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* replace md5 implementation with public-domain licensed

master
Alex 'AdUser' Z 4 years ago
parent
2ab12c4fd5
commit
8e0d93aa71
3 changed files with 324 additions and 341 deletions
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  1. 11
      src/csocket.c
  2. 515
      src/md5.c
  3. 77
      src/md5.h

11
src/csocket.c
Unescape View File

@ -77,12 +77,11 @@ void
f2b_conn_update_challenge(f2b_conn_t *conn) { f2b_conn_update_challenge(f2b_conn_t *conn) {
char buf[64] = ""; char buf[64] = "";
MD5_CTX md5; MD5_CTX md5;
memset(&md5, 0x0, sizeof(md5));
snprintf(buf, sizeof(buf), "%08lx+%ld", random(), time(NULL)); snprintf(buf, sizeof(buf), "%08lx+%ld", random(), time(NULL));
MD5Init(&md5); MD5Init(&md5);
MD5Update(&md5, buf, strlen(buf)); MD5Update(&md5, (unsigned char *) buf, strlen(buf));
MD5Final(&md5); MD5Final(&md5);
strlcpy(conn->challenge, md5.string, sizeof(conn->challenge)); strlcpy(conn->challenge, md5.hexdigest, sizeof(conn->challenge));
} }
void void
@ -113,10 +112,10 @@ f2b_conn_check_auth(f2b_conn_t *conn, f2b_cmd_t *cmd) {
f2b_log_msg(log_error, "csocket auth failure from %s: password mismatch", conn->peer); f2b_log_msg(log_error, "csocket auth failure from %s: password mismatch", conn->peer);
} else if (strcmp(cmd->args[1], "challenge") == 0) { } else if (strcmp(cmd->args[1], "challenge") == 0) {
MD5Init(&md5); MD5Init(&md5);
MD5Update(&md5, conn->challenge, strlen(conn->challenge)); MD5Update(&md5, (unsigned char *) conn->challenge, strlen(conn->challenge));
MD5Update(&md5, conn->password, strlen(conn->password)); MD5Update(&md5, (unsigned char *) conn->password, strlen(conn->password));
MD5Final(&md5); MD5Final(&md5);
if (strcmp(cmd->args[2], md5.string) == 0) { if (strcmp(cmd->args[2], md5.hexdigest) == 0) {
conn->flags |= CSOCKET_CONN_AUTH_OK; conn->flags |= CSOCKET_CONN_AUTH_OK;
f2b_buf_append(&conn->send, "+ok\n", 0); f2b_buf_append(&conn->send, "+ok\n", 0);
return true; return true;

515
src/md5.c
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@ -1,282 +1,295 @@
/* /*
********************************************************************** * This code implements the MD5 message-digest algorithm.
** md5.c ** * The algorithm is due to Ron Rivest. This code was
** RSA Data Security, Inc. MD5 Message Digest Algorithm ** * written by Colin Plumb in 1993, no copyright is claimed.
** Created: 2/17/90 RLR ** * This code is in the public domain; do with it what you wish.
** Revised: 1/91 SRD,AJ,BSK,JT Reference C Version ** *
********************************************************************** * 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.
*
* 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.
