|
0
|
1 /*
|
|
|
2 * This code implements the MD5 message-digest algorithm.
|
|
|
3 * The algorithm is due to Ron Rivest. This code was
|
|
|
4 * written by Colin Plumb in 1993, no copyright is claimed.
|
|
|
5 * This code is in the public domain; do with it what you wish.
|
|
|
6 *
|
|
|
7 * Equivalent code is available from RSA Data Security, Inc.
|
|
|
8 * This code has been tested against that, and is equivalent,
|
|
|
9 * except that you don't need to include two pages of legalese
|
|
|
10 * with every copy.
|
|
|
11 *
|
|
|
12 * To compute the message digest of a chunk of bytes, declare an
|
|
|
13 * MD5Context structure, pass it to MD5Init, call MD5Update as
|
|
|
14 * needed on buffers full of bytes, and then call MD5Final, which
|
|
|
15 * will fill a supplied 16-byte array with the digest.
|
|
|
16 */
|
|
|
17
|
|
|
18 /* Brutally hacked by John Walker back from ANSI C to K&R (no
|
|
|
19 prototypes) to maintain the tradition that Netfone will compile
|
|
|
20 with Sun's original "cc". */
|
|
|
21
|
|
|
22 #include <string.h>
|
|
|
23 #include "md5.h"
|
|
|
24
|
|
|
25 #ifndef HIGHFIRST
|
|
|
26 #define byteReverse(buf, len) /* Nothing */
|
|
|
27 #else
|
|
|
28 /*
|
|
|
29 * Note: this code is harmless on little-endian machines.
|
|
|
30 */
|
|
|
31 void byteReverse(buf, longs)
|
|
|
32 unsigned char *buf; unsigned longs;
|
|
|
33 {
|
|
|
34 uint32_t t;
|
|
|
35 do {
|
|
|
36 t = (uint32_t) ((unsigned) buf[3] << 8 | buf[2]) << 16 |
|
|
|
37 ((unsigned) buf[1] << 8 | buf[0]);
|
|
|
38 *(uint32_t *) buf = t;
|
|
|
39 buf += 4;
|
|
|
40 } while (--longs);
|
|
|
41 }
|
|
|
42 #endif
|
|
|
43
|
|
|
44 void MD5Transform(uint32_t buf[4], uint32_t in[16]);
|
|
|
45
|
|
|
46
|
|
|
47 /*
|
|
|
48 * Start MD5 accumulation. Set bit count to 0 and buffer to mysterious
|
|
|
49 * initialization constants.
|
|
|
50 */
|
|
|
51 void MD5Init(ctx)
|
|
|
52 struct MD5Context *ctx;
|
|
|
53 {
|
|
|
54 ctx->buf[0] = 0x67452301;
|
|
|
55 ctx->buf[1] = 0xefcdab89;
|
|
|
56 ctx->buf[2] = 0x98badcfe;
|
|
|
57 ctx->buf[3] = 0x10325476;
|
|
|
58
|
|
|
59 ctx->bits[0] = 0;
|
|
|
60 ctx->bits[1] = 0;
|
|
|
61 }
|
|
|
62
|
|
|
63 /*
|
|
|
64 * Update context to reflect the concatenation of another buffer full
|
|
|
65 * of bytes.
