1-- |
2-- Module      : Crypto.Hash.Skein512
3-- License     : BSD-style
4-- Maintainer  : Vincent Hanquez <vincent@snarc.org>
5-- Stability   : experimental
6-- Portability : unknown
7--
8-- Module containing the binding functions to work with the
9-- Skein512 cryptographic hash.
10--
11{-# LANGUAGE ForeignFunctionInterface #-}
12{-# LANGUAGE DeriveDataTypeable #-}
13{-# LANGUAGE DataKinds #-}
14{-# LANGUAGE TypeFamilies #-}
15module Crypto.Hash.Skein512
16    (  Skein512_224 (..), Skein512_256 (..), Skein512_384 (..), Skein512_512 (..)
17    ) where
18
19import           Crypto.Hash.Types
20import           Foreign.Ptr (Ptr)
21import           Data.Data
22import           Data.Word (Word8, Word32)
23
24
25-- | Skein512 (224 bits) cryptographic hash algorithm
26data Skein512_224 = Skein512_224
27    deriving (Show,Data)
28
29instance HashAlgorithm Skein512_224 where
30    type HashBlockSize           Skein512_224 = 64
31    type HashDigestSize          Skein512_224 = 28
32    type HashInternalContextSize Skein512_224 = 160
33    hashBlockSize  _          = 64
34    hashDigestSize _          = 28
35    hashInternalContextSize _ = 160
36    hashInternalInit p        = c_skein512_init p 224
37    hashInternalUpdate        = c_skein512_update
38    hashInternalFinalize p    = c_skein512_finalize p 224
39
40-- | Skein512 (256 bits) cryptographic hash algorithm
41data Skein512_256 = Skein512_256
42    deriving (Show,Data)
43
44instance HashAlgorithm Skein512_256 where
45    type HashBlockSize           Skein512_256 = 64
46    type HashDigestSize          Skein512_256 = 32
47    type HashInternalContextSize Skein512_256 = 160
48    hashBlockSize  _          = 64
49    hashDigestSize _          = 32
50    hashInternalContextSize _ = 160
51    hashInternalInit p        = c_skein512_init p 256
52    hashInternalUpdate        = c_skein512_update
53    hashInternalFinalize p    = c_skein512_finalize p 256
54
55-- | Skein512 (384 bits) cryptographic hash algorithm
56data Skein512_384 = Skein512_384
57    deriving (Show,Data)
58
59instance HashAlgorithm Skein512_384 where
60    type HashBlockSize           Skein512_384 = 64
61    type HashDigestSize          Skein512_384 = 48
62    type HashInternalContextSize Skein512_384 = 160
63    hashBlockSize  _          = 64
64    hashDigestSize _          = 48
65    hashInternalContextSize _ = 160
66    hashInternalInit p        = c_skein512_init p 384
67    hashInternalUpdate        = c_skein512_update
68    hashInternalFinalize p    = c_skein512_finalize p 384
69
70-- | Skein512 (512 bits) cryptographic hash algorithm
71data Skein512_512 = Skein512_512
72    deriving (Show,Data)
73
74instance HashAlgorithm Skein512_512 where
75    type HashBlockSize           Skein512_512 = 64
76    type HashDigestSize          Skein512_512 = 64
77    type HashInternalContextSize Skein512_512 = 160
78    hashBlockSize  _          = 64
79    hashDigestSize _          = 64
80    hashInternalContextSize _ = 160
81    hashInternalInit p        = c_skein512_init p 512
82    hashInternalUpdate        = c_skein512_update
83    hashInternalFinalize p    = c_skein512_finalize p 512
84
85
86foreign import ccall unsafe "cryptonite_skein512_init"
87    c_skein512_init :: Ptr (Context a) -> Word32 -> IO ()
88
89foreign import ccall "cryptonite_skein512_update"
90    c_skein512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
91
92foreign import ccall unsafe "cryptonite_skein512_finalize"
93    c_skein512_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
94