From 469bbcf0701e1eb8a6670c23145b0da87357e178 Mon Sep 17 00:00:00 2001 From: Mike Buland Date: Sun, 25 Mar 2012 20:00:08 +0000 Subject: Code is all reorganized. We're about ready to release. I should write up a little explenation of the arrangement. --- src/md5.cpp | 246 ------------------------------------------------------------ 1 file changed, 246 deletions(-) delete mode 100644 src/md5.cpp (limited to 'src/md5.cpp') diff --git a/src/md5.cpp b/src/md5.cpp deleted file mode 100644 index 15cba17..0000000 --- a/src/md5.cpp +++ /dev/null @@ -1,246 +0,0 @@ -/* - * Copyright (C) 2007-2011 Xagasoft, All rights reserved. - * - * This file is part of the libbu++ library and is released under the - * terms of the license contained in the file LICENSE. - */ - -#include -#include -#include -#include "bu/md5.h" -#include "bu/stream.h" - -#ifdef SYSTEM_BIG_ENDIAN -# define toLittleEndian( a, b ) _toLittleEndian( a, b ) -#else -# define toLittleEndian( a, b ) (void)0 -#endif - -Bu::Md5::Md5() -{ - reset(); -} - -Bu::Md5::~Md5() -{ -} - -void Bu::Md5::reset() -{ - // These are the magic seed numbers... - - sum[0] = 0x67452301U; - sum[1] = 0xEFCDAB89U; - sum[2] = 0x98BADCFEU; - sum[3] = 0x10325476U; - - uBits[0] = 0; - uBits[1] = 0; -} - -void Bu::Md5::setSalt( const Bu::String & /*sSalt*/ ) -{ -} - -void Bu::Md5::addData( const void *sVData, int iSize ) -{ - const char *sData = (const char *)sVData; - uint32_t t; - - t = uBits[0]; - if( (uBits[0] = t + ((uint32_t)iSize << 3)) < t ) - uBits[1]++; - uBits[1] += iSize >> 29; - - t = (t >> 3) & 0x3f; /* How many bytes we have buffered */ - - /* Handle any leading odd-sized chunks */ - if( t ) - { - unsigned char *p = (unsigned char *) inbuf + t; - - t = 64 - t; - if( (uint32_t)iSize < t ) { - memcpy( p, sData, iSize ); - return; - } - memcpy( p, sData, t ); - toLittleEndian( inbuf, 16 ); - compBlock( sum, (uint32_t *)inbuf ); - sData += t; - iSize -= t; - } - - /* Process data in 64-byte chunks */ - while( iSize >= 64 ) - { - memcpy( inbuf, sData, 64 ); - toLittleEndian( inbuf, 16 ); - compBlock( sum, (uint32_t *)inbuf ); - sData += 64; - iSize -= 64; - } - - /* Handle any remaining bytes of data. */ - memcpy( inbuf, sData, iSize ); -} - -Bu::String Bu::Md5::getResult() -{ - uint32_t lsum[4]; - compCap( lsum ); - return Bu::String( (const char *)lsum, 4*4 ); -} - -void Bu::Md5::writeResult( Bu::Stream &sOut ) -{ - uint32_t lsum[4]; - compCap( lsum ); - sOut.write( lsum, 4*4 ); -} - -void Bu::Md5::compCap( uint32_t *sumout ) -{ - uint8_t tmpbuf[64]; - memcpy( sumout, sum, 4*4 ); - memcpy( tmpbuf, inbuf, 64 ); - - uint32_t count; - uint8_t *p; - - /* Compute number of bytes mod 64 */ - count = (uBits[0] >> 3) & 0x3F; - - /* Set the first char of padding to 0x80. This is safe since there is - always at least one byte free */ - p = tmpbuf + count; - *p++ = 0x80; - - /* Bytes of padding needed to make 64 bytes */ - count = 64 - 1 - count; - - /* Pad out to 56 mod 64 */ - if (count < 8) { - /* Two lots of padding: Pad the first block to 64 bytes */ - memset( p, 0, count ); - toLittleEndian( tmpbuf, 16 ); - compBlock( sumout, (uint32_t *)tmpbuf ); - - /* Now fill the next block with 56 bytes */ - memset( tmpbuf, 0, 56); - } else { - /* Pad block to 56 bytes */ - memset( p, 0, count - 8); - } - toLittleEndian( tmpbuf, 14 ); - - /* Append length in bits and transform */ - ((uint32_t *) tmpbuf)[14] = uBits[0]; - ((uint32_t *) tmpbuf)[15] = uBits[1]; - - compBlock( sumout, (uint32_t *)tmpbuf ); - toLittleEndian((unsigned char *)sumout, 4); -} - -#define F1(x, y, z) (z ^ (x & (y ^ z))) -#define F2(x, y, z) F1(z, x, y) -#define F3(x, y, z) (x ^ y ^ z) -#define F4(x, y, z) (y ^ (x | ~z)) - -/* This is the central step in the MD5 algorithm. */ -#define MD5STEP(f, w, x, y, z, data, s) \ - ( w += f(x, y, z) + data, w = w<>(32-s), w += x ) - -void Bu::Md5::compBlock( uint32_t *lsum, uint32_t *x ) -{ - register uint32_t a, b, c, d; - a = lsum[0]; - b = lsum[1]; - c = lsum[2]; - d = lsum[3]; - - MD5STEP(F1, a, b, c, d, x[0] + 0xd76aa478, 7); - MD5STEP(F1, d, a, b, c, x[1] + 0xe8c7b756, 12); - MD5STEP(F1, c, d, a, b, x[2] + 0x242070db, 17); - MD5STEP(F1, b, c, d, a, x[3] + 0xc1bdceee, 22); - MD5STEP(F1, a, b, c, d, x[4] + 0xf57c0faf, 7); - MD5STEP(F1, d, a, b, c, x[5] + 0x4787c62a, 12); - MD5STEP(F1, c, d, a, b, x[6] + 0xa8304613, 17); - MD5STEP(F1, b, c, d, a, x[7] + 0xfd469501, 22); - MD5STEP(F1, a, b, c, d, x[8] + 0x698098d8, 7); - MD5STEP(F1, d, a, b, c, x[9] + 0x8b44f7af, 12); - MD5STEP(F1, c, d, a, b, x[10] + 0xffff5bb1, 17); - MD5STEP(F1, b, c, d, a, x[11] + 0x895cd7be, 22); - MD5STEP(F1, a, b, c, d, x[12] + 0x6b901122, 7); - MD5STEP(F1, d, a, b, c, x[13] + 0xfd987193, 12); - MD5STEP(F1, c, d, a, b, x[14] + 0xa679438e, 17); - MD5STEP(F1, b, c, d, a, x[15] + 0x49b40821, 22); - - MD5STEP(F2, a, b, c, d, x[1] + 0xf61e2562, 5); - MD5STEP(F2, d, a, b, c, x[6] + 0xc040b340, 9); - MD5STEP(F2, c, d, a, b, x[11] + 0x265e5a51, 14); - MD5STEP(F2, b, c, d, a, x[0] + 0xe9b6c7aa, 20); - MD5STEP(F2, a, b, c, d, x[5] + 