promises, stores the `file-to-store` encrypted on the OPAQUE-Store server, using a password derived from SPHINX. Note that this command outputs also a recovery-token, which you should keep safe in case your record gets locked. ### Retrieving an encrypted opaquestore blob ```sh getpwd | sphinx read ``` Straightforward, no surprise. This gets your previously stored record and displays it on standard output. ### Overwrite an encrypted opaquestore blob ```sh getpwd | sphinx replace [force] file-to-store ``` Whatever has been stored at `keyid` is now overwritten by an encrypted `file-to-store`. This only works, if there is already something stored at `keyid`. All servers must cooperate in this, if one or more are unavailable this will fail, unless `force` is specified and the threshold is matched, in which case the servers unavailable will be corrupted from this point on. ### Edit a opaquestore blob ```sh getpwd | sphinx edit [force] ``` This operation fetches the file stored at `keyid` loads it into your editor (specified by the `EDITOR` environment variable) and stores the changes and saved file back on the same `keyid` overwriting the original. ### Change your password on an opaquestore blob ```sh getpwd | sphinx changepwd [force] ``` This operation does a full change of passwords and keys. Even if you don't change your own password that you provide to getpwd, SPHINX will change it's own key, and thus change the output password which will be used for the password in OPAQUE-store finally resulting in a whole new and fresh encryption key for your file which gets re-encrypted with that. ### Delete a stored opaquestore blob ```sh getpwd | sphinx erase [force] ``` Nothing surprising here, does what it promises, deletes the stored blob referenced by the keyid. ### Get a recovery token ```sh getpwd | sphinx recovery-tokens ``` If your record is not locked, this operation gets you an additional recovery token. ### Unlock a locked opaquestore blob ```sh getpwd | sphinx unlock ``` If for some reason (someone online-bruteforcing your record, or you forgetting your master password) your record becomes locked by the servers, you can unlock it using a recovery token. This will also automatically retrieve the record - unless you supply the wrong password again. # SPHINX CONFIGURATION The client can be configured by any of the following files: - `/etc/sphinx/config` - `~/.sphinxrc` - `~/.config/sphinx/config` - `./sphinx.cfg` Files are parsed in this order, this means global settings can be overridden by per-user and per-directory settings. The client can be configured changing the settings in the `[client]` and the `[servers]` sections of the config file. The `datadir` (default: `~/.sphinx`) variable holds the location for your client parameters. Particularly it contains a masterkey which is used to derive secrets. The master key - if not available - is generated by issuing an `init` command. You **SHOULD** back up and encrypt this master key. `rwd_keys` toggles if the master password is required for authentication of management operations. The oracle is oblivious to this setting, this is purely a client-side toggle, in theory it is possible to have different settings for different "records" on the oracle. `validate_password` Stores a check digit of 5 bits in on the oracle, this helps to notice most typos of the master password, while decreasing security slightly. The `userlist` option (default: True) can disable the usage of userlists. This prohibits the server to correlate all the records that belong to the same sphinx user relating to the same host. The cost of this, is that the user has to remember themselves which usernames they have at which host. Specify `address` and `port` for backward compatibility with an old v1 server. If there is no record found with v2 get operations sphinx will attempt a v1 style get request and see if the record is available from "old times". If a v1 record is found a new v2 style record is created, so no need to send a v1 get request for this particular record anymore. `delete_upgraded` enables automatic deletion of v1 records after automatically upgrading them to v2 records. Unless you use also other clients that are v1 only (like androsphinx) this is the recommended setting, it removes crust and enables server operators to see if their users are finally completely v2, and can disable v1 support. The `threshold` option must specify the number of servers necessary to operate sphinx. If the `[servers]` section contains more than two entries, this value must be greater than 1 and less than the number of servers listed in the `[servers]` section: 1 < threshold < len(servers). The `[servers]' section contains subsections for each server like this: ``` [servers] [servers.zero] host="localhost" port=10000 ltsigkey = "32byteBase64EncodedValue==" ``` The subsections all have the the format [server.`name`]. This `name` can be freely chosen and can be a public value. it is __important__ to never change it, as long as you want to access your passwords on this server. This name value is used together with other values to create unique record IDs. If you change the name the record IDs change, and you will not be able to access your old records. The `host` and `port` should match what you set (or its admin publishes) in the `oracle(1)` server. The `ltsigkey` is the servers long-term signing key for threshold operations this should be a base64 encoded value. Alternatively you can also store the raw binary key in a file, which you then specify using the `ltsigkey_path` value instead. This key only needed for threshold operation, if you use SPHINX in a single-server setting you don't need this. # SECURITY CONSIDERATIONS You **SHOULD** back up and encrypt your master key. Hint you could do this using the `qr key` operation, recording all the other important details as well. Backing up your `webauthn_data_dir` from the `[websphinx]` section is also a good idea, in case you use the webextension and webauthn. The `rwd_keys` configuration setting, if set to False protects against offline master password bruteforce attacks - which is also a security guarantee of the original SPHINX protocol. The drawback is that for known (host,username) pairs the according record can be changed/deleted by an attacker if the clients masterkey is available to them. However neither the master nor the account password can leak this way. This is merely a denial-of-service attack vector. If `rwd_keys` is set to True, then this eliminates the denial-of-service vector, but also negates the offline-bruteforce guarantee of the SPHINX protocol. This setting is really a compromise between availability of account passwords versus the confidentiality of your master password. The `validate_password` configuration setting if enabled, decreases security slightly (by 5 bits). In general it should be safe to enable. The `userlist` configuration setting is by default enabled, and allows a server operator to correlate records that belong to the same SPHINX user on the same online service. If you have multiple accounts on an online service and all of them are handled by the same SPHINX server, the server operator can take note when a userlist record is updated and which SPHINX record belongs to this operation. This leaks some information, that can be used by an adversarial server operator to correlate records. In this man page we are using echo only for demonstration, you should use something like this instead (or even directly `getpwd(1)` from the contrib directory if you are not interested in customizing): ``` echo GETPIN | pinentry | grep '^D' | cut -c3- | sphinx create username example.com ulsd 0 ``` Using pinentry you can go fancy and do double password input, and even have something checking password quality for you, check it out, it's quite versatile. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2024 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO https://www.ctrlc.hu/~stef/blog/posts/sphinx.html https://www.ctrlc.hu/~stef/blog/posts/oprf.html https://github.com/stef/opaque-store/ `oracle(1)`, `getpwd(1)`, `opaquestore(1)` �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/man/type-pwd.md�����������������������������������������������������������������0000664�0000000�0000000�00000002347�14745011664�0017110�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������% type-pwd(1) | tool which wraps sphinx(1) to get and type a password to an X11 application # NAME type-pwd - tool which wraps sphinx(1) to get and type a password to an X11 application # SYNOPSIS ``` type-pwd username hostname ``` # DESCRIPTION This script combines `getpwd(1)`, `exec-on-click(1)` and the `sphinx(1)` client in such a way, that it securely queries for your master password, and then waits until you click somewhere (hopefully into a password entry field) and then sends the password as keystrokes. Using this mechanism you make sure your password is never on your clipboard where malware might steal it. And also it allows you to enter your password on those sites that disable copy/pasting into password fields. When you click make sure you click in the password entry field where you want the password to be entered. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO `sphinx(1)`, `exec-on-click(1)`, `getpwd(1)` �����������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/man/websphinx.md����������������������������������������������������������������0000664�0000000�0000000�00000001650�14745011664�0017342�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������% websphinx(1) | native-messaging backend for SPHINX browser webextensions # NAME websphinx - native-messaging backend for SPHINX browser webextensions # SYNOPSIS `websphinx` is not meant to be run by a user. # DESCRIPTION `websphinx` is a native-messaging backend for webextensions that expose the SPHINX password storage protocol in a browser. When a browser starts and the appropriate extension is installed it starts the native-messaging backend automatically. # REPORTING BUGS https://github.com/stef/pwdsphinx/issues/ # AUTHOR Written by Stefan Marsiske. # COPYRIGHT Copyright © 2023 Stefan Marsiske. License GPLv3+: GNU GPL version 3 or later . This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. # SEE ALSO https://github.com/stef/websphinx-chrom/ https://github.com/stef/websphinx-firefox/ `sphinx(1)` ����������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/����������������������������������������������������������������������0000775�0000000�0000000�00000000000�14745011664�0016260�5����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/__init__.py�����������������������������������������������������������0000664�0000000�0000000�00000000000�14745011664�0020357�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/bin2pass.py�����������������������������������������������������������0000775�0000000�0000000�00000005755�14745011664�0020372�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 # SPDX-FileCopyrightText: 2018, 2021, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later import sys, math, random #from itertools import chain #tuple(bytes([x]) for x in chain(range(32,48),range(58,65),range(91,97),range(123,127))) symbols = ' !"#$%&\'()*+,-./:;<=>?@[\\]^_`{|}~' sets = { # symbols # digits 'd': tuple(bytes([x]) for x in range(48,58)), # upper-case 'u': tuple(bytes([x]) for x in range(65,91)), # lower-case 'l': tuple(bytes([x]) for x in range(97,123))} allchars = ''.join(tuple(c.decode('utf8') for x in (sets[c] for c in ('u','l','d') if c in 'uld') for c in x) + tuple(symbols)) def bin2pass(raw, chars, size): v = int.from_bytes(raw, 'big') result = '' while (size > 0 and len(result) < size) or (size == 0 and v > 0): idx = v % len(chars) v //= len(chars) result = chars[idx] + result return result def pass2bin(string, chars = allchars): classes = {'u','l','d'} sym = symbols # reduce char classes to necessary minimum to # accomodate longer passwords if chars == None: chars = [] for c in ('u','l','d'): s = set(x.decode('utf8') for x in sets[c]) if s & set(string): chars.append(''.join(sorted(s))) else: classes.remove(c) if set(string) & set(symbols): chars+=symbols else: sym = '' chars=''.join(chars) le_str = string[::-1] logbase = int(math.log(1<<512, len(chars))) r = sum(chars.find(le_str[i]) * len(chars)**i for i in range(len(le_str))) # add padding r += sum(chars.find(random.choice(chars)) * len(chars)**i for i in range(len(le_str), logbase)) return int.to_bytes(r, 64, 'big'), ''.join(classes), sym def derive(rwd, rule, size, syms=symbols): chars = tuple(c.decode('utf8') for x in (sets[c] for c in ('u','l','d') if c in rule) for c in x) + tuple(x for x in symbols if x in set(syms)) password = bin2pass(rwd,chars, size) if size>0: password=password[:size] return password def usage(): print("usage: %s [d|u|l] [] \" !\"#$%%&'()*+,-./:;<=>?@[\\]^_`{|}~\" {default: uld}" % sys.argv[0]) sys.exit(0) def main(): if len(sys.argv)>4 or 'h' in sys.argv or '--help' in sys.argv: usage() if len(sys.argv)==2: if sys.argv[1]=='s': print("all symbols:", symbols) return size = 0 raw = sys.stdin.buffer.read(64) syms = symbols rule = '' for arg in sys.argv[1:]: try: size = int(arg) continue except ValueError: pass # a symbol set specification? if set(arg) - set(symbols) == set(): syms = set(arg) elif set(arg) - set("uld") == set(): rule = arg elif len(arg) == 0: syms = '' else: usage() if size<0: print("error size must be < 0") usage() print(derive(raw,rule,size,syms)) if __name__ == '__main__': main() �������������������pwdsphinx-2.0.0-rc5/pwdsphinx/config.py�������������������������������������������������������������0000775�0000000�0000000�00000001541�14745011664�0020103�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 # SPDX-FileCopyrightText: 2023, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later import os, tomllib from pwdsphinx.utils import split_by_n def getcfg(name): paths=[ # read global cfg f'/etc/{name}/config', # update with per-user configs os.path.expanduser(f"~/.{name}rc"), # over-ride with local directory config os.path.expanduser(f"~/.config/{name}/config"), os.path.expanduser(f"{name}.cfg") ] config = dict() for path in paths: try: with open(path, "rb") as f: data = tomllib.load(f) except FileNotFoundError: continue except tomllib.TOMLDecodeError as ex: print(f"error in {path} at {ex}") continue config.update(data) return config if __name__ == '__main__': import sys getcfg('sphinx').write(sys.stdout) ���������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/consts.py�������������������������������������������������������������0000775�0000000�0000000�00000000777�14745011664�0020161�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 CREATE =b'\x00' # sphinx READ =b'\x33' # blob UNDO =b'\x55' # change sphinx GET =b'\x66' # sphinx V1GET =b'\x69' # v1 sphinx COMMIT =b'\x99' # change sphinx CHANGE_DKG =b'\xa0' # sphinx/dkg CHANGE =b'\xaa' # sphinx CREATE_DKG =b'\xf0' # sphinx/dkg V1DELETE =b'\xf9' # v1 sphinx+blobs DELETE =b'\xff' # sphinx+blobs CHALLENGE_CREATE = b'\x5a' CHALLENGE_VERIFY = b'\xa5' VERSION = b'\x01' V1RULE_SIZE = 79 RULE_SIZE = V1RULE_SIZE+32 �pwdsphinx-2.0.0-rc5/pwdsphinx/converter.py����������������������������������������������������������0000775�0000000�0000000�00000002743�14745011664�0020652�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python from pwdsphinx import bin2pass import traceback, os, sys from importlib.machinery import SourceFileLoader from pathlib import Path converters = {} def load_converters(): global converters p = Path(__file__).parent.absolute() for converter_fname in os.listdir(f'{p}/converters/'): if converter_fname.startswith('_') or not converter_fname.endswith('.py'): continue try: name = converter_fname[:-3] import_path = 'converters.'+name if import_path in sys.modules: del sys.modules[import_path] s = SourceFileLoader(import_path, f'{p}/converters/' + converter_fname).load_module() except: print("failed to load converter", converter_fname) traceback.print_exc() continue for schema, converter in s.schema.items(): if schema in converters: raise ValueError(f"{schema} is a already in loaded converters") converters[schema]=converter load_converters() def convert(rwd, user, *opts): if '://' not in user: return bin2pass.derive(rwd, *opts) elif user.startswith('otp://'): # need to recover the predefined base32 otp key rwd = bin2pass.derive(rwd, *opts) schema, _ = user.split("://",1) return converters[schema](rwd, *opts) if __name__ == "__main__": convert(b'\xaa' * 32, 'asdf', 'uld', 0, '') import sys args = [int(x) if x.isdigit() else x for x in sys.argv[1:]] rwd = sys.stdin.buffer.read(32) print(convert(rwd, *args)) �����������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/converters/�����������������������������������������������������������0000775�0000000�0000000�00000000000�14745011664�0020452�5����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/converters/__init__.py������������������������������������������������0000664�0000000�0000000�00000000001�14745011664�0022552�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������ �������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/converters/raw.py�����������������������������������������������������0000775�0000000�0000000�00000000560�14745011664�0021621�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 def convert(rwd, *opts): size = opts[1] # rwd[:] does not copy the underlying data, and thus # a clearmem() not only wipes the original, but also the copy... return rwd[:1] + rwd[1:size] schema = {"raw": convert} def main(): for rwd in sys.stdin: print(convert(rwd.strip())) if __name__ == '__main__': main() ������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/converters/sphage.py��������������������������������������������������0000775�0000000�0000000�00000012654�14745011664�0022306�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 # SPDX-FileCopyrightText: 2018-2021, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later # This file contains a copy of the reference implementation for # Bech32/Bech32m, which has this (c) notice: # # Copyright (c) 2017, 2020 Pieter Wuille # # Permission is hereby granted, free of charge, to any person obtaining a copy # of this software and associated documentation files (the "Software"), to deal # in the Software without restriction, including without limitation the rights # to use, copy, modify, merge, publish, distribute, sublicense, and/or sell # copies of the Software, and to permit persons to whom the Software is # furnished to do so, subject to the following conditions: # # The above copyright notice and this permission notice shall be included in # all copies or substantial portions of the Software. # # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR # IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, # FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE # AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER # LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, # OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN # THE SOFTWARE. import sys, base64, pysodium from enum import Enum class Encoding(Enum): """Enumeration type to list the various supported encodings.""" BECH32 = 1 BECH32M = 2 CHARSET = "qpzry9x8gf2tvdw0s3jn54khce6mua7l" BECH32M_CONST = 0x2bc830a3 def bech32_polymod(values): """Internal function that computes the Bech32 checksum.""" generator = [0x3b6a57b2, 0x26508e6d, 0x1ea119fa, 0x3d4233dd, 0x2a1462b3] chk = 1 for value in values: top = chk >> 25 chk = (chk & 0x1ffffff) << 5 ^ value for i in range(5): chk ^= generator[i] if ((top >> i) & 1) else 0 return chk def bech32_hrp_expand(hrp): """Expand the HRP into values for checksum computation.""" return [ord(x) >> 5 for x in hrp] + [0] + [ord(x) & 31 for x in hrp] def bech32_verify_checksum(hrp, data): """Verify a checksum given HRP and converted data characters.""" const = bech32_polymod(bech32_hrp_expand(hrp) + data) if const == 1: return Encoding.BECH32 if const == BECH32M_CONST: return Encoding.BECH32M return None def bech32_create_checksum(hrp, data, spec): """Compute the checksum values given HRP and data.""" values = bech32_hrp_expand(hrp) + data const = BECH32M_CONST if spec == Encoding.BECH32M else 1 polymod = bech32_polymod(values + [0, 0, 0, 0, 0, 0]) ^ const return [(polymod >> 5 * (5 - i)) & 31 for i in range(6)] def bech32_encode(hrp, data, spec=2): """Compute a Bech32 string given HRP and data values.""" combined = data + bech32_create_checksum(hrp, data, spec) return hrp + '1' + ''.join([CHARSET[d] for d in combined]) def bech32_decode(bech): """Validate a Bech32/Bech32m string, and determine HRP and data.""" if ((any(ord(x) < 33 or ord(x) > 126 for x in bech)) or (bech.lower() != bech and bech.upper() != bech)): return (None, None, None) bech = bech.lower() pos = bech.rfind('1') if pos < 1 or pos + 7 > len(bech) or len(bech) > 90: return (None, None, None) if not all(x in CHARSET for x in bech[pos+1:]): return (None, None, None) hrp = bech[:pos] data = [CHARSET.find(x) for x in bech[pos+1:]] spec = bech32_verify_checksum(hrp, data) if spec is None: return (None, None, None) return (hrp, data[:-6], spec) def convertbits(data, frombits, tobits, pad=True): """General power-of-2 base conversion.""" acc = 0 bits = 0 ret = [] maxv = (1 << tobits) - 1 max_acc = (1 << (frombits + tobits - 1)) - 1 for value in data: if value < 0 or (value >> frombits): return None acc = ((acc << frombits) | value) & max_acc bits += frombits while bits >= tobits: bits -= tobits ret.append((acc >> bits) & maxv) if pad: if bits: ret.append((acc << (tobits - bits)) & maxv) elif bits >= frombits or ((acc << (tobits - bits)) & maxv): return None return ret def decode(hrp, addr): hrpgot, data, spec = bech32_decode(addr) if hrpgot != hrp: return None decoded = convertbits(data, 5, 8, False) if decoded is None or len(decoded) < 2 or len(decoded) > 40: return None return bytes(decoded) def encode(hrp, data): ret = bech32_encode(hrp, convertbits(data, 8, 5)) if decode(hrp, ret) == None: return None return ret def convert(rwd, *opts): return encode('age-secret-key-', rwd[:32]).upper() schema = {'age': convert} def usage(help=False): print("usage: sphage.py [] <[32 bytes of cryptographic entropy] >key") if help: sys.exit(0) sys.exit(1) if __name__ == '__main__': rwd = sys.stdin.buffer.readline().rstrip(b'\n') if len(sys.argv)!