41 lines
1.3 KiB
Haskell
41 lines
1.3 KiB
Haskell
-- |
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-- Module : Crypto.Hash.SHA224
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-- License : BSD-style
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-- Maintainer : Vincent Hanquez <vincent@snarc.org>
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-- Stability : experimental
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-- Portability : unknown
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--
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-- module containing the binding functions to work with the
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-- SHA224 cryptographic hash.
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--
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{-# LANGUAGE ForeignFunctionInterface #-}
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{-# LANGUAGE DeriveDataTypeable #-}
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module Crypto.Hash.SHA224 ( SHA224 (..) ) where
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import Crypto.Hash.Types
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import Foreign.Ptr (Ptr)
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import Data.Data
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import Data.Typeable
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import Data.Word (Word8, Word32)
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-- | SHA224 cryptographic hash algorithm
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data SHA224 = SHA224
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deriving (Show,Data,Typeable)
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instance HashAlgorithm SHA224 where
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hashBlockSize _ = 64
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hashDigestSize _ = 28
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hashInternalContextSize _ = 192
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hashInternalInit = c_sha224_init
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hashInternalUpdate = c_sha224_update
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hashInternalFinalize = c_sha224_finalize
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foreign import ccall unsafe "cryptonite_sha224_init"
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c_sha224_init :: Ptr (Context a)-> IO ()
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foreign import ccall "cryptonite_sha224_update"
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c_sha224_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
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foreign import ccall unsafe "cryptonite_sha224_finalize"
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c_sha224_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()
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