-- |
-- 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 (Int -> SHA1 -> ShowS
[SHA1] -> ShowS
SHA1 -> String
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instance HashAlgorithm SHA1 where
    type HashBlockSize           SHA1 = 64
    type HashDigestSize          SHA1 = 20
    type HashInternalContextSize SHA1 = 96
    hashBlockSize :: SHA1 -> Int
hashBlockSize  SHA1
_          = Int
64
    hashDigestSize :: SHA1 -> Int
hashDigestSize SHA1
_          = Int
20
    hashInternalContextSize :: SHA1 -> Int
hashInternalContextSize SHA1
_ = Int
96
    hashInternalInit :: Ptr (Context SHA1) -> IO ()
hashInternalInit          = forall a. Ptr (Context a) -> IO ()
c_sha1_init
    hashInternalUpdate :: Ptr (Context SHA1) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate        = forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_sha1_update
    hashInternalFinalize :: Ptr (Context SHA1) -> Ptr (Digest SHA1) -> IO ()
hashInternalFinalize      = forall a. Ptr (Context a) -> Ptr (Digest a) -> IO ()
c_sha1_finalize

instance HashAlgorithmPrefix SHA1 where
    hashInternalFinalizePrefix :: Ptr (Context SHA1)
-> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest SHA1) -> IO ()
hashInternalFinalizePrefix = forall a.
Ptr (Context a)
-> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest a) -> IO ()
c_sha1_finalize_prefix

foreign import ccall unsafe "crypton_sha1_init"
    c_sha1_init :: Ptr (Context a)-> IO ()

foreign import ccall "crypton_sha1_update"
    c_sha1_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

foreign import ccall unsafe "crypton_sha1_finalize"
    c_sha1_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

foreign import ccall "crypton_sha1_finalize_prefix"
    c_sha1_finalize_prefix :: Ptr (Context a) -> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest a) -> IO ()