*/ */
/* /* This code was modified in 1997 by Jim Kingdon of Cyclic Software to
********************************************************************** not require an integer type which is exactly 32 bits. This work
** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. ** draws on the changes for the same purpose by Tatu Ylonen
** ** <ylo@cs.hut.fi> as part of SSH, but since I didn't actually use
** License to copy and use this software is granted provided that ** that code, there is no copyright issue. I hereby disclaim
** it is identified as the "RSA Data Security, Inc. MD5 Message ** copyright in any changes I have made; this code remains in the
** Digest Algorithm" in all material mentioning or referencing this ** public domain. */
** software or this function. **
** **
** License is also granted to make and use derivative works **
** provided that such works are identified as "derived from the RSA **
** Data Security, Inc. MD5 Message Digest Algorithm" in all **
** material mentioning or referencing the derived work. **
** **
** RSA Data Security, Inc. makes no representations concerning **
** either the merchantability of this software or the suitability **
** of this software for any particular purpose. It is provided "as **
** is" without express or implied warranty of any kind. **
** **
** These notices must be retained in any copies of any part of this **
** documentation and/or software. **
**********************************************************************
*/
/* -- include the following line if the md5.h header file is separate -- */
#include "md5.h"
#include <stdio.h> /* sprintf */ #include <stdio.h> /* sprintf */
#include <string.h> /* for memcpy() */
/* forward declaration */ /* Add prototype support. */
static void Transform (); #ifndef PROTO
#if defined (USE_PROTOTYPES) ? USE_PROTOTYPES : defined (__STDC__)
static unsigned char PADDING[64] = { #define PROTO(ARGS) ARGS
0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, #else
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, #define PROTO(ARGS) ()
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, #endif
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, #endif
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, #include "md5.h"
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 /* Little-endian byte-swapping routines. Note that these do not
}; depend on the size of datatypes such as uint32, nor do they require
us to detect the endianness of the machine we are running on. It
/* F, G and H are basic MD5 functions: selection, majority, parity */ is possible they should be macros for speed, but I would be
#define F(x, y, z) (((x) & (y)) | ((~x) & (z))) surprised if they were a performance bottleneck for MD5. */
#define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
#define H(x, y, z) ((x) ^ (y) ^ (z)) static uint32
#define I(x, y, z) ((y) ^ ((x) | (~z))) getu32 (addr)
const unsigned char *addr;
/* ROTATE_LEFT rotates x left n bits */ {
#define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n)))) return (((((unsigned long)addr[3] << 8) | addr[2]) << 8)
| addr[1]) << 8 | addr[0];
/* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4 */
/* Rotation is separate from addition to prevent recomputation */
#define FF(a, b, c, d, x, s, ac) \
{(a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define GG(a, b, c, d, x, s, ac) \
{(a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define HH(a, b, c, d, x, s, ac) \
{(a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
}
#define II(a, b, c, d, x, s, ac) \
{(a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
(a) = ROTATE_LEFT ((a), (s)); \
(a) += (b); \
} }
void MD5Init (mdContext) static void
MD5_CTX *mdContext; putu32 (data, addr)
uint32 data;
unsigned char *addr;
{ {
mdContext->i[0] = mdContext->i[1] = (UINT4)0; addr[0] = (unsigned char)data;
addr[1] = (unsigned char)(data >> 8);
addr[2] = (unsigned char)(data >> 16);
addr[3] = (unsigned char)(data >> 24);
}
/* Load magic initialization constants. /*
* Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
* initialization constants.
*/ */
mdContext->buf[0] = (UINT4)0x67452301; void
mdContext->buf[1] = (UINT4)0xefcdab89; MD5Init(ctx)
mdContext->buf[2] = (UINT4)0x98badcfe; struct MD5Context *ctx;
mdContext->buf[3] = (UINT4)0x10325476; {
memset(ctx, 0, sizeof(struct MD5Context)); /* In case it's sensitive */
ctx->buf[0] = 0x67452301;
ctx->buf[1] = 0xefcdab89;
ctx->buf[2] = 0x98badcfe;
ctx->buf[3] = 0x10325476;
ctx->bits[0] = 0;
ctx->bits[1] = 0;
} }
void MD5Update (mdContext, inBuf, inLen) /*
MD5_CTX *mdContext; * Update context to reflect the concatenation of another buffer full
unsigned char *inBuf; * of bytes.
