-- |
-- Module      : Crypto.Hash.Skein256
-- License     : BSD-style
-- Maintainer  : Vincent Hanquez <vincent@snarc.org>
-- Stability   : experimental
-- Portability : unknown
--
-- Module containing the binding functions to work with the
-- Skein256 cryptographic hash.
--
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
module Crypto.Hash.Skein256
    (  Skein256_224 (..), Skein256_256 (..)
    ) where

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


-- | Skein256 (224 bits) cryptographic hash algorithm
data Skein256_224 = Skein256_224
    deriving (Int -> Skein256_224 -> ShowS
[Skein256_224] -> ShowS
Skein256_224 -> String
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instance HashAlgorithm Skein256_224 where
    type HashBlockSize           Skein256_224 = 32
    type HashDigestSize          Skein256_224 = 28
    type HashInternalContextSize Skein256_224 = 96
    hashBlockSize :: Skein256_224 -> Int
hashBlockSize  Skein256_224
_          = Int
32
    hashDigestSize :: Skein256_224 -> Int
hashDigestSize Skein256_224
_          = Int
28
    hashInternalContextSize :: Skein256_224 -> Int
hashInternalContextSize Skein256_224
_ = Int
96
    hashInternalInit :: Ptr (Context Skein256_224) -> IO ()
hashInternalInit Ptr (Context Skein256_224)
p        = Ptr (Context Skein256_224) -> Word32 -> IO ()
forall a. Ptr (Context a) -> Word32 -> IO ()
c_skein256_init Ptr (Context Skein256_224)
p Word32
224
    hashInternalUpdate :: Ptr (Context Skein256_224) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate        = Ptr (Context Skein256_224) -> Ptr Word8 -> Word32 -> IO ()
forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_skein256_update
    hashInternalFinalize :: Ptr (Context Skein256_224) -> Ptr (Digest Skein256_224) -> IO ()
hashInternalFinalize Ptr (Context Skein256_224)
p    = Ptr (Context Skein256_224)
-> Word32 -> Ptr (Digest Skein256_224) -> IO ()
forall a. Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
c_skein256_finalize Ptr (Context Skein256_224)
p Word32
224

-- | Skein256 (256 bits) cryptographic hash algorithm
data Skein256_256 = Skein256_256
    deriving (Int -> Skein256_256 -> ShowS
[Skein256_256] -> ShowS
Skein256_256 -> String
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instance HashAlgorithm Skein256_256 where
    type HashBlockSize           Skein256_256 = 32
    type HashDigestSize          Skein256_256 = 32
    type HashInternalContextSize Skein256_256 = 96
    hashBlockSize :: Skein256_256 -> Int
hashBlockSize  Skein256_256
_          = Int
32
    hashDigestSize :: Skein256_256 -> Int
hashDigestSize Skein256_256
_          = Int
32
    hashInternalContextSize :: Skein256_256 -> Int
hashInternalContextSize Skein256_256
_ = Int
96
    hashInternalInit :: Ptr (Context Skein256_256) -> IO ()
hashInternalInit Ptr (Context Skein256_256)
p        = Ptr (Context Skein256_256) -> Word32 -> IO ()
forall a. Ptr (Context a) -> Word32 -> IO ()
c_skein256_init Ptr (Context Skein256_256)
p Word32
256
    hashInternalUpdate :: Ptr (Context Skein256_256) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate        = Ptr (Context Skein256_256) -> Ptr Word8 -> Word32 -> IO ()
forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_skein256_update
    hashInternalFinalize :: Ptr (Context Skein256_256) -> Ptr (Digest Skein256_256) -> IO ()
hashInternalFinalize Ptr (Context Skein256_256)
p    = Ptr (Context Skein256_256)
-> Word32 -> Ptr (Digest Skein256_256) -> IO ()
forall a. Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
c_skein256_finalize Ptr (Context Skein256_256)
p Word32
256


foreign import ccall unsafe "crypton_skein256_init"
    c_skein256_init :: Ptr (Context a) -> Word32 -> IO ()

foreign import ccall "crypton_skein256_update"
    c_skein256_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

foreign import ccall unsafe "crypton_skein256_finalize"
    c_skein256_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()