=2: usage() op = sys.argv[1] if op in ('help', '-h', '--help'): usage(True) elif op == "pubkey": if rwd.startswith(b'AGE-SECRET-KEY-'): rwd = decode('age-secret-key-', rwd.decode('utf8')) pk = pysodium.crypto_scalarmult_base(rwd) ret = encode("age", pk) elif op == "privkey": ret = encode('age-secret-key-', rwd).upper() else: usage() print(ret) ������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/converters/totp.py����������������������������������������������������0000775�0000000�0000000�00000001352�14745011664�0022016�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python from base64 import b32decode import hmac from struct import pack, unpack import sys from time import time def totp(key, *opts, time_step=30, digits=6, digest='sha1'): if isinstance(key, bytes): key=key.decode('utf8') key = b32decode(key.upper() + '=' * ((8 - len(key)) % 8)) ts = pack('>Q', int(time() / time_step)) mac = hmac.new(key, ts, digest).digest() offset = mac[-1] & 0x0f binary = unpack('>L', mac[offset:offset+4])[0] & 0x7fffffff return str(binary)[-digits:].zfill(digits) schema = {"otp": totp} def main(): args = [int(x) if x.isdigit() else x for x in sys.argv[1:]] for key in sys.stdin: print(totp(key.strip(), [], *args)) if __name__ == '__main__': main() ��������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/ext.py����������������������������������������������������������������0000664�0000000�0000000�00000002556�14745011664�0017442�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������from os import mkdir, getenv from os.path import exists, split from pathlib import Path from sys import executable EXT_NM_TPL = '''{{ "name": "websphinx", "description": "Host for communicating with PITCHFORKed Sphinx", "path": "{cmd}", "type": "stdio", ''' CHR_NM_TPL = EXT_NM_TPL + ''' "allowed_origins": [ "chrome-extension://ojbhlhidchjkmjmpeonendekpoacahni/" ] }} ''' FF_NM_TPL = EXT_NM_TPL + ''' "allowed_extensions": [ "sphinx@ctrlc.hu" ] }} ''' def get_executable(): venv = getenv('VIRTUAL_ENV') if venv: return f'{venv}/bin/websphinx' d = split(Path(__file__).absolute())[0] return d + '/websphinx.py' def init_browser_ext(): cmd = get_executable() print(cmd) # init ff if exists(f'{Path.home()}/.mozilla/'): nm_dir = f'{Path.home()}/.mozilla/native-messaging-hosts/' if not exists(nm_dir): mkdir(nm_dir) with open(nm_dir+'websphinx.json', 'w') as outfile: ff_nm = FF_NM_TPL.format(cmd=cmd) outfile.write(ff_nm) # init chrome if exists(f'{Path.home()}/.config/chromium'): nm_dir = f'{Path.home()}/.config/chromium/NativeMessagingHosts/' if not exists(nm_dir): mkdir(nm_dir) with open(nm_dir+'websphinx.json', 'w') as outfile: chr_nm = CHR_NM_TPL.format(cmd=cmd) outfile.write(chr_nm) ��������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/oracle.py�������������������������������������������������������������0000775�0000000�0000000�00000056137�14745011664�0020116�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 # SPDX-FileCopyrightText: 2018-2024, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later import socket, sys, ssl, os, datetime, binascii, shutil, os.path, traceback, struct, select from os import access, R_OK from os.path import isfile, getsize import pysodium import equihash import pyoprf from pwdsphinx.config import getcfg from pwdsphinx.consts import * cfg = getcfg('sphinx') # todo genkey ltsig integrate into oracle verbose = cfg['server'].get('verbose', False) address = cfg['server'].get('address', '127.0.0.1') port = int(cfg['server'].get('port',2355)) timeout = int(cfg['server'].get('timeout',"3")) max_kids = int(cfg['server'].get('max_kids',5)) datadir = os.path.expanduser(cfg['server'].get('datadir',"/var/lib/sphinx")) ts_epsilon = 1200 # todo make configurable try: ssl_key = os.path.expanduser(cfg['server']['ssl_key']) except KeyError: print("Error: ssl_key missing! must specify it in the config file") try: ssl_cert = os.path.expanduser(cfg['server']['ssl_cert']) except KeyError: print("Error: ssl_cert missing! must specify it in the config file") try: ltsigkey_path = os.path.expanduser(cfg['server']['ltsigkey']) except KeyError: print("Error: ltsigkey missing! must specify it in the config file") rl_decay = int(cfg['server'].get('rl_decay',1800)) rl_threshold = int(cfg['server'].get('rl_threshold',1)) rl_gracetime = int(cfg['server'].get('rl_gracetime',10)) if(verbose): print(f"pid: {os.getpid()}") print(f"address: {address}:{port}") print(f"timeout: {timeout}s") print(f"max kids: {max_kids}") print(f"datadir: {datadir}") print(f"ssl_key: {ssl_key}") if 'ssl_cert' in globals(): print(f"ssl_cert: {ssl_cert}") print(f"rl decay: {rl_decay}s") print(f"rl threshold: {rl_threshold}") print(f"rl gracetime: {rl_gracetime}s") Difficulties = [ # timeouts are based on benchmarking a raspberry pi 1b { 'n': 60, 'k': 4, 'timeout': 1 }, # 320KiB, ~0.02 { 'n': 65, 'k': 4, 'timeout': 2 }, # 640KiB, ~0.04 { 'n': 70, 'k': 4, 'timeout': 4 }, # 1MiB, ~0.08 { 'n': 75, 'k': 4, 'timeout': 9 }, # 2MiB, ~0.2 { 'n': 80, 'k': 4, 'timeout': 16 }, # 5MiB, ~0.5 { 'n': 85, 'k': 4, 'timeout': 32 }, # 10MiB, ~0.9 { 'n': 90, 'k': 4, 'timeout': 80 }, # 20MiB, ~2.4 { 'n': 95, 'k': 4, 'timeout': 160 }, # 40MiB, ~4.6 # timeouts below are interpolated from above { 'n': 100, 'k': 4, 'timeout': 320 }, # 80MiB, ~7.8 { 'n': 105, 'k': 4, 'timeout': 640 }, # 160MiB, ~25 { 'n': 110, 'k': 4, 'timeout': 1280 }, # 320MiB, ~57 { 'n': 115, 'k': 4, 'timeout': 2560 }, # 640MiB, ~70 { 'n': 120, 'k': 4, 'timeout': 5120 }, # 1GiB, ~109 ] RL_Timeouts = {(e['n'],e['k']): e['timeout'] for e in Difficulties} normal = "\033[38;5;%sm" reset = "\033[0m" def fail(s): if verbose: traceback.print_stack() print('fail') s.send(b'\x00\x04fail') # plaintext :/ todo use ltsigkey? s.shutdown(socket.SHUT_RDWR) s.close() os._exit(0) def pop(obj, cnt, astype=None): if astype is not None: return astype(obj[:cnt]), obj[cnt:] return obj[:cnt], obj[cnt:] def verify_blob(msg, pk): sig = msg[-64:] msg = msg[:-64] pysodium.crypto_sign_verify_detached(sig, msg, pk) return msg def save_blob(path,fname,blob): path = os.path.join(datadir, path, fname) with open(path,'wb') as fd: os.fchmod(fd.fileno(),0o600) fd.write(blob) def read_pkt(s,size): res = [] read = 0 while read 0: msg = read_pkt(s, in_size) else: msg = b'' cur_step = pyoprf.tpdkg_peerstate_step(peer) try: out = pyoprf.tpdkg_peer_next(peer, msg) except Exception as e: print(f"{e} | peer step {cur_step}") fail(s) if(len(out)>0): s.send(out) share = pyoprf.tpdkg_peerstate_share(peer) return share # msg format: 0xf0|msg0[pyoprf.tpdkg_msg0_SIZE]|id[32]|alpha[32]] def create_dkg(s, msg): if len(msg)!=65+pyoprf.tpdkg_msg0_SIZE: print(f"{len(msg)} != {pyoprf.tpdkg_msg0_SIZE}",file=sys.stderr) fail(s) if verbose: print('Data received:',msg.hex()) op, msg = pop(msg,1) id, msg = pop(msg,32) alpha, msg0 = pop(msg,32) if len(msg0) != pyoprf.tpdkg_msg0_SIZE: print(f"msg0 is invalid size {len(msg0)}") fail(s) aux = b'%s%s' % (op, alpha) # for the transcript # check if id is unique id = binascii.hexlify(id).decode() tdir = os.path.join(datadir,id) if(os.path.exists(tdir)): fail(s) xi = dkg(s, msg0, aux) #k=pysodium.randombytes(32) try: beta = pyoprf.evaluate(xi[1:], alpha) except: fail(s) msg = bytes([xi[0]])+beta s.send(msg) # wait for auth signing pubkey and rules msg = s.recv(32+RULE_SIZE+64) # pubkey, rule, signature if len(msg)!=32+RULE_SIZE+64: fail(s) # verify auth sig on packet pk = msg[:32] try: msg = verify_blob(msg,pk) except ValueError: fail(s) rules = msg[32:] # 3rd phase update_blob(s) # add user to host record if not os.path.exists(datadir): os.mkdir(datadir,0o700) os.mkdir(tdir,0o700) save_blob(id,'key',xi) save_blob(id,'pub',pk) save_blob(id,'rules',rules) s.send(b'ok') def load_blob(path,fname,size=None): f = os.path.join(datadir,path,fname) if not os.path.exists(f): if verbose: print('%s does not exist' % f) return with open(f,'rb') as fd: v = fd.read() if size and len(v) != size: if verbose: print("wrong size for %s" % f) raise ValueError('corrupted blob: %s is not %s bytes' % (f, size)) return v # msg format: 0x66|id[32]|alpha[32] def get(conn, msg): _, msg = pop(msg,1) id, msg = pop(msg,32) alpha, msg = pop(msg,32) if msg!=b'': if verbose: print('invalid get msg, trailing content %r' % msg) fail(conn) id = binascii.hexlify(id).decode() k = load_blob(id,'key',33) if k is None: # maybe execute protocol with static but random value to not leak which host ids exist? fail(conn) rules = load_blob(id,'rules', RULE_SIZE) if rules is None: fail(conn) try: beta = pyoprf.evaluate(k[1:], alpha) except: fail(conn) conn.send(k[:1]+beta+rules) # msg format: 0x69|id[32]|alpha[32] def v1get(conn, msg): _, msg = pop(msg,1) id, msg = pop(msg,32) alpha, msg = pop(msg,32) if msg!=b'': if verbose: print('invalid get msg, trailing content %r' % msg) fail(conn) id = binascii.hexlify(id).decode() k = load_blob(id,'key',32) if k is None: # maybe execute protocol with static but random value to not leak which host ids exist? fail(conn) rules = load_blob(id,'rules', V1RULE_SIZE) if rules is None: fail(conn) try: if not pysodium.crypto_core_ristretto255_is_valid_point(alpha): raise ValueError("invalid alpha") beta = pysodium.crypto_scalarmult_ristretto255(k, alpha) except: fail(conn) conn.send(beta+rules) def auth(s,op,id,alpha, isv1=False): pk = load_blob(id,'pub',32) if pk is None: print('no pubkey found in %s' % id) fail(s) nonce=pysodium.randombytes(32) k = load_blob(id,'key',33 if not isv1 else 32) if k is not None: try: if not isv1: beta = bytes([k[0]])+pyoprf.evaluate(k[1:], alpha) else: if not pysodium.crypto_core_ristretto255_is_valid_point(alpha): raise ValueError("invalid alpha") beta = pysodium.crypto_scalarmult_ristretto255(k, alpha) except: fail(s) else: beta = b'' s.send(b''.join([beta,nonce])) sig = s.recv(64) try: pysodium.crypto_sign_verify_detached(sig, op+nonce, pk) except: print('bad sig') fail(s) else: s.send(b'\x00\x04auth') # plaintext :/ todo use ltsigkey? def change(conn, msg): op, tmp = pop(msg,1) id, tmp = pop(tmp,32) alpha,tmp = pop(tmp,32) if tmp!=b'': if verbose: print('invalid get msg, trailing content %r' % tmp) fail(conn) id = binascii.hexlify(id).decode() auth(conn, msg, id, alpha) tdir = os.path.join(datadir,id) if not os.path.exists(tdir): if verbose: print("%s doesn't exist" % tdir) fail(conn) alpha = conn.recv(32) if(len(alpha)!=32): fail(conn) k=b'\x01'+pysodium.randombytes(32) try: beta = k[:1]+pyoprf.evaluate(k[1:], alpha) except: fail(conn) conn.send(beta) blob = conn.recv(32+RULE_SIZE+64) if len(blob)!=32+RULE_SIZE+64: fail(conn) pk = blob[:32] try: rules = verify_blob(blob,pk)[32:] except ValueError: fail(conn) save_blob(id,'new',k) save_blob(id,"rules.new", rules) save_blob(id,"pub.new", pk) conn.send(b'ok') def change_dkg(s, msg): op, tmp = pop(msg,1) id, tmp = pop(tmp,32) alpha,tmp = pop(tmp,32) if tmp!=b'': if verbose: print('invalid get msg, trailing content %r' % tmp) fail(s) id = binascii.hexlify(id).decode() auth(s, msg, id, alpha) aux = b'%s%s' % (op, alpha) tdir = os.path.join(datadir,id) if not os.path.exists(tdir): if verbose: print("%s doesn't exist" % tdir) fail(s) msg = s.recv(pyoprf.tpdkg_msg0_SIZE+32) alpha,msg0 = pop(msg,32) if len(msg0) != pyoprf.tpdkg_msg0_SIZE: print(f"msg0 is invalid size {len(msg0)}") fail(s) xi = dkg(s, msg0, aux) try: beta = pyoprf.evaluate(xi[1:], alpha) except: fail(s) s.send(bytes([xi[0]])+beta) blob = s.recv(32+RULE_SIZE+64) if len(blob)!=32+RULE_SIZE+64: fail(s) pk = blob[:32] try: rules = verify_blob(blob,pk)[32:] except ValueError: fail(s) save_blob(id,'new',xi) save_blob(id,"rules.new", rules) save_blob(id,"pub.new", pk) s.send(b'ok') def delete(conn, msg, isv1=False): op, tmp = pop(msg,1) id, tmp = pop(tmp,32) alpha,tmp = pop(tmp,32) if tmp!=b'': if verbose: print('invalid get msg, trailing content %r' % tmp) fail(conn) id = binascii.hexlify(id).decode() auth(conn, msg, id, alpha, isv1) tdir = os.path.join(datadir,id) if not os.path.exists(tdir): if verbose: print("%s doesn't exist" % tdir) fail(conn) update_blob(conn) shutil.rmtree(tdir) conn.send(b'ok') def commit_undo(conn, msg, new, old): op, tmp = pop(msg,1) id, tmp = pop(tmp,32) alpha,tmp = pop(tmp,32) if tmp!=b'': if verbose: print('invalid get msg, trailing content %r' % tmp) fail(conn) id = binascii.hexlify(id).decode() auth(conn, msg, id, alpha) tdir = os.path.join(datadir,id) if not os.path.exists(tdir): if verbose: print("%s doesn't exist" % tdir) fail(conn) if (new_rules:=load_blob(id,'rules.%s' % new, RULE_SIZE)) is None: fail(conn) if (cur_rules:=load_blob(id,'rules', RULE_SIZE)) is None: fail(conn) if (new_pub:=load_blob(id,'pub.%s' % new, 32)) is None: fail(conn) if (cur_pub:=load_blob(id,'pub', 32) )is None: fail(conn) if (new_key:= load_blob(id, new, 33)) is None: fail(conn) if (cur_key:= load_blob(id, 'key', 33)) is None: fail(conn) save_blob(id,old,cur_key) #clearmem(cur_key) save_blob(id,"rules.%s" % old, cur_rules) save_blob(id,"pub.%s" % old, cur_pub) save_blob(id,"key",new_key) #clearmem(new_key) save_blob(id,"rules", new_rules) save_blob(id,"pub", new_pub) os.unlink(os.path.join(tdir,new)) os.unlink(os.path.join(tdir,"pub.%s" % new)) os.unlink(os.path.join(tdir,"rules.%s" % new)) conn.send(b'ok') def read(conn, msg): op, tmp = pop(msg,1) id, tmp = pop(tmp,32) alpha,tmp = pop(tmp,32) id = binascii.hexlify(id).decode() auth(conn, msg, id, alpha) blob = load_blob(id,'blob') if blob is None: blob = b'' conn.send(blob) def handler(conn, data): if verbose: print('Data received:',data.hex()) if data[0:1] == GET: get(conn, data) elif data[0:1] == V1GET: v1get(conn, data) elif data[0:1] == CHANGE: change(conn, data) elif data[0:1] == CHANGE_DKG: change_dkg(conn, data) elif data[0:1] == DELETE: delete(conn, data) elif data[0:1] == V1DELETE: delete(conn, data, True) elif data[0:1] == COMMIT: commit_undo(conn, data, 'new', 'old') elif data[0:1] == UNDO: commit_undo(conn, data, 'old', 'new') elif data[0:1] == READ: read(conn, data) elif verbose: print("unknown op: 0x%02x" % data[0]) conn.close() os._exit(0) def create_challenge(conn): req = conn.read(65) if req[0:1] == READ: if len(req)!=33: fail(conn) elif len(req)!=65: fail(conn) now = datetime.datetime.now().timestamp() id = binascii.hexlify(req[1:33]).decode() diff = load_blob(id,'difficulty',9) # ts: u32, level: u8, count:u32 if not diff: # no diff yet, use easiest hardness n = Difficulties[0]['n'] k = Difficulties[0]['k'] level = 0 count = 0 else: level = struct.unpack("B", diff[0:1])[0] count = struct.unpack("I", diff[1:5])[0] ts = struct.unpack("I", diff[5:])[0] if level >= len(Difficulties): print("invalid level in rl_ctx:", level) level = len(Difficulties) - 1 count = 0 elif ((now - rl_decay) > ts and level > 0): # cooldown, decay difficulty periods = int((now - ts) // rl_decay) if level >= periods: level -= periods else: level = 0 count = 0 else: # increase hardness if count >= rl_threshold and (level < len(Difficulties) - 1): count = 0 level+=1 else: count+=1 n = Difficulties[level]['n'] k = Difficulties[level]['k'] if (level == len(Difficulties) - 1) and count>rl_threshold*2: print(f"{normal}alert{normal}: someones trying (%d) really hard at: %s" % (196, 253, count, id)) rl_ctx = b''.join([ struct.pack("B", level), # level struct.pack("I", count), # count struct.pack('I', int(now)) # ts ]) if(verbose): print("rl difficulty", {"level": level, "count": count, "ts": int(now)}) try: save_blob(id, 'difficulty', rl_ctx) except FileNotFoundError: if diff: raise challenge = b''.join([bytes([n, k]), struct.pack('Q', int(now))]) key = load_blob('', "key", 32) if not key: key=pysodium.randombytes(32) save_blob('','key',key) state = pysodium.crypto_generichash_init(32, key) pysodium.crypto_generichash_update(state,req) pysodium.crypto_generichash_update(state,challenge) sig = pysodium.crypto_generichash_final(state,32) resp = b''.join([challenge, sig]) conn.send(resp) def verify_challenge(conn): # read challenge challenge = conn.read(1+1+8+32) # n,k,ts,sig if(len(challenge)!=42): fail(conn) n, tmp = pop(challenge,1) n = n[0] k, tmp = pop(tmp,1) k = k[0] ts, tmp = pop(tmp,8) ts = struct.unpack("Q", ts)[0] sig, tmp = pop(tmp,32) # read request req_type = conn.read(1) if req_type[0:1] == READ: payload = conn.read(32) if len(payload)!=32: fail(conn) else: payload = conn.read(64) if len(payload)!=64: fail(conn) req = req_type + payload # read mac key key = load_blob('', "key", 32) if not key: fail(conn) tosign = challenge[:10] state = pysodium.crypto_generichash_init(32, key) pysodium.crypto_generichash_update(state,req) pysodium.crypto_generichash_update(state,tosign) mac = pysodium.crypto_generichash_final(state,32) # poor mans const time comparison if(sum(m^i for (m, i) in zip(mac,sig))): fail(conn) now = datetime.datetime.now().timestamp() if now - (RL_Timeouts[(n,k)]+rl_gracetime) > ts: # solution is too old fail(conn) solsize = equihash.solsize(n,k) solution = conn.read(solsize) if len(solution)!= solsize: fail(conn) seed = b''.join([challenge,req]) if not equihash.verify(n,k, seed, solution): fail(conn) handler(conn, req) def ratelimit(conn): op = conn.recv(1) if op == CREATE: data = CREATE+conn.recv(64) create(conn, data) elif op == CREATE_DKG: data = CREATE_DKG+conn.recv(65+pyoprf.tpdkg_msg0_SIZE) create_dkg(conn, data) elif op == CHALLENGE_CREATE: create_challenge(conn) elif op == CHALLENGE_VERIFY: verify_challenge(conn) def main(debug=False): if debug == True: import ctypes libc = ctypes.cdll.LoadLibrary('libc.so.6') fdopen = libc.fdopen log_file = ctypes.c_void_p.in_dll(pyoprf.liboprf,'log_file') fdopen.restype = ctypes.c_void_p log_file.value = fdopen(2, 'w') ctx = ssl.create_default_context(ssl.Purpose.CLIENT_AUTH) ctx.load_cert_chain(certfile=ssl_cert, keyfile=ssl_key) socket.setdefaulttimeout(timeout) s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1) try: s.bind((address, port)) except socket.error as msg: print(f'Bind to {address}:{port} failed. Error {msg}') sys.exit() #Start listening on socket s.listen() kids = [] try: # main loop while 1: #wait to accept a connection - blocking call r,w,x = select.select([s], [], [], 0.5) if len(r) == 1: conn, addr = s.accept() else: try: pid, status = os.waitpid(-1, os.WNOHANG) if pid != 0: print("remove pid", pid) kids.remove(pid) continue except ChildProcessError: continue if verbose: print('{} Connection from {}:{}'.format(datetime.datetime.now(), addr[0], addr[1])) conn = ctx.wrap_socket(conn, server_side=True) while(len(kids)>max_kids): pid, status = os.waitpid(0,0) kids.remove(pid) pid=os.fork() if pid==0: ssl.RAND_add(os.urandom(16),0.0) try: ratelimit(conn) except: print("fail") raise finally: try: conn.shutdown(socket.SHUT_RDWR) except OSError: pass conn.close() sys.exit(0) else: kids.append(pid) try: pid, status = os.waitpid(-1,os.WNOHANG) if pid!=0: kids.remove(pid) except ChildProcessError: pass except KeyboardInterrupt: pass s.close() def is_readable(path): return isfile(path) and access(path, R_OK) def missing_file(path): print(f"The SSL key at {path} is not a readable file. Make sure this is a proper ssl key.") print(f"Our GettingStarted document gives simple example of how to do so.") print(f"Check out https://sphinx.pm/server_install.html .") print(f"Aborting.") exit(1) def parse_params(): if not is_readable(ssl_key): missing_file(ssl_key) if not is_readable(ssl_cert): missing_file(ssl_cert) if not is_readable(ltsigkey_path) and 'init' not in sys.argv: print(f"Long-term signing key at {ltsigkey_path} is not readable.") print(f"You can generate one by running: {sys.argv[0]} init") if not getsize != pysodium.crypto_sign_SECRETKEYBYTES: print(f"The long-term signing key of the oracle has an invalid size, maybe it's corrupt?") print("abort.") exit(1) debug=False if 'debug' in sys.argv: debug = True if not 'init' in sys.argv: main(debug) else: # init pk, sk = pysodium.crypto_sign_keypair() with open(ltsigkey_path, 'xb') as fd: fd.write(sk) with open(f"{ltsigkey_path}.pub", 'xb') as fd: fd.write(pk) print(f"successfully created long-term signature key pair at:") print(f"{ltsigkey_path}") print(f"and the public key - which you should make available to all clients -, is at:") print(f"{ltsigkey_path}.pub") print(f"The following is the base64 encoded public key that you can also share:") print(f"{binascii.b2a_base64(pk).strip().decode('utf8')}") if __name__ == '__main__': parse_params() ���������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/ostore.py�������������������������������������������������������������0000775�0000000�0000000�00000010711�14745011664�0020150�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python import os, subprocess from tempfile import mkstemp try: from opaquestore import client available = True except: client = None available = False if available: client.config = client.processcfg(client.getcfg('opaque-store')) def usage(params): print("\nOPAQUE Store style blobs") print(" echo -n 'password' | %s store file-to-store" % params[0]) print(" echo -n 'password' | %s read " % params[0]) print(" echo -n 'password' | %s replace [force] file-to-store" % params[0]) print(" echo -n 'password' | %s edit [force] " % params[0]) print(" echo -n 'password' | %s changepwd [force] " % params[0]) print(" echo -n 'password' | %s erase [force] " % params[0]) print(" echo -n 'password' | %s recovery-tokens " % params[0]) print(" echo -n 'password' | %s unlock " % params[0]) def is_cmd(params): if params[1] not in cmds: return False return True def connect(): s = client.Multiplexer(client.config['servers']) s.connect() return s def store(pwd, keyid, path): # create & recovery-tokens with open(path,'r') as fd: data = fd.read() s = connect() client.create(s, pwd, keyid.encode('utf8'), data.encode('utf8')) s = connect() token = client.get_recovery_tokens(s, pwd, keyid.encode('utf8')) print("successfully created opaque store record. Store the following recovery token, in case this record is locked") print(token) def read(pwd, keyid): s = connect() print(client.get(s, pwd, keyid.encode('utf8'))) def replace(pwd, keyid, path, force=False): with open(path,'r') as fd: data = fd.read() s = connect() client.update(s, pwd, keyid.encode('utf8'), data.encode('utf8'), force) def erase(pwd, keyid, ctx, force=False): s = connect() client.delete(s, pwd, keyid.encode('utf8'), force) # also handle delete sphinx record in case ostore.erase m = ctx['m'](ctx['servers']) m.connect() ctx['delete'](m, ctx['pwd'], ctx['user'], ctx['host']) def changepwd(pwd, keyid, ctx, force=False): m = ctx['m'](ctx['servers']) m.connect() newpwd = ctx['change'](m, ctx['pwd'], ctx['newpwd'], ctx['user'], ctx['host']) s = connect() data = client.get(s, pwd, keyid.encode('utf8')) s = connect() client.delete(s, pwd, keyid.encode('utf8'), force) s = connect() client.create(s, newpwd, keyid.encode('utf8'), data.encode('utf8')) s = connect() token = client.get_recovery_tokens(s, newpwd, keyid.encode('utf8')) m = ctx['m'](ctx['servers']) m.connect() ctx['commit'](m, ctx['pwd'], ctx['user'], ctx['host']) print("Store the following recovery token, in case this record is locked") print(token) def edit(pwd, keyid, force=False): if not os.path.exists('/dev/tty'): print("can only edit on systems that have /dev/tty, sorry") return False s = connect() data = client.get(s, pwd, keyid.encode('utf8')) fd, fname = mkstemp() fd = os.fdopen(fd,'w') fd.write(data) fd.close() tty = os.open("/dev/tty", os.O_RDWR|os.O_LARGEFILE) subprocess.run([os.environ.get("EDITOR"), fname], stdin=tty, stdout=tty, stderr=tty) with open(fname,"r") as fd: data = fd.read() os.unlink(fname) s = connect() client.update(s, pwd, keyid.encode('utf8'), data.encode('utf8'), force) def recoverytoken(pwd, keyid): s = connect() token = client.get_recovery_tokens(s, pwd, keyid.encode('utf8')) print("Store the following recovery token, in case this record is locked") print(token) def unlock(pwd, keyid, token): # unlock + get s = connect() client.unlock(s, token, keyid.encode('utf8')) s = connect() print(client.get(s, pwd, keyid.encode('utf8'))) cmds = {'store': store, 'read': read, 'replace': replace, 'edit': edit, 'changepwd': changepwd, 'erase': erase, 'recovery-tokens': recoverytoken, 'unlock': unlock} def parse(params): if params[1] not in cmds: return False op = cmds[params[1]] args = [] if params[1] in {'replace', 'edit', 'erase', 'changepwd'} and params[2]=='force': del params[2] args.append(True) keyid=params[2] if params[1] in {'store', 'replace'}: if not os.path.isfile(params[3]): raise ValueError(f'opaque store parameter "{params[3]}" is not a file, how would i store it?') args.insert(0, params[3]) if params[1] == 'unlock': args.insert(0,params[3]) return op, keyid, args �������������������������������������������������������pwdsphinx-2.0.0-rc5/pwdsphinx/sphinx.py�������������������������������������������������������������0000775�0000000�0000000�00000116027�14745011664�0020155�0����������������������������������������������������������������������������������������������������ustar�00root����������������������������root����������������������������0000000�0000000������������������������������������������������������������������������������������������������������������������������������������������������������������������������#!