1 /***************************************************************************
3 * Project ___| | | | _ \| |
5 * | (__| |_| | _ <| |___
6 * \___|\___/|_| \_\_____|
8 * Copyright (C) 1998 - 2003, Daniel Stenberg, <daniel@haxx.se>, et al.
10 * This software is licensed as described in the file COPYING, which
11 * you should have received as part of this distribution. The terms
12 * are also available at http://curl.haxx.se/docs/copyright.html.
14 * You may opt to use, copy, modify, merge, publish, distribute and/or sell
15 * copies of the Software, and permit persons to whom the Software is
16 * furnished to do so, under the terms of the COPYING file.
18 * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
19 * KIND, either express or implied.
22 ***************************************************************************/
27 /* This code segment is only used if OpenSSL is not provided, as if it is
28 we use the MD5-function provided there instead. No good duplicating
31 /* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
34 License to copy and use this software is granted provided that it
35 is identified as the "RSA Data Security, Inc. MD5 Message-Digest
36 Algorithm" in all material mentioning or referencing this software
39 License is also granted to make and use derivative works provided
40 that such works are identified as "derived from the RSA Data
41 Security, Inc. MD5 Message-Digest Algorithm" in all material
42 mentioning or referencing the derived work.
44 RSA Data Security, Inc. makes no representations concerning either
45 the merchantability of this software or the suitability of this
46 software for any particular purpose. It is provided "as is"
47 without express or implied warranty of any kind.
49 These notices must be retained in any copies of any part of this
50 documentation and/or software.
55 /* UINT4 defines a four byte word */
56 typedef unsigned int UINT4;
60 UINT4 state[4]; /* state (ABCD) */
61 UINT4 count[2]; /* number of bits, modulo 2^64 (lsb first) */
62 unsigned char buffer[64]; /* input buffer */
65 typedef struct md5_ctx MD5_CTX;
67 static void MD5_Init(struct md5_ctx *);
68 static void MD5_Update(struct md5_ctx *, unsigned char *, unsigned int);
69 static void MD5_Final(unsigned char [16], struct md5_ctx *);
71 /* Constants for MD5Transform routine.
91 static void MD5Transform(UINT4 [4], unsigned char [64]);
92 static void Encode(unsigned char *, UINT4 *, unsigned int);
93 static void Decode(UINT4 *, unsigned char *, unsigned int);
95 #define MD5_memcpy(dst,src,len) memcpy(dst,src,len)
96 #define MD5_memset(dst,val,len) memset(dst,val,len)
98 static unsigned char PADDING[64] = {
99 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
100 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
101 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
104 /* F, G, H and I are basic MD5 functions.
106 #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
107 #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
108 #define H(x, y, z) ((x) ^ (y) ^ (z))
109 #define I(x, y, z) ((y) ^ ((x) | (~z)))
111 /* ROTATE_LEFT rotates x left n bits.
113 #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
115 /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
116 Rotation is separate from addition to prevent recomputation.
118 #define FF(a, b, c, d, x, s, ac) { \
119 (a) += F ((b), (c), (d)) + (x) + (UINT4)(ac); \
120 (a) = ROTATE_LEFT ((a), (s)); \
123 #define GG(a, b, c, d, x, s, ac) { \
124 (a) += G ((b), (c), (d)) + (x) + (UINT4)(ac); \
125 (a) = ROTATE_LEFT ((a), (s)); \
128 #define HH(a, b, c, d, x, s, ac) { \
129 (a) += H ((b), (c), (d)) + (x) + (UINT4)(ac); \
130 (a) = ROTATE_LEFT ((a), (s)); \
133 #define II(a, b, c, d, x, s, ac) { \
134 (a) += I ((b), (c), (d)) + (x) + (UINT4)(ac); \
135 (a) = ROTATE_LEFT ((a), (s)); \
139 /* MD5 initialization. Begins an MD5 operation, writing a new context.
141 static void MD5_Init (context)
142 struct md5_ctx *context; /* context */
144 context->count[0] = context->count[1] = 0;
145 /* Load magic initialization constants.
