{-# LANGUAGE DataKinds #-}
{-# LANGUAGE DeriveDataTypeable #-}
{-# LANGUAGE ForeignFunctionInterface #-}
{-# LANGUAGE KindSignatures #-}
{-# LANGUAGE ScopedTypeVariables #-}
{-# LANGUAGE TypeFamilies #-}
{-# LANGUAGE TypeOperators #-}
{-# LANGUAGE UndecidableInstances #-}

-- |
-- Module      : Crypto.Hash.Skein512
-- License     : BSD-style
-- Maintainer  : Vincent Hanquez <vincent@snarc.org>
-- Stability   : experimental
-- Portability : unknown
--
-- Module containing the binding functions to work with the
-- Skein512 cryptographic hash.
module Crypto.Hash.Skein512 (
    Skein512 (..),
    Skein512_224 (..),
    Skein512_256 (..),
    Skein512_384 (..),
    Skein512_512 (..),
) where

import Crypto.Hash.Types
import Crypto.Internal.Nat
import Data.Data
import Data.Word (Word32, Word8)
import Foreign.Ptr (Ptr)
import GHC.TypeLits (KnownNat, Nat, type (+))

-- | Skein512 (224 bits) cryptographic hash algorithm
data Skein512_224 = Skein512_224
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instance HashAlgorithm Skein512_224 where
    type HashBlockSize Skein512_224 = 64
    type HashDigestSize Skein512_224 = 28
    type HashInternalContextSize Skein512_224 = 160
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hashBlockSize Skein512_224
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64
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hashDigestSize Skein512_224
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hashInternalContextSize Skein512_224
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160
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224
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224

-- | Skein512 (256 bits) cryptographic hash algorithm
data Skein512_256 = Skein512_256
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instance HashAlgorithm Skein512_256 where
    type HashBlockSize Skein512_256 = 64
    type HashDigestSize Skein512_256 = 32
    type HashInternalContextSize Skein512_256 = 160
    hashBlockSize :: Skein512_256 -> Int
hashBlockSize Skein512_256
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64
    hashDigestSize :: Skein512_256 -> Int
hashDigestSize Skein512_256
_ = Int
32
    hashInternalContextSize :: Skein512_256 -> Int
hashInternalContextSize Skein512_256
_ = Int
160
    hashInternalInit :: Ptr (Context Skein512_256) -> IO ()
hashInternalInit Ptr (Context Skein512_256)
p = Ptr (Context Skein512_256) -> Word32 -> IO ()
forall a. Ptr (Context a) -> Word32 -> IO ()
c_skein512_init Ptr (Context Skein512_256)
p Word32
256
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c_skein512_update
    hashInternalFinalize :: Ptr (Context Skein512_256) -> Ptr (Digest Skein512_256) -> IO ()
hashInternalFinalize Ptr (Context Skein512_256)
p = Ptr (Context Skein512_256)
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c_skein512_finalize Ptr (Context Skein512_256)
p Word32
256

-- | Skein512 (384 bits) cryptographic hash algorithm
data Skein512_384 = Skein512_384
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[Skein512_384] -> ShowS
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instance HashAlgorithm Skein512_384 where
    type HashBlockSize Skein512_384 = 64
    type HashDigestSize Skein512_384 = 48
    type HashInternalContextSize Skein512_384 = 160
    hashBlockSize :: Skein512_384 -> Int
hashBlockSize Skein512_384
_ = Int
64
    hashDigestSize :: Skein512_384 -> Int
hashDigestSize Skein512_384
_ = Int
48
    hashInternalContextSize :: Skein512_384 -> Int
hashInternalContextSize Skein512_384
_ = Int
160
    hashInternalInit :: Ptr (Context Skein512_384) -> IO ()
hashInternalInit Ptr (Context Skein512_384)
p = Ptr (Context Skein512_384) -> Word32 -> IO ()
forall a. Ptr (Context a) -> Word32 -> IO ()
c_skein512_init Ptr (Context Skein512_384)
p Word32
384
    hashInternalUpdate :: Ptr (Context Skein512_384) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate = Ptr (Context Skein512_384) -> Ptr Word8 -> Word32 -> IO ()
forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_skein512_update
    hashInternalFinalize :: Ptr (Context Skein512_384) -> Ptr (Digest Skein512_384) -> IO ()
hashInternalFinalize Ptr (Context Skein512_384)
p = Ptr (Context Skein512_384)
-> Word32 -> Ptr (Digest Skein512_384) -> IO ()
forall a. Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
c_skein512_finalize Ptr (Context Skein512_384)
p Word32
384