/usr/bin/env python3 # SPDX-FileCopyrightText: 2018-2024, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later import sys, os, socket, ssl, struct, platform, getpass, binascii, zlib import concurrent.futures from SecureString import clearmem import pysodium, pyoprf from qrcodegen import QrCode try: from zxcvbn import zxcvbn except ImportError: zxcvbn = None from equihash import solve from itertools import permutations from pyoprf.multiplexer import Multiplexer try: from pwdsphinx import bin2pass, v1sphinx from pwdsphinx.config import getcfg from pwdsphinx.consts import * from pwdsphinx.utils import split_by_n from pwdsphinx.ext import init_browser_ext from pwdsphinx.converter import convert from pwdsphinx import ostore except ImportError: import bin2pass, ostore, v1sphinx from config import getcfg from consts import * from utils import split_by_n from ext import init_browser_ext from converter import convert win=False if platform.system() == 'Windows': win=True #### config #### cfg = getcfg('sphinx') verbose = cfg['client'].get('verbose', False) hostname = cfg['client'].get('address','127.0.0.1') address = socket.gethostbyname(hostname) port = int(cfg['client'].get('port',2355)) datadir = os.path.expanduser(cfg['client'].get('datadir','~/.config/sphinx')) try: ssl_cert = os.path.expanduser(cfg['client'].get('ssl_cert')) # only for dev, production system should use proper certs! except TypeError: # ignore exception in case ssl_cert is not set, thus None is attempted to expand. ssl_cert = None # make RWD optional in (sign|seal)key, if it is b'' then this protects against # offline master pwd bruteforce attacks, drawback that for known (host,username) tuples # the seeds/blobs can be controlled by an attacker if the masterkey is known rwd_keys = cfg['client'].get('rwd_keys', False) validate_password = cfg['client'].get('validate_password',True) userlist = cfg['client'].get('userlist', True) threshold = int(cfg['client'].get('threshold') or "1") ts_epsilon = 1200 # todo make configurable servers = cfg.get('servers',{}) delete_upgraded = False if v1sphinx.enabled: delete_upgraded = cfg['client'].get('delete_upgraded',False) if len(servers)>1: if threshold < 2: print('if you have multiple servers in your config, you must specify a threshold >1 also') exit(1) if len(servers) 1: print(f'threshold({threshold}) must be less or equal than the number of servers({len(servers)}) in your config') exit(1) if verbose: print("hostname:", hostname, file=sys.stderr) print("address:", address, file=sys.stderr) print("port:", port, file=sys.stderr) print("datadir:", datadir, file=sys.stderr) print("ssl_cert:", ssl_cert, file=sys.stderr) print("rwd_keys:", rwd_keys, file=sys.stderr) print("validate_password:", validate_password, file=sys.stderr) print("userlist:", userlist, file=sys.stderr) print("threshold:", threshold, file=sys.stderr) for name, server in servers.items(): print(f"{name} {server.get('host','localhost')}:{server.get('port', 2355)} {server['ltsigkey']} cert: {server.get('ssl_cert')}") #### consts #### ENC_CTX = b"sphinx encryption key" SIGN_CTX = b"sphinx signing key" SALT_CTX = b"sphinx host salt" PASS_CTX = b"sphinx password context" CHECK_CTX = b"sphinx check digit context" #### Helper fns #### def get_masterkey(): try: with open(os.path.join(datadir,'masterkey'), 'rb') as fd: mk = fd.read() return mk except FileNotFoundError: raise ValueError("ERROR: Could not find masterkey!\nIf sphinx was working previously it is now broken.\nIf this is a fresh install all is good, you just need to run `%s init`." % sys.argv[0]) def get_signkey(id, rwd): mk = get_masterkey() seed = pysodium.crypto_generichash(SIGN_CTX, mk) clearmem(mk) # rehash with rwd so the user always contributes his pwd and the sphinx server it's seed seed = pysodium.crypto_generichash(seed, id) if rwd_keys: seed = pysodium.crypto_generichash(seed, rwd) pk, sk = pysodium.crypto_sign_seed_keypair(seed) clearmem(seed) return sk, pk def get_sealkey(): mk = get_masterkey() sk = pysodium.crypto_generichash(ENC_CTX, mk) clearmem(mk) return sk def encrypt_blob(blob): # todo implement padding to hide length information sk = get_sealkey() nonce = pysodium.randombytes(pysodium.crypto_secretbox_NONCEBYTES) ct = pysodium.crypto_aead_xchacha20poly1305_ietf_encrypt(blob,VERSION,nonce,sk) clearmem(sk) return VERSION+nonce+ct def decrypt_blob(blob): # todo implement padding to hide length information sk = get_sealkey() version = blob[:1] if version > VERSION: raise ValueError("Your client is too old to handle this response. Please update your client.") blob = blob[1:] nonce = blob[:pysodium.crypto_secretbox_NONCEBYTES] blob = blob[pysodium.crypto_secretbox_NONCEBYTES:] res = pysodium.crypto_aead_xchacha20poly1305_ietf_decrypt(blob,version,nonce,sk) clearmem(sk) return version, res def sign_blob(blob, id, rwd): sk, pk = get_signkey(id, rwd) res = pysodium.crypto_sign_detached(blob,sk) clearmem(sk) return b''.join((blob,res)) def getsalt(): mk = get_masterkey() salt = pysodium.crypto_generichash(SALT_CTX, mk) clearmem(mk) return salt def getid1(host,user,peer,salt=None): if salt is None: salt = getsalt() user_len = struct.pack('!H', len(user)) host_len = struct.pack('!H', len(host)) peer_len = struct.pack('!H', len(peer)) return pysodium.crypto_generichash(b''.join((user_len,user.encode(), host_len,host.encode(), peer_len,peer.encode())), salt, 32) def getid(host, user, m): salt = getsalt() ids = [] for peer in m: ids.append(getid1(host,user,peer.name,salt)) return ids def oprf2rwd(r, beta, pwd, host, user): rwd = pyoprf.unblind_finalize(r, beta, pwd) salt = pysodium.crypto_generichash(getsalt() + struct.pack('!H', len(user.encode('utf8'))) + user.encode('utf8') + struct.pack('!H', len(host.encode('utf8'))) + host.encode('utf8'), outlen=pysodium.crypto_pwhash_SALTBYTES) return pysodium.crypto_pwhash(pyoprf.OPRF_BYTES, rwd, salt, pysodium.crypto_pwhash_OPSLIMIT_INTERACTIVE, pysodium.crypto_pwhash_MEMLIMIT_INTERACTIVE) def unpack_rule(ct): version, packed = decrypt_blob(ct) xor_mask = packed[-64:] v = int.from_bytes(packed[:-64], "big") size = v & ((1<<7) - 1) rule = {c for i,c in enumerate(('u','l','d')) if (v >> 7) & (1 << i)} symbols = [c for i,c in enumerate(bin2pass.symbols) if (v>>(7+3) & (1<>(7+3+33)) else: check_digit = 0 return rule, symbols, size, check_digit, xor_mask def pack_rule(char_classes, syms, size, check_digit, xor_mask=None, with_schema=False): # pack rules into and encrypt them if set(char_classes) - {'u','l','d'}: raise ValueError("ERROR: rules can only contain any of 'uld'.") if set(syms) - set(bin2pass.symbols) != set(): raise ValueError("ERROR: symbols can only contain any of '%s'." % bin2pass.symbols) if not with_schema and (char_classes == '' and len(syms)<2): raise ValueError("ERROR: no char classes and not enough symbols specified.") if not with_schema and (xor_mask is None and (char_classes == '' and len(syms)<2)): raise ValueError("ERROR: no char classes and not enough symbols specified.") if xor_mask is None: xor_mask = b'\x00' * 64 elif len(xor_mask)!=64: raise ValueError("ERROR: xor_mask must be 64bytes, is instead: %d." % len(xor_mask)) if size<0 or size>127: raise ValueError("ERROR: invalid max password size: %d." % size) packed = size packed = packed + (sum(1<= 2**16: s.close() raise ValueError("ERROR: list of usernames is bigger than 64KB. %d" % bsize) blob = struct.pack("!H", bsize) + blob # writes need to be signed, and sinces its a new blob, we need to attach the pubkey blob = b''.join([pk, blob]) # again no rwd, to be independent of the master pwd blob = sign_blob(blob, id, b'') else: blob = read_pkt(s, bsize) if blob == b'fail': s.close() raise ValueError("reading list of user names failed") version, blob = decrypt_blob(blob) items = {x for x in blob.decode().split('\x00') if x} # this should not happen, but maybe it's a sign of corruption? if item in items: print(f'warning: "{item}" is already in the user record', file=sys.stderr) items.add(item) blob = ('\x00'.join(sorted(items))).encode() # notice we do not add rwd to encryption of user blobs blob = encrypt_blob(blob) bsize = len(blob) if bsize >= 2**16: s.close() raise ValueError("ERROR: list of user names is bigger than 64KB. %d" % bsize) blob = struct.pack("!H", bsize) + blob blob = sign_blob(blob, id, b'') s.send(blob) def auth(m,ops,ids,host,user,alpha=None,pwd=None,r=None): if r is None: nonces = m.gather(32) if nonces is None: m.close() return False nonces = list(enumerate(nonces)) rwd = b'' else: msgs = m.gather(65,proc=lambda x: (x[:33],x[33:])) if msgs is None: m.close() return False nonces = [(idx,resp[1]) for idx, resp in enumerate(msgs) if resp is not None] if sum(1 for m in msgs if m is not None) < len(m): raise ValueError("auth: not all peers answered or authenticated") if len(servers)>1: beta = pyoprf.thresholdmult([resp[0] for resp in msgs if resp is not None][:threshold]) else: beta = msgs[0][0][1:] #rwd = pyoprf.unblind_finalize(r, beta, pwd) rwd = oprf2rwd(r, beta, pwd, host, user) for (idx, nonce), op in zip(nonces, ops): sk, pk = get_signkey(ids[idx], rwd) sig = pysodium.crypto_sign_detached(op+nonce,sk) clearmem(sk) m.send(idx, sig) clearmem(rwd) responses = m.gather(6) if responses is None: m.close() return False fails = 0 for idx, resp in enumerate(responses): if resp==b'\x00\x04auth': continue if resp==b'\x00\x04fail': print(f'authentication failed for {m[idx].name}') m[idx].close() fails+=1 else: raise ValueError("unexpected auth result") if fails > 0: raise ValueError("some peers have failed to authenticate us") return True def ratelimit_step1(m, reqs): for i, req in enumerate(reqs): pkt0 = b''.join([CHALLENGE_CREATE, req]) m[i].send(pkt0) challenges = m.gather(1+1+8+32) # n,k,ts,sig if challenges is None: m.close() return False m.close() return challenges def ratelimit(m,reqs): challenges = ratelimit_step1(m, reqs) puzzles = [] with concurrent.futures.ProcessPoolExecutor() as executor: for idx, challenge in enumerate(challenges): if challenge in {None, b''}: continue n = challenge[0] k = challenge[1] try: os.write(3,f"{idx} {n} {k}\n".encode('utf8')) except OSError: pass if k==4: if n < 90: if verbose: print(f"{m[idx].name} sent an easy puzzle: %d" % n, file=sys.stderr) elif n > 100: if verbose: print(f"{m[idx].name} sent a hard puzzle: %d" % n, file=sys.stderr) else: if verbose: print(f"{m[idx].name} sent a moderate puzzle: %d" % n, file=sys.stderr) seed = challenge + reqs[idx] solution = executor.submit(solve,n,k,seed) puzzles.append((challenge, solution, idx)) for puzzle in puzzles: m[puzzle[2]].connect() pkt1 = b''.join([CHALLENGE_VERIFY, puzzle[0]]) m.send(puzzle[2], pkt1) m.send(puzzle[2], reqs[puzzle[2]]) m.send(puzzle[2], puzzle[1].result()) return m def getpwd(): if sys.stdin.isatty(): return getpass.getpass("enter your password please: ").encode('utf8') else: return sys.stdin.buffer.readline().rstrip(b'\n') def dkg(m, op, threshold, keyids, alpha): n = len(m) # load peer long-term keys peer_lt_pks = [] for name, server in servers.items(): peer_lt_pks.append(server.get('ltsigkey')) if op == CREATE_DKG: tp, msg0 = pyoprf.tpdkg_start_tp(n, threshold, ts_epsilon, "threshold sphinx dkg create k", peer_lt_pks) for index, id in enumerate(keyids): msg = b"%c%s%s%s" % (CREATE_DKG, id, alpha, msg0) m.send(index,msg) else: tp, msg0 = pyoprf.tpdkg_start_tp(n, threshold, ts_epsilon, "threshold sphinx dkg change k", peer_lt_pks) msg = b"%s%s" % (alpha, msg0) m.broadcast(msg) while pyoprf.tpdkg_tp_not_done(tp): ret, sizes = pyoprf.tpdkg_tp_input_sizes(tp) peer_msgs = [] if ret: if sizes[0] > 0: #print(f"step: {tp[0].step}") peer_msgs = m.gather(sizes[0],n) #,debug=True) else: peer_msgs = [m[i].read(s) if s>0 else b'' for i, s in enumerate(sizes)] msgs = b''.join(peer_msgs) cur_step = pyoprf.tpdkg_tpstate_step(tp) try: out = pyoprf.tpdkg_tp_next(tp, msgs) except Exception as e: m.close() if pyoprf.tpdkg_tpstate_cheater_len(tp) > 0: cheaters, cheats = pyoprf.tpdkg_get_cheaters(tp) msg=[f"Warning during the distributed key generation the peers misbehaved: {sorted(cheaters)}"] for k, v in cheats: msg.append(f"\tmisbehaving peer: {k} was caught: {v}") msg = '\n'.join(msg) raise ValueError(msg) else: raise ValueError(f"{e} | tp step {cur_step}") if(len(out)>0): for i in range(pyoprf.tpdkg_tpstate_n(tp)): msg = pyoprf.tpdkg_tp_peer_msg(tp, out, i) m.send(i, msg) betas = m.gather(33, n) if betas is None: m.close() raise ValueError(f"failed to get oprf responses from shareholders in final step of dkg") rwds = set(pyoprf.thresholdmult([betas[i] for i in order]) for order in permutations(range(n),threshold)) if len(rwds) != 1: raise ValueError("DKG shares are inconsistent, aborting operation.") return list(rwds)[0] #### OPs #### def init(): init_browser_ext() kfile = os.path.join(datadir,'masterkey') if os.path.exists(kfile): print("Already initialized.", file=sys.stderr) return 1 if not os.path.exists(datadir): os.makedirs(datadir, 0o700, exist_ok=True) mk = pysodium.randombytes(32) try: with open(kfile,'wb') as fd: if not win: os.fchmod(fd.fileno(),0o600) fd.write(mk) except: print("ERROR: failed to initialize master key", file=sys.stderr) return 1 finally: print("you want to make a backup of the following masterkey, keep it safe and secure", binascii.b2a_base64(mk)) print('this key is also stored - and must be available - at:', kfile) clearmem(mk) # create health check record m = Multiplexer(servers) m.connect() create(m, b"all ok?", "healthcheck", "sphinx servers", target="everything works fine") return 0 def create(m, pwd, user, host, char_classes='uld', symbols=bin2pass.symbols, size=0, target=None): # 1st step OPRF on the new seed ids = getid(host, user, m) r, alpha = pyoprf.blind(pwd) if threshold > 1: beta = dkg(m, CREATE_DKG, threshold, ids, alpha) else: msg = b''.join([CREATE, ids[0], alpha]) m.broadcast(msg) # wait for response from sphinx server beta = m.gather(33) if beta is None: m.close() raise ValueError("ERROR: Creating new password, the record probably already exists or the first message to server was corrupted during transport.") # or (less probable) the initial message was longer/shorter than the 65 bytes we sent # or (even? less probable) the value alpha received by the server is not a valid point # both of these less probable causes point at corruption during transport beta = beta[0][1:] #rwd = pyoprf.unblind_finalize(r, beta, pwd) rwd = oprf2rwd(r, beta, pwd, host, user) # second phase, derive new auth signing pubkey sign_keys=[] for id in ids: sk, pk = get_signkey(id, rwd) clearmem(sk) sign_keys.append(pk) if validate_password: checkdigit = pysodium.crypto_generichash(CHECK_CTX, rwd, 1)[0] else: checkdigit = 0 if target and not user.startswith('raw://'): trwd, char_classes, symbols = bin2pass.pass2bin(target, None) xormask = xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),trwd) size = len(target) #char_classes = 'uld' #symbols = bin2pass.symbols elif target and user.startswith('raw://'): size = len(target) target = target + pysodium.randombytes(64 - len(target)) xormask = xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),target) else: _uppers = set([x.decode('utf8') for x in bin2pass.sets['u']]) _lowers = set([x.decode('utf8') for x in bin2pass.sets['l']]) _digits = set([x.decode('utf8') for x in bin2pass.sets['d']]) _symbols = set(symbols) while True: xormask = pysodium.randombytes(64) candidate = convert( xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),xormask), user, char_classes,size,symbols) if 1 <= size < 8: break # too much of a bias especially for ulsd when size < 5 if 'u' in char_classes and len(_uppers.intersection(candidate)) == 0: continue if 'l' in char_classes and len(_lowers.intersection(candidate)) == 0: continue if 'd' in char_classes and len(_digits.intersection(candidate)) == 0: continue if len(_symbols) > 0 and len(_symbols.intersection(candidate)) == 0: continue break rule = pack_rule(char_classes, symbols, size, checkdigit, xormask, with_schema='://' in user) # send over new signed(pubkey, rule) for i,(id,pk) in enumerate(zip(ids, sign_keys)): msg = b''.join([pk, rule]) msg = sign_blob(msg, id, rwd) m[i].send(msg) # add user to user list for this host # a malicous server could correlate all accounts on this services to this users here for p in m: id = getid1(host, '', p.name) update_rec(p.fd, id, user) p.close() rwd = xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),xormask) ret = convert(rwd,user,char_classes,size,symbols) clearmem(rwd) return ret def try_v1get(pwd, host, user): rwd, classes, size, symbols = v1sphinx.get(pwd, user, host) ret = convert(rwd,user,classes,size,symbols) if not user.startswith("otp://"): target = ret else: target = bin2pass.derive(rwd, classes, size, symbols) clearmem(rwd) # lift to v2 m = Multiplexer(servers) m.connect() cret = create(m, pwd, user, host, target=target) assert ret == cret print(f"updated v1 record for {user}@{host} to v2", file=sys.stderr) if delete_upgraded: try: v1sphinx.delete(pwd, user, host) except: print(f"failed to delete v1 record for {user}@{host}", file=sys.stderr) else: print(f"deleted v1 record for {user}@{host} record after update to v2", file=sys.stderr) return ret def get(m, pwd, user, host): ids = getid(host, user, m) r, alpha = pyoprf.blind(pwd) msgs = [b''.join([GET, id, alpha]) for id in ids] try: m = ratelimit(m, msgs) except ValueError: if v1sphinx.enabled: return try_v1get(pwd, host, user) raise connected = sum([1 for p in m if p.state == 'connected']) if connected < threshold: raise ValueError(f"Failed to get enough shareholders to respond: {connected} responded") if len(servers) > 1: try: resps = m.gather(33+RULE_SIZE, threshold) except ValueError: if v1sphinx.enabled: return try_v1get(pwd, host, user) raise if resps is None: m.close() raise ValueError("Failed to get any answers from shareholders") if len({x for x in resps if x is not None}) == 1 and {x for x in resps if x is not None} == {b'\x00\x04fail'}: raise ValueError("ERROR: The record does not exist, there's a chance you are being fished.") resps = [(x[:33], x[33:]) for x in resps if x is not None] if len({resp[1] for resp in resps if resp}) != 1: m.close() raise ValueError("ERROR: servers disagree on rules") rules = resps[0][1] beta = pyoprf.thresholdmult([resp[0] for resp in resps if resp]) else: try: resp = m.gather(33+RULE_SIZE, 1)[0] # beta + sealed rules except ValueError: if v1sphinx.enabled: return try_v1get(pwd, host, user) raise if resp is None: m.close() raise ValueError("Failed to get answers from sphinx server") if resp == b'\x00\x04fail': raise ValueError("ERROR: The record does not exist, there's a chance you are being fished.") if len(resp)!=33+RULE_SIZE: m.close() raise ValueError("ERROR: the request to server was corrupted during transport.") beta = resp[1:33] rules = resp[33:] #rwd = pyoprf.unblind_finalize(r, beta, pwd) rwd = oprf2rwd(r, beta, pwd, host, user) m.close() try: classes, symbols, size, checkdigit, xormask = unpack_rule(rules) except ValueError: m.close() raise ValueError("ERROR: failed to unpack password rules from server") if validate_password and (checkdigit != (pysodium.crypto_generichash(CHECK_CTX, rwd, 1)[0] & ((1<<5)-1))): m.close() raise ValueError("ERROR: bad checkdigit") rwd = xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),xormask) ret = convert(rwd,user,classes,size,symbols) clearmem(rwd) return ret def read_blob(m, ids, host, rwd = b''): msgs = [b''.join([READ, id]) for id in ids] m = ratelimit(m, msgs) if auth(m,msgs,ids,host,'') is False: m.close() return bsizes = set(m.gather(2, proc = lambda x: struct.unpack('!H', x)[0])) if bsizes is None: m.close() raise ValueError("failed to get sizes for user blobs from threshold servers") if len(bsizes) != 1: m.close() raise ValueError(f"ERROR: inconsistent user list blob sizes: {bsizes}") bsize = list(bsizes)[0] #print('got all blobsizes') if bsize == 0: # this should not happen, it means something is corrupt m.close() raise ValueError("ERROR: server has no associated user record for this host", file=sys.stderr) blobs = m.gather(bsize) if blobs is None: m.close() raise ValueError("failed to read user blobs from sphinx servers") #print('got all blobs') ptblobs = set() for blob in blobs: if blob == b'fail': m.close() raise ValueError("ERROR: invalid signature on list of users") ptblobs.add(decrypt_blob(blob)) if len(ptblobs)!