    -- |
    -- Module      : Crypto.Hash.Blake2bp
    -- License     : BSD-style
    -- Maintainer  : Vincent Hanquez <vincent@snarc.org>
    -- Stability   : experimental
    -- Portability : unknown
    --
    -- Module containing the binding functions to work with the
    -- Blake2bp cryptographic hash.
    --
    {-# LANGUAGE ForeignFunctionInterface #-}
    {-# LANGUAGE DeriveDataTypeable #-}
    {-# LANGUAGE DataKinds #-}
    {-# LANGUAGE TypeFamilies #-}
    module Crypto.Hash.Blake2bp
        (  Blake2bp_512 (..)
        ) where

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

    -- | Blake2bp (512 bits) cryptographic hash algorithm
    data Blake2bp_512 = Blake2bp_512
        deriving (Show,Data,Typeable)

    instance HashAlgorithm Blake2bp_512 where
        type HashBlockSize           Blake2bp_512 = 128
        type HashDigestSize          Blake2bp_512 = 64
        type HashInternalContextSize Blake2bp_512 = 1768
        hashBlockSize  _          = 128
        hashDigestSize _          = 64
        hashInternalContextSize _ = 1768
        hashInternalInit p        = c_blake2bp_init p 512
        hashInternalUpdate        = c_blake2bp_update
        hashInternalFinalize p    = c_blake2bp_finalize p 512

    foreign import ccall unsafe "cryptonite_blake2bp_init"
        c_blake2bp_init :: Ptr (Context a) -> Word32 -> IO ()

    foreign import ccall "cryptonite_blake2bp_update"
        c_blake2bp_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

    foreign import ccall unsafe "cryptonite_blake2bp_finalize"
        c_blake2bp_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()