147 context->state[0] = 0x67452301;
148 context->state[1] = 0xefcdab89;
149 context->state[2] = 0x98badcfe;
150 context->state[3] = 0x10325476;
153 /* MD5 block update operation. Continues an MD5 message-digest
154 operation, processing another message block, and updating the
157 static void MD5_Update (context, input, inputLen)
158 struct md5_ctx *context; /* context */
159 unsigned char *input; /* input block */
160 unsigned int inputLen; /* length of input block */
162 unsigned int i, index, partLen;
164 /* Compute number of bytes mod 64 */
165 index = (unsigned int)((context->count[0] >> 3) & 0x3F);
167 /* Update number of bits */
168 if ((context->count[0] += ((UINT4)inputLen << 3))
169 < ((UINT4)inputLen << 3))
171 context->count[1] += ((UINT4)inputLen >> 29);
173 partLen = 64 - index;
175 /* Transform as many times as possible. */
176 if (inputLen >= partLen) {
177 MD5_memcpy((void *)&context->buffer[index], (void *)input, partLen);
178 MD5Transform(context->state, context->buffer);
180 for (i = partLen; i + 63 < inputLen; i += 64)
181 MD5Transform(context->state, &input[i]);
188 /* Buffer remaining input */
189 MD5_memcpy((void *)&context->buffer[index], (void *)&input[i],
193 /* MD5 finalization. Ends an MD5 message-digest operation, writing the
194 the message digest and zeroizing the context.
196 static void MD5_Final (digest, context)
197 unsigned char digest[16]; /* message digest */
198 struct md5_ctx *context; /* context */
200 unsigned char bits[8];
201 unsigned int index, padLen;
203 /* Save number of bits */
204 Encode (bits, context->count, 8);
206 /* Pad out to 56 mod 64. */
207 index = (unsigned int)((context->count[0] >> 3) & 0x3f);
208 padLen = (index < 56) ? (56 - index) : (120 - index);
209 MD5_Update (context, PADDING, padLen);
211 /* Append length (before padding) */
212 MD5_Update (context, bits, 8);
214 /* Store state in digest */
215 Encode (digest, context->state, 16);
217 /* Zeroize sensitive information. */
218 MD5_memset ((void *)context, 0, sizeof (*context));
221 /* MD5 basic transformation. Transforms state based on block. */
222 static void MD5Transform (state, block)
224 unsigned char block[64];
226 UINT4 a = state[0], b = state[1], c = state[2], d = state[3], x[16];
228 Decode (x, block, 64);
231 FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
232 FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
233 FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
234 FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
235 FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
236 FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
237 FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
238 FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
239 FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
240 FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
241 FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
242 FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
243 FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
244 FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
245 FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
246 FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
249 GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
250 GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
251 GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
252 GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
253 GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
254 GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
255 GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
256 GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
257 GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
258 GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
259 GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
260 GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
261 GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
262 GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
263 GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
264 GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
267 HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
268 HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
269 HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
270 HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
271 HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
272 HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
273 HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
274 HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
275 HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
276 HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
277 HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
278 HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
279 HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
280 HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
281 HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
282 HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
285 II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
286 II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
287 II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
288 II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
289 II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
290 II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
291 II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
292 II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
293 II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
294 II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
295 II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
296 II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
297 II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
298 II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
299 II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
300 II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
307 /* Zeroize sensitive information. */
308 MD5_memset ((void *)x, 0, sizeof (x));
311 /* Encodes input (UINT4) into output (unsigned char). Assumes len is
314 static void Encode (unsigned char *output,
320 for (i = 0, j = 0; j < len; i++, j += 4) {
321 output[j] = (unsigned char)(input[i] & 0xff);
322 output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
323 output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
324 output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
328 /* Decodes input (unsigned char) into output (UINT4). Assumes len is
331 static void Decode (UINT4 *output,
332 unsigned char *input,
337 for (i = 0, j = 0; j < len; i++, j += 4)
338 output[i] = ((UINT4)input[j]) | (((UINT4)input[j+1]) << 8) |
339 (((UINT4)input[j+2]) << 16) | (((UINT4)input[j+3]) << 24);
343 /* If OpenSSL is present */
344 #include <openssl/md5.h>
349 void Curl_md5it(unsigned char *outbuffer, /* 16 bytes */
350 unsigned char *input)
354 MD5_Update(&ctx, input, strlen((char *)input));
355 MD5_Final(outbuffer, &ctx);