=1: raise ValueError(f"ERROR: inconsistent user list blobs") blob = list(ptblobs)[0] return blob def users(m, host): _, users = read_blob(m, getid(host, '', m), host) or (None, set()) if users: users = set(users.decode().split('\x00')) if v1sphinx.enabled: try: v1users = v1sphinx.users(host) except: v1users = set() users = users | v1users if not users: return "no users found" return '\n'.join(sorted(users)) def change(m, oldpwd, newpwd, user, host, classes='uld', symbols=bin2pass.symbols, size=0, target=None): ids = getid(host, user, m) r, alpha = pyoprf.blind(oldpwd) if threshold > 1: msgs = [b''.join([CHANGE_DKG, id, alpha]) for id in ids] else: msgs = [b''.join([CHANGE, id, alpha]) for id in ids] m = ratelimit(m, msgs) # auth: do sphinx with current seed, use it to sign the nonce if not auth(m,msgs,ids,host,user,alpha,oldpwd,r): m.close() raise ValueError("ERROR: Failed to authenticate using old password to server while changing password on server or record doesn't exist") r, alpha = pyoprf.blind(newpwd) if threshold > 1: beta = dkg(m, CHANGE_DKG, threshold, None, alpha) else: m.broadcast(alpha) beta = m.gather(33,1) # beta if beta is None or len(beta[0])!=33: m.close() raise ValueError("ERROR: changing password failed due to corruption during transport.") beta = beta[0][1:] #rwd = pyoprf.unblind_finalize(r, beta, newpwd) rwd = oprf2rwd(r, beta, newpwd, host, user) if validate_password: checkdigit = pysodium.crypto_generichash(CHECK_CTX, rwd, 1)[0] else: checkdigit = 0 if target: trwd, classes, symbols = bin2pass.pass2bin(target, None) xormask = xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),trwd) print('asdf', len(trwd), len(xormask)) size = len(target) else: xormask = pysodium.randombytes(64) rule = pack_rule(classes, symbols, size, checkdigit, xormask) for i, id in enumerate(ids): sk, pk = get_signkey(id, rwd) clearmem(sk) # send over new signed(pubkey) m[i].send(sign_blob(b''.join([pk,rule]), id, rwd)) if set(m.gather(2))!={b'ok'}: m.close() raise ValueError("ERROR: failed to update password rules on the server during changing of password.") m.close() rwd = xor(pysodium.crypto_generichash(PASS_CTX, rwd, outlen=64),xormask) ret = convert(rwd,user,classes,size,symbols) clearmem(rwd) return ret def commit(s, pwd, user, host): return commit_undo(s, COMMIT, pwd, user, host) def undo(s, pwd, user, host): return commit_undo(s, UNDO, pwd, user, host) def delete(m, pwd, user, host): # run sphinx to recover rwd for authentication ids = getid(host, user, m) r, alpha = pyoprf.blind(pwd) msgs = [b''.join([DELETE, id, alpha]) for id in ids] m = ratelimit(m, msgs) #print("solved ratelimit puzzles") if auth(m,msgs,ids,host,user,alpha,pwd,r) is False: m.close() raise ValueError("ERROR: Failed to authenticate to server while deleting password on server or record doesn't exist") #print("authenticated") if not userlist: m.broadcast(b"\0"*96) else: # delete user from user list for this host # a malicous server could correlate all accounts on this services to this users here # first query user record for this host for p in m: id = getid1(host, '', p.name) signed_id = sign_blob(id, id, b'') p.send(signed_id) # wait for user blob bsizes = set(m.gather(2, proc = lambda x: struct.unpack('!H', x)[0])) if bsizes is None: m.close() raise ValueError("failed to get sizes for user blobs from threshold servers") if len(bsizes) != 1: m.close() raise ValueError(f"ERROR: inconsistent user list blob sizes: {bsizes}") bsize = list(bsizes)[0] #print('got all blobsizes') if bsize == 0: # this should not happen, it means something is corrupt m.close() raise ValueError("ERROR: server has no associated user record for this host", file=sys.stderr) blobs = m.gather(bsize) if blobs is None: m.close() raise ValueError("failed to read user blobs from sphinx servers") #print('got all blobs') ptblobs = set() for blob in blobs: if blob == b'fail': m.close() raise ValueError("ERROR: invalid signature on list of users") ptblobs.add(decrypt_blob(blob)) if len(ptblobs)!=1: raise ValueError(f"ERROR: inconsistent user list blobs") version, blob = list(ptblobs)[0] users = set(blob.decode().split('\x00')) if user not in users: # this should not happen, but maybe it's a sign of corruption? m.close() raise ValueError(f'warning "{user}" is not in user record', file=sys.stderr) users.remove(user) blob = ('\x00'.join(sorted(users))).encode() # notice we do not add rwd to encryption of user blobs for p in m: xblob = encrypt_blob(blob) bsize = len(xblob) if bsize >= 2**16: m.close() raise ValueError("ERROR: blob is bigger than 64KB.") xblob = struct.pack("!H", bsize) + xblob id = getid1(host, '', p.name) xblob = sign_blob(xblob, id, b'') #print(f'updating {p.name}\t{xblob.hex()}') p.send(xblob) if set(m.gather(2))!={b'ok'}: m.close() raise ValueError("ERROR: server failed to save updated list of user names for host: %s." % host) m.close() return True def print_qr(qrcode: QrCode) -> None: chars = { (True, True): ' ', # empty (False, True): '\u2580', # upper (True, False): '\u2584', # lower (False, False): '\u2588', # full } border = 1 for y in range(-border, qrcode.get_size() + border, 2): for x in range(-border, qrcode.get_size() + border): print(chars[(qrcode.get_module(x,y),qrcode.get_module(x,y+1))], end="") print() print() def healthcheck(m): pwd = b"all ok?" user = "healthcheck" host = "sphinx servers" ids = getid(host, user, m) r, alpha = pyoprf.blind(pwd) msgs = [b''.join([GET, id, alpha]) for id in ids] return ratelimit_step1(m, msgs) != False def qrcode(output, key): mk=get_masterkey() if key else b'' hosts = [] for name, server in servers.items(): if len(name)>255: raise ValueError(f"server name: {name} is too long, max 255 allowed in qr codes") hosts.append(bytes([len(name.encode('utf8'))]) + name.encode('utf8') + bytes([len(server.get('host','localhost'))]) + server.get('host','localhost').encode('utf8') + struct.pack("!H", server.get('port', 2355))) hosts=zlib.compress(b''.join(hosts)) data = (bytes([1*key+2*rwd_keys + 4*validate_password + 8*userlist + 16+delete_upgraded, threshold]) + mk + hosts) qr = QrCode.encode_binary(data, QrCode.Ecc.LOW) if key: clearmem(mk) clearmem(data) if output=='txt': print_qr(qr) else: print(qr.to_svg_str(2)) def ostore_handler(m, pwd, params, newpwd=None): op, keyid, args = ostore.parse(params) user = keyid host = 'opaque store' if op == ostore.changepwd: args.insert(0, {'m': Multiplexer, 'servers': servers, 'change': change, 'commit': commit, 'user': user, 'host': host, 'pwd': pwd, 'newpwd': newpwd}) elif op == ostore.erase: args.insert(0, {'m': Multiplexer, 'servers': servers, 'delete': delete, 'pwd': pwd, 'user': user, 'host': host}) if op == ostore.store: rwd = create(m, pwd, user, host) else: rwd = get(m, pwd, user, host) op(rwd, keyid, *args) return True def usage(params, help=False): print("usage:") print("SPHINX style passwords") print(" %s init" % params[0]) print(" echo -n 'password' | %s <[u][l][d][s] [] []> | []" % params[0]) print(" echo -n 'password' | %s get " % params[0]) if rwd_keys: print(" echo -n 'password' | %s " % params[0]) else: print(" %s " % params[0]) if userlist: print(" %s list " % params[0]) print(" %s healthcheck" % params[0]) print(" %s qr [svg] [key]" % params[0]) if ostore.available: ostore.usage(params) if help: sys.exit(0) sys.exit(100) def arg_rules(params): user = params[2] site = params[3] size = None symbols = None classes = None target = None for param in params[4:]: if not classes and set(list(param)) - {'u','l','s','d'} == set(): if 's' in param: symbols = bin2pass.symbols classes = ''.join(set(param) - set(['s'])) else: classes = param symbols = '' continue if not size: try: tmp = int(param) if tmp<79: size = tmp continue except: pass if set(param) - set(bin2pass.symbols) == set(): symbols = param continue if verbose: print(f'using "{param}" as target password', file=sys.stderr) target = param if target is not None and (symbols or classes or size): print(f"invalid args for {param[1]}: \"{params[4:]}\"", file=sys.stderr) usage(param) return user, site, classes or 'uld', symbols if symbols is not None else bin2pass.symbols, size or 0, target def test_pwd(pwd): if zxcvbn is None: return q = zxcvbn(pwd.decode('utf8')) print("your %s%s (%s/4) master password can be online recovered in %s, and offline in %s, trying ~%s guesses" % ("★" * q['score'], "☆" * (4-q['score']), q['score'], q['crack_times_display']['online_throttling_100_per_hour'], q['crack_times_display']['offline_slow_hashing_1e4_per_second'], q['guesses']), file=sys.stderr) #### main #### def main(params=sys.argv): #import ctypes #libc = ctypes.cdll.LoadLibrary('libc.so.6') #fdopen = libc.fdopen #log_file = ctypes.c_void_p.in_dll(pyoprf.liboprf,'log_file') #fdopen.restype = ctypes.c_void_p #log_file.value = fdopen(2, 'w') if len(params) < 2: usage(params, True) m = Multiplexer(servers) cmd = None args = [] if params[1] in ('help', '-h', '--help'): usage(params, True) elif params[1] == 'create': try: user,site,classes, syms, size, target = arg_rules(params) except: usage(params) cmd = create args = (user, site, classes, syms, size, target) elif params[1] == 'init': if len(params) != 2: usage(params) sys.exit(init()) elif params[1] == 'healthcheck': cmd = healthcheck args = tuple() elif params[1] == 'get': if len(params) != 4: usage(params) cmd = get args = (params[2], params[3]) elif params[1] == 'change': try: user,site,classes,syms,size, target = arg_rules(params) except: usage(params) cmd = change args = (user, site, classes, syms, size, target) elif params[1] == 'commit': if len(params) != 4: usage(params) cmd = commit args = (params[2], params[3]) elif params[1] == 'delete': if len(params) != 4: usage(params) cmd = delete args = (params[2], params[3]) elif userlist and params[1] == 'list': if len(params) != 3: usage(params) cmd = users args = (params[2],) elif params[1] == 'undo': if len(params) != 4: usage(params) cmd = undo args = (params[2],params[3]) elif params[1] == 'qr': cmd = qrcode output = 'txt' key = False if "svg" in params: output="svg" del params[params.index("svg")] if "key" in params: key=True del params[params.index("key")] if params[2:]: usage(params) qrcode(output, key) return elif ostore.available and ostore.is_cmd(params): cmd = ostore_handler args = [params] else: usage(params) error = None if cmd not in {users, healthcheck}: pwd = '' if (rwd_keys or cmd in {create,change,get, ostore_handler}): pwd = getpwd() if cmd == change or (cmd == ostore_handler and params[1] == 'changepwd'): newpwd = getpwd() if not newpwd: newpwd = pwd test_pwd(newpwd) if cmd == change: args=(newpwd,) + args else: args=args + [newpwd] if cmd == create: test_pwd(pwd) try: m.connect() ret = cmd(m, pwd, *args) except Exception as exc: error = exc ret = False raise # only for dbg clearmem(pwd) else: try: m.connect() ret = cmd(m, *args) except Exception as exc: error = exc ret = False raise # only for dbg m.close() if not ret: if not error: print("fail", file=sys.stderr) sys.exit(3) # error not handled by exception print(error, file=sys.stderr) if str(error) == "ERROR: bad checkdigit": sys.exit(2) # bad check digit sys.exit(1) # generic errors if cmd not in {delete, undo, commit, ostore_handler, healthcheck}: print(ret) sys.stdout.flush() clearmem(ret) elif ret != True: print("reached code that should not be reachable: ", ret) if __name__ == '__main__': try: main(sys.argv) except Exception: print("fail", file=sys.stderr) raise # only for dbg pwdsphinx-2.0.0-rc5/pwdsphinx/utils.py000066400000000000000000000002201474501166400177640ustar00rootroot00000000000000from itertools import zip_longest # for Python 3.x def split_by_n(iterable, n): return list(zip_longest(*[iter(iterable)]*n, fillvalue='')) pwdsphinx-2.0.0-rc5/pwdsphinx/v1sphinx.py000077500000000000000000000262111474501166400204170ustar00rootroot00000000000000#!/usr/bin/env python3 # SPDX-FileCopyrightText: 2018-2024, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later import sys, os, socket, ssl, struct, time from SecureString import clearmem from equihash import solve import pysodium try: from pwdsphinx import bin2pass from pwdsphinx.config import getcfg from pwdsphinx.consts import * from pwdsphinx.converter import convert except ImportError: import bin2pass from config import getcfg from consts import * from converter import convert # override consts from consts.py VERSION = b'\x00' RULE_SIZE = 79 #### config #### cfg = getcfg('sphinx') enabled=False verbose = cfg['client'].get('verbose', False) hostname = cfg['client'].get('address') if hostname is not None: enabled = True address = socket.gethostbyname(hostname) port = int(cfg['client'].get('port',2355)) try: ssl_cert = os.path.expanduser(cfg['client'].get('ssl_cert')) # only for dev, production system should use proper certs! except TypeError: # ignore exception in case ssl_cert is not set, thus None is attempted to expand. ssl_cert = None datadir = os.path.expanduser(cfg['client'].get('datadir','~/.config/sphinx')) # make RWD optional in (sign|seal)key, if it is b'' then this protects against # offline master pwd bruteforce attacks, drawback that for known (host,username) tuples # the seeds/blobs can be controlled by an attacker if the masterkey is known rwd_keys = cfg['client'].get('rwd_keys', False) validate_password = cfg['client'].get('validate_password',True) userlist = cfg['client'].get('userlist', True) if verbose and enabled: print("v1 hostname:", hostname, file=sys.stderr) print("v1 address:", address, file=sys.stderr) print("v1 port:", port, file=sys.stderr) print("v1 ssl_cert:", ssl_cert, file=sys.stderr) #### consts #### ENC_CTX = b"sphinx encryption key" SIGN_CTX = b"sphinx signing key" SALT_CTX = b"sphinx host salt" PASS_CTX = b"sphinx password context" CHECK_CTX = b"sphinx check digit context" #### Helper fns #### def get_masterkey(): try: with open(os.path.join(datadir,'masterkey'), 'rb') as fd: mk = fd.read() return mk except FileNotFoundError: raise ValueError("ERROR: Could not find masterkey!\nIf sphinx was working previously it is now broken.\nIf this is a fresh install all is good, you just need to run `%s init`." % sys.argv[0]) def connect(): ctx = ssl.create_default_context() if(ssl_cert): ctx.load_verify_locations(ssl_cert) # only for dev, production system should use proper certs! ctx.check_hostname=False # only for dev, production system should use proper certs! ctx.verify_mode=ssl.CERT_NONE # only for dev, production system should use proper certs! else: ctx.load_default_certs() ctx.verify_mode = ssl.CERT_REQUIRED ctx.check_hostname = True s = socket.socket(socket.AF_INET, socket.SOCK_STREAM) s.settimeout(5) s = ctx.wrap_socket(s, server_hostname=hostname) s.connect((address, port)) return s def get_signkey(id, rwd): mk = get_masterkey() seed = pysodium.crypto_generichash(SIGN_CTX, mk) clearmem(mk) # rehash with rwd so the user always contributes his pwd and the sphinx server it's seed seed = pysodium.crypto_generichash(seed, id) if rwd_keys: seed = pysodium.crypto_generichash(seed, rwd) pk, sk = pysodium.crypto_sign_seed_keypair(seed) clearmem(seed) return sk, pk def get_sealkey(): mk = get_masterkey() sk = pysodium.crypto_generichash(ENC_CTX, mk) clearmem(mk) return sk def encrypt_blob(blob): # todo implement padding to hide length information sk = get_sealkey() nonce = pysodium.randombytes(pysodium.crypto_secretbox_NONCEBYTES) ct = pysodium.crypto_aead_xchacha20poly1305_ietf_encrypt(blob,VERSION,nonce,sk) clearmem(sk) return VERSION+nonce+ct def decrypt_blob(blob): # todo implement padding to hide length information sk = get_sealkey() version = blob[:1] if version > VERSION: raise ValueError("Your client is too old to handle this response. Please update your client.") blob = blob[1:] nonce = blob[:pysodium.crypto_secretbox_NONCEBYTES] blob = blob[pysodium.crypto_secretbox_NONCEBYTES:] res = pysodium.crypto_aead_xchacha20poly1305_ietf_decrypt(blob,version,nonce,sk) clearmem(sk) return version, res def sign_blob(blob, id, rwd): sk, pk = get_signkey(id, rwd) res = pysodium.crypto_sign_detached(blob,sk) clearmem(sk) return b''.join((blob,res)) def getid(host, user): mk = get_masterkey() salt = pysodium.crypto_generichash(SALT_CTX, mk) clearmem(mk) return pysodium.crypto_generichash(b'|'.join((user.encode(),host.encode())), salt, 32) def unpack_rule(ct): version, packed = decrypt_blob(ct) xor_mask = packed[-32:] v = int.from_bytes(packed[:-32], "big") size = v & ((1<<7) - 1) rule = {c for i,c in enumerate(('u','l','d')) if (v >> 7) & (1 << i)} symbols = [c for i,c in enumerate(bin2pass.symbols) if (v>>(7+3) & (1<>(7+3+33)) else: check_digit = 0 return rule, symbols, size, check_digit, xor_mask def xor(x,y): return bytes(a ^ b for (a, b) in zip(x, y)) def ratelimit(s,req): pkt0 = b''.join([CHALLENGE_CREATE, req]) s.send(pkt0) challenge = s.recv(1+1+8+32) # n,k,ts,sig if len(challenge)!= 1+1+8+32: if verbose: print("challengelen incorrect: %s %s" %(len(challenge), repr(challenge)), file=sys.stderr) raise ValueError("ERROR: failed to get ratelimit challenge") s.close() n = challenge[0] k = challenge[1] try: os.write(3,f"{n} {k}\n".encode('utf8')) except OSError: pass if k==4: if n < 90: if verbose: print("got an easy puzzle: %d" % n, file=sys.stderr) elif n > 100: if verbose: print("got a hard puzzle: %d" % n, file=sys.stderr) else: if verbose: print("got a moderate puzzle: %d" % n, file=sys.stderr) seed = challenge + req delta = time.time() solution = solve(n, k, seed) delta = time.time() - delta try: os.write(3,f"{delta}".encode('utf8')) except OSError: pass s = connect() pkt1 = b''.join([CHALLENGE_VERIFY, challenge]) s.send(pkt1) s.send(req) s.send(solution) return s def auth(s,op,id,alpha=None,pwd=None,r=None): if r is None: nonce = s.recv(32) if len(nonce)!=32: return False rwd = b'' else: msg = s.recv(64) if len(msg)!=64: return False beta = msg[:32] nonce = msg[32:] rwd = finish(pwd, r, alpha, beta, id) sk, pk = get_signkey(id, rwd) clearmem(rwd) sig = pysodium.crypto_sign_detached(op+nonce,sk) clearmem(sk) s.send(sig) resp = s.recv(6) if resp==b'\x00\x04auth': return True return False def challenge(pwd): h0 = pysodium.crypto_generichash(pwd, outlen=pysodium.crypto_core_ristretto255_HASHBYTES); H0 = pysodium.crypto_core_ristretto255_from_hash(h0) clearmem(h0) r = pysodium.crypto_core_ristretto255_scalar_random() alpha = pysodium.crypto_scalarmult_ristretto255(r, H0) clearmem(H0) return r, alpha def finish(pwd, r, alpha, beta, salt): if(alpha==beta): raise ValueError("alpha == beta") if not pysodium.crypto_core_ristretto255_is_valid_point(alpha): raise ValueError("invalid beta") rinv = pysodium.crypto_core_ristretto255_scalar_invert(r) H0_k = pysodium.crypto_scalarmult_ristretto255(rinv, beta) clearmem(rinv) rwd0 = pysodium.crypto_generichash(pwd+H0_k, outlen=pysodium.crypto_core_ristretto255_BYTES); clearmem(H0_k) rwd = pysodium.crypto_pwhash(pysodium.crypto_core_ristretto255_BYTES, rwd0, salt[:pysodium.crypto_pwhash_SALTBYTES], pysodium.crypto_pwhash_OPSLIMIT_INTERACTIVE, pysodium.crypto_pwhash_MEMLIMIT_INTERACTIVE) clearmem(rwd0) return rwd #### OPs #### def get(pwd, user, host): if isinstance(pwd, str): pwd = pwd.encode() s = connect() id = getid(host, user) r, alpha = challenge(pwd) msg = b''.join([V1GET, id, alpha]) s = ratelimit(s, msg) resp = s.recv(32+RULE_SIZE) # beta + sealed rules if resp == b'\x00\x04fail' or len(resp)!=32+RULE_SIZE: s.close() raise ValueError("ERROR: Either the record does not exist, or the request to server was corrupted during transport.") beta = resp[:32] rules = resp[32:] rwd = finish(pwd, r, alpha, beta, id) try: classes, symbols, size, checkdigit, xormask = unpack_rule(rules) except ValueError: s.close() raise ValueError("ERROR: failed to unpack password rules from server") s.close() if validate_password and (checkdigit != (pysodium.crypto_generichash(CHECK_CTX, rwd, 1)[0] & ((1<<5)-1))): raise ValueError("ERROR: bad checkdigit") rwd = xor(pysodium.crypto_generichash(PASS_CTX, rwd),xormask) return rwd, classes, size, symbols def delete(pwd, user, host): s = connect() # run sphinx to recover rwd for authentication id = getid(host, user) r, alpha = challenge(pwd) msg = b''.join([V1DELETE, id, alpha]) s = ratelimit(s, msg) if isinstance(pwd, str): pwd = pwd.encode() if not auth(s,msg,id,alpha,pwd,r): s.close() raise ValueError("ERROR: Failed to authenticate to server while deleting password on server or record doesn't exist") if not userlist: s.send(b"\0"*96) else: # delete user from user list for this host # a malicous server could correlate all accounts on this services to this users here # first query user record for this host id = getid(host, '') signed_id = sign_blob(id, id, b'') s.send(signed_id) # wait for user blob bsize = s.recv(2) bsize = struct.unpack('!H', bsize)[0] if bsize == 0: # this should not happen, it means something is corrupt s.close() raise ValueError("ERROR: server has no associated user record for this host", file=sys.stderr) blob = s.recv(bsize) if blob == b'fail': s.close() raise ValueError("ERROR: invalid signature on list of users") version, blob = decrypt_blob(blob) users = set(blob.decode().split('\x00')) if user not in users: # this should not happen, but maybe it's a sign of corruption? s.close() raise ValueError(f'warning "{user}" is not in user record', file=sys.stderr) users.remove(user) blob = ('\x00'.join(sorted(users))).encode() # notice we do not add rwd to encryption of user blobs blob = encrypt_blob(blob) bsize = len(blob) if bsize >= 2**16: s.close() raise ValueError("ERROR: blob is bigger than 64KB.") blob = struct.pack("!H", bsize) + blob blob = sign_blob(blob, id, b'') s.send(blob) if b'ok' != s.recv(2): s.close() raise ValueError("ERROR: server failed to save updated list of user names for host: %s." % host) s.close() return True def read_blob(s, id): msg = b''.join([READ, id]) s = ratelimit(s, msg) if auth(s,msg,id) is False: s.close() return bsize = s.recv(2) bsize = struct.unpack('!H', bsize)[0] blob = s.recv(bsize) s.close() if blob == b'fail': return return decrypt_blob(blob) def users(host): s = connect() res = read_blob(s, getid(host, '')) if not res: return set() version, res = res users = set(res.decode().split('\x00')) return users #print(get(connect(), b'asdf','asdf','test')) #print(delete(connect(), b'asdf','asdf','test')) pwdsphinx-2.0.0-rc5/pwdsphinx/websphinx.py000077500000000000000000000326271474501166400206560ustar00rootroot00000000000000#!