Cryptography.Twistree

Documentation

data Twistree

Instances

Show Twistree

Defined in Cryptography.Twistree

Methods

showsPrec :: Int -> Twistree -> ShowS

show :: Twistree -> String

showList :: [Twistree] -> ShowS

type SBox = Vector Word8

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

sboxes :: ByteString -> SBox

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

sameBitcount :: SBox -> [Word8]

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

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

linearSbox :: SBox

A linear SBox used for cryptanalysis

linearTwistree :: Twistree

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

parListDeal

Arguments

:: Int

n, the number of threads

-> Strategy a

-> Strategy [a]

Deals a list among threads; each thread evaluates the items of its part of the list in sequence, and all the threads run in parallel. If n is 12, the 0th, 12th, 24th, ... items are evaluated by one thread, the 1st, 13rd, 25th, ... items are evaluated by another thread, and so on.

keyedTwistree :: ByteString -> Twistree

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

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.