-- | Skein512 (512 bits) cryptographic hash algorithm
data Skein512_512 = Skein512_512
    deriving (Int -> Skein512_512 -> ShowS
[Skein512_512] -> ShowS
Skein512_512 -> String
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-> ([Skein512_512] -> ShowS)
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Data)

instance HashAlgorithm Skein512_512 where
    type HashBlockSize Skein512_512 = 64
    type HashDigestSize Skein512_512 = 64
    type HashInternalContextSize Skein512_512 = 160
    hashBlockSize :: Skein512_512 -> Int
hashBlockSize Skein512_512
_ = Int
64
    hashDigestSize :: Skein512_512 -> Int
hashDigestSize Skein512_512
_ = Int
64
    hashInternalContextSize :: Skein512_512 -> Int
hashInternalContextSize Skein512_512
_ = Int
160
    hashInternalInit :: Ptr (Context Skein512_512) -> IO ()
hashInternalInit Ptr (Context Skein512_512)
p = Ptr (Context Skein512_512) -> Word32 -> IO ()
forall a. Ptr (Context a) -> Word32 -> IO ()
c_skein512_init Ptr (Context Skein512_512)
p Word32
512
    hashInternalUpdate :: Ptr (Context Skein512_512) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate = Ptr (Context Skein512_512) -> Ptr Word8 -> Word32 -> IO ()
forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_skein512_update
    hashInternalFinalize :: Ptr (Context Skein512_512) -> Ptr (Digest Skein512_512) -> IO ()
hashInternalFinalize Ptr (Context Skein512_512)
p = Ptr (Context Skein512_512)
-> Word32 -> Ptr (Digest Skein512_512) -> IO ()
forall a. Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
c_skein512_finalize Ptr (Context Skein512_512)
p Word32
512

