1 #include "Core.h"
2
3 namespace Upp {
4
5 #define MD5_CTX UPP_MD5_CTX
6
7 /* MD5C.C - RSA Data Security, Inc., MD5 message-digest algorithm
8 */
9
10 /* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
11 rights reserved.
12
13 License to copy and use this software is granted provided that it
14 is identified as the "RSA Data Security, Inc. MD5 Message-Digest
15 Algorithm" in all material mentioning or referencing this software
16 or this function.
17
18 License is also granted to make and use derivative works provided
19 that such works are identified as "derived from the RSA Data
20 Security, Inc. MD5 Message-Digest Algorithm" in all material
21 mentioning or referencing the derived work.
22
23 RSA Data Security, Inc. makes no representations concerning either
24 the merchantability of this software or the suitability of this
25 software for any particular purpose. It is provided "as is"
26 without express or implied warranty of any kind.
27
28 These notices must be retained in any copies of any part of this
29 documentation and/or software.
30 */
31
32 /* Constants for MD5Transform routine.
33 */
34
35 #define S11 7
36 #define S12 12
37 #define S13 17
38 #define S14 22
39 #define S21 5
40 #define S22 9
41 #define S23 14
42 #define S24 20
43 #define S31 4
44 #define S32 11
45 #define S33 16
46 #define S34 23
47 #define S41 6
48 #define S42 10
49 #define S43 15
50 #define S44 21
51
52 static void MD5Transform (dword [4], const unsigned char [64]);
53 static void Encode (unsigned char *, const dword *, unsigned int);
54 static void Decode (dword *, const unsigned char *, unsigned int);
55 static void MD5_memcpy (void *, const void *, unsigned int);
56 static void MD5_memset (void *, int, unsigned int);
57
58 static unsigned char PADDING[64] = {
59 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
60 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
61 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
62 };
63
64 /* F, G, H and I are basic MD5 functions.
65 */
66 #define F(x, y, z) (((x) & (y)) | ((~x) & (z)))
67 #define G(x, y, z) (((x) & (z)) | ((y) & (~z)))
68 #define H(x, y, z) ((x) ^ (y) ^ (z))
69 #define I(x, y, z) ((y) ^ ((x) | (~z)))
70
71 /* ROTATE_LEFT rotates x left n bits.
72 */
73 #define ROTATE_LEFT(x, n) (((x) << (n)) | ((x) >> (32-(n))))
74
75 /* FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
76 Rotation is separate from addition to prevent recomputation.
77 */
78 #define FF(a, b, c, d, x, s, ac) { \
79 (a) += F ((b), (c), (d)) + (x) + (dword)(ac); \
80 (a) = ROTATE_LEFT ((a), (s)); \
81 (a) += (b); \
82 }
83 #define GG(a, b, c, d, x, s, ac) { \
84 (a) += G ((b), (c), (d)) + (x) + (dword)(ac); \
85 (a) = ROTATE_LEFT ((a), (s)); \
86 (a) += (b); \
87 }
88 #define HH(a, b, c, d, x, s, ac) { \
89 (a) += H ((b), (c), (d)) + (x) + (dword)(ac); \
90 (a) = ROTATE_LEFT ((a), (s)); \
91 (a) += (b); \
92 }
93 #define II(a, b, c, d, x, s, ac) { \
94 (a) += I ((b), (c), (d)) + (x) + (dword)(ac); \
95 (a) = ROTATE_LEFT ((a), (s)); \
96 (a) += (b); \
97 }
98
99 /* MD5 initialization. Begins an MD5 operation, writing a new context.
100 */
MD5Init(MD5_CTX * context)101 void MD5Init (MD5_CTX *context)
102 {
103 context->count[0] = context->count[1] = 0;
104 /* Load magic initialization constants.
105 */
106 context->state[0] = 0x67452301;
107 context->state[1] = 0xefcdab89;
108 context->state[2] = 0x98badcfe;
109 context->state[3] = 0x10325476;
110 }
111
112 /* MD5 block update operation. Continues an MD5 message-digest
113 operation, processing another message block, and updating the
114 context.
