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authorhiro <hiro@ee746299-78ed-0310-b773-934348b2243d>2005-09-08 08:00:07 +0000
committerhiro <hiro@ee746299-78ed-0310-b773-934348b2243d>2005-09-08 08:00:07 +0000
commit204da8e8b7cb2454bf714085fb450bdada726d2e (patch)
tree241ce33bb5e28ae4bd1613b560919ba205ab5d64 /libsylph/md5.c
parent498f88096131e56df008c571ddc138bd48a50673 (diff)
replaced md5.[ch] with public domain code in GNet.
git-svn-id: svn://sylpheed.sraoss.jp/sylpheed/trunk@559 ee746299-78ed-0310-b773-934348b2243d
Diffstat (limited to 'libsylph/md5.c')
-rw-r--r--libsylph/md5.c940
1 files changed, 572 insertions, 368 deletions
diff --git a/libsylph/md5.c b/libsylph/md5.c
index 54585971..639c2940 100644
--- a/libsylph/md5.c
+++ b/libsylph/md5.c
@@ -1,433 +1,637 @@
-/* md5.c - MD5 Message-Digest Algorithm
- * Copyright (C) 1995, 1996, 1998, 1999 Free Software Foundation, Inc.
- *
- * according to the definition of MD5 in RFC 1321 from April 1992.
- * NOTE: This is *not* the same file as the one from glibc.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2, or (at your option) any
- * later version.
+/*
+
+ GNet API added by David Helder <dhelder@umich.edu> 2000-6-11. All
+ additions and changes placed in the public domain.
+
+ Files originally from: http://www.gxsnmp.org/CVS/gxsnmp/
+
+ Modified the prefix of functions to prevent conflict with original GNet.
+
+ */
+/*
+ * This code implements the MD5 message-digest algorithm.
+ * The algorithm is due to Ron Rivest. This code was
+ * written by Colin Plumb in 1993, no copyright is claimed.
+ * This code is in the public domain; do with it what you wish.
*
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- * GNU General Public License for more details.
+ * Equivalent code is available from RSA Data Security, Inc.
+ * This code has been tested against that, and is equivalent,
+ * except that you don't need to include two pages of legalese
+ * with every copy.
*
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software Foundation,
- * Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ * To compute the message digest of a chunk of bytes, declare an
+ * MD5Context structure, pass it to MD5Init, call MD5Update as
+ * needed on buffers full of bytes, and then call MD5Final, which
+ * will fill a supplied 16-byte array with the digest.
*/
-/* Written by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995. */
-/* heavily modified for GnuPG by <werner.koch@guug.de> */
-/* modified again for Sylpheed by <wk@gnupg.org> 2001-02-11 */
+
+#include "md5.h"
+#include <glib.h>
+#include <string.h>
+
+
+/* ************************************************************ */
+/* Code below is from Colin Plumb implementation */
-/* Test values:
- * "" D4 1D 8C D9 8F 00 B2 04 E9 80 09 98 EC F8 42 7E
- * "a" 0C C1 75 B9 C0 F1 B6 A8 31 C3 99 E2 69 77 26 61
- * "abc 90 01 50 98 3C D2 4F B0 D6 96 3F 7D 28 E1 7F 72
- * "message digest" F9 6B 69 7D 7C B7 93 8D 52 5A 2F 31 AA F1 61 D0
+
+struct MD5Context {
+ guint32 buf[4];
+ guint32 bits[2];
+ guchar in[64];
+ int doByteReverse;
+};
+
+static void MD5Init(struct MD5Context *context);
+static void MD5Update(struct MD5Context *context, guchar const *buf,
+ guint len);
+static void MD5Final(guchar digest[16], struct MD5Context *context);
+static void MD5Transform(guint32 buf[4], guint32 const in[16]);
+
+/*
+ * This is needed to make RSAREF happy on some MS-DOS compilers.
*/
+typedef struct MD5Context MD5_CTX;
+
-#include <config.h>
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <assert.h>
-#include "utils.h"
-#include "md5.h"
+static void byteReverse(guint8 *buf, guint longs);
-/****************
- * Rotate a 32 bit integer by n bytes
+/*
+ * Note: this code is harmless on little-endian machines.