-- | Skein512 with the digest size given as a type parameter of kind 'Nat',
-- in bits.  @t'Skein512' 512@ is @t'Skein512_512'@; the sizes with a type of
-- their own
-- above are there for their names, and this one also takes the sizes that
-- have none.
--
-- A size that is not a whole number of bytes is rounded up to the next one,
-- as the implementation underneath does.
--
-- The output is produced in counter mode, a block of it per Threefish call,
-- so one large digest is a good deal cheaper than the same number of bytes
-- taken from repeated small ones: on an Apple M4, 512 KiB arrives at 947 MB/s
-- in one digest against 172 MB/s as 8192 separate @t'Skein512_512'@ ones.
--
-- Note the digest size goes into the configuration block, so it changes the
-- value the message is hashed from: a longer digest is /not/ an extension of
-- a shorter one.  That is the opposite of how t'Crypto.Hash.SHAKE.SHAKE128'
-- behaves.
data Skein512 (bitlen :: Nat) = Skein512
    deriving (Int -> Skein512 bitlen -> ShowS
[Skein512 bitlen] -> ShowS
Skein512 bitlen -> String
(Int -> Skein512 bitlen -> ShowS)
-> (Skein512 bitlen -> String)
-> ([Skein512 bitlen] -> ShowS)
-> Show (Skein512 bitlen)
forall (bitlen :: Nat). Int -> Skein512 bitlen -> ShowS
forall (bitlen :: Nat). [Skein512 bitlen] -> ShowS
forall (bitlen :: Nat). Skein512 bitlen -> String
forall a.
(Int -> a -> ShowS) -> (a -> String) -> ([a] -> ShowS) -> Show a
$cshowsPrec :: forall (bitlen :: Nat). Int -> Skein512 bitlen -> ShowS
showsPrec :: Int -> Skein512 bitlen -> ShowS
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show :: Skein512 bitlen -> String
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showList :: [Skein512 bitlen] -> ShowS
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-> Data (Skein512 bitlen)
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(KnownNat bitlen, Typeable t) =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Skein512 bitlen))
forall a.
Typeable a =>
(forall (c :: * -> *).
 (forall d b. Data d => c (d -> b) -> d -> c b)
 -> (forall g. g -> c g) -> a -> c a)
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    -> (forall r. r -> c r) -> Constr -> c a)
-> (a -> Constr)
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    (forall d. Data d => c (t d)) -> Maybe (c a))
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    (forall d e. (Data d, Data e) => c (t d e)) -> Maybe (c a))
-> ((forall b. Data b => b -> b) -> a -> a)
-> (forall r r'.
    (r -> r' -> r) -> r -> (forall d. Data d => d -> r') -> a -> r)
-> (forall r r'.
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-> (forall u. (forall d. Data d => d -> u) -> a -> [u])
-> (forall u. Int -> (forall d. Data d => d -> u) -> a -> u)
-> (forall (m :: * -> *).
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    (forall d. Data d => d -> m d) -> a -> m a)
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    (forall d. Data d => d -> m d) -> a -> m a)
-> (forall (m :: * -> *).
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    (forall d. Data d => d -> m d) -> a -> m a)
-> Data a
forall u.
Int -> (forall d. Data d => d -> u) -> Skein512 bitlen -> u
forall u. (forall d. Data d => d -> u) -> Skein512 bitlen -> [u]
forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Skein512 bitlen -> r
forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Skein512 bitlen -> r
forall (m :: * -> *).
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(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
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-> Skein512 bitlen -> m (Skein512 bitlen)
forall (c :: * -> *).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Skein512 bitlen)
forall (c :: * -> *).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Skein512 bitlen -> c (Skein512 bitlen)
forall (t :: * -> *) (c :: * -> *).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c (Skein512 bitlen))
forall (t :: * -> * -> *) (c :: * -> *).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Skein512 bitlen))
$cgfoldl :: forall (bitlen :: Nat) (c :: * -> *).
KnownNat bitlen =>
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Skein512 bitlen -> c (Skein512 bitlen)
gfoldl :: forall (c :: * -> *).
(forall d b. Data d => c (d -> b) -> d -> c b)
-> (forall g. g -> c g) -> Skein512 bitlen -> c (Skein512 bitlen)
$cgunfold :: forall (bitlen :: Nat) (c :: * -> *).
KnownNat bitlen =>
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Skein512 bitlen)
gunfold :: forall (c :: * -> *).
(forall b r. Data b => c (b -> r) -> c r)
-> (forall r. r -> c r) -> Constr -> c (Skein512 bitlen)
$ctoConstr :: forall (bitlen :: Nat).
KnownNat bitlen =>
Skein512 bitlen -> Constr
toConstr :: Skein512 bitlen -> Constr
$cdataTypeOf :: forall (bitlen :: Nat).
KnownNat bitlen =>
Skein512 bitlen -> DataType
dataTypeOf :: Skein512 bitlen -> DataType
$cdataCast1 :: forall (bitlen :: Nat) (t :: * -> *) (c :: * -> *).
(KnownNat bitlen, Typeable t) =>
(forall d. Data d => c (t d)) -> Maybe (c (Skein512 bitlen))
dataCast1 :: forall (t :: * -> *) (c :: * -> *).
Typeable t =>
(forall d. Data d => c (t d)) -> Maybe (c (Skein512 bitlen))
$cdataCast2 :: forall (bitlen :: Nat) (t :: * -> * -> *) (c :: * -> *).
(KnownNat bitlen, Typeable t) =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Skein512 bitlen))
dataCast2 :: forall (t :: * -> * -> *) (c :: * -> *).
Typeable t =>
(forall d e. (Data d, Data e) => c (t d e))
-> Maybe (c (Skein512 bitlen))
$cgmapT :: forall (bitlen :: Nat).
KnownNat bitlen =>
(forall b. Data b => b -> b) -> Skein512 bitlen -> Skein512 bitlen
gmapT :: (forall b. Data b => b -> b) -> Skein512 bitlen -> Skein512 bitlen
$cgmapQl :: forall (bitlen :: Nat) r r'.
KnownNat bitlen =>
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Skein512 bitlen -> r
gmapQl :: forall r r'.
(r -> r' -> r)
-> r -> (forall d. Data d => d -> r') -> Skein512 bitlen -> r
$cgmapQr :: forall (bitlen :: Nat) r r'.
KnownNat bitlen =>
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Skein512 bitlen -> r
gmapQr :: forall r r'.
(r' -> r -> r)
-> r -> (forall d. Data d => d -> r') -> Skein512 bitlen -> r
$cgmapQ :: forall (bitlen :: Nat) u.
KnownNat bitlen =>
(forall d. Data d => d -> u) -> Skein512 bitlen -> [u]
gmapQ :: forall u. (forall d. Data d => d -> u) -> Skein512 bitlen -> [u]
$cgmapQi :: forall (bitlen :: Nat) u.
KnownNat bitlen =>
Int -> (forall d. Data d => d -> u) -> Skein512 bitlen -> u
gmapQi :: forall u.
Int -> (forall d. Data d => d -> u) -> Skein512 bitlen -> u
$cgmapM :: forall (bitlen :: Nat) (m :: * -> *).
(KnownNat bitlen, Monad m) =>
(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
gmapM :: forall (m :: * -> *).
Monad m =>
(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
$cgmapMp :: forall (bitlen :: Nat) (m :: * -> *).
(KnownNat bitlen, MonadPlus m) =>
(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
gmapMp :: forall (m :: * -> *).
MonadPlus m =>
(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
$cgmapMo :: forall (bitlen :: Nat) (m :: * -> *).
(KnownNat bitlen, MonadPlus m) =>
(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
gmapMo :: forall (m :: * -> *).
MonadPlus m =>
(forall d. Data d => d -> m d)
-> Skein512 bitlen -> m (Skein512 bitlen)
Data)

