42 lines
1.2 KiB
Haskell
42 lines
1.2 KiB
Haskell
-- |
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-- Module : Crypto.Hash.Blake2s
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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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-- Blake2s cryptographic hash.
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--
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{-# LANGUAGE ForeignFunctionInterface #-}
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module Crypto.Hash.Blake2s
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( Blake2s_256 (..)
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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.Word (Word8, Word32)
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-- | Blake2s (256 bits) cryptographic hash algorithm
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data Blake2s_256 = Blake2s_256
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deriving (Show)
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instance HashAlgorithm Blake2s_256 where
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hashBlockSize _ = 64
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hashDigestSize _ = 32
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hashInternalContextSize _ = 185
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hashInternalInit p = c_blake2s_init p 256
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hashInternalUpdate = c_blake2s_update
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hashInternalFinalize p = c_blake2s_finalize p 256
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foreign import ccall unsafe "cryptonite_blake2s_init"
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c_blake2s_init :: Ptr (Context a) -> Word32 -> IO ()
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foreign import ccall "cryptonite_blake2s_update"
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c_blake2s_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
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foreign import ccall unsafe "cryptonite_blake2s_finalize"
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c_blake2s_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
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