unsigned int inLen; */
void
MD5Update(ctx, buf, len)
struct MD5Context *ctx;
unsigned char const *buf;
unsigned len;
{ {
UINT4 in[16]; uint32 t;
int mdi;
unsigned int i, ii; /* Update bitcount */
/* compute number of bytes mod 64 */ t = ctx->bits[0];
mdi = (int)((mdContext->i[0] >> 3) & 0x3F); if ((ctx->bits[0] = (t + ((uint32)len << 3)) & 0xffffffff) < t)
ctx->bits[1]++; /* Carry from low to high */
/* update number of bits */ ctx->bits[1] += len >> 29;
if ((mdContext->i[0] + ((UINT4)inLen << 3)) < mdContext->i[0])
mdContext->i[1]++; t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
mdContext->i[0] += ((UINT4)inLen << 3);
mdContext->i[1] += ((UINT4)inLen >> 29); /* Handle any leading odd-sized chunks */
while (inLen--) { if ( t ) {
/* add new character to buffer, increment mdi */ unsigned char *p = ctx->in + t;
mdContext->in[mdi++] = *inBuf++;
t = 64-t;
/* transform if necessary */ if (len < t) {
if (mdi == 0x40) { memcpy(p, buf, len);
for (i = 0, ii = 0; i < 16; i++, ii += 4) return;
in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | }
(((UINT4)mdContext->in[ii+2]) << 16) | memcpy(p, buf, t);
(((UINT4)mdContext->in[ii+1]) << 8) | MD5Transform(ctx->buf, ctx->in);
((UINT4)mdContext->in[ii]); buf += t;
Transform (mdContext->buf, in); len -= t;
mdi = 0;
} }
/* Process data in 64-byte chunks */
while (len >= 64) {
memcpy(ctx->in, buf, 64);
MD5Transform(ctx->buf, ctx->in);
buf += 64;
len -= 64;
} }
/* Handle any remaining bytes of data. */
memcpy(ctx->in, buf, len);
} }
void MD5Final (mdContext) /*
MD5_CTX *mdContext; * Final wrapup - pad to 64-byte boundary with the bit pattern
* 1 0* (64-bit count of bits processed, MSB-first)
*/
void
MD5Final(ctx)
struct MD5Context *ctx;
{ {
UINT4 in[16]; unsigned count;
int mdi; unsigned char *p;
unsigned int i, ii;
unsigned int padLen; /* Compute number of bytes mod 64 */
count = (ctx->bits[0] >> 3) & 0x3F;
/* save number of bits */
in[14] = mdContext->i[0]; /* Set the first char of padding to 0x80. This is safe since there is
in[15] = mdContext->i[1]; always at least one byte free */
p = ctx->in + count;
/* compute number of bytes mod 64 */ *p++ = 0x80;
mdi = (int)((mdContext->i[0] >> 3) & 0x3F);
/* Bytes of padding needed to make 64 bytes */
/* pad out to 56 mod 64 */ count = 64 - 1 - count;
padLen = (mdi < 56) ? (56 - mdi) : (120 - mdi);
MD5Update (mdContext, PADDING, padLen); /* Pad out to 56 mod 64 */
if (count < 8) {
/* append length in bits and transform */ /* Two lots of padding: Pad the first block to 64 bytes */
for (i = 0, ii = 0; i < 14; i++, ii += 4) memset(p, 0, count);
in[i] = (((UINT4)mdContext->in[ii+3]) << 24) | MD5Transform(ctx->buf, ctx->in);
(((UINT4)mdContext->in[ii+2]) << 16) |
(((UINT4)mdContext->in[ii+1]) << 8) | /* Now fill the next block with 56 bytes */
((UINT4)mdContext->in[ii]); memset(ctx->in, 0, 56);
Transform (mdContext->buf, in); } else {
/* Pad block to 56 bytes */
/* store buffer in digest */ memset(p, 0, count-8);
for (i = 0, ii = 0; i < 4; i++, ii += 4) {
