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authorgspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-27 23:15:42 +0000
committergspencer@google.com <gspencer@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2009-05-27 23:15:42 +0000
commit05b47f7a8c5451f858dc220df0e3a97542edace6 (patch)
treea2273d619f0625c9d44d40842845ccce2eac1045 /o3d/nbguidgen/win/md5.cc
parent5cdc8bdb4c847cefe7f4542bd10c9880c2c557a0 (diff)
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This is the O3D source tree's initial commit to the Chromium tree. It
is not built or referenced at all by the chrome build yet, and doesn't yet build in it's new home. We'll change that shortly. git-svn-id: svn://svn.chromium.org/chrome/trunk/src@17035 0039d316-1c4b-4281-b951-d872f2087c98
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+/*
+ * Copyright 2009, Google Inc.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ * * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * * 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.
+ * * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND 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 COPYRIGHT
+ * OWNER 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.
+ */
+
+//
+// This is adapted from libtomcrypt, which has been released into the
+// public domain.
+
+#include "nbguidgen/win/md5.h"
+#include <memory.h>
+
+#undef MAX
+#undef MIN
+#define MAX(x, y) ( ((x) > (y)) ? (x) : (y) )
+#define MIN(x, y) ( ((x) < (y)) ? (x) : (y) )
+
+#ifdef _MSC_VER
+
+/* instrinsic rotate */
+#include <stdlib.h>
+#pragma intrinsic(_lrotr, _lrotl)
+#define ROR(x, n) _lrotr(x, n)
+#define ROL(x, n) _lrotl(x, n)
+
+#else
+
+/* rotates the hard way */
+#define ROL(x, y) ( (((unsigned long)(x) << (unsigned long)((y) & 31)) | \
+ (((unsigned long)(x) & 0xFFFFFFFFUL) >> \
+ (unsigned long)(32-((y) & 31)))) & 0xFFFFFFFFUL)
+#define ROR(x, y) ( ((((unsigned long)(x) & 0xFFFFFFFFUL) >> \
+ (unsigned long)((y) & 31)) | \
+ ((unsigned long)(x) << \
+ (unsigned long)(32 - ((y) & 31)))) & 0xFFFFFFFFUL)
+
+#endif
+
+#define STORE32L(x, y) \
+ { (y)[3] = (unsigned char)(((x) >> 24)&255); \
+ (y)[2] = (unsigned char)(((x) >> 16)&255); \
+ (y)[1] = (unsigned char)(((x) >> 8)&255); \
+ (y)[0] = (unsigned char)((x) & 255); }
+
+#define LOAD32L(x, y) \
+ { x = ((unsigned long)((y)[3] & 255)<<24) | \
+ ((unsigned long)((y)[2] & 255)<<16) | \
+ ((unsigned long)((y)[1] & 255)<<8) | \
+ ((unsigned long)((y)[0] & 255)); }
+
+#define STORE64L(x, y) \
+ { (y)[7] = (unsigned char)(((x) >> 56) & 255); \
+ (y)[6] = (unsigned char)(((x) >> 48) & 255); \
