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|
-- |
-- Module : Crypto.Cipher.Types.Utils
-- License : BSD-style
-- Maintainer : Vincent Hanquez <vincent@snarc.org>
-- Stability : Stable
-- Portability : Excellent
--
-- basic utility for cipher related stuff
--
module Crypto.Cipher.Types.Utils where
import Data.Bits (xor)
import Data.ByteString (ByteString)
import qualified Data.ByteString as B
chunk :: Int -> ByteString -> [ByteString]
chunk sz bs = split bs
where split b | B.length b <= sz = [b]
| otherwise =
let (b1, b2) = B.splitAt sz b
in b1 : split b2
bxor :: ByteString -> ByteString -> ByteString
bxor src dst = B.pack $ B.zipWith xor src dst
|