mdContext->digest[ii] = (unsigned char)(mdContext->buf[i] & 0xFF);
mdContext->digest[ii+1] =
(unsigned char)((mdContext->buf[i] >> 8) & 0xFF);
mdContext->digest[ii+2] =
(unsigned char)((mdContext->buf[i] >> 16) & 0xFF);
mdContext->digest[ii+3] =
(unsigned char)((mdContext->buf[i] >> 24) & 0xFF);
} }
/* added: generate hex-string */ /* Append length in bits and transform */
for (i = 0; i < 16; i++) putu32(ctx->bits[0], ctx->in + 56);
sprintf(&mdContext->string[i * 2], "%02x", mdContext->digest[i]); putu32(ctx->bits[1], ctx->in + 60);
mdContext->string[32] = '\0';
MD5Transform(ctx->buf, ctx->in);
/* calculate digest */
putu32(ctx->buf[0], ctx->digest);
putu32(ctx->buf[1], ctx->digest + 4);
putu32(ctx->buf[2], ctx->digest + 8);
putu32(ctx->buf[3], ctx->digest + 12);
/* calculate hexdigest */
for (short int i = 0; i < 16; i++) {
sprintf(&ctx->hexdigest[i * 2], "%02x", ctx->digest[i]);
}
} }
/* Basic MD5 step. Transform buf based on in. #ifndef ASM_MD5
/* 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 &= 0xffffffff, w = w<<s | w>>(32-s), w += x )
/*
* 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 (buf, in) void
UINT4 *buf; MD5Transform(buf, inraw)
UINT4 *in; uint32 buf[4];
const unsigned char inraw[64];
{ {
UINT4 a = buf[0], b = buf[1], c = buf[2], d = buf[3]; register uint32 a, b, c, d;
uint32 in[16];
/* Round 1 */ int i;
#define S11 7
#define S12 12 for (i = 0; i < 16; ++i)
#define S13 17 in[i] = getu32 (inraw + 4 * i);
#define S14 22
FF ( a, b, c, d, in[ 0], S11, 3614090360); /* 1 */ a = buf[0];
FF ( d, a, b, c, in[ 1], S12, 3905402710); /* 2 */ b = buf[1];
FF ( c, d, a, b, in[ 2], S13, 606105819); /* 3 */ c = buf[2];
FF ( b, c, d, a, in[ 3], S14, 3250441966); /* 4 */ d = buf[3];
FF ( a, b, c, d, in[ 4], S11, 4118548399); /* 5 */
FF ( d, a, b, c, in[ 5], S12, 1200080426); /* 6 */ MD5STEP(F1, a, b, c, d, in[ 0]+0xd76aa478, 7);
FF ( c, d, a, b, in[ 6], S13, 2821735955); /* 7 */ MD5STEP(F1, d, a, b, c, in[ 1]+0xe8c7b756, 12);
FF ( b, c, d, a, in[ 7], S14, 4249261313); /* 8 */ MD5STEP(F1, c, d, a, b, in[ 2]+0x242070db, 17);
FF ( a, b, c, d, in[ 8], S11, 1770035416); /* 9 */ MD5STEP(F1, b, c, d, a, in[ 3]+0xc1bdceee, 22);
FF ( d, a, b, c, in[ 9], S12, 2336552879); /* 10 */ MD5STEP(F1, a, b, c, d, in[ 4]+0xf57c0faf, 7);
FF ( c, d, a, b, in[10], S13, 4294925233); /* 11 */ MD5STEP(F1, d, a, b, c, in[ 5]+0x4787c62a, 12);
FF ( b, c, d, a, in[11], S14, 2304563134); /* 12 */ MD5STEP(F1, c, d, a, b, in[ 6]+0xa8304613, 17);
FF ( a, b, c, d, in[12], S11, 1804603682); /* 13 */ MD5STEP(F1, b, c, d, a, in[ 7]+0xfd469501, 22);
FF ( d, a, b, c, in[13], S12, 4254626195); /* 14 */ MD5STEP(F1, a, b, c, d, in[ 8]+0x698098d8, 7);
FF ( c, d, a, b, in[14], S13, 2792965006); /* 15 */ MD5STEP(F1, d, a, b, c, in[ 9]+0x8b44f7af, 12);
FF ( b, c, d, a, in[15], S14, 1236535329); /* 16 */ MD5STEP(F1, c, d, a, b, in[10]+0xffff5bb1, 17);
MD5STEP(F1, b, c, d, a, in[11]+0x895cd7be, 22);
/* Round 2 */ MD5STEP(F1, a, b, c, d, in[12]+0x6b901122, 7);