*/
-#if defined(__GNUC__) && defined(__i386__)
-static inline u32
-rol( u32 x, int n)
+void
+byteReverse(guint8 *buf, guint longs)
{
- __asm__("roll %%cl,%0"
- :"=r" (x)
- :"0" (x),"c" (n));
- return x;
+ guint32 t;
+ do
+ {
+ t = (guint32) ((guint) buf[3] << 8 | buf[2]) << 16 |
+ ((guint) buf[1] << 8 | buf[0]);
+ *(guint32 *) buf = t;
+ buf += 4;
+ }
+ while (--longs);
}
+
+/*
+ * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
+ * initialization constants.
+ */
+void
+MD5Init(struct MD5Context *ctx)
+{
+ ctx->buf[0] = 0x67452301;
+ ctx->buf[1] = 0xefcdab89;
+ ctx->buf[2] = 0x98badcfe;
+ ctx->buf[3] = 0x10325476;
+
+ ctx->bits[0] = 0;
+ ctx->bits[1] = 0;
+
+#if (G_BYTE_ORDER == G_BIG_ENDIAN)
+ ctx->doByteReverse = 1;
#else
-#define rol(x,n) ( ((x) << (n)) | ((x) >> (32-(n))) )
+ ctx->doByteReverse = 0;
#endif
+}
+
+/*
+ * Update context to reflect the concatenation of another buffer full
+ * of bytes.
+ */
+void
+MD5Update(struct MD5Context *ctx, guint8 const *buf, guint len)
+{
+ guint32 t;
+ /* Update bitcount */
-void
-md5_init(MD5_CONTEXT *ctx)
+ t = ctx->bits[0];
+ if ((ctx->bits[0] = t + ((guint32) len << 3)) < t)
+ ctx->bits[1]++; /* Carry from low to high */
+ ctx->bits[1] += len >> 29;
+
+ t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
+
+ /* Handle any leading odd-sized chunks */
+
+ if (t)
+ {
+ guint8 *p = (guint8 *) ctx->in + t;
+
+ t = 64 - t;
+ if (len < t)
+ {
+ g_memmove(p, buf, len);
+ return;
+ }
+ g_memmove(p, buf, t);
+ if (ctx->doByteReverse)
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (guint32 *) ctx->in);
+ buf += t;
+ len -= t;
+ }
+ /* Process data in 64-byte chunks */
+
+ while (len >= 64)
+ {
+ g_memmove(ctx->in, buf, 64);
+ if (ctx->doByteReverse)
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (guint32 *) ctx->in);
+ buf += 64;
+ len -= 64;
+ }
+
+ /* Handle any remaining bytes of data. */
+
+ g_memmove(ctx->in, buf, len);
+}
+
+/*
+ * Final wrapup - pad to 64-byte boundary with the bit pattern
+ * 1 0* (64-bit count of bits processed, MSB-first)
+ */
+void
+MD5Final(guint8 digest[16], struct MD5Context *ctx)
{
- ctx->A = 0x67452301;
- ctx->B = 0xefcdab89;
- ctx->C = 0x98badcfe;
- ctx->D = 0x10325476;
-
- ctx->nblocks = 0;
- ctx->count = 0;
- ctx->finalized = 0;
+ guint count;
+ guint8 *p;
+
+ /* Compute number of bytes mod 64 */
+ count = (ctx->bits[0] >> 3) & 0x3F;
+
+ /* Set the first char of padding to 0x80. This is safe since there is
+ always at least one byte free */
+ p = ctx->in + 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);
+ if (ctx->doByteReverse)
+ byteReverse(ctx->in, 16);
+ MD5Transform(ctx->buf, (guint32 *) ctx->in);
+
+ /* Now fill the next block with 56 bytes */
+ memset(ctx->in, 0, 56);
+ }
+ else
+ {
+ /* Pad block to 56 bytes */
+ memset(p, 0, count - 8);
+ }
+ if (ctx->doByteReverse)
+ byteReverse(ctx->in, 14);
+
+ /* Append length in bits and transform */
+ ((guint32 *) ctx->in)[14] = ctx->bits[0];
+ ((guint32 *) ctx->in)[15] = ctx->bits[1];
+
+ MD5Transform(ctx->buf, (guint32 *) ctx->in);
+ if (ctx->doByteReverse)
+ byteReverse((guint8 *) ctx->buf, 4);
+ g_memmove(digest, ctx->buf, 16);
+ memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
}
-/* These are the four functions used in the four steps of the MD5 algorithm
- and defined in the RFC 1321. The first function is a little bit optimized
- (as found in Colin Plumbs public domain implementation). */
-/* #define FF(b, c, d) ((b & c) | (~b & d)) */
-#define FF(b, c, d) (d ^ (b & (c ^ d)))
-#define FG(b, c, d) FF (d, b, c)
-#define FH(b, c, d) (b ^ c ^ d)
-#define FI(b, c, d) (c ^ (b | ~d))
+/* The four core functions - F1 is optimized somewhat */
+
+/* #define F1(x, y, z) (x & y | ~x & z) */
+#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<<s | w>>(32-s), w += x )
-/****************
- * transform n*64 bytes
+/*
+ * The core of the MD5 algorithm, this alters an existing MD5 hash to
+ * reflect the addition of 16 longwords of new data. MD5Update blocks
+ * the data and converts bytes into longwords for this routine.
*/
-static void
-transform(MD5_CONTEXT *ctx, const unsigned char *data)
+void
+MD5Transform(guint32 buf[4], guint32 const in[16])
{
- u32 correct_words[16];
- u32 A = ctx->A;
- u32 B = ctx->B;
- u32 C = ctx->C;
- u32 D = ctx->D;
- u32 *cwp = correct_words;
-
-#ifdef BIG_ENDIAN_HOST
+ register guint32 a, b, c, d;
+
+ a = buf[0];
+ b = buf[1];
+ c = buf[2];
+ d = buf[3];
+
+ MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
+ MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
+ MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
+ MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
+ MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
+ MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
+ MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
+ MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
+ MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
+ MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
+ MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
+ MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
+ MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
+ MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
+ MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
+ MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
+
+ MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
+ MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
+ MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
+ MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
+ MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
+ MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
+ MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
+ MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
+ MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
+ MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
+ MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
+ MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
+ MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
+ MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
+ MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
+ MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
+
+ MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
+ MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
+ MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
+ MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
+ MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
+ MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
+ MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
+ MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
+ MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
+ MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
+ MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
+ MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
+ MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
+ MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
+ MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
+ MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
+
+ MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
+ MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
+ MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
+ MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
+ MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
+ MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
+ MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
+ MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
+ MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
+ MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
+ MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
+ MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
+ MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
+ MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
+ MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
+ MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
+
+ buf[0] += a;
+ buf[1] += b;
+ buf[2] += c;
+ buf[3] += d;
+}
+
+
+
+/* ************************************************************ */
+/* Code below is David Helder's API for GNet */
+
+struct _SMD5
+{
+ struct MD5Context ctx;
+ gchar digest[S_GNET_MD5_HASH_LENGTH];
+};
+
+
+/**
+ * s_gnet_md5_new:
+ * @buffer: buffer to hash
+ * @length: length of @buffer
+ *
+ * Creates a #SMD5 from @buffer.
+ *
+ * Returns: a new #SMD5.
+ *
+ **/
+SMD5*
+s_gnet_md5_new (const guchar* buffer, guint length)
+{
+ SMD5* md5;
+
+ md5 = g_new0 (SMD5, 1);
+ MD5Init (&md5->ctx);
+ MD5Update (&md5->ctx, buffer, length);
+ MD5Final ((gpointer) &md5->digest, &md5->ctx);
+
+ return md5;
+}
+
+
+
+/**
+ * s_gnet_md5_new_string:
+ * @str: hexidecimal string
+ *
+ * Creates a #SMD5 from @str. @str is a hexidecimal string
+ * representing the digest.
+ *
+ * Returns: a new #SMD5.