115 */
MD5Update(MD5_CTX * context,const unsigned char * input,dword inputLen)116 void MD5Update (MD5_CTX *context, const unsigned char *input, dword inputLen)
117 //MD5_CTX *context; /* context */
118 //unsigned char *input; /* input block */
119 //unsigned int inputLen; /* length of input block */
120 {
121 unsigned int i, index, partLen;
122
123 /* Compute number of bytes mod 64 */
124 index = (unsigned int)((context->count[0] >> 3) & 0x3F);
125
126 /* Update number of bits */
127 if ((context->count[0] += ((dword)inputLen << 3)) < ((dword)inputLen << 3))
128 context->count[1]++;
129 context->count[1] += ((dword)inputLen >> 29);
130
131 partLen = 64 - index;
132
133 /* Transform as many times as possible.
134 */
135 if (inputLen >= partLen) {
136 MD5_memcpy
137 ((void *)&context->buffer[index], (void *)input, partLen);
138 MD5Transform (context->state, context->buffer);
139
140 for (i = partLen; i + 63 < inputLen; i += 64)
141 MD5Transform (context->state, &input[i]);
142
143 index = 0;
144 }
145 else
146 i = 0;
147
148 /* Buffer remaining input */
149 MD5_memcpy((void *)&context->buffer[index], (void *)&input[i],
150 inputLen-i);
151 }
152
153 /* MD5 finalization. Ends an MD5 message-digest operation, writing the
154 the message digest and zeroizing the context.
155 */
MD5Final(unsigned char * digest,MD5_CTX * context)156 void MD5Final (unsigned char *digest, MD5_CTX *context)
157 {
158 unsigned char bits[8];
159 unsigned int index, padLen;
160
161 /* Save number of bits */
162 Encode (bits, context->count, 8);
163
164 /* Pad out to 56 mod 64.
165 */
166 index = (unsigned int)((context->count[0] >> 3) & 0x3f);
167 padLen = (index < 56) ? (56 - index) : (120 - index);
168 MD5Update (context, PADDING, padLen);
169
170 /* Append length (before padding) */
171 MD5Update (context, bits, 8);
172
173 /* Store state in digest */
174 Encode (digest, context->state, 16);
175
176 /* Zeroize sensitive information.
177 */
178 MD5_memset ((void *)context, 0, sizeof (*context));
179 }
180
181 /* MD5 basic transformation. Transforms state based on block.
182 */
MD5Transform(dword state[4],const unsigned char block[64])183 static void MD5Transform (dword state[4], const unsigned char block[64])
184 {
185 dword a = state[0], b = state[1], c = state[2], d = state[3], x[16];
186
187 Decode (x, block, 64);
188
189 /* Round 1 */
190 FF (a, b, c, d, x[ 0], S11, 0xd76aa478); /* 1 */
191 FF (d, a, b, c, x[ 1], S12, 0xe8c7b756); /* 2 */
192 FF (c, d, a, b, x[ 2], S13, 0x242070db); /* 3 */
193 FF (b, c, d, a, x[ 3], S14, 0xc1bdceee); /* 4 */
194 FF (a, b, c, d, x[ 4], S11, 0xf57c0faf); /* 5 */
195 FF (d, a, b, c, x[ 5], S12, 0x4787c62a); /* 6 */
196 FF (c, d, a, b, x[ 6], S13, 0xa8304613); /* 7 */
197 FF (b, c, d, a, x[ 7], S14, 0xfd469501); /* 8 */
198 FF (a, b, c, d, x[ 8], S11, 0x698098d8); /* 9 */
199 FF (d, a, b, c, x[ 9], S12, 0x8b44f7af); /* 10 */
200 FF (c, d, a, b, x[10], S13, 0xffff5bb1); /* 11 */
201 FF (b, c, d, a, x[11], S14, 0x895cd7be); /* 12 */
