pureMD5 (empty) → 0.1.0
raw patch · 4 files changed
+295/−0 lines, 4 filesdep +basedep +binarydep +bytestringsetup-changed
Dependencies added: base, binary, bytestring
Files
- LICENSE +30/−0
- Setup.lhs +3/−0
- pureMD5.cabal +26/−0
- src/Data/Digest/MD5.hs +236/−0
+ LICENSE view
@@ -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.
+ Setup.lhs view
@@ -0,0 +1,3 @@+#!/usr/bin/env runhaskell+> import Distribution.Simple+> main = defaultMain
+ pureMD5.cabal view
@@ -0,0 +1,26 @@+name: pureMD5+version: 0.1.0+license: BSD3+license-file: LICENSE+author: Thomas DuBuisson <thomas.dubuisosn@gmail.com>+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
+ src/Data/Digest/MD5.hs view
@@ -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