SHA512t.hs

{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE TypeFamilies #-}

-- |
-- Module      : Crypto.Hash.SHA512t
-- License     : BSD-style
-- Maintainer  : Vincent Hanquez <vincent@snarc.org>
-- Stability   : experimental
-- Portability : unknown
--
-- Module containing the binding functions to work with the
-- SHA512t cryptographic hash.
module Crypto.Hash.SHA512t (
    SHA512t_224 (..),
    SHA512t_256 (..),
) where

import Crypto.Hash.Types
import Data.Data
import Data.Word (Word32, Word8)
import Foreign.Ptr (Ptr)

-- | SHA512t (224 bits) cryptographic hash algorithm
data SHA512t_224 = SHA512t_224
    deriving (Show, Data)

instance HashAlgorithm SHA512t_224 where
    type HashBlockSize SHA512t_224 = 128
    type HashDigestSize SHA512t_224 = 28
    type HashInternalContextSize SHA512t_224 = 256
    hashBlockSize _ = 128
    hashDigestSize _ = 28
    hashInternalContextSize _ = 256
    hashInternalInit p = c_sha512t_init p 224
    hashInternalUpdate = c_sha512t_update
    hashInternalFinalize p = c_sha512t_finalize p 224

-- | SHA512t (256 bits) cryptographic hash algorithm
data SHA512t_256 = SHA512t_256
    deriving (Show, Data)

instance HashAlgorithm SHA512t_256 where
    type HashBlockSize SHA512t_256 = 128
    type HashDigestSize SHA512t_256 = 32
    type HashInternalContextSize SHA512t_256 = 256
    hashBlockSize _ = 128
    hashDigestSize _ = 32
    hashInternalContextSize _ = 256
    hashInternalInit p = c_sha512t_init p 256
    hashInternalUpdate = c_sha512t_update
    hashInternalFinalize p = c_sha512t_finalize p 256

foreign import ccall unsafe "crypton_sha512t_init"
    c_sha512t_init :: Ptr (Context a) -> Word32 -> IO ()

foreign import ccall "crypton_sha512t_update"
    c_sha512t_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

foreign import ccall unsafe "crypton_sha512t_finalize"
    c_sha512t_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()