202 FF (a, b, c, d, x[12], S11, 0x6b901122); /* 13 */
203 FF (d, a, b, c, x[13], S12, 0xfd987193); /* 14 */
204 FF (c, d, a, b, x[14], S13, 0xa679438e); /* 15 */
205 FF (b, c, d, a, x[15], S14, 0x49b40821); /* 16 */
206
207 /* Round 2 */
208 GG (a, b, c, d, x[ 1], S21, 0xf61e2562); /* 17 */
209 GG (d, a, b, c, x[ 6], S22, 0xc040b340); /* 18 */
210 GG (c, d, a, b, x[11], S23, 0x265e5a51); /* 19 */
211 GG (b, c, d, a, x[ 0], S24, 0xe9b6c7aa); /* 20 */
212 GG (a, b, c, d, x[ 5], S21, 0xd62f105d); /* 21 */
213 GG (d, a, b, c, x[10], S22, 0x2441453); /* 22 */
214 GG (c, d, a, b, x[15], S23, 0xd8a1e681); /* 23 */
215 GG (b, c, d, a, x[ 4], S24, 0xe7d3fbc8); /* 24 */
216 GG (a, b, c, d, x[ 9], S21, 0x21e1cde6); /* 25 */
217 GG (d, a, b, c, x[14], S22, 0xc33707d6); /* 26 */
218 GG (c, d, a, b, x[ 3], S23, 0xf4d50d87); /* 27 */
219
220 GG (b, c, d, a, x[ 8], S24, 0x455a14ed); /* 28 */
221 GG (a, b, c, d, x[13], S21, 0xa9e3e905); /* 29 */
222 GG (d, a, b, c, x[ 2], S22, 0xfcefa3f8); /* 30 */
223 GG (c, d, a, b, x[ 7], S23, 0x676f02d9); /* 31 */
224 GG (b, c, d, a, x[12], S24, 0x8d2a4c8a); /* 32 */
225
226 /* Round 3 */
227 HH (a, b, c, d, x[ 5], S31, 0xfffa3942); /* 33 */
228 HH (d, a, b, c, x[ 8], S32, 0x8771f681); /* 34 */
229 HH (c, d, a, b, x[11], S33, 0x6d9d6122); /* 35 */
230 HH (b, c, d, a, x[14], S34, 0xfde5380c); /* 36 */
231 HH (a, b, c, d, x[ 1], S31, 0xa4beea44); /* 37 */
232 HH (d, a, b, c, x[ 4], S32, 0x4bdecfa9); /* 38 */
233 HH (c, d, a, b, x[ 7], S33, 0xf6bb4b60); /* 39 */
234 HH (b, c, d, a, x[10], S34, 0xbebfbc70); /* 40 */
235 HH (a, b, c, d, x[13], S31, 0x289b7ec6); /* 41 */
236 HH (d, a, b, c, x[ 0], S32, 0xeaa127fa); /* 42 */
237 HH (c, d, a, b, x[ 3], S33, 0xd4ef3085); /* 43 */
238 HH (b, c, d, a, x[ 6], S34, 0x4881d05); /* 44 */
239 HH (a, b, c, d, x[ 9], S31, 0xd9d4d039); /* 45 */
240 HH (d, a, b, c, x[12], S32, 0xe6db99e5); /* 46 */
241 HH (c, d, a, b, x[15], S33, 0x1fa27cf8); /* 47 */
242 HH (b, c, d, a, x[ 2], S34, 0xc4ac5665); /* 48 */
243
244 /* Round 4 */
245 II (a, b, c, d, x[ 0], S41, 0xf4292244); /* 49 */
246 II (d, a, b, c, x[ 7], S42, 0x432aff97); /* 50 */
247 II (c, d, a, b, x[14], S43, 0xab9423a7); /* 51 */
248 II (b, c, d, a, x[ 5], S44, 0xfc93a039); /* 52 */
249 II (a, b, c, d, x[12], S41, 0x655b59c3); /* 53 */
250 II (d, a, b, c, x[ 3], S42, 0x8f0ccc92); /* 54 */
251 II (c, d, a, b, x[10], S43, 0xffeff47d); /* 55 */
252 II (b, c, d, a, x[ 1], S44, 0x85845dd1); /* 56 */
253 II (a, b, c, d, x[ 8], S41, 0x6fa87e4f); /* 57 */
254 II (d, a, b, c, x[15], S42, 0xfe2ce6e0); /* 58 */
255 II (c, d, a, b, x[ 6], S43, 0xa3014314); /* 59 */
256 II (b, c, d, a, x[13], S44, 0x4e0811a1); /* 60 */
257 II (a, b, c, d, x[ 4], S41, 0xf7537e82); /* 61 */
258 II (d, a, b, c, x[11], S42, 0xbd3af235); /* 62 */
259 II (c, d, a, b, x[ 2], S43, 0x2ad7d2bb); /* 63 */
260 II (b, c, d, a, x[ 9], S44, 0xeb86d391); /* 64 */
261
262 state[0] += a;
263 state[1] += b;
264 state[2] += c;
265 state[3] += d;
266
267 /* Zeroize sensitive information.