instance KnownNat bitlen => HashAlgorithm (Skein512 bitlen) where
    type HashBlockSize (Skein512 bitlen) = 64
    type HashDigestSize (Skein512 bitlen) = Div8 (bitlen + 7)
    type HashInternalContextSize (Skein512 bitlen) = 160
    hashBlockSize :: Skein512 bitlen -> Int
hashBlockSize Skein512 bitlen
_ = Int
64
    hashDigestSize :: Skein512 bitlen -> Int
hashDigestSize Skein512 bitlen
_ = Proxy bitlen -> Int
forall (bitlen :: Nat) a (proxy :: Nat -> *).
(KnownNat bitlen, Num a) =>
proxy bitlen -> a
byteLen (Proxy bitlen
forall {k} (t :: k). Proxy t
Proxy :: Proxy bitlen)
    hashInternalContextSize :: Skein512 bitlen -> Int
hashInternalContextSize Skein512 bitlen
_ = Int
160
    hashInternalInit :: Ptr (Context (Skein512 bitlen)) -> IO ()
hashInternalInit Ptr (Context (Skein512 bitlen))
p = Ptr (Context (Skein512 bitlen)) -> Word32 -> IO ()
forall a. Ptr (Context a) -> Word32 -> IO ()
c_skein512_init Ptr (Context (Skein512 bitlen))
p (Proxy bitlen -> Word32
forall (bitlen :: Nat) a (proxy :: Nat -> *).
(KnownNat bitlen, Num a) =>
proxy bitlen -> a
integralNatVal (Proxy bitlen
forall {k} (t :: k). Proxy t
Proxy :: Proxy bitlen))
    hashInternalUpdate :: Ptr (Context (Skein512 bitlen)) -> Ptr Word8 -> Word32 -> IO ()
hashInternalUpdate = Ptr (Context (Skein512 bitlen)) -> Ptr Word8 -> Word32 -> IO ()
forall a. Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()
c_skein512_update
    hashInternalFinalize :: Ptr (Context (Skein512 bitlen))
-> Ptr (Digest (Skein512 bitlen)) -> IO ()
hashInternalFinalize Ptr (Context (Skein512 bitlen))
p = Ptr (Context (Skein512 bitlen))
-> Word32 -> Ptr (Digest (Skein512 bitlen)) -> IO ()
forall a. Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()
c_skein512_finalize Ptr (Context (Skein512 bitlen))
p (Proxy bitlen -> Word32
forall (bitlen :: Nat) a (proxy :: Nat -> *).
(KnownNat bitlen, Num a) =>
proxy bitlen -> a
integralNatVal (Proxy bitlen
forall {k} (t :: k). Proxy t
Proxy :: Proxy bitlen))

foreign import ccall unsafe "crypton_skein512_init"
    c_skein512_init :: Ptr (Context a) -> Word32 -> IO ()

foreign import ccall "crypton_skein512_update"
    c_skein512_update :: Ptr (Context a) -> Ptr Word8 -> Word32 -> IO ()

foreign import ccall unsafe "crypton_skein512_finalize"
    c_skein512_finalize :: Ptr (Context a) -> Word32 -> Ptr (Digest a) -> IO ()