|
|
|
66 */
|
|
|
67 void MD5Update(ctx, buf, len)
|
|
|
68 struct MD5Context *ctx; unsigned char *buf; unsigned len;
|
|
|
69 {
|
|
|
70 uint32_t t;
|
|
|
71
|
|
|
72 /* Update bitcount */
|
|
|
73
|
|
|
74 t = ctx->bits[0];
|
|
|
75 if ((ctx->bits[0] = t + ((uint32_t) len << 3)) < t)
|
|
|
76 ctx->bits[1]++; /* Carry from low to high */
|
|
|
77 ctx->bits[1] += len >> 29;
|
|
|
78
|
|
|
79 t = (t >> 3) & 0x3f; /* Bytes already in shsInfo->data */
|
|
|
80
|
|
|
81 /* Handle any leading odd-sized chunks */
|
|
|
82
|
|
|
83 if (t) {
|
|
|
84 unsigned char *p = (unsigned char *) ctx->in + t;
|
|
|
85
|
|
|
86 t = 64 - t;
|
|
|
87 if (len < t) {
|
|
|
88 memcpy(p, buf, len);
|
|
|
89 return;
|
|
|
90 }
|
|
|
91 memcpy(p, buf, t);
|
|
|
92 byteReverse(ctx->in, 16);
|
|
|
93 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
|
|
|
94 buf += t;
|
|
|
95 len -= t;
|
|
|
96 }
|
|
|
97 /* Process data in 64-byte chunks */
|
|
|
98
|
|
|
99 while (len >= 64) {
|
|
|
100 memcpy(ctx->in, buf, 64);
|
|
|
101 byteReverse(ctx->in, 16);
|
|
|
102 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
|
|
|
103 buf += 64;
|
|
|
104 len -= 64;
|
|
|
105 }
|
|
|
106
|
|
|
107 /* Handle any remaining bytes of data. */
|
|
|
108
|
|
|
109 memcpy(ctx->in, buf, len);
|
|
|
110 }
|
|
|
111
|
|
|
112 /*
|
|
|
113 * Final wrapup - pad to 64-byte boundary with the bit pattern
|
|
|
114 * 1 0* (64-bit count of bits processed, MSB-first)
|
|
|
115 */
|
|
|
116 void MD5Final(digest, ctx)
|
|
|
117 unsigned char digest[16]; struct MD5Context *ctx;
|
|
|
118 {
|
|
|
119 unsigned count;
|
|
|
120 unsigned char *p;
|
|
|
121
|
|
|
122 /* Compute number of bytes mod 64 */
|
|
|
123 count = (ctx->bits[0] >> 3) & 0x3F;
|
|
|
124
|
|
|
125 /* Set the first char of padding to 0x80. This is safe since there is
|
|
|
126 always at least one byte free */
|
|
|
127 p = ctx->in + count;
|
|
|
128 *p++ = 0x80;
|
|
|
129
|
|
|
130 /* Bytes of padding needed to make 64 bytes */
|
|
|
131 count = 64 - 1 - count;
|
|
|
132
|
|
|
133 /* Pad out to 56 mod 64 */
|
|
|
134 if (count < 8) {
|
|
|
135 /* Two lots of padding: Pad the first block to 64 bytes */
|
|
|
136 memset(p, 0, count);
|
|
|
137 byteReverse(ctx->in, 16);
|
|
|
138 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
|
|
|
139
|
|
|
140 /* Now fill the next block with 56 bytes */
|
|
|
141 memset(ctx->in, 0, 56);
|
|
|
142 } else {
|
|
|
143 /* Pad block to 56 bytes */
|
|
|
144 memset(p, 0, count - 8);
|
|
|
145 }
|
|
|
146 byteReverse(ctx->in, 14);
|
|
|
147
|
|
|
148 /* Append length in bits and transform */
|
|
|
149 ((uint32_t *) ctx->in)[14] = ctx->bits[0];
|
|
|
150 ((uint32_t *) ctx->in)[15] = ctx->bits[1];
|
|
|
151
|
|
|
152 MD5Transform(ctx->buf, (uint32_t *) ctx->in);
|
|
|
153 byteReverse((unsigned char *) ctx->buf, 4);
|
|
|
154 memcpy(digest, ctx->buf, 16);
|
|
|
155 memset(ctx, 0, sizeof(ctx)); /* In case it's sensitive */
|
|
|
156 }
|
|
|
157
|
|
|
158
|
|
|
159 /* The four core functions - F1 is optimized somewhat */
|
|
|
160
|
|
|
161 /* #define F1(x, y, z) (x & y | ~x & z) */
|
|
|
162 #define F1(x, y, z) (z ^ (x & (y ^ z)))
|
|
|
163 #define F2(x, y, z) F1(z, x, y)
|
|
|
164 #define F3(x, y, z) (x ^ y ^ z)
|
|
|
165 #define F4(x, y, z) (y ^ (x | ~z))
|
|
|
166
|
|
|
167 /* This is the central step in the MD5 algorithm. */
|
|
|
168 #define MD5STEP(f, w, x, y, z, data, s) \
|
|
|
169 ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )
|
|
|
170
|
|
|
171 /*
|
|
|
172 * The core of the MD5 algorithm, this alters an existing MD5 hash to
|
|
|
173 * reflect the addition of 16 longwords of new data. MD5Update blocks
|
|
|
174 * the data and converts bytes into longwords for this routine.
