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|
{-# LANGUAGE CPP #-}
-- |
-- Module : Crypto.Cipher.Blowfish
-- License : BSD-style
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
-- Stability : stable
-- Portability : good
--
module Crypto.Cipher.Blowfish
( Blowfish
, Blowfish64
, Blowfish128
, Blowfish256
, Blowfish448
) where
import Data.Byteable
import Crypto.Cipher.Types
import Crypto.Cipher.Blowfish.Primitive
-- | variable keyed blowfish state
newtype Blowfish = Blowfish Context
-- | 64 bit keyed blowfish state
newtype Blowfish64 = Blowfish64 Context
-- | 128 bit keyed blowfish state
newtype Blowfish128 = Blowfish128 Context
-- | 256 bit keyed blowfish state
newtype Blowfish256 = Blowfish256 Context
-- | 448 bit keyed blowfish state
newtype Blowfish448 = Blowfish448 Context
instance Cipher Blowfish where
cipherName _ = "blowfish"
cipherKeySize _ = KeySizeRange 6 56
cipherInit k = either error Blowfish $ initBlowfish (toBytes k)
instance BlockCipher Blowfish where
blockSize _ = 8
ecbEncrypt (Blowfish bf) = encrypt bf
ecbDecrypt (Blowfish bf) = decrypt bf
#define INSTANCE_CIPHER(CSTR, NAME, KEYSIZE) \
instance Cipher CSTR where \
{ cipherName _ = NAME \
; cipherKeySize _ = KeySizeFixed KEYSIZE \
; cipherInit k = either error CSTR $ initBlowfish (toBytes k) \
}; \
instance BlockCipher CSTR where \
{ blockSize _ = 8 \
; ecbEncrypt (CSTR bf) = encrypt bf \
; ecbDecrypt (CSTR bf) = decrypt bf \
};
INSTANCE_CIPHER(Blowfish64, "blowfish64", 8)
INSTANCE_CIPHER(Blowfish128, "blowfish128", 16)
INSTANCE_CIPHER(Blowfish256, "blowfish256", 32)
INSTANCE_CIPHER(Blowfish448, "blowfish448", 56)
|
