diff --git a/LICENSE b/LICENSE new file mode 100644 --- /dev/null +++ b/LICENSE @@ -0,0 +1,30 @@ +Copyright (c) Thomas DuBuisson + +All rights reserved. + +Redistribution and use in source and binary forms, with or without +modification, are permitted provided that the following conditions +are met: + +1. Redistributions of source code must retain the above copyright + notice, this list of conditions and the following disclaimer. + +2. Redistributions in binary form must reproduce the above copyright + notice, this list of conditions and the following disclaimer in the + documentation and/or other materials provided with the distribution. + +3. Neither the name of the author nor the names of his contributors + may be used to endorse or promote products derived from this software + without specific prior written permission. + +THIS SOFTWARE IS PROVIDED BY THE CONTRIBUTORS ``AS IS'' AND ANY EXPRESS +OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED +WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE +DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE FOR +ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL +DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS +OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) +HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, +STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN +ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE +POSSIBILITY OF SUCH DAMAGE. diff --git a/Setup.lhs b/Setup.lhs new file mode 100644 --- /dev/null +++ b/Setup.lhs @@ -0,0 +1,3 @@ +#!/usr/bin/env runhaskell +> import Distribution.Simple +> main = defaultMain diff --git a/pureMD5.cabal b/pureMD5.cabal new file mode 100644 --- /dev/null +++ b/pureMD5.cabal @@ -0,0 +1,26 @@ +name: pureMD5 +version: 0.1.0 +license: BSD3 +license-file: LICENSE +author: Thomas DuBuisson +maintainer: Thomas DuBuisson +description: A rolled (concise yet inefficient) and unrolled (more efficient, much less concise) + version of MD5 purely in Haskell. Only the unrolled is exported. +synopsis: MD5 implementations that should become part of a ByteString Crypto package. +category: Data, Codes +stability: stable +build-type: Simple +cabal-version: >= 1.2 +tested-with: GHC ==6.8.1 + +Flag small_base + Description: Choose the split-up base package. + +Library + if flag(small_base) + Build-Depends: base >= 3, bytestring >= 0.9, binary >= 0.4.0 + else + Build-Depends: base >= 3, bytestring, binary >= 0.3.0 + hs-source-dirs: src + exposed-modules: Data.Digest.MD5 + ghc-options: -O2 -funfolding-use-threshold66 -funfolding-creation-threshold66 -funfolding-update-in-place -fvia-c -optc -funroll-all-loops -optc-ffast-math -fexcess-precision diff --git a/src/Data/Digest/MD5.hs b/src/Data/Digest/MD5.hs new file mode 100644 --- /dev/null +++ b/src/Data/Digest/MD5.hs @@ -0,0 +1,236 @@ +{-# OPTIONS_GHC -fbang-patterns -funbox-strict-fields -fvia-c -optc-funroll-all-loops -optc-O3 #-} +-- +-- Module : Crypto.MD5 +-- License : BSD3 +-- Maintainer : Thomas.DuBuisson@mail.google.com +-- Stability : experimental +-- Portability : portable, requires bang patterns and ByteString +-- Tested with : GHC-6.8.1 +-- + +module Data.Digest.MD5 + (md5 + ,md5InitialContext + ,md5Update + ,md5Finalize + ) where + +import qualified Data.ByteString as B +import qualified Data.ByteString.Lazy as L +import Data.ByteString.Internal +import Data.Bits +import Data.List +import Data.Int (Int64) +import Data.Word +import Foreign.Storable +import Foreign.Ptr +import Foreign.ForeignPtr +import System.IO +import Data.Binary +import Data.Binary.Get +import Data.Binary.Put +import Numeric + +blockSize = 512 -- Block size in bits +blockSizeBytes = blockSize `div` 8 +blockSizeBytesI64 = (fromIntegral blockSizeBytes) :: Int64 +blockSizeBits = (fromIntegral blockSize) :: Word64 + +data MD5Partial = MD5Par !Word32 !Word32 !Word32 !Word32 + +-- | The type MD5 intermediate and final results +data MD5Context = MD5Ctx { mdPartial :: !MD5Partial, + mdLeftOver :: ByteString, + mdTotalLen :: !Word64 + } + +md5InitialContext = MD5Ctx (MD5Par h0 h1 h2 h3) B.empty 0 +h0 = 0x67452301 +h1 = 0xEFCDAB89 +h2 = 0x98BADCFE +h3 = 0x10325476 + +-- | Processes the lazy ByteString and return the md5 digest +md5 :: L.ByteString -> MD5Context +md5 bs = md5Finalize $ md5Update md5InitialContext bs + +md5Finalize :: MD5Context -> MD5Context +md5Finalize !ctx@(MD5Ctx (MD5Par a b c d) rem !totLen) = + let totLen' = (totLen + 8*fromIntegral l) :: Word64 + padBS = L.toChunks $ runPut ( do + putWord8 0x80 + mapM_ putWord8 (replicate lenZeroPad 0) + putWord64le totLen' ) + in md5Update ctx (L.fromChunks (rem:padBS)) + + where + l = B.length rem + lenZeroPad = if (l+1) <= blockSizeBytes - 8 + then (blockSizeBytes - 8) - (l+1) + else (2*blockSizeBytes - 8) - (l+1) +{-# INLINE md5Finalize #-} + +md5Update :: MD5Context -> L.ByteString -> MD5Context +md5Update !ctx bsLazy = + let blks = block bsLazy + in foldl' performMD5Update ctx blks +{-# INLINE md5Update #-} + +block :: L.ByteString -> [ByteString] +block bs = + if rest /= L.empty + then conv top : block rest + else [conv top] + where + conv = B.concat . L.toChunks + (top,rest) = L.splitAt blockSizeBytesI64 bs +{-# INLINE block #-} + +-- Assumes ByteString length == blockSizeBytes, will fold the +-- context across calls to applyMD5Rounds. +performMD5Update :: MD5Context -> ByteString -> MD5Context +performMD5Update !ctx@(MD5Ctx !par@(MD5Par !a !b !c !d) _ !len) !bs = + let MD5Par a' b' c' d' = applyMD5Rounds par bs + in if B.length bs == blockSizeBytes + then MD5Ctx { + mdPartial = MD5Par (a' + a) (b' + b) (c' + c) (d' + d), + mdLeftOver = B.empty, + mdTotalLen = len + blockSizeBits + } + else ctx { mdLeftOver = bs } + +applyMD5Rounds :: MD5Partial -> ByteString -> MD5Partial +applyMD5Rounds par@(MD5Par a b c d) w = + let -- Round 1 + !r0 = ff a b c d (w!!0) 7 3614090360 + !r1 = ff d r0 b c (w!!1) 12 3905402710 + !r2 = ff c r1 r0 b (w!!2) 17 606105819 + !r3 = ff b r2 r1 r0 (w!!3) 22 3250441966 + !r4 = ff r0 r3 r2 r1 (w!!4) 7 4118548399 + !r5 = ff r1 r4 r3 r2 (w!!5) 12 1200080426 + !r6 = ff r2 r5 r4 r3 (w!!6) 17 2821735955 + !r7 = ff r3 r6 r5 r4 (w!!7) 22 4249261313 + !r8 = ff r4 r7 r6 r5 (w!!8) 7 1770035416 + !r9 = ff r5 r8 r7 r6 (w!!9) 12 2336552879 + !r10 = ff r6 r9 r8 r7 (w!!10) 17 4294925233 + !r11 = ff r7 r10 r9 r8 (w!!11) 22 2304563134 + !r12 = ff r8 r11 r10 r9 (w!!12) 7 1804603682 + !r13 = ff r9 r12 r11 r10 (w!!13) 12 4254626195 + !r14 = ff r10 r13 r12 r11 (w!!14) 17 2792965006 + !r15 = ff r11 r14 r13 r12 (w!!15) 22 1236535329 + -- Round 2 + !r16 = gg r12 r15 r14 r13 (w!!1) 5 4129170786 + !r17 = gg r13 r16 r15 r14 (w!!6) 9 3225465664 + !r18 = gg r14 r17 r16 r15 (w!!11) 14 643717713 + !r19 = gg r15 r18 r17 r16 (w!!0) 20 3921069994 + !r20 = gg r16 r19 r18 r17 (w!!5) 5 3593408605 + !r21 = gg r17 r20 r19 r18 (w!!10) 9 38016083 + !r22 = gg r18 r21 r20 r19 (w!!15) 14 3634488961 + !r23 = gg r19 r22 r21 r20 (w!!4) 20 3889429448 + !r24 = gg r20 r23 r22 r21 (w!!9) 5 568446438 + !r25 = gg r21 r24 r23 r22 (w!!14) 9 3275163606 + !r26 = gg r22 r25 r24 r23 (w!!3) 14 4107603335 + !r27 = gg r23 r26 r25 r24 (w!!8) 20 1163531501 + !r28 = gg r24 r27 r26 r25 (w!!13) 