+ (y)[5] = (unsigned char)(((x) >> 40) & 255); \
+ (y)[4] = (unsigned char)(((x) >> 32) & 255); \
+ (y)[3] = (unsigned char)(((x) >> 24) & 255); \
+ (y)[2] = (unsigned char)(((x) >> 16) & 255); \
+ (y)[1] = (unsigned char)(((x) >> 8) & 255); \
+ (y)[0] = (unsigned char)((x) & 255); }
+
+#define F(x, y, z) (z ^ (x & (y ^ z)))
+#define G(x, y, z) (y ^ (z & (y ^ x)))
+#define H(x, y, z) (x^y^z)
+#define I(x, y, z) (y^(x|(~z)))
+
+#define FF(a, b, c, d, M, s, t) \
+ a = (a + F(b, c, d) + M + t); \
+ a = ROL(a, s) + b;
+
+#define GG(a, b, c, d, M, s, t) \
+ a = (a + G(b, c, d) + M + t); \
+ a = ROL(a, s) + b;
+
+#define HH(a, b, c, d, M, s, t) \
+ a = (a + H(b, c, d) + M + t); \
+ a = ROL(a, s) + b;
+
+#define II(a, b, c, d, M, s, t) \
+ a = (a + I(b, c, d) + M + t); \
+ a = ROL(a, s) + b;
+
+static void md5_compress(md5_t *md) {
+ unsigned long i, W[16], a, b, c, d;
+
+ /* copy the state into 512-bits into W[0..15] */
+ for (i = 0; i < 16; i++) {
+ LOAD32L(W[i], md->buf + (4*i));
+ }
+
+ /* copy state */
+ a = md->state[0];
+ b = md->state[1];
+ c = md->state[2];
+ d = md->state[3];
+
+ FF(a, b, c, d, W[0], 7, 0xd76aa478UL)
+ FF(d, a, b, c, W[1], 12, 0xe8c7b756UL)
+ FF(c, d, a, b, W[2], 17, 0x242070dbUL)
+ FF(b, c, d, a, W[3], 22, 0xc1bdceeeUL)
+ FF(a, b, c, d, W[4], 7, 0xf57c0fafUL)
+ FF(d, a, b, c, W[5], 12, 0x4787c62aUL)
+ FF(c, d, a, b, W[6], 17, 0xa8304613UL)
+ FF(b, c, d, a, W[7], 22, 0xfd469501UL)
+ FF(a, b, c, d, W[8], 7, 0x698098d8UL)
+ FF(d, a, b, c, W[9], 12, 0x8b44f7afUL)
+ FF(c, d, a, b, W[10], 17, 0xffff5bb1UL)
+ FF(b, c, d, a, W[11], 22, 0x895cd7beUL)
+ FF(a, b, c, d, W[12], 7, 0x6b901122UL)
+ FF(d, a, b, c, W[13], 12, 0xfd987193UL)
+ FF(c, d, a, b, W[14], 17, 0xa679438eUL)
+ FF(b, c, d, a, W[15], 22, 0x49b40821UL)
+ GG(a, b, c, d, W[1], 5, 0xf61e2562UL)
+ GG(d, a, b, c, W[6], 9, 0xc040b340UL)
+ GG(c, d, a, b, W[11], 14, 0x265e5a51UL)
+ GG(b, c, d, a, W[0], 20, 0xe9b6c7aaUL)
+ GG(a, b, c, d, W[5], 5, 0xd62f105dUL)
+ GG(d, a, b, c, W[10], 9, 0x02441453UL)
+ GG(c, d, a, b, W[15], 14, 0xd8a1e681UL)
+ GG(b, c, d, a, W[4], 20, 0xe7d3fbc8UL)
+ GG(a, b, c, d, W[9], 5, 0x21e1cde6UL)
+ GG(d, a, b, c, W[14], 9, 0xc33707d6UL)
+ GG(c, d, a, b, W[3], 14, 0xf4d50d87UL)
+ GG(b, c, d, a, W[8], 20, 0x455a14edUL)
+ GG(a, b, c, d, W[13], 5, 0xa9e3e905UL)
+ GG(d, a, b, c, W[2], 9, 0xfcefa3f8UL)
+ GG(c, d, a, b, W[7], 14, 0x676f02d9UL)
+ GG(b, c, d, a, W[12], 20, 0x8d2a4c8aUL)
+ HH(a, b, c, d, W[5], 4, 0xfffa3942UL)
+ HH(d, a, b, c, W[8], 11, 0x8771f681UL)
+ HH(c, d, a, b, W[11], 16, 0x6d9d6122UL)
+ HH(b, c, d, a, W[14], 23, 0xfde5380cUL)
+ HH(a, b, c, d, W[1], 4, 0xa4beea44UL)