|
|
|
175 */
|
|
|
176 void MD5Transform(buf, in)
|
|
|
177 uint32_t buf[4]; uint32_t in[16];
|
|
|
178 {
|
|
|
179 register uint32_t a, b, c, d;
|
|
|
180
|
|
|
181 a = buf[0];
|
|
|
182 b = buf[1];
|
|
|
183 c = buf[2];
|
|
|
184 d = buf[3];
|
|
|
185
|
|
|
186 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);
|
|
|
187 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);
|
|
|
188 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);
|
|
|
189 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);
|
|
|
190 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);
|
|
|
191 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);
|
|
|
192 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);
|
|
|
193 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);
|
|
|
194 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);
|
|
|
195 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);
|
|
|
196 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);
|
|
|
197 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);
|
|
|
198 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);
|
|
|
199 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);
|
|
|
200 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);
|
|
|
201 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);
|
|
|
202
|
|
|
203 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);
|
|
|
204 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);
|
|
|
205 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);
|
|
|
206 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);
|
|
|
207 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);
|
|
|
208 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);
|
|
|
209 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);
|
|
|
210 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);
|
|
|
211 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);
|
|
|
212 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);
|
|
|
213 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);
|
|
|
214 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);
|
|
|
215 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);
|
|
|
216 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);
|
|
|
217 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);
|
|
|
218 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);
|
|
|
219
|
|
|
220 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);
|
|
|
221 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);
|
|
|
222 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);
|
|
|
223 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);
|
|
|
224 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);
|
|
|
225 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);
|
|
|
226 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);
|
|
|
227 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);
|
|
|
228 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);
|
|
|
229 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);
|
|
|
230 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);
|
|
|
231 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);
|
|
|
232 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);
|
|
|
233 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);
|
|
|
234 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);
|
|
|
235 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);
|
|
|
236
|
|
|
237 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);
|
|
|
238 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);
|
|
|
239 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);
|
|
|
240 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);
|
|
|
241 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);
|
|
|
242 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);
|
|
|
243 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);
|
|
|
244 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);
|
|
|
245 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);
|
|
|
246 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);
|
|
|
247 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);
|
|
|
248 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);
|
|
|
249 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);
|
|
|
250 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);
|
|
|
251 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);
|
|
|
252 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);
|
|
|
253
|
|
|
254 buf[0] += a;
|
|
|
255 buf[1] += b;
|
|
|
256 buf[2] += c;
|
|
|
257 buf[3] += d;
|
|
|
258 }
|
|
|
259
|
|
|
260 /* lh3: the following code is added by me */
|
|
|
261
|
|
|
262 #ifdef MD5SUM_MAIN
|
|
|
263 #include <stdio.h>
|
|
|
264 #include <stdlib.h>
|
|
|
265 #include <string.h>
|
|
|
266 #define HEX_STR "0123456789abcdef"
|
|
|
267
|
|
|
268 static void md5_one(const char *fn)
|
|
|
269 {
|
|
|
270 unsigned char buf[4096], digest[16];
|
|
|
271 MD5_CTX md5;
|
|
|
272 int l;
|
|
|
273 FILE *fp;
|
|
|
274
|
|
|
275 fp = strcmp(fn, "-")? fopen(fn, "r") : stdin;
|
|
|
276 if (fp == 0) {
|
|
|
277 fprintf(stderr, "md5sum: %s: No such file or directory\n", fn);
|
|
|
278 exit(1);
|
|
|
279 }
|
|
|
280 MD5Init(&md5);
|
|
|
281 while ((l = fread(buf, 1, 4096, fp)) > 0)
|
|
|
282 MD5Update(&md5, buf, l);
|
|
|
283 MD5Final(digest, &md5);
|
|
|
284 if (fp != stdin) fclose(fp);
|
|
|
285 for (l = 0; l < 16; ++l)
|
|
|
286 printf("%c%c", HEX_STR[digest[l]>>4&0xf], HEX_STR[digest[l]&0xf]);
|
|
|
287 printf(" %s\n", fn);
|
|
|
288 }
|
|
|
289 int main(int argc, char *argv[])
|
|
|
290 {
|
|
|
291 int i;
|
|
|
292 if (argc == 1) md5_one("-");
|
|
|
293 else for (i = 1; i < argc; ++i) md5_one(argv[i]);
|
|
|
294 return 0;
|
|
|
295 }
|
|
|
296 #endif
|
