Safe Haskell	Safe-Inferred
Language	Haskell2010

Cryptography.Twistree

Synopsis

data Twistree
type SBox = Vector Word8
sboxes :: ByteString -> SBox
sameBitcount :: SBox -> [Word8]
compress :: Vector Word8 -> Vector Word8 -> Int -> Vector Word8
linearSbox :: SBox
linearTwistree :: Twistree
parListDeal :: Int -> Strategy a -> Strategy [a]
keyedTwistree :: ByteString -> Twistree
hash :: Twistree -> ByteString -> Vector Word8

Documentation

data Twistree Source #

Instances

Instances details

Show Twistree Source #
Instance details Defined in Cryptography.Twistree Methods showsPrec :: Int -> Twistree -> ShowS # show :: Twistree -> String # showList :: [Twistree] -> ShowS #

type SBox = Vector Word8 Source #

Three 8×8 S-boxes used alternatively to substitute bytes

sboxes :: ByteString -> SBox Source #

Computes S-boxes from a key. Exported for cryptanalysis.

sameBitcount :: SBox -> [Word8] Source #

Returns a list of the bytes which, when looked up in the S-boxes, give three bytes (which may be the same) with the same bitcount. For cryptanalysis of the hash function.

compress :: Vector Word8 -> Vector Word8 -> Int -> Vector Word8 Source #

Compresses two or three 32-byte blocks into one. Exported for cryptanalysis.

linearSbox :: SBox Source #

A linear SBox used for cryptanalysis

linearTwistree :: Twistree Source #

A Twistree with linear SBox. Used only for testing and cryptanalysis.

parListDeal :: Int -> Strategy a -> Strategy [a] Source #

keyedTwistree :: ByteString -> Twistree Source #

Creates a Twistree with the given key. To convert a String to a ByteString, put - utf8-string in your package.yaml dependencies, import Data.ByteString.UTF8, and use fromString.

hash Source #

Arguments

:: Twistree	The `Twistree` made with the key to hash with
-> ByteString	The text to be hashed. It's a lazy `ByteString`, so you can hash a file bigger than RAM.
-> Vector Word8	The returned hash, 32 bytes.