Annotation of embedaddon/php/ext/hash/hash_ripemd.c, revision 1.1.1.3
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
1.1.1.3 ! misho 5: | Copyright (c) 1997-2013 The PHP Group |
1.1 misho 6: +----------------------------------------------------------------------+
7: | This source file is subject to version 3.01 of the PHP license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.php.net/license/3_01.txt |
11: | If you did not receive a copy of the PHP license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@php.net so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Author: Sara Golemon <pollita@php.net> |
16: +----------------------------------------------------------------------+
17: */
18:
1.1.1.2 misho 19: /* $Id$ */
1.1 misho 20:
21: /* Heavily borrowed from md5.c & sha1.c of PHP archival fame
22: Note that ripemd laughs in the face of logic and uses
23: little endian byte ordering */
24:
25: #include "php_hash.h"
26: #include "php_hash_ripemd.h"
27:
28: const php_hash_ops php_hash_ripemd128_ops = {
29: (php_hash_init_func_t) PHP_RIPEMD128Init,
30: (php_hash_update_func_t) PHP_RIPEMD128Update,
31: (php_hash_final_func_t) PHP_RIPEMD128Final,
32: (php_hash_copy_func_t) php_hash_copy,
33: 16,
34: 64,
35: sizeof(PHP_RIPEMD128_CTX)
36: };
37:
38: const php_hash_ops php_hash_ripemd160_ops = {
39: (php_hash_init_func_t) PHP_RIPEMD160Init,
40: (php_hash_update_func_t) PHP_RIPEMD160Update,
41: (php_hash_final_func_t) PHP_RIPEMD160Final,
42: (php_hash_copy_func_t) php_hash_copy,
43: 20,
44: 64,
45: sizeof(PHP_RIPEMD160_CTX)
46: };
47:
48: const php_hash_ops php_hash_ripemd256_ops = {
49: (php_hash_init_func_t) PHP_RIPEMD256Init,
50: (php_hash_update_func_t) PHP_RIPEMD256Update,
51: (php_hash_final_func_t) PHP_RIPEMD256Final,
52: (php_hash_copy_func_t) php_hash_copy,
53: 32,
54: 64,
55: sizeof(PHP_RIPEMD256_CTX)
56: };
57:
58: const php_hash_ops php_hash_ripemd320_ops = {
59: (php_hash_init_func_t) PHP_RIPEMD320Init,
60: (php_hash_update_func_t) PHP_RIPEMD320Update,
61: (php_hash_final_func_t) PHP_RIPEMD320Final,
62: (php_hash_copy_func_t) php_hash_copy,
63: 40,
64: 64,
65: sizeof(PHP_RIPEMD320_CTX)
66: };
67:
68: /* {{{ PHP_RIPEMD128Init
69: * ripemd128 initialization. Begins a ripemd128 operation, writing a new context.
70: */
71: PHP_HASH_API void PHP_RIPEMD128Init(PHP_RIPEMD128_CTX * context)
72: {
73: context->count[0] = context->count[1] = 0;
74: /* Load magic initialization constants.
75: */
76: context->state[0] = 0x67452301;
77: context->state[1] = 0xEFCDAB89;
78: context->state[2] = 0x98BADCFE;
79: context->state[3] = 0x10325476;
80: }
81: /* }}} */
82:
83: /* {{{ PHP_RIPEMD256Init
84: * ripemd256 initialization. Begins a ripemd256 operation, writing a new context.
85: */
86: PHP_HASH_API void PHP_RIPEMD256Init(PHP_RIPEMD256_CTX * context)
87: {
88: context->count[0] = context->count[1] = 0;
89: /* Load magic initialization constants.
90: */
91: context->state[0] = 0x67452301;
92: context->state[1] = 0xEFCDAB89;
93: context->state[2] = 0x98BADCFE;
94: context->state[3] = 0x10325476;
95: context->state[4] = 0x76543210;
96: context->state[5] = 0xFEDCBA98;
97: context->state[6] = 0x89ABCDEF;
98: context->state[7] = 0x01234567;
99: }
100: /* }}} */
101:
102: /* {{{ PHP_RIPEMD160Init
103: * ripemd160 initialization. Begins a ripemd160 operation, writing a new context.
104: */
105: PHP_HASH_API void PHP_RIPEMD160Init(PHP_RIPEMD160_CTX * context)
106: {
107: context->count[0] = context->count[1] = 0;
108: /* Load magic initialization constants.
