    -- |
    -- Module      : Crypto.Hash.RIPEMD160
    -- License     : BSD-style
    -- Maintainer  : Vincent Hanquez <vincent@snarc.org>
    -- Stability   : experimental
    -- Portability : unknown
    --
    -- module containing the binding functions to work with the
    -- RIPEMD160 cryptographic hash.
    --
    {-# LANGUAGE ForeignFunctionInterface #-}
    module Crypto.Hash.RIPEMD160 ( RIPEMD160 (..) ) where

    import           Crypto.Hash.Types
    import           Foreign.Ptr (Ptr)
    import           Data.Word (Word8, Word32)

    -- | RIPEMD160 cryptographic hash algorithm
    data RIPEMD160 = RIPEMD160
        deriving (Show)

    instance HashAlgorithm RIPEMD160 where
        hashBlockSize  _          = 64
        hashDigestSize _          = 20
        hashInternalContextSize _ = 128
        hashInternalInit          = c_ripemd160_init
        hashInternalUpdate        = c_ripemd160_update
        hashInternalFinalize      = c_ripemd160_finalize

    foreign import ccall unsafe "cryptonite_ripemd160_init"
        c_ripemd160_init :: Ptr (Context a)-> IO ()

    foreign import ccall "cryptonite_ripemd160_update"
        c_ripemd160_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

    foreign import ccall unsafe "cryptonite_ripemd160_finalize"
        c_ripemd160_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()