+ *
+ **/
+SMD5*
+s_gnet_md5_new_string (const gchar* str)
+{
+ SMD5* md5;
+ guint i;
+
+ g_return_val_if_fail (str, NULL);
+ g_return_val_if_fail (strlen(str) >= (S_GNET_MD5_HASH_LENGTH * 2), NULL);
+
+ md5 = g_new0 (SMD5, 1);
+
+ for (i = 0; i < (S_GNET_MD5_HASH_LENGTH * 2); ++i)
+ {
+ guint val = 0;
+
+ switch (str[i])
{
- int i;
- unsigned char *p2, *p1;
-
- for (i = 0, p1 = data, p2 = (unsigned char*)correct_words;
- i < 16; i++, p2 += 4) {
- p2[3] = *p1++;
- p2[2] = *p1++;
- p2[1] = *p1++;
- p2[0] = *p1++;
- }
+ case '0': val = 0; break;
+ case '1': val = 1; break;
+ case '2': val = 2; break;
+ case '3': val = 3; break;
+ case '4': val = 4; break;
+ case '5': val = 5; break;
+ case '6': val = 6; break;
+ case '7': val = 7; break;
+ case '8': val = 8; break;
+ case '9': val = 9; break;
+ case 'A':
+ case 'a': val = 10; break;
+ case 'B':
+ case 'b': val = 11; break;
+ case 'C':
+ case 'c': val = 12; break;
+ case 'D':
+ case 'd': val = 13; break;
+ case 'E':
+ case 'e': val = 14; break;
+ case 'F':
+ case 'f': val = 15; break;
+ default:
+ g_return_val_if_fail (FALSE, NULL);
}
-#else
- memcpy(correct_words, data, 64);
-#endif
+ if (i % 2)
+ md5->digest[i / 2] |= val;
+ else
+ md5->digest[i / 2] = val << 4;
+ }
-#define OP(a, b, c, d, s, T) \
- do { \
- a += FF (b, c, d) + (*cwp++) + T; \
- a = rol(a, s); \
- a += b; \
- } while (0)
-
- /* Before we start, one word about the strange constants.
- They are defined in RFC 1321 as
-
- T[i] = (int) (4294967296.0 * fabs (sin (i))), i=1..64
- */
-
- /* Round 1. */
- OP (A, B, C, D, 7, 0xd76aa478);
- OP (D, A, B, C, 12, 0xe8c7b756);
- OP (C, D, A, B, 17, 0x242070db);
- OP (B, C, D, A, 22, 0xc1bdceee);
- OP (A, B, C, D, 7, 0xf57c0faf);
- OP (D, A, B, C, 12, 0x4787c62a);
- OP (C, D, A, B, 17, 0xa8304613);
- OP (B, C, D, A, 22, 0xfd469501);
- OP (A, B, C, D, 7, 0x698098d8);
- OP (D, A, B, C, 12, 0x8b44f7af);
- OP (C, D, A, B, 17, 0xffff5bb1);
- OP (B, C, D, A, 22, 0x895cd7be);
- OP (A, B, C, D, 7, 0x6b901122);
- OP (D, A, B, C, 12, 0xfd987193);
- OP (C, D, A, B, 17, 0xa679438e);
- OP (B, C, D, A, 22, 0x49b40821);
-
-#undef OP
-#define OP(f, a, b, c, d, k, s, T) \
- do { \
- a += f (b, c, d) + correct_words[k] + T; \
- a = rol(a, s); \
- a += b; \
- } while (0)
-
- /* Round 2. */
- OP (FG, A, B, C, D, 1, 5, 0xf61e2562);
- OP (FG, D, A, B, C, 6, 9, 0xc040b340);
- OP (FG, C, D, A, B, 11, 14, 0x265e5a51);