/usr/bin/env python3 # # This file is part of WebSphinx. # # SPDX-FileCopyrightText: 2018, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later # # WebSphinx is free software; you can redistribute it and/or modify # it under the terms of the GNU General Public License as published by # the Free Software Foundation either version 3 of the License, or # (at your option) any later version. # # WebSphinx is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License version 3 for more details. # # You should have received a copy of the GNU General Public License along # with this program; if not, If not, see . import subprocess import sys, struct, json, pysodium import cbor2 from zxcvbn import zxcvbn from SecureString import clearmem from pyoprf.multiplexer import Multiplexer from binascii import b2a_base64 from base64 import urlsafe_b64decode try: from pwdsphinx import sphinx, bin2pass from pwdsphinx.config import getcfg except ImportError: import sphinx from config import getcfg cfg = getcfg('sphinx') pinentry = cfg['websphinx']['pinentry'] log = cfg['websphinx'].get('log') if 'webauthn_data_dir' not in cfg['websphinx']: raise Exception("Cannot find webauthn user directory (webauthn_data_dir). Add it to your config file") webauthn_data_dir = cfg['websphinx']['webauthn_data_dir'] def handler(cb, cmd, *args): m = Multiplexer(sphinx.servers) m.connect() cb(cmd(m, *args)) m.close() def getpwd(title): proc=subprocess.Popen([pinentry, '-g'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) out, err = proc.communicate(input=('SETTITLE sphinx password prompt\nSETDESC %s\nSETPROMPT master password\ngetpin\n' % (title)).encode()) if proc.returncode == 0: for line in out.split(b'\n'): if line.startswith(b"D "): return line[2:] def fetchOK(proc, cmd): proc.stdin.write(f"{cmd}\n".encode("utf8")) proc.stdin.flush() if((line:=proc.stdout.readline())!=b"OK\n"): raise ValueError(f"fail \"{cmd}\": {line}") def pwdq(pwd): q = zxcvbn(pwd.decode('utf8')) q['guesses'] q['score'] q['crack_times_display'] q['feedback'] proc=subprocess.Popen([pinentry, '-g'], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) if not (resp:=proc.stdout.readline()).startswith(b'OK Pleased to meet you'): raise ValueError(f"strange greeting \"{resp}\"") fetchOK(proc ,"SETTITLE Password Quality Check") fetchOK(proc ,"SETOK use this") fetchOK(proc ,"SETCANCEL try another") fetchOK(proc ,"SETDESC your %s%s (%s/4) master password:%%0a - can be online recovered in %s,%%0a - offline in %s,%%0a - trying ~%s guesses%%0a%%0aAre you sure you want to use this password?" % ("★" * q['score'], "☆" * (4-q['score']), q['score'], q['crack_times_display']['online_throttling_100_per_hour'], q['crack_times_display']['offline_slow_hashing_1e4_per_second'], q['guesses'])) try: fetchOK(proc ,"CONFIRM") except ValueError: return False return True # Send message using Native messaging protocol def send_message(data): msg = json.dumps(data).encode('utf-8') if log: log.write(msg) log.write(b'\n') log.flush() length = struct.pack('@I', len(msg)) sys.stdout.buffer.write(length) sys.stdout.buffer.write(msg) sys.stdout.buffer.flush() def users(data): def callback(users): res = {'names': [i for i in users.split("\n")], 'cmd': 'list', "mode": data['mode'], 'site': data['site']} send_message({ 'results': res }) try: handler(callback, sphinx.users, data['site']) except: send_message({ 'results': 'fail' }) def get(data): def callback(arg): res = { 'password': arg, 'name': data['name'], 'site': data['site'], 'cmd': 'login', "mode": data['mode']} send_message({ 'results': res }) try: pwd=getpwd("get password for user \"%s\" at host \"%s\"" % (data['name'], data['site'])) handler(callback, sphinx.get, pwd, data['name'], data['site']) except: send_message({ 'results': 'fail' }) def create(data): def callback(arg): res = { 'password': arg, 'name': data['name'], 'site': data['site'], 'cmd': 'create', "mode": data['mode']} send_message({ 'results': res }) try: pwd=None while not pwd: pwd=getpwd("create password for user \"%s\" at host \"%s\"%%0a" % (data['name'], data['site'])) pwd2=getpwd("REPEAT: create for user \"%s\" at host \"%s\"%%0a" % (data['name'], data['site'])) if pwd != pwd2: send_message({ 'results': 'fail' }) return if not pwdq(pwd): pwd=None symbols = '' if 's' in data['rules']: symbols = bin2pass.symbols data['rules'] = ''.join(set(data['rules']) - set(['s'])) handler(callback, sphinx.create, pwd, data['name'], data['site'], data['rules'], symbols, int(data['size']), None) except: send_message({ 'results': 'fail' }) def change(data): def callback(arg): res = { 'password': arg, 'name': data['name'], 'site': data['site'], 'cmd': 'change', "mode": data['mode']} send_message({ 'results': res }) try: oldpwd="" if cfg['client'].get('rwd_keys'): oldpwd=getpwd("current password for \"%s\" at host: \"%s\"%%0a" % (data['name'], data['site'])) pwd=None while not pwd: pwd=getpwd("new password for user \"%s\" at host \"%s\"%%0a" % (data['name'], data['site'])) pwd2=getpwd("REPEAT: new for user \"%s\" at host \"%s\"%%0a" % (data['name'], data['site'])) if pwd != pwd2: send_message({ 'results': 'fail' }) return if not pwdq(pwd): pwd=None symbols = '' if 's' in data['rules']: symbols = bin2pass.symbols data['rules'] = ''.join(set(data['rules']) - set(['s'])) handler(callback, sphinx.change, oldpwd, pwd, data['name'], data['site'], data['rules'], symbols, int(data['size']), None) except: send_message({ 'results': 'fail' }) def commit(data): def callback(arg): res = { 'result': arg, 'name': data['name'], 'site': data['site'], 'cmd': 'commit', "mode": data['mode']} send_message({ 'results': res }) try: pwd="" if cfg['client'].get('rwd_keys'): pwd=getpwd("commit password for \"%s\" at host: \"%s\"%%0a" % (data['name'], data['site'])) handler(callback, sphinx.commit, pwd, data['name'], data['site']) except: send_message({ 'results': 'fail' }) def undo(data): def callback(arg): res = { 'result': arg, 'name': data['name'], 'site': data['site'], 'cmd': 'undo', "mode": data['mode']} send_message({ 'results': res }) try: pwd="" if cfg['client'].get('rwd_keys'): pwd=getpwd("undo password for \"%s\" at host: \"%s\"%%0a" % (data['name'], data['site'])) handler(callback, sphinx.undo, pwd, data['name'], data['site']) except: send_message({ 'results': 'fail' }) def qrcode(data): try: sphinx.qrcode("svg", True) res = { 'result': arg, 'cmd': 'qrcode', "mode": data['mode']} send_message({ 'results': res }) except: send_message({ 'results': 'fail' }) def echo(data): send_message(data) def webauthn_create(data): try: pwd=None while not pwd: pwd=getpwd("create password for user \"%s\" at host \"%s\"%%0a" % (data['name'], data['site'])) pwd2=getpwd("REPEAT: create for user \"%s\" at host \"%s\"%%0a" % (data['name'], data['site'])) if pwd != pwd2: send_message({ 'results': 'fail', 'id': data['id'], 'tabId': data['tabId'], 'cmd': res['cmd']}) return if not pwdq(pwd): pwd=None # TODO use webauthn:// instead of raw:// - don't forget to rewrite it in handle() rand_bytes = pysodium.randombytes(32) pk, sk = pysodium.crypto_sign_seed_keypair(rand_bytes) # signed_challenge = pysodium.crypto_sign(data['challenge'], sk) auth_data = pysodium.crypto_hash_sha256(data['site'].encode('utf8')) + ( # rpIdHash b'\x4d' + # flags https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API/Authenticator_data b'\x00' * 4 + # signCount b'\x00' * 16 + # attestedCredentialData->AAGUID struct.pack('>H', len(pk)) + # attestedCredentialData->pk length pk + # attestedCredentialData->credentialId (pk) cbor2.dumps({ # cose encoded public key https://datatracker.ietf.org/doc/html/rfc8152#section-13 1: 1, # key type => okp 3: -8, # algorithm => Ed25519 (-8) -1: 6, # curve => ed25519 -2: pk, # x => pubkey # no y required (y is -3) })) # attestedCredentialData->credentialPublicKey # TODO use opaque with open(webauthn_data_dir + "/" + pk.hex(), "wb") as wf: wf.write(urlsafe_b64decode(data['userid']+"==")) att_sig = pysodium.crypto_sign_detached(auth_data + pysodium.crypto_hash_sha256(data['clientDataJSON'].encode('utf-8')), sk) attestation = cbor2.dumps({ 'fmt': 'packed', 'attStmt': { 'alg': -8, 'sig': att_sig, }, 'authData': auth_data }) #log.write((data['clientDataJSON']+"\n").encode('utf-8')) #log.write((auth_data.hex() + "\n").encode('utf-8')) res = { 'pk': b2a_base64(pk).decode('utf8').strip(), 'attestationObject': b2a_base64(attestation).decode('utf-8').strip(), 'authData': b2a_base64(auth_data).decode('utf-8').strip(), 'name': data['name'], 'site': data['site'], 'cmd': 'webauthn-create', 'id': data['id'], 'tabId': data['tabId'] } # create new user with pk m = Multiplexer(sphinx.servers) m.connect() # TODO add optional argument to create() to skip extending the userlist orig_userlist = sphinx.userlist sphinx.userlist = False sphinx.create(m, pwd, 'raw://'+pk.hex(), data['site'], '', '', target = rand_bytes) sphinx.userlist = orig_userlist m.close() clearmem(sk) clearmem(rand_bytes) send_message({'results': res}) except Exception as e: send_message({ 'results': 'fail', 'id': data.get('id', ''), 'tabId': data.get('tabId', -1), 'cmd': 'webauthn-create'}) #send_message({ 'results': 'fail', 'id': data.get('id', ''), 'tabId': data.get('tabId', -1), 'cmd': 'webauthn-create', 'exception': str(e)}) def webauthn_get(data): def callback(rand_bytes): pk, sk = pysodium.crypto_sign_seed_keypair(rand_bytes) clearmem(rand_bytes) # TODO use opaque with open(webauthn_data_dir + "/" + pk.hex(), "rb") as wf: userid = wf.read() auth_data = pysodium.crypto_hash_sha256(data['site'].encode('utf8')) + ( # rpIdHash b'\x4d' + # flags https://developer.mozilla.org/en-US/docs/Web/API/Web_Authentication_API/Authenticator_data b'\x00' * 4 + # signCount b'\x00' * 16 + # attestedCredentialData->AAGUID struct.pack('>H', len(pk)) + # attestedCredentialData->pk length pk + # attestedCredentialData->credentialId (pk) cbor2.dumps({ # cose encoded public key https://datatracker.ietf.org/doc/html/rfc8152#section-13 1: 1, # key type => okp 3: -8, # algorithm => Ed25519 (-8) -1: 6, # curve => ed25519 -2: pk, # x => pubkey # no y required (y is -3) })) # attestedCredentialData->credentialPublicKey sig = pysodium.crypto_sign_detached(auth_data + pysodium.crypto_hash_sha256(data['clientDataJSON'].encode('utf-8')), sk) clearmem(sk) res = { 'userid': b2a_base64(userid).decode('utf-8').strip(), 'sig': b2a_base64(sig).decode('utf8').strip(), 'authData': b2a_base64(auth_data).decode('utf-8').strip(), 'site': data['site'], 'cmd': 'webauthn-get', 'id': data['id'], 'tabId': data['tabId'], 'pk': b2a_base64(pk).decode('utf-8').strip(), } send_message({'results': res}) try: pwd=getpwd("get webauthn password at host \"%s\"" % data['site']) pk = urlsafe_b64decode(data['pk']+"==") handler(callback, sphinx.get, pwd, 'raw://'+pk.hex(), data['site']) except Exception as e: send_message({ 'results': 'fail', 'id': data.get('id', ''), 'tabId': data.get('tabId', -1), 'cmd': 'webauthn-get'}) #send_message({ 'results': 'fail', 'id': data.get('id', ''), 'tabId': data.get('tabId', -1), 'cmd': 'webauthn-get', 'exception': str(e)}) func_map = { 'login': get, 'list': users, 'create': create, 'change': change, 'commit': commit, 'undo': undo, 'qrcode': qrcode, 'echo': echo, 'webauthn-create': webauthn_create, 'webauthn-get': webauthn_get, } def main(): global log if log: log = open(log,'ab') while True: # Read message using Native messaging protocol length_bytes = sys.stdin.buffer.read(4) if len(length_bytes) == 0: return length = struct.unpack('i', length_bytes)[0] data = json.loads(sys.stdin.buffer.read(length).decode('utf-8')) if log: log.write(repr(data).encode()) log.write(b'\n') log.flush() if data['cmd'] in func_map: func_map[data['cmd']](data) else: send_message({ 'results': 'fail' }) if __name__ == '__main__': main() pwdsphinx-2.0.0-rc5/setup.py000077500000000000000000000042731474501166400157570ustar00rootroot00000000000000#!/usr/bin/env python # SPDX-FileCopyrightText: 2018, Marsiske Stefan # SPDX-License-Identifier: GPL-3.0-or-later import os #from distutils.core import setup, Extension from setuptools import setup # Utility function to read the README file. # Used for the long_description. It's nice, because now 1) we have a top level # README file and 2) it's easier to type in the README file than to put a raw # string in below ... def read(fname): return open(os.path.join(os.path.dirname(__file__), fname)).read() from setuptools.command.sdist import sdist as SetuptoolsSdist class BuildMakefilesSdist(SetuptoolsSdist): def run(self): os.chdir('man') os.system('make') os.chdir('..') SetuptoolsSdist.run(self) from setuptools.command.build import build as SetuptoolsBuild class BuildMakefilesBuild(SetuptoolsBuild): def run(self): os.chdir('man') os.system('make') os.chdir('..') SetuptoolsBuild.run(self) setup(name = 'pwdsphinx', version = '2.0.0-rc5', description = 'SPHINX password protocol', license = "GPLv3", author = 'Stefan Marsiske', author_email = 'sphinx@ctrlc.hu', url = 'https://github.com/stef/pwdsphinx', long_description=read('README.md'), long_description_content_type="text/markdown", packages = ['pwdsphinx', 'pwdsphinx.converters'], install_requires = ("pysodium", "SecureString", "qrcodegen","zxcvbn-python", 'pyequihash', 'pyoprf >= 0.6.0'), classifiers = ["Development Status :: 4 - Beta", "License :: OSI Approved :: GNU General Public License v3 or later (GPLv3+)", "Topic :: Security :: Cryptography", "Topic :: Security", ], entry_points = { 'console_scripts': [ 'oracle = pwdsphinx.oracle:main', 'sphinx = pwdsphinx.sphinx:main', 'websphinx = pwdsphinx.websphinx:main', 'bin2pass = pwdsphinx.bin2pass:main', ], }, cmdclass={'sdist': BuildMakefilesSdist, 'build': BuildMakefilesBuild}, #ext_modules = [libsphinx], ) pwdsphinx-2.0.0-rc5/sphinx.cfg_sample000066400000000000000000000103021474501166400175630ustar00rootroot00000000000000# the client section is only needed if you use the client functionality [client] # whether to produce some output on the console #verbose = False # the directory where the client stores its master secret - you might want to # back this up #datadir = ~/.config/sphinx # master password optional for authentication, if it is False it protects # against offline master pwd bruteforce attacks. The drawback is that for known # (host,username) tuples the seeds/blobs can be changed/deleted by an attacker # if the client masterkey is known #rwd_keys=False # stores a check digit of 5 bits in the rule blob, this helps to notice most # typos of the master password, while decreasing security slightly #validate_password=True # userlist enables the maintenance of an encrypted blob of all records # belonging to the same sphinx user (defined by their masterkey) and # hostname. This enables the usage of the `list` command to the client. # if you disable this, you have to remember your usernames in other ways. #userlist=True # if you have still v1 passwords on the server, they get automatically upgraded # to v2 records. If you don't have any clients that can only do v1, then it is # safe and nice to delete the old v1 passwords automatically. If you use for # example androsphinx android client, it only supports v1, so you don't want to # delete the v1 records. Default is false. # delete_upgraded = false # the threshold - must specify at least this many servers in the # [servers] section # threshold = 3 # if you still need to consult a v1 server # address = "127.0.0.1" # port = 2355 # the servers used by the client [servers] # you need at least one server. the name is freely chosen (in this case it is # "first", but should not change, unless you want to lose access to your # existing passwords. [servers.first] # the ip address of the server address="127.0.0.1" # the port where the server is running, 443 is nice to punch through firewalls. port=443 # the long term signature key of the server. ltsigkey="32byteBase64EncodedValue==" # or alternatively if you want to store the raw binary public key in a file # ltsigkey_path = "path/to/ltsigkey.pub" # in case you want to use a threshold version of SPHINX you need at least 3 # servers (and the threshold is then 2) #[servers.2nd] #address="127.0.0.1" #port=2355 #ltsigkey="2nd.pub" # #[servers.3rd] #address="127.0.0.1" #port=5523 #ltsigkey="3rd.pub" # the server section is only needed if you run the oracle yourself. [server] # the ipv4 address the server is listening on #address="127.0.0.1" # the port on which the server is listening, use 443 if available, so that # the oracle can be accessed from behind tight firewalls #port=2355 # ssl key - no default must be specified ssl_key="key.pem" # ssl cert - no default must be specified ssl_cert="cert.pem" # tcp connection timeouts, increase in case you have bad networks, with the # caveat that this might lead to easier resource exhaustion - blocking all # workers. #timeout=3 # how many worker processes can run in parallel # max_kids=5 # the root directory where all data is stored #datadir= "/var/lib/sphinx" # whether to produce some output on the console #verbose=false # decay ratelimit after rl_decay seconds #rl_decay= 1800 # increase hardness after rl_threshold attempts if not decaying #rl_threshold= 1 # when checking freshness of puzzle solution, allow this extra # gracetime in addition to the hardness max solution time #rl_gracetime=10 # a path pointing at a long-term signing key. If this file doesn't exist, # you can generate it by running `oracle init`, it will also generate a public # key, which all your clients need to put in their ltsigkey configuration # variable. ltsigkey="ltsig.key" # the websphinx section is only needed if you use the browser webextensions [websphinx] # the path of your pinentry program pinentry=/usr/bin/pinentry # a file where websphinx logs, this is only for dev/debug purposes log= # in case you use webauthn, we need to store mappings between webauthn user ids # and webauthn public keys. it's lame, but no way around it. back up this # directory and sync it to other hosts where you want to use the webextension # with the same webauthn accounts. webauthn_data_dir = "path/to/webauthn/data/dir" pwdsphinx-2.0.0-rc5/tests/000077500000000000000000000000001474501166400153765ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/tests/__init__.py000066400000000000000000000000011474501166400174760ustar00rootroot00000000000000 pwdsphinx-2.0.0-rc5/tests/cert.pem000066400000000000000000000011131474501166400170320ustar00rootroot00000000000000-----BEGIN CERTIFICATE----- MIIBhTCCASugAwIBAgIURt1h20rXWGwyV5nuLDp2NBaXsgkwCgYIKoZIzj0EAwIw GDEWMBQGA1UEAwwNc3BoaW54IG9yYWNsZTAeFw0yMDA5MjkyMTI5MDBaFw0yMTA5 MjQyMTI5MDBaMBgxFjAUBgNVBAMMDXNwaGlueCBvcmFjbGUwWTATBgcqhkjOPQIB BggqhkjOPQMBBwNCAATPl01K0Nuxm4wZaYzS4AvaXy4pIG96Zk5XC1o0TmkdnNPb kgSUm6dx1OVvx3u8kVGRHYfgC7C4I414W2v41Hb4o1MwUTAdBgNVHQ4EFgQUtpha TRgMR7SeM7gYPKoq8L874tcwHwYDVR0jBBgwFoAUtphaTRgMR7SeM7gYPKoq8L87 4tcwDwYDVR0TAQH/BAUwAwEB/zAKBggqhkjOPQQDAgNIADBFAiEAnN1Y9WDfVW6f slgOnPs8eQdyoqA7S/rFf9wE/ZxR4tECICfCYMKpIRMYPEk2C+kqoJueB/JVdGKh pYxdMvjx8bsj -----END CERTIFICATE----- pwdsphinx-2.0.0-rc5/tests/data/000077500000000000000000000000001474501166400163075ustar00rootroot00000000000000pwdsphinx-2.0.0-rc5/tests/data/masterkey000066400000000000000000000000401474501166400202300ustar00rootroot00000000000000Zg< hqQJ-pwdsphinx-2.0.0-rc5/tests/editor.py000077500000000000000000000002611474501166400172400ustar00rootroot00000000000000#!/usr/bin/env python import sys with open(sys.argv[1], 'r') as fd: data = fd.read() with open(sys.argv[1], 'w') as fd: fd.write('\n'.join(sorted(data.split('\n')))) pwdsphinx-2.0.0-rc5/tests/key.pem000066400000000000000000000003431474501166400166710ustar00rootroot00000000000000-----BEGIN EC PRIVATE KEY----- MHcCAQEEIBvDA1MfRSB+jbflO/Db0XkbHWoxHceapqqwdww/nXiHoAoGCCqGSM49 AwEHoUQDQgAEz5dNStDbsZuMGWmM0uAL2l8uKSBvemZOVwtaNE5pHZzT25IElJun cdTlb8d7vJFRkR2H4AuwuCONeFtr+NR2+A== -----END EC PRIVATE KEY----- pwdsphinx-2.0.0-rc5/tests/opaque-store.cfg000066400000000000000000000033701474501166400205060ustar00rootroot00000000000000[client] # you must change this value, it ensures that your record ids are # unique you must also make sure to not lose this value, if you do, # you lose access to your records. id_salt="Please_MUST-be_changed! and backed up to something difficult to guess" # the number of servers successfully participating in an # operation. must be less than 129, but lower 1 digit number are # probable the most robust. threshold=2 # the time in seconds a distributed keygen (DKG) protocol message is # considered fresh. anything older than this is considered invalid and # aborts a DKG. Higher values help with laggy links, lower values can # be fine if you have high-speed connections to all servers. ts_epsilon=1200 # the list of servers, must be 1 item, if threshold is 1, or one more # than threshold. [servers] [servers.zero] # address of server host="127.0.0.1" # port where server is running port=23000 # self-signed public key of the server # - not needed for proper Lets Encrypt certs #ssl_cert = "../../../opaque-store/.arch/test-2of3-setup/0/cert.pem" #ltsigkey="../../../opaque-store/.arch/test-2of3-setup/zero.pub" ssl_cert = "cert.pem" ltsigkey = "data/os_zero.pub" [servers.eins] # address of server host="127.0.0.1" # port where server is running port=23001 # public key of the server #ssl_cert = "../../../opaque-store/.arch/test-2of3-setup/1/cert.pem" #ltsigkey="../../../opaque-store/.arch/test-2of3-setup/eins.pub" ssl_cert = "cert.pem" ltsigkey = "data/os_one.pub" [servers.zwei] # address of server host="127.0.0.1" # port where server is running port=23002 # public key of the server #ssl_cert = "../../../opaque-store/.arch/test-2of3-setup/2/cert.pem" #ltsigkey="../../../opaque-store/.arch/test-2of3-setup/zwei.pub" ssl_cert = "cert.pem" ltsigkey = "data/os_two.pub" pwdsphinx-2.0.0-rc5/tests/sphinx.cfg000066400000000000000000000016661474501166400174010ustar00rootroot00000000000000[client] verbose = false datadir = "data/" timeout = 30 rwd_keys = true threshold = 2 validate_password = false # v1 server address="localhost" port=10000 ssl_cert = "cert.pem" delete_upgraded=true [servers] [servers.zero] host="localhost" port=10000 ssl_cert = "cert.pem" ltsigkey_path = "data/zero.pub" #ssl_cert = "servers/0/cert.pem" #ltsigkey = "servers/0/ltsig.key.pub" [servers.one] host="localhost" port=10001 ssl_cert = "cert.pem" ltsigkey_path = "data/one.pub" #ssl_cert = "servers/1/cert.pem" #ltsigkey = "servers/0/ltsig.key.pub" [servers.two] host="localhost" port=10002 ssl_cert = "cert.pem" ltsigkey_path = "data/two.pub" #ssl_cert = "servers/2/cert.pem" #ltsigkey = "servers/0/ltsig.key.pub" #[servers.drei] #host="localhost" #port=10003 #ssl_cert = "cert.pem" #ltsigkey = "data/drei.pub" # #[servers.eris] #host="localhost" #port=10004 #ssl_cert = "cert.pem" #ltsigkey = "data/eris.pub" [websphinx] pinentry="/usr/bin/pinentry" pwdsphinx-2.0.0-rc5/tests/start-servers.sh000077500000000000000000000010551474501166400205620ustar00rootroot00000000000000#!