#define S21 5 MD5STEP(F1, d, a, b, c, in[13]+0xfd987193, 12);
#define S22 9 MD5STEP(F1, c, d, a, b, in[14]+0xa679438e, 17);
#define S23 14 MD5STEP(F1, b, c, d, a, in[15]+0x49b40821, 22);
#define S24 20
GG ( a, b, c, d, in[ 1], S21, 4129170786); /* 17 */ MD5STEP(F2, a, b, c, d, in[ 1]+0xf61e2562, 5);
GG ( d, a, b, c, in[ 6], S22, 3225465664); /* 18 */ MD5STEP(F2, d, a, b, c, in[ 6]+0xc040b340, 9);
GG ( c, d, a, b, in[11], S23, 643717713); /* 19 */ MD5STEP(F2, c, d, a, b, in[11]+0x265e5a51, 14);
GG ( b, c, d, a, in[ 0], S24, 3921069994); /* 20 */ MD5STEP(F2, b, c, d, a, in[ 0]+0xe9b6c7aa, 20);
GG ( a, b, c, d, in[ 5], S21, 3593408605); /* 21 */ MD5STEP(F2, a, b, c, d, in[ 5]+0xd62f105d, 5);
GG ( d, a, b, c, in[10], S22, 38016083); /* 22 */ MD5STEP(F2, d, a, b, c, in[10]+0x02441453, 9);
GG ( c, d, a, b, in[15], S23, 3634488961); /* 23 */ MD5STEP(F2, c, d, a, b, in[15]+0xd8a1e681, 14);
GG ( b, c, d, a, in[ 4], S24, 3889429448); /* 24 */ MD5STEP(F2, b, c, d, a, in[ 4]+0xe7d3fbc8, 20);
GG ( a, b, c, d, in[ 9], S21, 568446438); /* 25 */ MD5STEP(F2, a, b, c, d, in[ 9]+0x21e1cde6, 5);
GG ( d, a, b, c, in[14], S22, 3275163606); /* 26 */ MD5STEP(F2, d, a, b, c, in[14]+0xc33707d6, 9);
GG ( c, d, a, b, in[ 3], S23, 4107603335); /* 27 */ MD5STEP(F2, c, d, a, b, in[ 3]+0xf4d50d87, 14);
GG ( b, c, d, a, in[ 8], S24, 1163531501); /* 28 */ MD5STEP(F2, b, c, d, a, in[ 8]+0x455a14ed, 20);
GG ( a, b, c, d, in[13], S21, 2850285829); /* 29 */ MD5STEP(F2, a, b, c, d, in[13]+0xa9e3e905, 5);
GG ( d, a, b, c, in[ 2], S22, 4243563512); /* 30 */ MD5STEP(F2, d, a, b, c, in[ 2]+0xfcefa3f8, 9);
GG ( c, d, a, b, in[ 7], S23, 1735328473); /* 31 */ MD5STEP(F2, c, d, a, b, in[ 7]+0x676f02d9, 14);
GG ( b, c, d, a, in[12], S24, 2368359562); /* 32 */ MD5STEP(F2, b, c, d, a, in[12]+0x8d2a4c8a, 20);
/* Round 3 */ MD5STEP(F3, a, b, c, d, in[ 5]+0xfffa3942, 4);
#define S31 4 MD5STEP(F3, d, a, b, c, in[ 8]+0x8771f681, 11);
#define S32 11 MD5STEP(F3, c, d, a, b, in[11]+0x6d9d6122, 16);
#define S33 16 MD5STEP(F3, b, c, d, a, in[14]+0xfde5380c, 23);
#define S34 23 MD5STEP(F3, a, b, c, d, in[ 1]+0xa4beea44, 4);
HH ( a, b, c, d, in[ 5], S31, 4294588738); /* 33 */ MD5STEP(F3, d, a, b, c, in[ 4]+0x4bdecfa9, 11);
HH ( d, a, b, c, in[ 8], S32, 2272392833); /* 34 */ MD5STEP(F3, c, d, a, b, in[ 7]+0xf6bb4b60, 16);
HH ( c, d, a, b, in[11], S33, 1839030562); /* 35 */ MD5STEP(F3, b, c, d, a, in[10]+0xbebfbc70, 23);
HH ( b, c, d, a, in[14], S34, 4259657740); /* 36 */ MD5STEP(F3, a, b, c, d, in[13]+0x289b7ec6, 4);
HH ( a, b, c, d, in[ 1], S31, 2763975236); /* 37 */ MD5STEP(F3, d, a, b, c, in[ 0]+0xeaa127fa, 11);
HH ( d, a, b, c, in[ 4], S32, 1272893353); /* 38 */ MD5STEP(F3, c, d, a, b, in[ 3]+0xd4ef3085, 16);
HH ( c, d, a, b, in[ 7], S33, 4139469664); /* 39 */ MD5STEP(F3, b, c, d, a, in[ 6]+0x04881d05, 23);
HH ( b, c, d, a, in[10], S34, 3200236656); /* 40 */ MD5STEP(F3, a, b, c, d, in[ 9]+0xd9d4d039, 4);
HH ( a, b, c, d, in[13], S31, 681279174); /* 41 */ MD5STEP(F3, d, a, b, c, in[12]+0xe6db99e5, 11);
