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-- |
-- Module : Crypto.Hash.SHA512
-- License : BSD-style
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
-- Stability : experimental
-- Portability : unknown
--
-- Module containing the binding functions to work with the
-- SHA512 cryptographic hash.
--
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
module Crypto.Hash.SHA512 ( SHA512 (..) ) where
import Crypto.Hash.Types
import Foreign.Ptr (Ptr)
import Data.Data
import Data.Word (Word8, Word32)
-- | SHA512 cryptographic hash algorithm
data SHA512 = SHA512
deriving (Show,Data)
instance HashAlgorithm SHA512 where
type HashBlockSize SHA512 = 128
type HashDigestSize SHA512 = 64
type HashInternalContextSize SHA512 = 256
hashBlockSize _ = 128
hashDigestSize _ = 64
hashInternalContextSize _ = 256
hashInternalInit = c_sha512_init
hashInternalUpdate = c_sha512_update
hashInternalFinalize = c_sha512_finalize
instance HashAlgorithmPrefix SHA512 where
hashInternalFinalizePrefix = c_sha512_finalize_prefix
foreign import ccall unsafe "cryptonite_sha512_init"
c_sha512_init :: Ptr (Context a)-> IO ()
foreign import ccall "cryptonite_sha512_update"
c_sha512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
foreign import ccall unsafe "cryptonite_sha512_finalize"
c_sha512_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()
foreign import ccall "cryptonite_sha512_finalize_prefix"
c_sha512_finalize_prefix :: Ptr (Context a) -> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest a) -> IO ()
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