db7c3bbb4f
use the typeclass for the lowest IO impure C bindings definitions, and define the pure interface as generic on top of this. At the same time define an Hash.IO interface to allow mutable manipulations of hash contextes when necessary. Use HashAlgorithm instead of HashFunction in the [PubKey] sections Tweak the HMAC, PBKDF2 functions to be more efficient and use the new interface
37 lines
1.2 KiB
Haskell
37 lines
1.2 KiB
Haskell
-- |
|
|
-- Module : Crypto.Hash.SHA256
|
|
-- License : BSD-style
|
|
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
|
|
-- Stability : experimental
|
|
-- Portability : unknown
|
|
--
|
|
-- module containing the binding functions to work with the
|
|
-- SHA256 cryptographic hash.
|
|
--
|
|
{-# LANGUAGE ForeignFunctionInterface #-}
|
|
module Crypto.Hash.SHA256 ( SHA256 (..) ) where
|
|
|
|
import Crypto.Hash.Types
|
|
import Foreign.Ptr (Ptr)
|
|
import Data.Word (Word8, Word32)
|
|
|
|
data SHA256 = SHA256
|
|
deriving (Show)
|
|
|
|
instance HashAlgorithm SHA256 where
|
|
hashBlockSize _ = 64
|
|
hashDigestSize _ = 32
|
|
hashInternalContextSize _ = 192
|
|
hashInternalInit = c_sha256_init
|
|
hashInternalUpdate = c_sha256_update
|
|
hashInternalFinalize = c_sha256_finalize
|
|
|
|
foreign import ccall unsafe "cryptonite_sha256.h cryptonite_sha256_init"
|
|
c_sha256_init :: Ptr (Context a)-> IO ()
|
|
|
|
foreign import ccall "cryptonite_sha256.h cryptonite_sha256_update"
|
|
c_sha256_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
|
|
|
|
foreign import ccall unsafe "cryptonite_sha256.h cryptonite_sha256_finalize"
|
|
c_sha256_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()
|