- OP (FG, B, C, D, A, 0, 20, 0xe9b6c7aa);
- OP (FG, A, B, C, D, 5, 5, 0xd62f105d);
- OP (FG, D, A, B, C, 10, 9, 0x02441453);
- OP (FG, C, D, A, B, 15, 14, 0xd8a1e681);
- OP (FG, B, C, D, A, 4, 20, 0xe7d3fbc8);
- OP (FG, A, B, C, D, 9, 5, 0x21e1cde6);
- OP (FG, D, A, B, C, 14, 9, 0xc33707d6);
- OP (FG, C, D, A, B, 3, 14, 0xf4d50d87);
- OP (FG, B, C, D, A, 8, 20, 0x455a14ed);
- OP (FG, A, B, C, D, 13, 5, 0xa9e3e905);
- OP (FG, D, A, B, C, 2, 9, 0xfcefa3f8);
- OP (FG, C, D, A, B, 7, 14, 0x676f02d9);
- OP (FG, B, C, D, A, 12, 20, 0x8d2a4c8a);
-
- /* Round 3. */
- OP (FH, A, B, C, D, 5, 4, 0xfffa3942);
- OP (FH, D, A, B, C, 8, 11, 0x8771f681);
- OP (FH, C, D, A, B, 11, 16, 0x6d9d6122);
- OP (FH, B, C, D, A, 14, 23, 0xfde5380c);
- OP (FH, A, B, C, D, 1, 4, 0xa4beea44);
- OP (FH, D, A, B, C, 4, 11, 0x4bdecfa9);
- OP (FH, C, D, A, B, 7, 16, 0xf6bb4b60);
- OP (FH, B, C, D, A, 10, 23, 0xbebfbc70);
- OP (FH, A, B, C, D, 13, 4, 0x289b7ec6);
- OP (FH, D, A, B, C, 0, 11, 0xeaa127fa);
- OP (FH, C, D, A, B, 3, 16, 0xd4ef3085);
- OP (FH, B, C, D, A, 6, 23, 0x04881d05);
- OP (FH, A, B, C, D, 9, 4, 0xd9d4d039);
- OP (FH, D, A, B, C, 12, 11, 0xe6db99e5);
- OP (FH, C, D, A, B, 15, 16, 0x1fa27cf8);
- OP (FH, B, C, D, A, 2, 23, 0xc4ac5665);
-
- /* Round 4. */
- OP (FI, A, B, C, D, 0, 6, 0xf4292244);
- OP (FI, D, A, B, C, 7, 10, 0x432aff97);
- OP (FI, C, D, A, B, 14, 15, 0xab9423a7);
- OP (FI, B, C, D, A, 5, 21, 0xfc93a039);
- OP (FI, A, B, C, D, 12, 6, 0x655b59c3);
- OP (FI, D, A, B, C, 3, 10, 0x8f0ccc92);
- OP (FI, C, D, A, B, 10, 15, 0xffeff47d);
- OP (FI, B, C, D, A, 1, 21, 0x85845dd1);
- OP (FI, A, B, C, D, 8, 6, 0x6fa87e4f);
- OP (FI, D, A, B, C, 15, 10, 0xfe2ce6e0);
- OP (FI, C, D, A, B, 6, 15, 0xa3014314);
- OP (FI, B, C, D, A, 13, 21, 0x4e0811a1);
- OP (FI, A, B, C, D, 4, 6, 0xf7537e82);
- OP (FI, D, A, B, C, 11, 10, 0xbd3af235);
- OP (FI, C, D, A, B, 2, 15, 0x2ad7d2bb);
- OP (FI, B, C, D, A, 9, 21, 0xeb86d391);
-
- /* Put checksum in context given as argument. */
- ctx->A += A;
- ctx->B += B;
- ctx->C += C;
- ctx->D += D;
+ return md5;
}
-/* The routine updates the message-digest context to
- * account for the presence of each of the characters inBuf[0..inLen-1]
- * in the message whose digest is being computed.
- */
-void
-md5_update(MD5_CONTEXT *hd, const unsigned char *inbuf, size_t inlen)
+/**
+ * s_gnet_md5_clone
+ * @md5: a #SMD5
+ *
+ * Copies a #SMD5.
+ *
+ * Returns: a copy of @md5.