/bin/sh cleanup() { echo killing oracles $server1 $server2 $server3 $server4 $server5 kill $server1 $server2 $server3 $server4 $server5 exit } cd servers/0; ../../../pwdsphinx/oracle.py & server1=$! sleep 0.1 cd ../../servers/1; ../../../pwdsphinx/oracle.py & server2=$! sleep 0.1 cd ../../servers/2; ../../../pwdsphinx/oracle.py & server3=$! sleep 0.1 cd ../../servers/3; ../../../pwdsphinx/oracle.py & server4=$! sleep 0.1 cd ../../servers/4; ../../../pwdsphinx/oracle.py & server5=$! sleep 0.1 trap "cleanup" INT while true; do sleep 1 ;done pwdsphinx-2.0.0-rc5/tests/test.py000066400000000000000000001052561474501166400167400ustar00rootroot00000000000000import unittest from os import listdir, makedirs, environ, path from shutil import rmtree, copyfile from tempfile import mkdtemp from unittest.mock import Mock from io import BytesIO, StringIO import sys, pysodium, subprocess, time, struct import tracemalloc from pyoprf import multiplexer from pwdsphinx import sphinx, bin2pass, ostore, v1sphinx from binascii import b2a_base64, a2b_base64 import pyoprf, ctypes import contextlib #don't run with -b if you want log output from setup/teardown fns #import logging #logger = logging.getLogger(__name__) # to get coverage, run # PYTHONPATH=.. coverage run ../tests/test.py # coverage report -m # to just run the tests do # python3 -m unittest discover --start-directory ../tests # disable the output of sphinx sphinx.print = Mock() N = 3 data_dir = 'data/' char_classes = 'uld' syms = bin2pass.symbols size = 0 pwd = 'asdf' user = 'user1' user2 = 'user2' host = 'example.com' servers = {'zero': {'host': 'localhost', 'port': 10000, 'ssl_cert': 'cert.pem'}, 'one': {'host': 'localhost', 'port': 10001, 'ssl_cert': 'cert.pem'}, 'two': {'host': 'localhost', 'port': 10002, 'ssl_cert': 'cert.pem'}, 'drei': {'host': 'localhost', 'port': 10003, 'ssl_cert': 'cert.pem'}, 'eris': {'host': 'localhost', 'port': 10004, 'ssl_cert': 'cert.pem'} } corrupt_dkg_lib = environ.get('CORRUPT_DKG_LIB') ostore_server = environ.get('OPAQUESTORE_SERVER') orig_servers=sphinx.servers max_recovery_tokens = 2 ostore_max_fails = 3 class Input: def __init__(self, txt = None, pwd = pwd): if txt: self.buffer = BytesIO('\n'.join((pwd, txt)).encode()) else: self.buffer = BytesIO(pwd.encode()) def isatty(self): return False def close(self): return def connect(peers=None): if peers == None: peers = dict(tuple(servers.items())[:N]) m = multiplexer.Multiplexer(peers) m.connect() return m def bad_signkey(_, __): pk, sk = pysodium.crypto_sign_seed_keypair(b'\xfe'*pysodium.crypto_sign_SEEDBYTES) return sk, pk get_signkey = sphinx.get_signkey class TestEndToEnd(unittest.TestCase): @classmethod def setUpClass(cls): #libc = ctypes.cdll.LoadLibrary('libc.so.6') #cstderr = ctypes.c_void_p.in_dll(libc, 'stderr') #log_file = ctypes.c_void_p.in_dll(pyoprf.liboprf,'log_file') #log_file.value = cstderr.value cls._validate_password = sphinx.validate_password cls._root = mkdtemp(prefix='sphinx-oracle-root.') root = cls._root pks = [] for idx, k in enumerate(servers.keys()): makedirs(f"{root}/servers/{idx}") copyfile("cert.pem", f"{root}/servers/{idx}/cert.pem") copyfile("key.pem", f"{root}/servers/{idx}/key.pem") pk, sk = pysodium.crypto_sign_keypair() with open(f"{root}/servers/{idx}/ltsig.key", 'wb') as fd: fd.write(sk) servers[k]['ltsigkey']=pk if k in sphinx.servers: sphinx.servers[k]['ltsigkey']=pk # for reproducability, in case we want to run manual sphinx ops with open(f"data/{k}.pub",'wb') as fd: fd.write(pk) with open(f"{root}/servers/{idx}/sphinx.cfg", 'w') as fd: fd.write(f'[server]\n' f'verbose = true\n' f'address = "127.0.0.1"\n' f'port={10000+idx}\n' f'timeout = 30\n' f'max_kids = 5\n' f'ssl_key= "key.pem"\n' f'ssl_cert= "cert.pem"\n' f'ltsigkey = "ltsig.key"\n' f'datadir = "data"\n' f'rl_decay=1800\n' f'rl_threshold=10\n') cls._oracles = [] env = environ for idx in range(len(servers)): log = open(f"{root}/servers/{idx}/log", "w") if idx == N and corrupt_dkg_lib is not None: print(f"enabling byzantine peers {corrupt_dkg_lib}", file=log) env["BYZANTINE_DKG"]=corrupt_dkg_lib cls._oracles.append( (subprocess.Popen(["python3", path.dirname(path.abspath(sphinx.__file__)) + "/oracle.py"], cwd = f"{root}/servers/{idx}/", stdout=log, stderr=log, pass_fds=[log.fileno()], env=env), log)) log.close() if corrupt_dkg_lib is not None: del env["BYZANTINE_DKG"] if ostore.available and ostore_server is not None and path.isfile(ostore_server): cls._ostore_root = mkdtemp(prefix='opaquestore-server-root.') root = cls._ostore_root pks = [] for idx in range(len(servers)): makedirs(f"{root}/servers/{idx}") copyfile("cert.pem", f"{root}/servers/{idx}/cert.pem") copyfile("key.pem", f"{root}/servers/{idx}/key.pem") pk, sk = pysodium.crypto_sign_keypair() with open(f"{root}/servers/{idx}/ltsig.key", 'wb') as fd: fd.write(sk) #pks.append(b2a_base64(pk).decode("utf8")[:-1]) pks.append(pk) with open(f"{root}/servers/{idx}/opaque-stored.cfg", 'w') as fd: fd.write(f'[server]\n' f'verbose = true\n' f'address = "127.0.0.1"\n' f'port={23000+idx}\n' f'timeout = 30\n' f'max_kids = 5\n' f'ssl_key= "key.pem"\n' f'ssl_cert= "cert.pem"\n' f'ltsigkey = "ltsig.key"\n' f'record_salt = "some random string to salt the record ids"\n' f'max_blob_size = 8192\n' f'max_recovery_tokens = {max_recovery_tokens}\n' f'max_fails = {ostore_max_fails}\n' f'datadir = "data"\n\n') # lt sig pubkeys for idx in range(len(servers)): for pk, name in zip(pks, servers.keys()): with open(f"data/os_{name}.pub",'wb') as fd: fd.write(pk) for idx in range(len(servers)): log = open(f"{root}/servers/{idx}/log", "w") cls._oracles.append( (subprocess.Popen([ostore_server], cwd = f"{root}/servers/{idx}/", stdout=log, stderr=log, pass_fds=[log.fileno()]), log)) log.close() time.sleep(0.8) @classmethod def tearDownClass(cls): for p, log in cls._oracles: p.kill() r = p.wait() log.close() #rmtree(cls._root) time.sleep(0.4) def tearDown(self): sphinx.validate_password=self._validate_password time.sleep(0.1) sphinx.servers = orig_servers #cleanup() roots = [self._root] if hasattr(self, '_ostore_root'): roots.append(self._ostore_root) for idx in range(len(servers)): for root in roots: ddir = f"{root}/servers/{idx}/data/" if not path.exists(ddir): continue for f in listdir(ddir): if f == 'key': continue rmtree(ddir+f) def test_create_user(self): with connect() as s: self.assertIsInstance(sphinx.create(s, pwd, user, host, char_classes, syms, size), str) def test_huge_user(self): if sphinx.userlist == False: return with connect() as s: self.assertRaises(ValueError, sphinx.create,s, pwd, 'a'*(2**16 - 40), host, char_classes, syms, size) with connect() as s: rwd=sphinx.create(s, pwd, 'a'*(2**16 - 42), host, char_classes, syms, size) self.assertIsInstance(rwd, str) with connect() as s: self.assertRaises(ValueError, sphinx.create, s, pwd, 'a', host, char_classes, syms, size) def test_rules_u(self): with connect() as s: rwd = sphinx.create(s, pwd, user, host, "u", '', 0) self.assertIsInstance(rwd, str) self.assertTrue(rwd.isupper()) def test_rules_l(self): with connect() as s: rwd = sphinx.create(s, pwd, user, host, "l", '', 0) self.assertIsInstance(rwd, str) self.assertTrue(rwd.islower()) def test_rules_d(self): with connect() as s: rwd = sphinx.create(s, pwd, user, host, "d", '', 0) self.assertIsInstance(rwd, str) self.assertTrue(rwd.isdigit()) def test_rules_ulsd(self): with connect() as s: rwd = sphinx.create(s, pwd, user, host, char_classes, syms, 0) self.assertIsInstance(rwd, str) self.assertTrue(len(set([x.decode('utf8') for x in bin2pass.sets['u']]).intersection(rwd)) > 0) self.assertTrue(len(set([x.decode('utf8') for x in bin2pass.sets['l']]).intersection(rwd)) > 0) self.assertTrue(len(set([x.decode('utf8') for x in bin2pass.sets['d']]).intersection(rwd)) > 0) self.assertTrue(len(set(bin2pass.symbols).intersection(rwd)) > 0) def test_pwd_len(self): for i in range(1,32): with connect() as s: rwd = sphinx.create(s, pwd, user, host, char_classes, syms, i) self.assertIsInstance(rwd, str) self.assertTrue(len(rwd)==i) with connect() as s: self.assertTrue(sphinx.delete(s, pwd, user, host)) def test_invalid_rules(self): with connect() as s: self.assertRaises(ValueError, sphinx.create, s, pwd, user, host, "asdf", syms, size) def test_recreate_user(self): with connect() as s: self.assertIsInstance(sphinx.create(s, pwd, user, host, char_classes, syms, size), str) with connect() as s: self.assertRaises(ValueError, sphinx.create,s, pwd, user, host, char_classes, syms, size) s.close() def test_get_nonexistant_record(self): for i in [0, 1,2]: try: makedirs(f"{self._root}/servers/{i}/data/") except: pass with connect() as s: self.assertRaises(ValueError, sphinx.get, s, pwd, user, host) def test_get(self): with connect() as s: rwd0 = sphinx.create(s, pwd, user, host, char_classes, syms, size) self.assertIsInstance(rwd0, str) with connect() as s: rwd = sphinx.get(s, pwd, user, host) self.assertIsInstance(rwd, str) self.assertEqual(rwd,rwd0) def test_v1get(self): if not v1sphinx.enabled: return # synthetically create a v1 record id = v1sphinx.getid(host,user) for i in [1,2]: try: makedirs(f"{self._root}/servers/{i}/data/") except: pass ddir = f"{self._root}/servers/0/data/{id.hex()}" k = b'\x55' * 32 #calculate rwd h0 = pysodium.crypto_generichash(pwd.encode(), outlen=pysodium.crypto_core_ristretto255_HASHBYTES); H0 = pysodium.crypto_core_ristretto255_from_hash(h0) H0_k = pysodium.crypto_scalarmult_ristretto255(k, H0) rwd0 = pysodium.crypto_generichash(pwd.encode()+H0_k, outlen=pysodium.crypto_core_ristretto255_BYTES); rwd0 = pysodium.crypto_pwhash(pysodium.crypto_core_ristretto255_BYTES, rwd0, id[:pysodium.crypto_pwhash_SALTBYTES], pysodium.crypto_pwhash_OPSLIMIT_INTERACTIVE, pysodium.crypto_pwhash_MEMLIMIT_INTERACTIVE) # create a rules blob if sphinx.validate_password: check_digit = pysodium.crypto_generichash(v1sphinx.CHECK_CTX, rwd0, 1)[0] else: check_digit = 0 xor_mask = b'\x55' * 32 packed = 30 packed = packed + (sum(1< () (1,) (2,) (3,) (1,2) (1,3) (2,3) (1,2,3)" s = list(iterable) return chain.from_iterable(combinations(s, r) for r in range(len(s)+1)) class TestRules(unittest.TestCase): def test_rules(self): for cls in powerset('uld'): equ(''.join(cls), bin2pass.symbols, 64, 31, b'\x00'*64) if cls!=tuple(): equ(''.join(cls), '', 64, 31, b'\x00'*64) equ('uld', bin2pass.symbols[:16], 64, 31, b'\x00'*64) equ('uld', bin2pass.symbols[16:], 64, 31, b'\x00'*64) equ('uld', bin2pass.symbols, 64, 31, b'\xff'*64) equ('uld', bin2pass.symbols, 64, 31, b'\xaa'*64) for i in range(128): equ('uld', bin2pass.symbols, i, 31, b'\xaa'*64) for i in range(32): equ('uld', bin2pass.symbols, 64, i, b'\xaa'*64) if __name__ == '__main__': unittest.main() pwdsphinx-2.0.0-rc5/tests/tests.sh000077500000000000000000000042551474501166400171050ustar00rootroot00000000000000#!/bin/bash -e hash() { md5sum | { read md5 rest; echo $md5; } } [[ -d data ]] || { echo no data directory found echo please start ../pwdsphinx/oracle.py exit 1 } echo "create user1" rwd0="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py create user1 example.com ulsd)" echo "get user1 rwd" rwd="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user1 example.com)" [[ "$rwd" == "$rwd0" ]] || false echo "change user1 rwd" rwd1="$(echo -ne 'asdf\nasdf' | ../pwdsphinx/sphinx.py change user1 example.com)" echo "get user1 rwd" rwd="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user1 example.com)" [[ "$rwd" == "$rwd0" ]] || false echo "commit user1 changed rwd" echo -n 'asdf' | ../pwdsphinx/sphinx.py commit user1 example.com rwd="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user1 example.com)" [[ "$rwd" == "$rwd1" ]] || false echo "undo user1" echo -n 'asdf' | ../pwdsphinx/sphinx.py undo user1 example.com rwd="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user1 example.com)" [[ "$rwd" == "$rwd0" ]] || false echo "commit again user1 changed rwd" echo -n 'asdf' | ../pwdsphinx/sphinx.py commit user1 example.com rwd="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user1 example.com)" [[ "$rwd" == "$rwd1" ]] || false rwd0="$rwd1" echo "commit user1 changed rwd again - fail" echo -n 'asdf' | ../pwdsphinx/sphinx.py commit user1 example.com || true echo "get user1 rwd" rwd="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user1 example.com)" [[ "$rwd" == "$rwd0" ]] || false echo "create user2 rwd" rwds0="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py create user2 example.com ulsd)" echo "get user2 rwd" rwds="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py get user2 example.com)" [[ "$rwds" == "$rwds0" ]] || false echo "list users rwd" md5="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py list example.com | hash)" [[ "$md5" == "57c246efc4d56f6210462408b5f8ef2e" ]] echo "delete user2 rwd" echo -n 'asdf' | ../pwdsphinx/sphinx.py delete user2 example.com echo "list users rwd" md5="$(echo -n 'asdf' | ../pwdsphinx/sphinx.py list example.com | hash)" [[ "$md5" == "a609316768619f154ef58db4d847b75e" ]] echo "get user2 rwd - fail" echo -n 'asdf' | ../pwdsphinx/sphinx.py get user2 example.com || true echo "all tests passed" pwdsphinx-2.0.0-rc5/tests/ws-test.py000077500000000000000000000016701474501166400173650ustar00rootroot00000000000000#!/usr/bin/env python import struct, json, sys, subprocess if sys.argv[1]=="get": msg = {'cmd': "login"} else: msg = {'cmd': sys.argv[1]} if sys.argv[1] in ('create', 'get', 'change', 'commit', 'undo', 'delete'): msg['name']= sys.argv[2] msg['site']= sys.argv[3] if sys.argv[1] in {'create', 'change'}: msg['rules']= sys.argv[4] msg['size']= sys.argv[5] if sys.argv[1] == 'list': msg['site']= sys.argv[2] msg['mode'] = 'ws-test' if sys.argv[1] == 'json': msg = sys.argv[2].replace("'", '"') else: msg = json.dumps(msg) print("cmd:", msg) cmd = struct.pack('i', len(msg))+msg.encode("utf-8") proc=subprocess.Popen(["../pwdsphinx/websphinx.py"], stdin=subprocess.PIPE, stdout=subprocess.PIPE, stderr=subprocess.PIPE) out, err = proc.communicate(input=cmd) print("ret", proc.returncode) print("stdout") for line in out.split(b'\n'): print(line) print("stderr") for line in err.split(b'\n'): print(line) pwdsphinx-2.0.0-rc5/whitepaper.org000066400000000000000000001513771474501166400171330ustar00rootroot00000000000000* The Extended Sphinx Protocol SPHINX is a beautiful protocol for password storage querying and inserting of exactly one password. However in a real-life scenario users want to store more than one password, or sometimes user want to change the password or delete it. Users might have more than one account at a site and users do not want to remember the list of user names, nor do they want to synchronize them over all of their devices. These are some things that SPHINX does not provide. Hence it is necessary to extend the original SPHINX protocol. ** Terminology *** Sphinx Records Records are data structures stored at the sphinx server which contain all the necessary information to provide a user with means to query and manage passwords. *** User User is the human attempting to manage its passwords. *** Service A service is some interface where the user wants to login. *** Account An account is a combination of a username and a password authenticating a user at a service. *** Account password An account password is the password that authenticates the user with a service. It is derived from the SPHINX key in a way that makes the output compatible with the password rules mandated by the service. *** rwd (Random word) High entropy 64 bytes derived from the SPHINX protocol by calculating: argon2i(hash(pwd||hash2curve(pwd)*k),salt), where k is a server seed contributed by the sphinx server. *** Master Password The master password is the password which is used in SPHINX to query and derive the account password for a service. Unlike other password managers it is possible with sphinx to have multiple master passwords, since they are not used to open an encrypted database but only contribute to the derivation of the rwd. *** Client Master-key A client master-key is a key shared by all devices of a user which access and manage their SPHINX records on a server. *** Core functions The two core functions that are defined by SPHINX are initialize SPHINX record and query SPHINX. *** Initialize SPHINX record This core SPHINX function creates new record at the server for later usage, this is what you want to run when registering a new users at a service. *** Query SPHINX This core SPHINX function queries the SPHINX server (oracle) which has an associated record previously setup by the other SPHINX core function Initialize SPHINX record. *** Management functions A password manager has other functions besides creating and querying them, such functions are deletion of accounts, changing of account passwords, committing a changed password, undoing a commit to the previous password, listing usernames associated with a host. ** Core Sphinx Protocol This is a simplified description of the protocol, for a full academic papers including security proofs, please see: https://eprint.iacr.org/2015/1099 "Device-Enhanced Password Protocols with Optimal Online-Offline Protection" by Stanislaw Jarecki, Hugo Krawczyk, Maliheh Shirvanian, and Nitesh Saxena. And additionally: https://eprint.iacr.org/2018/695 "SPHINX: A Password Store that Perfectly Hides Passwords from Itself" by Maliheh Shirvanian, Stanislaw Jarecki, Hugo Krawczyk, and Nitesh Saxena The underlying cryptographic primitive (the 2hashDH OPRF) has been rigorously specified by the IRTF/CFRG as RFC9497: https://datatracker.ietf.org/doc/rfc9497/ The most essential operation in the Extended Sphinx Protocol is the Sphinx query. This is the basis for all other operations in the protocol - the only exception being the READ operation. Let's recap how the SPHINX query works: 1. The user hashes their password and then blinds it using the blinding factor `r`, the resulting alpha value is passed to the server. #+BEGIN_SRC r = random(32) alpha = (r*hash(pwd)) #+END_SRC The * operation denotes scalar multiplication over an elliptic curve like curve 25519. Our concrete implementation uses ristretto255. It's also worth noting, that the hash operation here is really a hash-to-curve operation. 2. The server has a secret seed (aka key) which it contributes into the blinded hash of the users password: #+BEGIN_SRC beta = seed*alfa #+END_SRC The server returns the calculated beta value to the client. 3. The user unblinds the servers output (beta) #+BEGIN_SRC pwd_k = 1/r * beta #+END_SRC and hashes it again with the master password, which results in the rwd: #+BEGIN_SRC rwd = hash(pwd,pwd_k) #+END_SRC So far this is regular a regular generic OPRF, as specified by RFC9497 and implemented by liboprf. For a final hardening step SPHINX applies a final argon2i password hash over the rwd, using the user, host, and client master key as a secret: #+BEGIN_SRC rwd = argon2i(rwd,hash(salt_ctx,master_key) | len(user) | user | len(host) | host) #+END_SRC With this final step in our implementation `rwd` results in a high entropy array of 64 bytes. ** Threshold SPHINX protocol v2.0 of SPHINX supports a threshold variant. This further lowers the trust needed in individual SPHINX servers, and greatly improves on robustness and reliability of SPHINX. Instead of one server an attacker must compromise t+1 (threshold) servers to have access to the secret seed from the non-threshold version of SPHINX. Furthermore the threshold setup allows for much greater robustness, there is no single-point-of-failure anymore, if a server is unavailable others can take its role. The threshold variant makes backups possible. By running a number of threshold SPHINX servers by the user themselves, the shares held by those servers can be stored offline and recovered in case all the public servers are unavailable. The following is a simplified description of the protocol used for threshold-SPHINX, for a full academic paper with security proofs see https://eprint.iacr.org/2017/363 "TOPPSS: Cost-minimal Password-Protected Secret Sharing based on Threshold OPRF" by Stanislaw Jarecki, Aggelos Kiayias, Hugo Krawczyk, and Jiayu Xu Quote from the TOPPSS paper (slightly edited for text-representation): #+BEGIN_QUOTE The underlying PRF, f_k(x) = H"(x, (H'(x))^k), remains unchanged, but the key k is shared using Shamir secret-sharing across n servers, where server S_i stores the key share k_i. [...] For evaluation, given any subset SE of t+1 servers, the user U sends to each of them the same message a = (H'(x))^r for random r, exactly as in the single-server OPRF protocol 2HashDH. If each server S_i in SE returned bi = a^k_i then U could reconstruct the value a^k using standard Lagrange interpolation in the exponent, i.e. a_k = Π b_i^λ_i, i∈SE with the Lagrange coefficients λ_i computed using the indexes of servers in SE. After computing a^k, the value of f_k(x) is computed by U by deblinding a_k exactly as in the case of protocol 2HashDH. #+END_QUOTE For the distributed key-generation (DKG) for the creation and change of records operations SPHINX uses the Trusted Party DKG as provided and specified by liboprf at https://github.com/stef/liboprf/blob/master/docs/tp-dkg.txt The domain separator for create type DKG is: "threshold sphinx dkg create k", for update type DKG it is: "threshold sphinx dkg change k" DKG Cheaters MUST be identified and reported to the user. *** Keys and Beta values To be able to calculate the correct Lagrange coefficients in the threshold setup the client needs to know the index of the beta values. The servers have to store their index in a threshold setup next to the key-share they hold. Thus the key is stored in the following format: #+BEGIN_EXAMPLE +--------+------------+ | 1 byte | 32 bytes | +--------+------------+ | index | key | +--------+------------+ #+END_EXAMPLE Similarly the beta value that is the response sent back to the client, based