268
269 */
270 MD5_memset ((void *)x, 0, sizeof (x));
271 }
272
273 /* Encodes input (dword) into output (unsigned char). Assumes len is
274 a multiple of 4.
275 */
Encode(unsigned char * output,const dword * input,unsigned int len)276 static void Encode (unsigned char *output, const dword *input, unsigned int len)
277 {
278 unsigned int i, j;
279
280 for (i = 0, j = 0; j < len; i++, j += 4) {
281 output[j] = (unsigned char)(input[i] & 0xff);
282 output[j+1] = (unsigned char)((input[i] >> 8) & 0xff);
283 output[j+2] = (unsigned char)((input[i] >> 16) & 0xff);
284 output[j+3] = (unsigned char)((input[i] >> 24) & 0xff);
285 }
286 }
287
288 /* Decodes input (unsigned char) into output (dword). Assumes len is
289 a multiple of 4.
290 */
Decode(dword * output,const unsigned char * input,unsigned int len)291 static void Decode (dword *output, const unsigned char *input, unsigned int len)
292 {
293 unsigned int i, j;
294
295 for (i = 0, j = 0; j < len; i++, j += 4)
296 output[i] = ((dword)input[j]) | (((dword)input[j+1]) << 8) |
297 (((dword)input[j+2]) << 16) | (((dword)input[j+3]) << 24);
298 }
299
300 /* Note: Replace "for loop" with standard memcpy if possible.
301 */
302
MD5_memcpy(void * output,const void * input,unsigned int len)303 static void MD5_memcpy (void * output, const void * input, unsigned int len)
304 {
305 memcpy(output, input, len);
306 }
307
308 /* Note: Replace "for loop" with standard memset if possible.
309 */
MD5_memset(void * output,int value,unsigned int len)310 static void MD5_memset (void * output, int value, unsigned int len)
311 {
312 memset(output, value, len);
313 }
314
315 // ------------------ U++ code starts here: ----------------------
316
Out(const void * data,dword size)317 void Md5Stream::Out(const void *data, dword size)
318 {
319 MD5Update (&context, (const unsigned char *)data, size);
320 }
321
Finish(byte * hash16)322 void Md5Stream::Finish(byte *hash16)
323 {
324 Flush();
325 MD5Final(hash16, &context);
326 }
327
FinishString()328 String Md5Stream::FinishString()
329 {
330 byte hash[16];
331 Finish(hash);
332 return HexString(hash, 16);
333 }
334
FinishStringS()335 String Md5Stream::FinishStringS()
336 {
337 byte hash[16];
338 Finish(hash);
339 return HexString(hash, 16, 4);
340 }
341
Reset()342 void Md5Stream::Reset()
343 {
344 MD5Init (&context);
345 }
346
Md5Stream()347 Md5Stream::Md5Stream()
348 {
349 Reset();
350 }
351
~Md5Stream()352 Md5Stream::~Md5Stream()
353 {
354 memset(&context, 0, sizeof(context));
355 }
356
MD5(byte * hash16,const void * data,dword size)357 void MD5(byte *hash16, const void *data, dword size)
358 {
359 Md5Stream md5;
360 md5.Put(data, size);
361 md5.Finish(hash16);
362 }
363
MD5String(const void * data,dword size)364 String MD5String(const void *data, dword size)
365 {
366 Md5Stream md5;
367 md5.Put(data, size);
368 return md5.FinishString();
369 }
370
MD5(byte * hash16,const String & data)371 void MD5(byte *hash16, const String& data)
372 {
373 return MD5(hash16, ~data, data.GetCount());
374 }
375
MD5String(const String & data)376 String MD5String(const String& data)
377 {
378 return MD5String(~data, data.GetCount());
379 }
380
MD5StringS(const void * data,dword size)381 String MD5StringS(const void *data, dword size)
382 {
383 Md5Stream md5;
384 md5.Put(data, size);
385 return md5.FinishStringS();
386 }
387
MD5StringS(const String & data)388 String MD5StringS(const String& data)
389 {
390 return MD5StringS(~data, data.GetCount());
391 }
392
393 }
394