+ *
+ **/
+SMD5*
+s_gnet_md5_clone (const SMD5* md5)
{
- if (hd->count == 64) { /* flush the buffer */
- transform( hd, hd->buf );
- hd->count = 0;
- hd->nblocks++;
- }
- if (!inbuf)
- return;
- if (hd->count) {
- for (; inlen && hd->count < 64; inlen--)
- hd->buf[hd->count++] = *inbuf++;
- md5_update(hd, NULL, 0);
- if (!inlen)
- return;
- }
+ SMD5* md52;
- while (inlen >= 64) {
- transform(hd, inbuf);
- hd->count = 0;
- hd->nblocks++;
- inlen -= 64;
- inbuf += 64;
- }
+ g_return_val_if_fail (md5, NULL);
+
+ md52 = g_new0 (SMD5, 1);
+ md52->ctx = md5->ctx;
+ memcpy (md52->digest, md5->digest, sizeof(md5->digest));
- for (; inlen && hd->count < 64; inlen--)
- hd->buf[hd->count++] = *inbuf++;
+ return md52;
}
-/* The routine final terminates the message-digest computation and
- * ends with the desired message digest in mdContext->digest[0...15].
- * The handle is prepared for a new MD5 cycle.
- * Returns 16 bytes representing the digest.
- */
+/**
+ * s_gnet_md5_delete
+ * @md5: a #SMD5
+ *
+ * Deletes a #SMD5.
+ *
+ **/
+void
+s_gnet_md5_delete (SMD5* md5)
+{
+ if (md5)
+ g_free (md5);
+}
+
-static void
-do_final(MD5_CONTEXT *hd)
+
+/**
+ * s_gnet_md5_new_incremental
+ *
+ * Creates a #SMD5 incrementally. After creating a #SMD5, call
+ * s_gnet_md5_update() one or more times to hash data. Finally, call
+ * s_gnet_md5_final() to compute the final hash value.
+ *
+ * Returns: a new #SMD5.
+ *
+ **/
+SMD5*
+s_gnet_md5_new_incremental (void)
{
- u32 t, msb, lsb;
- unsigned char *p;
-
- md5_update(hd, NULL, 0); /* flush */
-
- msb = 0;
- t = hd->nblocks;
- if ((lsb = t << 6) < t) /* multiply by 64 to make a byte count */
- msb++;
- msb += t >> 26;
- t = lsb;
- if ((lsb = t + hd->count) < t) /* add the count */
- msb++;
- t = lsb;
- if ((lsb = t << 3) < t) /* multiply by 8 to make a bit count */
- msb++;
- msb += t >> 29;
-
- if (hd->count < 56) { /* enough room */
- hd->buf[hd->count++] = 0x80; /* pad */
- while(hd->count < 56)
- hd->buf[hd->count++] = 0; /* pad */
- } else { /* need one extra block */
- hd->buf[hd->count++] = 0x80; /* pad character */
- while (hd->count < 64)
- hd->buf[hd->count++] = 0;
- md5_update(hd, NULL, 0); /* flush */
- memset(hd->buf, 0, 56); /* fill next block with zeroes */
- }
+ SMD5* md5;
- /* append the 64 bit count */
- hd->buf[56] = lsb ;
- hd->buf[57] = lsb >> 8;
- hd->buf[58] = lsb >> 16;
- hd->buf[59] = lsb >> 24;
- hd->buf[60] = msb ;
- hd->buf[61] = msb >> 8;
- hd->buf[62] = msb >> 16;
- hd->buf[63] = msb >> 24;
- transform(hd, hd->buf);
-
- p = hd->buf;
-#ifdef BIG_ENDIAN_HOST
-#define X(a) do { *p++ = hd->a ; *p++ = hd->a >> 8; \
- *p++ = hd->a >> 16; *p++ = hd->a >> 24; } while(0)
-#else /* little endian */
- /*#define X(a) do { *(u32*)p = hd->##a ; p += 4; } while(0)*/
- /* Unixware's cpp doesn't like the above construct so we do it his way:
- * (reported by Allan Clark) */
-#define X(a) do { *(u32*)p = (*hd).a ; p += 4; } while(0)
-#endif
- X(A);
- X(B);
- X(C);
- X(D);
-#undef X
- hd->finalized = 1;
+ md5 = g_new0 (SMD5, 1);
+ MD5Init (&md5->ctx);
+ return md5;
}
+
+/**
+ * s_gnet_md5_update
+ * @md5: a #SMD5
+ * @buffer: buffer to add
+ * @length: length of @buffer
+ *
+ * Updates the hash with @buffer. This may be called several times
+ * on a hash created by s_gnet_md5_new_incremental() before being
+ * finalized by calling s_gnet_md5_final().