on the key needs to include this index, and thus has the same format as the key: 1 byte for the index, 32 bytes for the beta value. For keys and beta values used in a non-threshold setting, this value SHOULD be 1. Valid values for the index are between 1..128 inclusive, anything else is invalid, and MUST be rejected by the client and/or server. *** Unlinkable records In the threshold variant the client interacts with multiple servers, and thus the protocol needs to store all relevant information (password rules and authentication keys) on all of them. It is a desirable security property to have all related records on all the servers to be unlinkable. Just like all the records belonging to the same user are unlinkable (if the userlist feature is disabled) in the non-threshold variant, having the records belonging to the same account on the threshold servers provides an extra cost multiplier for any attacker having access to multiple leaked threshold SPHINX databases. Since all the records are unlinkable, an attacker must be test all possible combinations of records if they want to reconstruct any secret SPHINX key. And even if they are able to do so, all they managed is to reduce the security of the threshold variant to the security of the non-threshold variant in this case. Unlinkable records thus create another obstacle for attackers that is essentially a combinatorial explosion. Besides the shares that are stored on the servers, the servers also store the public authentication key for management operations. This key is unique for all servers and records, this is achieved by including servers name in the record ID (see below for details), as all servers have different names so will all record IDs be different. The other data that all servers need to store are the password rules. These are encrypted, all with the same key, but with MUST use different nonces, and thus should also be unlinkable. *** Threshold Management Operations Management operations (change, delete, commit, undo) MUST operate on all shares, otherwise they become desynchronized and lead to inconsistencies and failure to recover passwords. * The Extended Sphinx Protocol Details In the following sections we specify our extensions we added to the core Sphinx Protocol and why we did so. ** Password rules The output of the core sphinx protocol (at least in our instantiation) is an array of 64 random bytes. Most services are not expecting binary data (although they should!) and the worse ones even have some rules of what kind of character classes to expect or forbid, or how long the password should be. In order to store these per-service password rules without having to sync this across different devices used by a user we store these per-service password rules on the sphinx server. We extended the core Sphinx Protocol by having the server send along the password rules together with the beta value at the end of step two of the core sphinx protocol - so that the client can derive the correct password. Rules are compacted in the following way: #+BEGIN_EXAMPLE |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | a | b | c | d | e | f | |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | password size | U | L | D |' '| ! | " | # | $ | % | |---------------------------+---+---+---+---+-------------------| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |10 |11 |12 |13 |14 |15 |16 |17 |18 |19 |1a |1b |1c |1d |1e |1f | |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | & | ' | ( | ) | * | + | , | - | . | / | : | ; | < | = | > | ? | |---------------------------+---+---+---+---+-------------------| |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| |20 |21 |22 |23 |24 |25 |26 |27 |28 |29 |2a |2b |2c |2d |2e |2f | |---+---+---+---+---+---+---+---+---+---+---+---+---+---+---+---| | @ | [ | \ | ] | ^ | _ | ` | { | | | } | ~ | check-digit | |---------------------------+---+---+---+---+-------------------| and a 64 byte long xor mask. #+END_EXAMPLE The longest password we can derive out of 64 bytes, is 155 chars long if only digits are allowed, but maximum 109 for only lower-case or upper-case letters only, and max 86 chars for all alphanumerical characters. Thus 7 bits are enough to encode the size of a password, if you really need to store an all-numeric password that is longer than 128 chars, you might want to review the reasons for this... The bits 7-9 encode the character classes: upper-case, lower-case, digits. Bits 0xa - 0x2a are a boolean array storing if a particular symbol is allowed or not. *** Check digit The check-digit is a 5 bit number that is used as a simple check if the derived password is correct or not. There is a 1/32 chance that a wrong password goes on undetected. The check-digit is calculated as such: #+BEGIN_SRC check-digit = blake2b("sphinx check digit context", rwd, 1)[0] & 0x1f #+END_SRC *** rwd to ASCII conversion The conversion from the 64 byte array to an ASCII printable string containing only the characters allowed by the rules interprets the 64 bytes as an integer in big-endian order and then encodes it base-n, where n is the number of characters allowed by the rules. The digits are in the order - if allowed -: upper-case, lower-case, digits, and the symbols in the order as they are listed in the compacted rules blob. In pseudo-code: #+BEGIN_SRC python v = int.from_bytes(rwd, 'big') result = '' while (size > 0 and len(result) < size) or (size == 0 and v > 0): idx = v % len(chars) v //= len(chars) result = chars[idx] + result return result #+END_SRC *** RWD Xor Masks and Pre-defined Account Passwords Since the conversion from the binary rwd to the ASCII account password is simple arithmetic it is also possible to reverse. This allows us to calculate the binary rwd that SPHINX should output in order to generate a specified password. It is however not possible do actually make SPHINX output this value directly. In order to allow certain non-random pre-defined passwords to be output by SPHINX we xor the rwd with the xor mask from the rules blob. Normally the xor mask is also totally random, and thus the output of the SPHINX query is thus also totally random. If the user specifies a pre-defined password during Create or Change operations, we first calculate backwards the target rwd that would produce that pre-defined output, and then we xor this target-rwd with the rwd of the SPHINX query and store the result in the xor mask. It is important to notice, that the maximum length of such pre-definied output passwords is maximum 77 characters long. __Warning__ this mode generates passwords that violate the security guarantees of the SPHINX protocol and should be avoided if possible. This mode only exists as a convience function and as such is a perfect example of convenience weakening security. Converting a base-n number back into an rwd is as simple as the following example pseudo-code: #+BEGIN_SRC python le_str = string[::-1] result = sum(chars.find(le_str[i]) * len(chars)**i for i in range(len(le_str))) return int.to_bytes(result, 64, 'big') #+END_SRC Xor masks (can) have another purpose, they can ensure that in fact all character classes requested in the rules are actually satisfied. When a create or change operation generates a new password that does not satisfy all rules, then randomly choosing a new xor mask until all rules are satisfied can quickly and transparently guarantee that all rules are satisfied. This is quicker than requesting the server (or running a full DKG again) to generate a new seed. However this SHOULD only be applied at account passwords that are longer than 8, otherwise the different character class rules can introduce a bias that makes it slightly easier to bruteforce the account password. ** Encrypted blobs Although Password Rules contain little information, we decided to keep them confidential from the server, some special combination of rules might leak information regarding which service this password authenticates to. The symmetric encryption key (aka sealkey) for blobs - used for protecting password rules and user records (see later) - is derived from the client master-key (see below) as follows: #+BEGIN_SRC enc_key = blake2b("sphinx encryption key", masterkey) #+END_SRC Encryption/decryption of blobs is done using `crypto_aead_xchacha20poly1305_ietf_encrypt()`. Thus all encrypted blobs are prefixed with a 24 bytes nonce and extended with a 16 bytes authentication tag. Blobs are prepended with an authenticated but unencrypted version byte. The value 0x00 is representing v1 records, and the value 0x01 is representing v2 records, the most important difference between these two is that v2 records have 64 byte xormasks instead of 32 bytes as used by v1 records. ** The client master-key As mentioned in the previous "Encrypted blobs" section the sealkeys are derived from a client master-key. Although SPHINX itself is a protocol which does not require any state stored at the client. It lends itself to use SPHINX itself to authenticate any management operation. Unfortunately this means that the server would be able to mount offline bruteforce attacks against the master password, and hence it is not possible to use SPHINX to authenticate with a SPHINX server directly without throwing out one of the most important security guarantees of the SPHINX protocol. A possible solution is to introduce state in the client, which can be used to create a simple and boring-crypto wrapper around SPHINX, and it also helps solve a few other challenges. We decided for this solution and thus our Extended Sphinx Protocol requires a master-key at the client. This key must be synched to other devices that belong to the same user in case the user wants to use the same accounts on multiple devices. This master-key can (and should) be backed up by the user to provide access to their passwords and to be able to manage them. It is important to note that the passwords themselves to not depend in any way on this master-key. The master-key is only used for generating the record IDs, to derive authentication keys for management operations and to generate encryption keys for the encryption of user and rules blobs. For more information on what the loss of confidentiality of this master-key means see our section: Bruteforce attacks against our Sphinx implementation. ** Record IDs In order to store different accounts, we need to be able to refer to them somehow. Record IDs should be calculated by the client in the following way: #+BEGIN_EXAMPLE id_key = blake2b("sphinx host salt", masterkey) id = blake2b(user||host||sphinx server name, id_key) #+END_EXAMPLE The id_key is necessary to prohibit guessing IDs and pre-computation dictionary attacks against these ids. This way of generating record ids should also protect against phishing as long as the hostname is directly taken from the URL-bar, it should not match the correct hostname, and thus the protocol will fail because no appropriate record is found. The lack of a record where you expect one is also a warning-sign for being phished. The inclusion of the SPHINX server name in the hash of the ID ensures that the ID is unique depending on the server it belongs to. This makes the records unlinkable across servers, which is especially useful in case of a threshold SPHINX setup. An attacker having access to t threshold servers records will be unable to know which record on each of the compromised servers belongs to the same ID and thus can be used to reassemble a record, forcing the attacker to bruteforce- combine also the shares. ** Authentication The following management operations require authentication: Change, Change DKG, Commit, Undo, Delete, Read. Authentication always starts with a basic Sphinx query, so that in case the client uses Authentication-keys with master passwords (see above) it can derive the correct key depending on the master password. Since this is always executed the server does not learn which kind of authentication key method the client uses. When the server sends back the `beta` value from it's part of the Sphinx query, it also sends along a random nonce to the client. The client derives its authentication key, and signs the original request concatenated with the nonce, then sends back the signature to the server. #+BEGIN_SRC python sig = detached_sign(privkey, (op+id+alpha+nonce)) #+END_SRC Note, for READ operations there is no alpha value, and thus the signed payload is only ~op+id+nonce~. The server takes the authentication public key from the Sphinx record and verifies the signature over the the original request and the nonce with this authentication public key. If this verification fails, the server aborts, otherwise it resumes control to the management operation requested. ** Authentication keys for management operations Management operations change the records stored at the sphinx server, these need to be somehow authenticated to prevent denial of service for legitimate users. The following operations are authenticated: Change, Commit, Undo, Delete, Userlist Updates to user records need to be signed with the private key for which the corresponding pub key is already stored at the user record. Our protocol provides two authentication mechanisms, one requiring knowledge of the master password for a record, the other one only requires knowledge of the client secret. Both have their benefits and drawbacks. If the authentication succeeds the server responds with a message "auth" prefixed with the big-endian 16 bit length: '\x00\x04auth' In case of failure the token is "fail" and similarly prefixed with the length: '\x00\x04fail'. *** Authentication-keys without master passwords If the rwd_keys configuration option is set to false, management operations are authenticated in the following way: When creating a new record, the client sends along a unique pubkey, that is used to authenticate all later management operations. The pubkey is generated as such: #+BEGIN_SRC key0 = blake2b("sphinx signing key", masterkey) seed = blake2b(key0, id) pk, sk = e25519_keypair(seed) #+END_SRC The parameter id used to calculate key1 is the record id, we use this to derive unique keys for each record that cannot be linked to other keys derived from the same master key. Note that the use of the `id` parameter, and the fact that the calculation of it also utilizes the name of the SPHINX server results in unique keys for the same record across all threshold SPHINX servers. This means that also the authentication public keys are unlinkable not only across users and records, but also servers. Drawback of this method is that anyone with the master key can enumerate accounts at the sphinx server and run authenticated management operations against them. However in this case the attacker neither learns the master nor the account password, this can only be used to cause a denial of service by deleting the record or changing the server seed. *** Authentication-keys with master passwords If the configuration option rwd_keys is enabled, then the rwd is also added to the key: #+BEGIN_SRC key0 = blake2b("sphinx signing key", masterkey) key1 = blake2b(key0, id) seed = blake2b(key1, rwd) pk, sk = e25519_keypair(seed) #+END_SRC The rwd is the raw output of the SPHINX protocol, and by mixing it into the authentication key we make sure only users knowing the master password can execute management operations. Note again that due to the inclusion of the ID and it being dependent on the SPHINX server name, this key is also unique across all servers and records, making them unlinkable. The drawback of this authentication method is that this allows anyone with the authentication public key, the sphinx seed (both of which are on the server) and the client master key to mount an offline bruteforce attack against the master password. ** Sphinx Records Sphinx records are referenced by the record ID. All Sphinx Records stored at the sphinx server have the following three components: - the sphinx seed (aka OPRF key) - authentication public key - encrypted password rules The seed (also referred to as simply the - OPRF - "key"), is the secret component which during the Sphinx Query is contributed by the server to the final rwd. In v2 this is a 33 byte array, with the first byte denoting the index of the share in the threshold setup, if this is a key for a non-threshold setup this value is 1. The index byte can only have valid values 1..128 inclusive, other values are invalid. The remaining 32 bytes are the ristretto255 scalar value, that is used as the key in the OPRF for the server-side evaluation. The authentication public key is a unique ed25519 key used to authenticate management operations on this record. The encrypted password rules are also unique due to the unique nonce used on each server in case of a threshold SPHINX setup. ** User records A convenience function by password managers is to offer the user the list of usernames known by the manager when logging into a site. While not strictly necessary, it is a feature that users expect. In our extended protocol we provide a special kind of record, which we call user records, these are encrypted blobs, which contain a list of usernames. The record id for these records is generated as normal records, with the user component provided as an empty string. Clients might opt to not use User records, if this is not desired, then during any protocol run that accesses user records, the client SHOULD send a record ID of all zeros, and the server will skip user record handling. Our extended protocol provides a READ primitive to fetch these blobs, however writing these blobs is only possible implicitly through the CREATE and DELETE sphinx record management operations. It is of course possible to create some bogus SPHINX entry, just to store some "secret" instead of a username in the user record, but the protection of these records is not very strong, there are countless better methods to do so. The usernames in these records a separated by 0x0 bytes, and the whole record cannot be bigger than (64KB - 40) bytes - the 40 bytes are reserved for the nonce and authentication tag of encrypted blobs. Furthermore these user records are prefixed by their length in 2 bytes network order, but these two bytes do not count towards the maximum size of the user record. The structure of these encrypted user record blobs thus looks like this: #+BEGIN_EXAMPLE +--------------+----------+------------+--------------------+ | 2 bytes | 24 bytes | n bytes | 16 bytes | |--------------+----------+------------+--------------------| | size of blob | nonce | ciphertext | authentication tag | +--------------+----------+------------+--------------------+ #+END_EXAMPLE ** The Extended Sphinx Protocol Messages The following operations make up the extended protocol: - Create: create a new record - Create DKG: create a new threshold SPHINX record by running a DKG - Get: query a record - Change: change the seed and update the password rules and auth pubkey associated with the record - Change DKG: change the record in a threshold setup by running a DKG - Commit: activate the changed seed, password rules and auth pubkey, saving a backup copy of the previous values - Undo: restore the backup seed, password rules and auth pubkey activated by a Commit operation. - Delete: delete a record - Read: query the list of registered users with a host The user needs a client master-key and their master password to successfully address records and to authenticate management operations. ** Initial messages All initial messages (except the `read`, `create` and `*_dkg` operations) sent from the client to the server have the same structure: #+BEGIN_SRC u8 ratelimit_opcode u8 opcode u8 id[32] u8 alpha[32] #+END_SRC All operations - except the create and the create dkg operations - are subject to ratelimiting, and the initial message is part of the puzzle that must be solved, before the operation can be processed. For the create operations there is no ratelimit and hence the initial message for `create` and `create_dkg` operations lacks the first `ratelimit_op` field. The `create_dkg` operation has one extra field, the DKG message 0: #+BEGIN_SRC u8 opcode = 0xf0 u8 id[32] u8 alpha[32] u8 msg0[177] #+END_SRC Since there is no rwd necessary - only the client master-key - for querying the user list the initial message of the read operation is lacking the last `alpha` member. The ratelimit_opcodes are the following: #+BEGIN_SRC CHALLENGE_CREATE = 0x5a CHALLENGE_VERIFY = 0xa5 #+END_SRC Here `CHALLENGE_CREATE` requests a new ratelimiting challenge, and `CHALLENGE_VERIFY` presents a solution. For more information on ratelimiting see the dedicated chapter below. The opcodes for the messages are the following: #+BEGIN_SRC CREATE = 0x00 READ = 0x33 UNDO = 0x55 GET = 0x66 V1GET = 0x69 COMMIT = 0x99 CHANGE_DKG = 0xa0 CHANGE = 0xaa CREATE_DKG = 0xf0 V1DELETE = 0xf9 DELETE = 0xff #+END_SRC The `id` member of the message is the record ID as specified above, and the `alpha` value is the hashed and blinded master password as required by the sphinx Protocol. ** TLS All messages between the client and the sphinx server are conducted over a TLS connection. The original SPHINX protocol was supposed to not need any extra encryption - since the blinding itself already provides confidentiality. However already the fact that the sphinx records need to be indexed by some identifier break this nice property of the original SPHINX protocol. Using TLS provides confidentiality against passive attackers collecting statistics about which IDs are being used. ** Management Operations *** Creation of records Creation of a record is a quite straight-forward matter: 1. The client initiates a CREATE operation on the server - including a run of the SPHINX Query (see above), but the server instead of loading a sphinx seed (which doesn't exist yet) just generates one randomly or engages in a TP-DKG with all other servers in case of a threshold configuration. 2. The client derives the encryption and authentication key. The password rules are encrypted and appended to the authentication public key. The auth pubkey and the encrypted rules are signed with the auth private key and sent to the server 3. If the userlist feature is enabled the client updates the user record (see below) for this host, requesting the current user record or the all-null record to signal skipping of this step if userlists are disabled by the client. If userlists are enabled the client decrypts the userlist received from the server, and appending the new user to this record, finally sending the encrypted blob back to the server. 