1-- |
2-- Module      : Crypto.Hash.SHA1
3-- License     : BSD-style
4-- Maintainer  : Vincent Hanquez <vincent@snarc.org>
5-- Stability   : experimental
6-- Portability : unknown
7--
8-- Module containing the binding functions to work with the
9-- SHA1 cryptographic hash.
10--
11{-# LANGUAGE ForeignFunctionInterface #-}
12{-# LANGUAGE DeriveDataTypeable #-}
13{-# LANGUAGE DataKinds #-}
14{-# LANGUAGE TypeFamilies #-}
15module Crypto.Hash.SHA1 ( SHA1 (..) ) where
16
17import           Crypto.Hash.Types
18import           Foreign.Ptr (Ptr)
19import           Data.Data
20import           Data.Word (Word8, Word32)
21
22-- | SHA1 cryptographic hash algorithm
23data SHA1 = SHA1
24    deriving (Show,Data)
25
26instance HashAlgorithm SHA1 where
27    type HashBlockSize           SHA1 = 64
28    type HashDigestSize          SHA1 = 20
29    type HashInternalContextSize SHA1 = 96
30    hashBlockSize  _          = 64
31    hashDigestSize _          = 20
32    hashInternalContextSize _ = 96
33    hashInternalInit          = c_sha1_init
34    hashInternalUpdate        = c_sha1_update
35    hashInternalFinalize      = c_sha1_finalize
36
37foreign import ccall unsafe "cryptonite_sha1_init"
38    c_sha1_init :: Ptr (Context a)-> IO ()
39
40foreign import ccall "cryptonite_sha1_update"
41    c_sha1_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
42
43foreign import ccall unsafe "cryptonite_sha1_finalize"
44    c_sha1_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()
45