+ *
+ **/
void
-md5_final(unsigned char *digest, MD5_CONTEXT *ctx)
+s_gnet_md5_update (SMD5* md5, const guchar* buffer, guint length)
{
- if (!ctx->finalized)
- do_final(ctx);
- memcpy(digest, ctx->buf, 16);
+ g_return_if_fail (md5);
+
+ MD5Update (&md5->ctx, buffer, length);
}
-/*
- * Creates a MD5 digest in hex fomrat (lowercase letters) from the
- * string S. hextdigest but be buffer of at lease 33 bytes!
- */
+
+/**
+ * s_gnet_md5_final
+ * @md5: a #SMD5
+ *
+ * Calcuates the final hash value of a #SMD5. This should only be
+ * called on an #SMD5 created by s_gnet_md5_new_incremental().
+ *
+ **/
void
-md5_hex_digest(char *hexdigest, const unsigned char *s)
+s_gnet_md5_final (SMD5* md5)
{
- int i;
- MD5_CONTEXT context;
- unsigned char digest[16];
+ g_return_if_fail (md5);
+
+ MD5Final ((gpointer) &md5->digest, &md5->ctx);
+}
+
- md5_init(&context);
- md5_update(&context, s, strlen(s));
- md5_final(digest, &context);
+/* **************************************** */
- for (i = 0; i < 16; i++)
- sprintf(hexdigest + 2 * i, "%02x", digest[i]);
+/**
+ * s_gnet_md5_equal
+ * @p1: first #SMD5.
+ * @p2: second #SMD5.
+ *
+ * Compares two #SMD5's for equality.
+ *
+ * Returns: TRUE if they are equal; FALSE otherwise.
+ *
+ **/
+gint
+s_gnet_md5_equal (gconstpointer p1, gconstpointer p2)
+{
+ SMD5* md5a = (SMD5*) p1;
+ SMD5* md5b = (SMD5*) p2;
+ guint i;
+
+ for (i = 0; i < S_GNET_MD5_HASH_LENGTH; ++i)
+ if (md5a->digest[i] != md5b->digest[i])
+ return FALSE;
+
+ return TRUE;
}
-/*
-** Function: md5_hmac
-** taken from the file rfc2104.txt
-** written by Martin Schaaf <mascha@ma-scha.de>
-*/
-void
-md5_hmac(unsigned char *digest,
- const unsigned char* text, int text_len,
- const unsigned char* key, int key_len)
+/**
+ * s_gnet_md5_hash
+ * @p: a #SMD5
+ *
+ * Creates a hash code for a #SMD5 for use with GHashTable. This
+ * hash value is not the same as the MD5 digest.
+ *
+ * Returns: the hash code for @p.
+ *
+ **/
+guint
+s_gnet_md5_hash (gconstpointer p)
{
- MD5_CONTEXT context;
- unsigned char k_ipad[64]; /* inner padding -
- * key XORd with ipad
- */
- unsigned char k_opad[64]; /* outer padding -
- * key XORd with opad
- */
- /* unsigned char tk[16]; */
- int i;
-
- /* start out by storing key in pads */
- memset(k_ipad, 0, sizeof k_ipad);
- memset(k_opad, 0, sizeof k_opad);
- if (key_len > 64) {
- /* if key is longer than 64 bytes reset it to key=MD5(key) */
- MD5_CONTEXT tctx;
-
- md5_init(&tctx);
- md5_update(&tctx, key, key_len);
- md5_final(k_ipad, &tctx);
- md5_final(k_opad, &tctx);
- } else {
- memcpy(k_ipad, key, key_len);
- memcpy(k_opad, key, key_len);
- }
+ const SMD5* md5 = (const SMD5*) p;
+ const guint* q;
+
+ g_return_val_if_fail (md5, 0);
+
+ q = (const guint*) md5->digest;
+
+ return (q[0] ^ q[1] ^ q[2] ^ q[3]);
+}
+
+
+/**
+ * s_gnet_md5_get_digest
+ * @md5: a #SMD5
+ *
+ * Gets the raw MD5 digest.
