81 lines
2.7 KiB
Haskell
81 lines
2.7 KiB
Haskell
-- |
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-- Module : Crypto.Hash.Skein512
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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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-- Skein512 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.Skein512
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( Skein512_224 (..), Skein512_256 (..), Skein512_384 (..), Skein512_512 (..)
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) 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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-- | Skein512 (224 bits) cryptographic hash algorithm
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data Skein512_224 = Skein512_224
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deriving (Show,Data,Typeable)
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instance HashAlgorithm Skein512_224 where
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hashBlockSize _ = 64
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hashDigestSize _ = 28
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hashInternalContextSize _ = 160
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hashInternalInit p = c_skein512_init p 224
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hashInternalUpdate = c_skein512_update
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hashInternalFinalize p = c_skein512_finalize p 224
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-- | Skein512 (256 bits) cryptographic hash algorithm
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data Skein512_256 = Skein512_256
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deriving (Show,Data,Typeable)
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instance HashAlgorithm Skein512_256 where
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hashBlockSize _ = 64
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hashDigestSize _ = 32
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hashInternalContextSize _ = 160
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hashInternalInit p = c_skein512_init p 256
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hashInternalUpdate = c_skein512_update
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hashInternalFinalize p = c_skein512_finalize p 256
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-- | Skein512 (384 bits) cryptographic hash algorithm
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data Skein512_384 = Skein512_384
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deriving (Show,Data,Typeable)
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instance HashAlgorithm Skein512_384 where
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hashBlockSize _ = 64
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hashDigestSize _ = 48
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hashInternalContextSize _ = 160
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hashInternalInit p = c_skein512_init p 384
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hashInternalUpdate = c_skein512_update
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hashInternalFinalize p = c_skein512_finalize p 384
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-- | Skein512 (512 bits) cryptographic hash algorithm
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data Skein512_512 = Skein512_512
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deriving (Show,Data,Typeable)
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instance HashAlgorithm Skein512_512 where
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hashBlockSize _ = 64
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hashDigestSize _ = 64
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hashInternalContextSize _ = 160
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hashInternalInit p = c_skein512_init p 512
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hashInternalUpdate = c_skein512_update
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hashInternalFinalize p = c_skein512_finalize p 512
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foreign import ccall unsafe "cryptonite_skein512_init"
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c_skein512_init :: Ptr (Context a) -> Word32 -> IO ()
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foreign import ccall "cryptonite_skein512_update"
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c_skein512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
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foreign import ccall unsafe "cryptonite_skein512_finalize"
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c_skein512_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
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