| Copyright | Peter Robinson 2014 |
|---|---|
| License | LGPL |
| Stability | experimental |
| Portability | portable |
| Safe Haskell | None |
| Language | Haskell2010 |
Crypto.SecretSharing.Internal
Description
Synopsis
- polyInterp :: Fractional a => [(a, a)] -> a -> a
- slidingFocus :: [a] -> [([a], a, [a])]
- data ByteShare = ByteShare {
- shareId :: !Int
- reconstructionThreshold :: !Int
- shareValue :: !Int
- data Share = Share {}
- encode :: Int -> Int -> ByteString -> IO [Share]
- decode :: [Share] -> ByteString
- encodeByte :: Int -> Int -> Polyn -> FField -> Vector ByteShare
- decodeByte :: [ByteShare] -> FField
- groupInto :: Int -> [a] -> [[a]]
- newtype FField = FField {
- number :: PrimeField 1021
- prime :: Int
- type Polyn = [FField]
- evalPolynomial :: Polyn -> FField -> FField
Documentation
polyInterp :: Fractional a => [(a, a)] -> a -> a Source #
Evaluate a Lagrange interpolation polynomial passing through the specified set of points.
slidingFocus :: [a] -> [([a], a, [a])] Source #
A share of an encoded byte.
Constructors
| ByteShare | |
Fields
| |
Instances
A share of the encoded secret.
Instances
Arguments
| :: Int | m |
| -> Int | n |
| -> ByteString | the secret that we want to share |
| -> IO [Share] |
Encodes a ByteString as a list of n shares, m of which are required for
reconstruction.
Lives in the IO to access a random source.
Arguments
| :: [Share] | list of at least |
| -> ByteString | reconstructed secret |
Reconstructs a (secret) bytestring from a list of (at least m) shares.
Throws AssertionFailed if the number of shares is too small.
decodeByte :: [ByteShare] -> FField Source #
groupInto :: Int -> [a] -> [[a]] Source #
Groups a list into blocks of certain size. Running time: O(n)
A finite prime field. All computations are performed in this field.
Constructors
| FField | |
Fields
| |
Instances
| Eq FField Source # | |
| Fractional FField Source # | |
Defined in Crypto.SecretSharing.Internal | |
| Num FField Source # | |
| Ord FField Source # | |
| Read FField Source # | |
Defined in Crypto.SecretSharing.Internal | |
| Show FField Source # | |
| Generic FField Source # | |
| FiniteField FField Source # | |
| type Rep FField Source # | |
Defined in Crypto.SecretSharing.Internal type Rep FField = D1 ('MetaData "FField" "Crypto.SecretSharing.Internal" "secret-sharing-1.0.1.2-EpWstegp4MSHE4WyhxsNf9" 'True) (C1 ('MetaCons "FField" 'PrefixI 'True) (S1 ('MetaSel ('Just "number") 'NoSourceUnpackedness 'NoSourceStrictness 'DecidedLazy) (Rec0 (PrimeField 1021)))) | |