-- |
-- Module      : Crypto.Hash.SHA512
-- License     : BSD-style
-- Maintainer  : Vincent Hanquez <vincent@snarc.org>
-- Stability   : experimental
-- Portability : unknown
--
-- Module containing the binding functions to work with the
-- SHA512 cryptographic hash.
--
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE DataKinds #-}
{-# LANGUAGE TypeFamilies #-}
module Crypto.Hash.SHA512 ( SHA512 (..) ) where

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

-- | SHA512 cryptographic hash algorithm
data SHA512 = SHA512
    deriving (Int -> SHA512 -> ShowS
[SHA512] -> ShowS
SHA512 -> String
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showsPrec :: Int -> SHA512 -> ShowS
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show :: SHA512 -> String
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showList :: [SHA512] -> ShowS
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Data)

instance HashAlgorithm SHA512 where
    type HashBlockSize           SHA512 = 128
    type HashDigestSize          SHA512 = 64
    type HashInternalContextSize SHA512 = 256
    hashBlockSize :: SHA512 -> Int
hashBlockSize  SHA512
_          = Int
128
    hashDigestSize :: SHA512 -> Int
hashDigestSize SHA512
_          = Int
64
    hashInternalContextSize :: SHA512 -> Int
hashInternalContextSize SHA512
_ = Int
256
    hashInternalInit :: Ptr (Context SHA512) -> IO ()
hashInternalInit          = Ptr (Context SHA512) -> IO ()
forall a. Ptr (Context a) -> IO ()
c_sha512_init
    hashInternalUpdate :: Ptr (Context SHA512) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate        = Ptr (Context SHA512) -> Ptr Word8 -> Word32 -> IO ()
forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_sha512_update
    hashInternalFinalize :: Ptr (Context SHA512) -> Ptr (Digest SHA512) -> IO ()
hashInternalFinalize      = Ptr (Context SHA512) -> Ptr (Digest SHA512) -> IO ()
forall a. Ptr (Context a) -> Ptr (Digest a) -> IO ()
c_sha512_finalize

instance HashAlgorithmPrefix SHA512 where
    hashInternalFinalizePrefix :: Ptr (Context SHA512)
-> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest SHA512) -> IO ()
hashInternalFinalizePrefix = Ptr (Context SHA512)
-> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest SHA512) -> IO ()
forall a.
Ptr (Context a)
-> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest a) -> IO ()
c_sha512_finalize_prefix

foreign import ccall unsafe "crypton_sha512_init"
    c_sha512_init :: Ptr (Context a)-> IO ()

foreign import ccall "crypton_sha512_update"
    c_sha512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

foreign import ccall unsafe "crypton_sha512_finalize"
    c_sha512_finalize :: Ptr (Context a) -> Ptr (Digest a) -> IO ()

foreign import ccall "crypton_sha512_finalize_prefix"
    c_sha512_finalize_prefix :: Ptr (Context a) -> Ptr Word8 -> Word32 -> Word32 -> Ptr (Digest a) -> IO ()