+ HH(d, a, b, c, W[4], 11, 0x4bdecfa9UL)
+ HH(c, d, a, b, W[7], 16, 0xf6bb4b60UL)
+ HH(b, c, d, a, W[10], 23, 0xbebfbc70UL)
+ HH(a, b, c, d, W[13], 4, 0x289b7ec6UL)
+ HH(d, a, b, c, W[0], 11, 0xeaa127faUL)
+ HH(c, d, a, b, W[3], 16, 0xd4ef3085UL)
+ HH(b, c, d, a, W[6], 23, 0x04881d05UL)
+ HH(a, b, c, d, W[9], 4, 0xd9d4d039UL)
+ HH(d, a, b, c, W[12], 11, 0xe6db99e5UL)
+ HH(c, d, a, b, W[15], 16, 0x1fa27cf8UL)
+ HH(b, c, d, a, W[2], 23, 0xc4ac5665UL)
+ II(a, b, c, d, W[0], 6, 0xf4292244UL)
+ II(d, a, b, c, W[7], 10, 0x432aff97UL)
+ II(c, d, a, b, W[14], 15, 0xab9423a7UL)
+ II(b, c, d, a, W[5], 21, 0xfc93a039UL)
+ II(a, b, c, d, W[12], 6, 0x655b59c3UL)
+ II(d, a, b, c, W[3], 10, 0x8f0ccc92UL)
+ II(c, d, a, b, W[10], 15, 0xffeff47dUL)
+ II(b, c, d, a, W[1], 21, 0x85845dd1UL)
+ II(a, b, c, d, W[8], 6, 0x6fa87e4fUL)
+ II(d, a, b, c, W[15], 10, 0xfe2ce6e0UL)
+ II(c, d, a, b, W[6], 15, 0xa3014314UL)
+ II(b, c, d, a, W[13], 21, 0x4e0811a1UL)
+ II(a, b, c, d, W[4], 6, 0xf7537e82UL)
+ II(d, a, b, c, W[11], 10, 0xbd3af235UL)
+ II(c, d, a, b, W[2], 15, 0x2ad7d2bbUL)
+ II(b, c, d, a, W[9], 21, 0xeb86d391UL)
+
+ md->state[0] = md->state[0] + a;
+ md->state[1] = md->state[1] + b;
+ md->state[2] = md->state[2] + c;
+ md->state[3] = md->state[3] + d;
+}
+
+void MD5Init(md5_t *md) {
+ md->state[0] = 0x67452301UL;
+ md->state[1] = 0xefcdab89UL;
+ md->state[2] = 0x98badcfeUL;
+ md->state[3] = 0x10325476UL;
+ md->curlen = 0;
+ md->length = 0;
+}
+
+void MD5Process(md5_t *md, const unsigned char *buf, unsigned long len) {
+ unsigned long n;
+ while (len > 0) {
+ n = MIN(len, (64 - md->curlen));
+ memcpy(md->buf + md->curlen, buf, (size_t)n);
+ md->curlen += n;
+ buf += n;
+ len -= n;
+
+ /* is 64 bytes full? */
+ if (md->curlen == 64) {
+ md5_compress(md);
+ md->length += 512;
+ md->curlen = 0;
+ }
+ }
+}
+
+void MD5Finish(md5_t *md, unsigned char *hash) {
+ int i;
+
+ /* increase the length of the message */
+ md->length += md->curlen * 8;
+
+ /* append the '1' bit */
+ md->buf[md->curlen++] = (unsigned char)0x80;
+
+ /* if the length is currently above 56 bytes we append zeros
+ * then compress. Then we can fall back to padding zeros and length
+ * encoding like normal.
+ */
+ if (md->curlen > 56) {
+ while (md->curlen < 64) {
+ md->buf[md->curlen++] = (unsigned char)0;
+ }
+ md5_compress(md);
+ md->curlen = 0;
+ }
+
+ /* pad upto 56 bytes of zeroes */
+ while (md->curlen < 56) {
+ md->buf[md->curlen++] = (unsigned char)0;
+ }
+
+ /* store length */
+ STORE64L(md->length, md->buf+56);
+ md5_compress(md);
+
+ /* copy output */
+ for (i = 0; i < 4; i++) {
+ STORE32L(md->state[i], hash+(4*i));
+ }
+}