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-- |
-- Module : Crypto.Hash.Blake2b
-- License : BSD-style
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
-- Stability : experimental
-- Portability : unknown
--
-- module containing the binding functions to work with the
-- Blake2b cryptographic hash.
--
{-# LANGUAGE ForeignFunctionInterface #-}
module Crypto.Hash.Blake2b
( Blake2b_512 (..)
) where
import Crypto.Hash.Types
import Foreign.Ptr (Ptr)
import Data.Word (Word8, Word32)
-- | Blake2b (512 bits) cryptographic hash algorithm
data Blake2b_512 = Blake2b_512
deriving (Show)
instance HashAlgorithm Blake2b_512 where
hashBlockSize _ = 128
hashDigestSize _ = 64
hashInternalContextSize _ = 361
hashInternalInit p = c_blake2b_init p 512
hashInternalUpdate = c_blake2b_update
hashInternalFinalize p = c_blake2b_finalize p 512
foreign import ccall unsafe "cryptonite_blake2b_init"
c_blake2b_init :: Ptr (Context a) -> Word32 -> IO ()
foreign import ccall "cryptonite_blake2b_update"
c_blake2b_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
foreign import ccall unsafe "cryptonite_blake2b_finalize"
c_blake2b_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
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