4. If everything went well, the server stores the pubkey and the password generation rules next to the seed already generated in the first step of the CREATE operation. 4. Finally the client uses the rwd to derive the password using the password rules, and returns the newly generated account password to the user. Notable is that neither ratelimiting nor authentication happen during creation - (note there is authentication when updating the user record, but not when creating a user record). *** Changing of passwords/records 1. Changing of a record requires authentication. 2. Successful authentication is followed by the client initiating a second Sphinx Query - possibly with a changed master password and also sending along a newly encrypted password rules blob. This allows a client - if required - to change either of these, but they can also stay the same. 3. The server generates a new sphinx seed (either randomly or engaging in a TP-DKG with all other servers) and executes its part of the Sphinx query on it - sending back the resulting `beta` value to the client. 4. The client can finish the Sphinx query using the new sphinx rwd. Using this it can generate a new authentication key-pair (if the rwd is included in it). It signs the new public key with the new secret key - just to prove ownership of this keypair, and sends the signed public key back to the server. note when the setting rwd_keys is set to false, no new key is generated, but the old one must still be sent to the server. 5. The server checks if the public key can be used to verify the signature over it, if successful the server stores the new sphinx seed, the new auth public key and the new encrypted password rules blob marking them all as `new` - still keeping the original values active. If all this succeeds the server finally sends back the string "ok" to the client. 6. Upon receiving the "ok" message from the server, the client using the possibly changed password rules derives the new rwd from the result of the second sphinx query and returns the new password to the user. The above procedure allows a user to change or keep their master password, or to change the password rules if needed. But it is also possible to just generate a new password by keeping the old values, the fact that the server generates a new sphinx seed guarantees that the new password will be different from the old one. Also notable is, that this operation in fact does not change the password despite its name, it merely generates a new one, which still needs to be activated using the Commit operation. Client implementations MAY automatically call Commit after a successful Change operation. *** Commit new record To allow for errors during the changing of passwords on a service, the old password is still active until the user commits the change, which effectively replaces the current record with the new one. The Commit operation is a simple flow, it starts with an authentication using the current master password if required by the rwd_keys setting. And if this succeeds the server replaces the current record. The old password, authentication public key and password rules are marked as old, in case the change of the password fails and the account is still stuck with the old password, the Commit operation can be reverted by the Undo operation. *** Undo commit record To allow for errors during the changing of passwords on a service, the old user record is retained after the user commits the change. This allows to revert the Commit and use the old password. This function is provided in case the password change at the service fails for some reason. Undoing is a simple flow and very similar to the Commit operation, it starts with and authentication using the currently active master password if this is required by the rwd_keys setting. If the authentication succeeds the server marks the current record as new. The current password, authentication public key and password rules are replaced bye the old one. The Undo operation can be redone by the Commit operation to accomodate confusion when updating an account password. *** Deletion of keys The Delete operation deletes a sphinx record and updates the user record. The operation starts with an authentication, if it succeeds it optionally - depending on the userlist configuration value - updates the user record and finally deletes the sphinx record. ** User Record Operations The record id for user ids is calculated similarly to sphinx record ids, with the only difference that the username is set to an empty string. The special user record id of all-nulls is reserved for skipping the operation on user records. *** Reading of user records Reading of user is a simple flow which after successful authentication returns the encrypted user record blob. *** Updating of user records Updating user records can only be done by creating or deleting sphinx records. During an create or delete operation: 1. An update is initiated by sending the user record id to the server. 2. The server responds with the user record if there is such, or an empty user record if there is none. User records are always prefixed with 2 bytes representing their size, empty user records are thus signaled by responding with two zero bytes. If there was no existing user record, then a create user record flow is executed: The client 1. derives an authentication key-pair for this user record. 2. it encrypts the user name as an encrypted blob. 3. This blob is prefixed with its size represented by 2 bytes in network order. 4. The prefixed blob is concatenated after the public authentication key. 5. This is then signed by the authentication secret key. 6. And finally this sent to the server In pseudo-code this looks as such #+BEGIN_SRC id = getid(host) authkey, pubkey = getauthkey(id) send(signed_message(authkey, pubkey || (uint16_t) sizeof(blob) || blob)) #+END_SRC The server: 1. receives the authentication pubkey, the size of the blob, the blob itself, and the signature over the whole message. 2. using the authentication pubkey the server verifies the signature, if this verification fails the server aborts. 3. the server stores the auth pubkey and the user record blob under the user record id. If there already was an existing user record, then an update user record flow is executed which is simpler than the create flow, since we do not have to generate or send authentication keys. The client 1. decrypts the user record blob sent by the server 2. it adds the new user to the decrypted list of users 3. it encrypts the list of users into an encrypted user record blob 4. the encrypted user record blob is prefixed by its size represented in two bytes in network order. 5. the size-prefixed blob is signed by the authentication key 6. the signed blob is sent to the server. In pseudo-code this looks as such #+BEGIN_SRC id = getid(host) authkey, pubkey = getauthkey(id) send(signed_message(authkey, (uint16_t) sizeof(blob) || blob)) #+END_SRC The server: 1. receives the size of the blob, the blob, and the signature over this. 2. it loads the authentication public key from the user record 3. it then verifies the signature over the blob, if this verification fails the server aborts. 3. it stores the user record blob under the user record id. ** Weaknesses 1. When using server side user-lists the server can correlate which records belong to the same user and target server. This can be disabled by sending an all-zero record id for the userlists, which skips user records processing. 2. Server can collect usage statistics on sphinx records. 3. Management operations have unique communication patterns, even through the TLS encryption it can be deduced which operation is being run. The info leakage is due to the size and direction of data being passed between the server and the client. 4. When updating user records the requested record (if it exists) is returned without any authentication. It is thus possible to use a create sphinx record and then send an arbitrary user record id, the update user record flow can then be aborted by just closing the connection, or sending an invalid user record that cannot be authenticated by the pubkey known to the server. The server in this case will abort the update user record and the create sphinx record operation without changing anything. And thus it is possible for an attacker to circumvent the authentication required during the READ operation. 5. The change operation leaks if a client is configured to use the rwd in the authentication. If the rwd is included in the auth key then a new unique public auth key is generated, if rwd is not used in the auth key, then the old and new public key are the same. A threshold mitigates the offline bruteforce threat, but not the infoleak threat (which leaks this info to all servers anyway). * Bruteforce attacks against our Sphinx implementation Given the following abstract model of the SPHINX protocol: #+BEGIN_EXAMPLE Sphinx(seed) <--<[get password]--> Client(secret) <--[login]--> Server(userdb) ^ ^ ^ \----------------------------> Attacker <---------------------/ #+END_EXAMPLE If SPHINX is deployed in a threshold setup the compromise of as much servers is necessary to reach the threshold. Compromising less servers than enough to reaching the threshold is equivalent to not compromising a server in the single-server setup.t ** None of the 3 parties are compromised We know that simply bruteforcing the user password on the Server is infeasable for the attacker, since the server password is independent and of high entropy. Lacking any other information makes any online bruteforce attacks involving the Sphinx storage also unfeasable since the user ids under which the seeds are stored an practially ungueassable. ** The Sphinx storage is compromised and the attacker has access to the Sphinx seeds. An attacker can only run online attacks against the Server to recover a single login password to the Server recovering also the master password. The following defenses can make an attack more difficult by: a) using unique master passwords for each account - which is unreasonable. b) using a few master passwords, one for less valuable, and a few for high value accounts. c) using a memory-hard password hashing function on the Client, which also the attacker has to use - slowing down the attack. d) rate-limiting on the Server. e) Account lock-down after a certain threshold of failed logins. Of these defenses a) and b) are up to the user to implement, c) is implemented in our library using argon2i and d) and e) is up to the Server to implement. It is worth noting, that in our Sphinx implementation, the userids for the Sphinx seeds are derived from a client-secret. Thus an attacker having access to the Sphinx seeds but none of the client secrets, has no way of knowing which seed belongs to which user/server account, and thus make the online queries shots in the dark. ** The Client secret is available to the attacker This can happen for example by leaking your client secret while scanning it as a QR code. Using a leaked client secret an attacker can enumerate the username/host combinations known by a sphinx server. This attack is online-bruteforce only though, although a dictionary can significantly aid such an attack. Having recovered an ID allows an attacker to mount an online bruteforce attack against the master password. This attack requires the attacker to first do an online query to the Sphinx server then using the derived password in an online query against the Server to check if the derived password is correct, thus revealing the master password. The only obvious defense against this attack is ratelimiting and (b)locking bruteforce attackers in the enumeration phase and the master password recovery phase. ** The Service user db is leaked Lacking the Client secret makes any online bruteforce attacks involving the Sphinx storage unfeasable since the user ids under which the seeds are stored an practially ungueassable. ** Both the Client secret and the Server user db is available to the attacker Online Bruteforcing the master password means the attacker first - using the Client secret - finds an existing userid on the Sphinx storage belonging to a username/server pair. The attacker then uses online the Sphinx storage to derive the candidate password and then validates the candidate online against the Server with the guessed username. To defend against this case we can deploy rate-limiting on both the Sphinx storage and the Server. ** The Server is compromised and the user db is available to the attacker a) offline dictionary attacks against the Server password are infeasable, since the Server password is unique and of high entropy. b) Online attacks against the master password are possible, and are similar to the Online attack against the master password in the case where the Client Secret and the Server user db is compromised without a need to do online verification against the Server, thus making this attack slightly easier than the online master password guessing attack than that case. To protect against case b) the attacker can be slowed down by - using a memory-hard password hashing function in the protocol, which in our implementation is argon2i. - deploying a rate-limiter at the Sphinx storage. ** Both the Sphinx Storage and a Client secret are available to the attacker In this case the attacker can bruteforce the userids using the client secret to figure out which seed belongs to which username at which server. Having found out a seed belonging to the client secret enables an attacker to mount an offline bruteforce attack against the master password belonging to this account. The attacker simply calculates the OPRF directly without the blinding ( hash(master + hash(master)*seed)), derives the client signing key from it and the client secret, and checks if the resulting client signing pubkey is the same as stored with the seed. ** Both the Sphinx Storage and the Servers user db is available to the attacker The attacker does not know which sphinx seeds contribute to which passwords in the Server user db. This means the attacker can run ab offline bruteforce attack in which each seed must be bruteforced against all the target accounts from the server user database. Although this can be parallelized the attacker is slowed down by the memory-hard password hashing function which is used in our implementation. ** Lucky jackpot: The Sphinx seeds, the Client secret and the Server user db is available to the attacker Using the Client seed and the usernames in the Server user db the attacker can trivially find out which Sphinx seed belongs to which Server user db account. The attacker then can recover the master password used for this specific account by running a targeted offline bruteforce attack. Having recovered the master password, the attacker can offline bruteforce the other username/server combinations of the Sphinx seeds that share the same master password and Client secret, and thus recover all Server username/password/hostnames that share the same master password. * Rate-limiting the Sphinx Storage In the section "Bruteforce attacks against our Sphinx implementation", we identified three cases when the Sphinx storage is not available to the attacker an online bruteforce attack can be futher slowed down by deploying rate-limiting. ** IP address based rate-limiting IP address-based rate-limiting is a common measure. It is supported at the kernel level, but also on application level there are solutions for this (e.g. haproxy). However the problem with ip-based rate-limiting is that it does not protect against botnets with many different ip addresses, and if the server to be protected also can be reached via TOR or via IPv6, in the latter case attackers can simply exploit a /64 address space or even more. On the other hand, IP based rate-limiting is computationally very cheap, and can be done without changing the sphinx protocol. It can be a simple defense-in-depth measure. ** UserID based rate-limiting Another approach could be to rate-limit access to userids. The problem with querying the Sphinx password store is that the password store has no knowledge whether the users password input is correct or not. Thus we cannot limit only failing attempts. This also means we need to store state about number of access within a time-window and exponentially increase or decay a rate-limit. ** Proof-of-Work client puzzles Another approach could be to require the client to solve a small puzzle before the Sphinx server processes any requests. It must be noted, that - in the case of an online bruteforce attack - the client must already compute one elliptic curve scalar multiplication before the request, and one scalar multiplication, one scalar modular invert and one argon2i password hash after receiving the response from the sphinx server. While the Sphinx server only needs to do one scalar multiplication thus the server load is smaller than the client load.. An important aspect is that the cost to verify the client puzzle must be negligible, but solving the puzzle must be hard. The Equihash protocol[1] seems to be a suitable candidate for such since it can be tuned to various difficulties and it provides also memory hardness. [1] https://eprint.iacr.org/2015/946 Equihash client puzzles can be applied against requests based on IP addresses or UserIds with a dynamic difficulty based on number of access within a certain time-window. An open question remains whether to prohibit offline precomputation of equihash puzzles or not. Pre-computation could be prohibited by the Sphinx storage providing a nonce to a rate-limited client. The drawback is, that this nonce needs to be preserved by the Sphinx storage for the duration of the connection and this adds one extra round-trip to the protocol and ties up one worker process possibly leading to quick resource exhaustion. However it would allow to abort any request where the puzzle is not solved in time. An alternative approach would be the non-interactive approach, where the puzzle is the session transcript consisting of the userid and the blinded password together with a fresh timestamp, this approach would not require extra round-trips nor maintaining state at the Sphinx storage, but it would allow precomputation for an attacker. ** Rate-limiting in the threshold setting A client must solve all rate-limit puzzles in time to be able to interact with the SPHINX servers, in case of increased puzzle difficulty in combination with large threshold values can lead to significant strain on the client. ** Equihash puzzle-wrapped Sphinx The current implementation of the wraps our Extended Sphinx protocol in the following way. 0. The server has three configuration settings that affect the speed at which the ratelimiting gets more difficult or easier: - rl_decay: decrease ratelimiting difficulty for each full rl_decay seconds passed without any requests coming in. - rl_threshold: increase difficulty after rl_threshold attempts if not decaying - rl_gracetime: when checking freshness of puzzle solution, allow this extra gracetime in addition to the hardness max solution time The server also has a private puzzle key, with which it signs puzzles using a keyed blake2b hash. 1. all operations - except create, which makes no sense to bruteforce - are wrapped in the ratelimiting protocol. 2. a client prepares their Extended Sphinx request, and if it is not a create operation prepends it with a 0x5a byte - which requests the server to respond with a challenge. This is sent to the sphinx oracle. (note create requests do not have a 0x5a prefix, and get directly handled) 3. The server recognizing the 0x5a prefix as a ratelimiting puzzle request, checks if the userid in the extended sphinx request has already a ratelimiting context available and either loads it or creates one with the easiest possible difficulty. A corrupted context is automatically set to the most difficult hardness. 4. If a correct context was loaded the hardness is either decayed or (slowly) increased. If the previous ratelimiting request was recorded longer than rl_decay seconds ago, the difficulty is decreased by each full rl_decay epoch that has passed since the last request. If the last recorded rate-liming request was less than rl_decay seconds ago, we increase a counter in the context, if this counter is greater than rl_threshold we reset this counter and increase the difficulty of the puzzle by one level. 5. Based on the context difficulty level the puzzle is created as following: The original request and the equihash parameters - based on the context difficulty level - n and k (both unsigned 8bit integers) are concatenated with a 32bit timestamp. Using the servers puzzle key this concatenation is then signed using a keyed blake2b hash. The hash is appended to the concatenation forming the challenge. #+BEGIN_SRC challenge = n || k || timestamp sig = blake2b(key, request || challenge) challenge = challenge || sig #+END_SRC 6. The challenge is sent to the client, the socket is closed. 7. The clients solves the equihash puzzle for the n and k parameters from the challenge, and uses the challenge concatenated to the original request as the seed. 8. The client opens up a new connection to the server (the previous connection was closed by the server at the end of step 6.) and sends the following message: #+BEGIN_SRC '\xa5' || challenge || request || solution #+END_SRC 9. The server recognizing the 0xa5 prefix, first reads the challenge and the original request. The signature over the request and challenge is verified, the server aborts if this does not succeed. 10. The server verifies that the timestamp in the challenge is not older than a difficulty-dependent timeout plus the configuration value rl_gracetime. These timeouts are measured by the average time to solve the challenge on a raspberry pi 1 - except the ones that require more than 256MB of ram, those values are extrapolated from the measurements that fit into this memory. If the timestamp is older than the timeout plus the gracetime, the server aborts. 11. The server reads also the solution from the network and verifies it, if the verification fails, the server aborts. 12. The server hands over the original request to the extended sphinx protocol handler.