HH ( d, a, b, c, in[ 0], S32, 3936430074); /* 42 */ MD5STEP(F3, c, d, a, b, in[15]+0x1fa27cf8, 16);
HH ( c, d, a, b, in[ 3], S33, 3572445317); /* 43 */ MD5STEP(F3, b, c, d, a, in[ 2]+0xc4ac5665, 23);
HH ( b, c, d, a, in[ 6], S34, 76029189); /* 44 */
HH ( a, b, c, d, in[ 9], S31, 3654602809); /* 45 */ MD5STEP(F4, a, b, c, d, in[ 0]+0xf4292244, 6);
HH ( d, a, b, c, in[12], S32, 3873151461); /* 46 */ MD5STEP(F4, d, a, b, c, in[ 7]+0x432aff97, 10);
HH ( c, d, a, b, in[15], S33, 530742520); /* 47 */ MD5STEP(F4, c, d, a, b, in[14]+0xab9423a7, 15);
HH ( b, c, d, a, in[ 2], S34, 3299628645); /* 48 */ MD5STEP(F4, b, c, d, a, in[ 5]+0xfc93a039, 21);
MD5STEP(F4, a, b, c, d, in[12]+0x655b59c3, 6);
/* Round 4 */ MD5STEP(F4, d, a, b, c, in[ 3]+0x8f0ccc92, 10);
#define S41 6 MD5STEP(F4, c, d, a, b, in[10]+0xffeff47d, 15);
#define S42 10 MD5STEP(F4, b, c, d, a, in[ 1]+0x85845dd1, 21);
#define S43 15 MD5STEP(F4, a, b, c, d, in[ 8]+0x6fa87e4f, 6);
#define S44 21 MD5STEP(F4, d, a, b, c, in[15]+0xfe2ce6e0, 10);
II ( a, b, c, d, in[ 0], S41, 4096336452); /* 49 */ MD5STEP(F4, c, d, a, b, in[ 6]+0xa3014314, 15);
II ( d, a, b, c, in[ 7], S42, 1126891415); /* 50 */ MD5STEP(F4, b, c, d, a, in[13]+0x4e0811a1, 21);
II ( c, d, a, b, in[14], S43, 2878612391); /* 51 */ MD5STEP(F4, a, b, c, d, in[ 4]+0xf7537e82, 6);
II ( b, c, d, a, in[ 5], S44, 4237533241); /* 52 */ MD5STEP(F4, d, a, b, c, in[11]+0xbd3af235, 10);
II ( a, b, c, d, in[12], S41, 1700485571); /* 53 */ MD5STEP(F4, c, d, a, b, in[ 2]+0x2ad7d2bb, 15);
II ( d, a, b, c, in[ 3], S42, 2399980690); /* 54 */ MD5STEP(F4, b, c, d, a, in[ 9]+0xeb86d391, 21);
II ( c, d, a, b, in[10], S43, 4293915773); /* 55 */
II ( b, c, d, a, in[ 1], S44, 2240044497); /* 56 */
II ( a, b, c, d, in[ 8], S41, 1873313359); /* 57 */
II ( d, a, b, c, in[15], S42, 4264355552); /* 58 */
II ( c, d, a, b, in[ 6], S43, 2734768916); /* 59 */
II ( b, c, d, a, in[13], S44, 1309151649); /* 60 */
II ( a, b, c, d, in[ 4], S41, 4149444226); /* 61 */
II ( d, a, b, c, in[11], S42, 3174756917); /* 62 */
II ( c, d, a, b, in[ 2], S43, 718787259); /* 63 */
II ( b, c, d, a, in[ 9], S44, 3951481745); /* 64 */
buf[0] += a; buf[0] += a;
buf[1] += b; buf[1] += b;
buf[2] += c; buf[2] += c;
buf[3] += d; buf[3] += d;
} }
#endif
/*
**********************************************************************
** End of md5.c **
******************************* (cut) ********************************
*/

77
src/md5.h
Unescape View File

@ -1,60 +1,31 @@
/* /* See md5.c for explanation and copyright information. */
**********************************************************************
** md5.h -- Header file for implementation of MD5 **
** RSA Data Security, Inc. MD5 Message Digest Algorithm **
** Created: 2/17/90 RLR **
** Revised: 12/27/90 SRD,AJ,BSK,JT Reference C version **
** Revised (for MD5): RLR 4/27/91 **
** -- G modified to have y&~z instead of y&z **
** -- FF, GG, HH modified to add in last register done **
** -- Access pattern: round 2 works mod 5, round 3 works mod 3 **
** -- distinct additive constant for each step **
** -- round 4 added, working mod 7 **
**********************************************************************
*/