+ *
+ * Returns: a callee-owned buffer containing the MD5 hash digest.
+ * The buffer is %S_GNET_MD5_HASH_LENGTH bytes long.
+ *
+ **/
+gchar*
+s_gnet_md5_get_digest (const SMD5* md5)
+{
+ g_return_val_if_fail (md5, NULL);
+
+ return (gchar*) md5->digest;
+}
- /*
- * the HMAC_MD5 transform looks like:
- *
- * MD5(K XOR opad, MD5(K XOR ipad, text))
- *
- * where K is an n byte key
- * ipad is the byte 0x36 repeated 64 times
- * opad is the byte 0x5c repeated 64 times
- * and text is the data being protected
- */
-
-
- /* XOR key with ipad and opad values */
- for (i = 0; i < 64; i++) {
- k_ipad[i] ^= 0x36;
- k_opad[i] ^= 0x5c;
- }
- /*
- * perform inner MD5
- */
- md5_init(&context); /* init context for 1st
- * pass */
- md5_update(&context, k_ipad, 64); /* start with inner pad */
- md5_update(&context, text, text_len); /* then text of datagram */
- md5_final(digest, &context); /* finish up 1st pass */
- /*
- * perform outer MD5
- */
- md5_init(&context); /* init context for 2nd
- * pass */
- md5_update(&context, k_opad, 64); /* start with outer pad */
- md5_update(&context, digest, 16); /* then results of 1st
- * hash */
- md5_final(digest, &context); /* finish up 2nd pass */
+static gchar bits2hex[16] = { '0', '1', '2', '3',
+ '4', '5', '6', '7',
+ '8', '9', 'a', 'b',
+ 'c', 'd', 'e', 'f' };
+
+/**
+ * s_gnet_md5_get_string
+ * @md5: a #SMD5
+ *
+ * Gets the digest represented a human-readable string.
+ *
+ * Returns: a hexadecimal string representing the digest. The string
+ * is 2 * %S_GNET_MD5_HASH_LENGTH bytes long and NULL terminated. The
+ * string is caller owned.
+ *
+ **/
+gchar*
+s_gnet_md5_get_string (const SMD5* md5)
+{
+ gchar* str;
+ guint i;
+
+ g_return_val_if_fail (md5, NULL);
+
+ str = g_new (gchar, S_GNET_MD5_HASH_LENGTH * 2 + 1);
+ str[S_GNET_MD5_HASH_LENGTH * 2] = '\0';
+
+ for (i = 0; i < S_GNET_MD5_HASH_LENGTH; ++i)
+ {
+ str[i * 2] = bits2hex[(md5->digest[i] & 0xF0) >> 4];
+ str[(i * 2) + 1] = bits2hex[(md5->digest[i] & 0x0F) ];
+ }
+
+ return str;
}
+
+/**
+ * s_gnet_md5_copy_string
+ * @md5: a #SMD5
+ * @buffer: buffer at least 2 * %S_GNET_MD5_HASH_LENGTH bytes long
+ *
+ * Copies the digest, represented as a string, into @buffer. The
+ * string is not NULL terminated.
+ *
+ **/
void
-md5_hex_hmac(char *hexdigest,
- const unsigned char* text, int text_len,
- const unsigned char* key, int key_len)
+s_gnet_md5_copy_string (const SMD5* md5, gchar* buffer)
{
- unsigned char digest[16];
- int i;
+ guint i;
+
+ g_return_if_fail (md5);
+ g_return_if_fail (buffer);
- md5_hmac(digest, text, text_len, key, key_len);
- for (i = 0; i < 16; i++)
- sprintf(hexdigest + 2 * i, "%02x", digest[i]);
+ for (i = 0; i < S_GNET_MD5_HASH_LENGTH; ++i)
+ {
+ buffer[i * 2] = bits2hex[(md5->digest[i] & 0xF0) >> 4];
+ buffer[(i * 2) + 1] = bits2hex[(md5->digest[i] & 0x0F) ];
+ }
}