0xd62f105d, 5); - MD5STEP(F2, d, a, b, c, x[10] + 0x02441453, 9); - MD5STEP(F2, c, d, a, b, x[15] + 0xd8a1e681, 14); - MD5STEP(F2, b, c, d, a, x[4] + 0xe7d3fbc8, 20); - MD5STEP(F2, a, b, c, d, x[9] + 0x21e1cde6, 5); - MD5STEP(F2, d, a, b, c, x[14] + 0xc33707d6, 9); - MD5STEP(F2, c, d, a, b, x[3] + 0xf4d50d87, 14); - MD5STEP(F2, b, c, d, a, x[8] + 0x455a14ed, 20); - MD5STEP(F2, a, b, c, d, x[13] + 0xa9e3e905, 5); - MD5STEP(F2, d, a, b, c, x[2] + 0xfcefa3f8, 9); - MD5STEP(F2, c, d, a, b, x[7] + 0x676f02d9, 14); - MD5STEP(F2, b, c, d, a, x[12] + 0x8d2a4c8a, 20); - - MD5STEP(F3, a, b, c, d, x[5] + 0xfffa3942, 4); - MD5STEP(F3, d, a, b, c, x[8] + 0x8771f681, 11); - MD5STEP(F3, c, d, a, b, x[11] + 0x6d9d6122, 16); - MD5STEP(F3, b, c, d, a, x[14] + 0xfde5380c, 23); - MD5STEP(F3, a, b, c, d, x[1] + 0xa4beea44, 4); - MD5STEP(F3, d, a, b, c, x[4] + 0x4bdecfa9, 11); - MD5STEP(F3, c, d, a, b, x[7] + 0xf6bb4b60, 16); - MD5STEP(F3, b, c, d, a, x[10] + 0xbebfbc70, 23); - MD5STEP(F3, a, b, c, d, x[13] + 0x289b7ec6, 4); - MD5STEP(F3, d, a, b, c, x[0] + 0xeaa127fa, 11); - MD5STEP(F3, c, d, a, b, x[3] + 0xd4ef3085, 16); - MD5STEP(F3, b, c, d, a, x[6] + 0x04881d05, 23); - MD5STEP(F3, a, b, c, d, x[9] + 0xd9d4d039, 4); - MD5STEP(F3, d, a, b, c, x[12] + 0xe6db99e5, 11); - MD5STEP(F3, c, d, a, b, x[15] + 0x1fa27cf8, 16); - MD5STEP(F3, b, c, d, a, x[2] + 0xc4ac5665, 23); - - MD5STEP(F4, a, b, c, d, x[0] + 0xf4292244, 6); - MD5STEP(F4, d, a, b, c, x[7] + 0x432aff97, 10); - MD5STEP(F4, c, d, a, b, x[14] + 0xab9423a7, 15); - MD5STEP(F4, b, c, d, a, x[5] + 0xfc93a039, 21); - MD5STEP(F4, a, b, c, d, x[12] + 0x655b59c3, 6); - MD5STEP(F4, d, a, b, c, x[3] + 0x8f0ccc92, 10); - MD5STEP(F4, c, d, a, b, x[10] + 0xffeff47d, 15); - MD5STEP(F4, b, c, d, a, x[1] + 0x85845dd1, 21); - MD5STEP(F4, a, b, c, d, x[8] + 0x6fa87e4f, 6); - MD5STEP(F4, d, a, b, c, x[15] + 0xfe2ce6e0, 10); - MD5STEP(F4, c, d, a, b, x[6] + 0xa3014314, 15); - MD5STEP(F4, b, c, d, a, x[13] + 0x4e0811a1, 21); - MD5STEP(F4, a, b, c, d, x[4] + 0xf7537e82, 6); - MD5STEP(F4, d, a, b, c, x[11] + 0xbd3af235, 10); - MD5STEP(F4, c, d, a, b, x[2] + 0x2ad7d2bb, 15); - MD5STEP(F4, b, c, d, a, x[9] + 0xeb86d391, 21); - - lsum[0] += a; - lsum[1] += b; - lsum[2] += c; - lsum[3] += d; -} - -void Bu::Md5::_toLittleEndian( uint8_t *buf, uint32_t count ) -{ - uint32_t t; - do { - t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 | - ((unsigned) buf[1] << 8 | buf[0]); - *(uint32_t *) buf = t; - buf += 4; - } while( --count ); -} -- cgit v1.2.3