5 2850285829 + !r29 = gg r25 r28 r27 r26 (w!!2) 9 4243563512 + !r30 = gg r26 r29 r28 r27 (w!!7) 14 1735328473 + !r31 = gg r27 r30 r29 r28 (w!!12) 20 2368359562 + -- Round 3 + !r32 = hh r28 r31 r30 r29 (w!!5) 4 4294588738 + !r33 = hh r29 r32 r31 r30 (w!!8) 11 2272392833 + !r34 = hh r30 r33 r32 r31 (w!!11) 16 1839030562 + !r35 = hh r31 r34 r33 r32 (w!!14) 23 4259657740 + !r36 = hh r32 r35 r34 r33 (w!!1) 4 2763975236 + !r37 = hh r33 r36 r35 r34 (w!!4) 11 1272893353 + !r38 = hh r34 r37 r36 r35 (w!!7) 16 4139469664 + !r39 = hh r35 r38 r37 r36 (w!!10) 23 3200236656 + !r40 = hh r36 r39 r38 r37 (w!!13) 4 681279174 + !r41 = hh r37 r40 r39 r38 (w!!0) 11 3936430074 + !r42 = hh r38 r41 r40 r39 (w!!3) 16 3572445317 + !r43 = hh r39 r42 r41 r40 (w!!6) 23 76029189 + !r44 = hh r40 r43 r42 r41 (w!!9) 4 3654602809 + !r45 = hh r41 r44 r43 r42 (w!!12) 11 3873151461 + !r46 = hh r42 r45 r44 r43 (w!!15) 16 530742520 + !r47 = hh r43 r46 r45 r44 (w!!2) 23 3299628645 + -- Round 4 + !r48 = ii r44 r47 r46 r45 (w!!0) 6 4096336452 + !r49 = ii r45 r48 r47 r46 (w!!7) 10 1126891415 + !r50 = ii r46 r49 r48 r47 (w!!14) 15 2878612391 + !r51 = ii r47 r50 r49 r48 (w!!5) 21 4237533241 + !r52 = ii r48 r51 r50 r49 (w!!12) 6 1700485571 + !r53 = ii r49 r52 r51 r50 (w!!3) 10 2399980690 + !r54 = ii r50 r53 r52 r51 (w!!10) 15 4293915773 + !r55 = ii r51 r54 r53 r52 (w!!1) 21 2240044497 + !r56 = ii r52 r55 r54 r53 (w!!8) 6 1873313359 + !r57 = ii r53 r56 r55 r54 (w!!15) 10 4264355552 + !r58 = ii r54 r57 r56 r55 (w!!6) 15 2734768916 + !r59 = ii r55 r58 r57 r56 (w!!13) 21 1309151649 + !r60 = ii r56 r59 r58 r57 (w!!4) 6 4149444226 + !r61 = ii r57 r60 r59 r58 (w!!11) 10 3174756917 + !r62 = ii r58 r61 r60 r59 (w!!2) 15 718787259 + !r63 = ii r59 r62 r61 r60 (w!!9) 21 3951481745 + in MD5Par r60 r63 r62 r61 + where + f !x !y !z = (x .&. y) .|. ((complement x) .&. z) + {-# INLINE f #-} + g !x !y !z = (x .&. z) .|. (y .&. (complement z)) + {-# INLINE g #-} + h !x !y !z = (x `xor` y `xor` z) + {-# INLINE h #-} + i !x !y !z = y `xor` (x .|. (complement z)) + {-# INLINE i #-} + ff a b c d x s ac = + let !a' = f b c d + x + ac + a + !a'' = rotateL a' s + in a'' + b + {-# INLINE ff #-} + gg a b c d x s ac = + let !a' = g b c d + x + ac + a + !a'' = rotateL a' s + in a'' + b + {-# INLINE gg #-} + hh a b c d x s ac = + let !a' = h b c d + x + ac + a + !a'' = rotateL a' s + in a'' + b + {-# INLINE hh #-} + ii a b c d x s ac = + let !a' = i b c d + x + ac + a + !a'' = rotateL a' s + in a'' + b + {-# INLINE ii #-} + (!!) word32s pos = getNthWord pos word32s + {-# INLINE (!!) #-} + getNthWord n bs@(PS ptr off len) = + inlinePerformIO $ withForeignPtr ptr $ \ptr' -> do + let p = castPtr $ plusPtr ptr' off + peekElemOff p n + {-# INLINE getNthWord #-} +{-# INLINE applyMD5Rounds #-} + +----- Some quick and dirty instances follow ----- + +instance Show MD5Context where + show (MD5Ctx (MD5Par a b c d) _ _) = + let bs = runPut $ putWord32be d >> putWord32be c >> putWord32be b >> putWord32be a + in foldl' (\str w -> let c = showHex w str + in if length c < length str + 2 + then '0':c + else c) "" (L.unpack bs) + +instance Binary MD5Context where + put (MD5Ctx p r l) = put p >> putWord8 (fromIntegral (B.length r)) >> + putByteString r >> putWord64be l + get = do p <- get + s <- getWord8 + r <- getByteString (fromIntegral s) + l <- getWord64be + return $ MD5Ctx p r l + +instance Binary MD5Partial where + put (MD5Par a b c d) = putWord32be a >> putWord32be b >> putWord32be c >> putWord32be d + get = do a <- getWord32be + b <- getWord32be + c <- getWord32be + d <- getWord32be + return $ MD5Par a b c d