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-- |
-- Module : Crypto.Hash.Blake2s
-- License : BSD-style
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
-- Stability : experimental
-- Portability : unknown
--
-- module containing the binding functions to work with the
-- Blake2s cryptographic hash.
--
{-# LANGUAGE ForeignFunctionInterface #-}
module Crypto.Hash.Blake2s
( Blake2s_224 (..), Blake2s_256 (..)
) where
import Crypto.Hash.Types
import Foreign.Ptr (Ptr)
import Data.Word (Word8, Word32)
-- | Blake2s (224 bits) cryptographic hash algorithm
data Blake2s_224 = Blake2s_224
deriving (Show)
instance HashAlgorithm Blake2s_224 where
hashBlockSize _ = 64
hashDigestSize _ = 28
hashInternalContextSize _ = 185
hashInternalInit p = c_blake2s_init p 224
hashInternalUpdate = c_blake2s_update
hashInternalFinalize p = c_blake2s_finalize p 224
-- | Blake2s (256 bits) cryptographic hash algorithm
data Blake2s_256 = Blake2s_256
deriving (Show)
instance HashAlgorithm Blake2s_256 where
hashBlockSize _ = 64
hashDigestSize _ = 32
hashInternalContextSize _ = 185
hashInternalInit p = c_blake2s_init p 256
hashInternalUpdate = c_blake2s_update
hashInternalFinalize p = c_blake2s_finalize p 256
foreign import ccall unsafe "cryptonite_blake2s_init"
c_blake2s_init :: Ptr (Context a) -> Word32 -> IO ()
foreign import ccall "cryptonite_blake2s_update"
c_blake2s_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
foreign import ccall unsafe "cryptonite_blake2s_finalize"
c_blake2s_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
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