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-- |
-- Module : Crypto.Hash.SHA1
-- License : BSD-style
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
-- Stability : experimental
-- Portability : unknown
--
-- Module containing the binding functions to work with the
-- SHA1 cryptographic hash.
--
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
module Crypto.Hash.SHA1 ( SHA1 (..) ) where
import Crypto.Hash.Types
import Foreign.Ptr (Ptr)
import Data.Data
import Data.Word (Word8, Word32)
-- | SHA1 cryptographic hash algorithm
data SHA1 = SHA1
deriving (Show,Data)
instance HashAlgorithm SHA1 where
type HashBlockSize SHA1 = 64
type HashDigestSize SHA1 = 20
type HashInternalContextSize SHA1 = 96
hashBlockSize _ = 64
hashDigestSize _ = 20
hashInternalContextSize _ = 96
hashInternalInit = c_sha1_init
hashInternalUpdate = c_sha1_update
hashInternalFinalize = c_sha1_finalize
instance HashAlgorithmPrefix SHA1 where
hashInternalFinalizePrefix = c_sha1_finalize_prefix
foreign import ccall unsafe "cryptonite_sha1_init"
c_sha1_init :: Ptr (Context a)-> IO ()
foreign import ccall "cryptonite_sha1_update"
c_sha1_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
foreign import ccall unsafe "cryptonite_sha1_finalize"
c_sha1_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()
foreign import ccall "cryptonite_sha1_finalize_prefix"
c_sha1_finalize_prefix :: Ptr (Context a) -> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest a) -> IO ()
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