/* #ifndef MD5_H
********************************************************************** #define MD5_H
** Copyright (C) 1990, RSA Data Security, Inc. All rights reserved. **
** **
** License to copy and use this software is granted provided that **
** it is identified as the "RSA Data Security, Inc. MD5 Message **
** Digest Algorithm" in all material mentioning or referencing this **
** software or this function. **
** **
** License is also granted to make and use derivative works **
** provided that such works are identified as "derived from the RSA **
** Data Security, Inc. MD5 Message Digest Algorithm" in all **
** material mentioning or referencing the derived work. **
** **
** RSA Data Security, Inc. makes no representations concerning **
** either the merchantability of this software or the suitability **
** of this software for any particular purpose. It is provided "as **
** is" without express or implied warranty of any kind. **
** **
** These notices must be retained in any copies of any part of this **
** documentation and/or software. **
**********************************************************************
*/
/* typedef a 32 bit type */ /* Unlike previous versions of this code, uint32 need not be exactly
typedef unsigned long int UINT4; 32 bits, merely 32 bits or more. Choosing a data type which is 32
bits instead of 64 is not important; speed is considerably more
important. ANSI guarantees that "unsigned long" will be big enough,
and always using it seems to have few disadvantages. */
typedef unsigned long uint32;
/* Data structure for MD5 (Message Digest) computation */ struct MD5Context {
typedef struct { uint32 buf[4];
UINT4 i[2]; /* number of _bits_ handled mod 2^64 */ uint32 bits[2];
UINT4 buf[4]; /* scratch buffer */ unsigned char in[64];
unsigned char in[64]; /* input buffer */ unsigned char digest[16]; /*< added for usability */
unsigned char digest[16]; /* actual digest after MD5Final call */ char hexdigest[33]; /*< added for usability */
char string[34]; /* same as above but in hex-form */ };
} MD5_CTX;
void MD5Init (); void MD5Init (struct MD5Context *context); /* modified: zortes context before use */
void MD5Update (); void MD5Update (struct MD5Context *context, unsigned char const *buf, unsigned len);
void MD5Final (); void MD5Final (struct MD5Context *context); /* modified: dropped outparam 'digest', fills 'digest' and 'hexdigest' fields in context */
void MD5Transform (uint32 buf[4], const unsigned char in[64]);
/* /*
********************************************************************** * This is needed to make RSAREF happy on some MS-DOS compilers.
** End of md5.h **
******************************* (cut) ********************************
*/ */
typedef struct MD5Context MD5_CTX;
#endif /* !MD5_H */

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