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