109: */
110: context->state[0] = 0x67452301;
111: context->state[1] = 0xEFCDAB89;
112: context->state[2] = 0x98BADCFE;
113: context->state[3] = 0x10325476;
114: context->state[4] = 0xC3D2E1F0;
115: }
116: /* }}} */
117:
118: /* {{{ PHP_RIPEMD320Init
119: * ripemd320 initialization. Begins a ripemd320 operation, writing a new context.
120: */
121: PHP_HASH_API void PHP_RIPEMD320Init(PHP_RIPEMD320_CTX * context)
122: {
123: context->count[0] = context->count[1] = 0;
124: /* Load magic initialization constants.
125: */
126: context->state[0] = 0x67452301;
127: context->state[1] = 0xEFCDAB89;
128: context->state[2] = 0x98BADCFE;
129: context->state[3] = 0x10325476;
130: context->state[4] = 0xC3D2E1F0;
131: context->state[5] = 0x76543210;
132: context->state[6] = 0xFEDCBA98;
133: context->state[7] = 0x89ABCDEF;
134: context->state[8] = 0x01234567;
135: context->state[9] = 0x3C2D1E0F;
136: }
137: /* }}} */
138:
139: /* Basic ripemd function */
140: #define F0(x,y,z) ((x) ^ (y) ^ (z))
141: #define F1(x,y,z) (((x) & (y)) | ((~(x)) & (z)))
142: #define F2(x,y,z) (((x) | (~(y))) ^ (z))
143: #define F3(x,y,z) (((x) & (z)) | ((y) & (~(z))))
144: #define F4(x,y,z) ((x) ^ ((y) | (~(z))))
145:
146: static const php_hash_uint32 K_values[5] = { 0x00000000, 0x5A827999, 0x6ED9EBA1, 0x8F1BBCDC, 0xA953FD4E }; /* 128, 256, 160, 320 */
147: static const php_hash_uint32 KK_values[4] = { 0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x00000000 }; /* 128 & 256 */
148: static const php_hash_uint32 KK160_values[5] = { 0x50A28BE6, 0x5C4DD124, 0x6D703EF3, 0x7A6D76E9, 0x00000000 }; /* 160 & 320 */
149:
150: #define K(n) K_values[ (n) >> 4]
151: #define KK(n) KK_values[(n) >> 4]
152: #define KK160(n) KK160_values[(n) >> 4]
153:
154: static const unsigned char R[80] = {
155: 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15,
156: 7, 4, 13, 1, 10, 6, 15, 3, 12, 0, 9, 5, 2, 14, 11, 8,
157: 3, 10, 14, 4, 9, 15, 8, 1, 2, 7, 0, 6, 13, 11, 5, 12,
158: 1, 9, 11, 10, 0, 8, 12, 4, 13, 3, 7, 15, 14, 5, 6, 2,
159: 4, 0, 5, 9, 7, 12, 2, 10, 14, 1, 3, 8, 11, 6, 15, 13 };
160:
161: static const unsigned char RR[80] = {
162: 5, 14, 7, 0, 9, 2, 11, 4, 13, 6, 15, 8, 1, 10, 3, 12,
163: 6, 11, 3, 7, 0, 13, 5, 10, 14, 15, 8, 12, 4, 9, 1, 2,
164: 15, 5, 1, 3, 7, 14, 6, 9, 11, 8, 12, 2, 10, 0, 4, 13,
165: 8, 6, 4, 1, 3, 11, 15, 0, 5, 12, 2, 13, 9, 7, 10, 14,
166: 12, 15, 10, 4, 1, 5, 8, 7, 6, 2, 13, 14, 0, 3, 9, 11 };
167:
168: static const unsigned char S[80] = {
169: 11, 14, 15, 12, 5, 8, 7, 9, 11, 13, 14, 15, 6, 7, 9, 8,
170: 7, 6, 8, 13, 11, 9, 7, 15, 7, 12, 15, 9, 11, 7, 13, 12,
171: 11, 13, 6, 7, 14, 9, 13, 15, 14, 8, 13, 6, 5, 12, 7, 5,
172: 11, 12, 14, 15, 14, 15, 9, 8, 9, 14, 5, 6, 8, 6, 5, 12,
173: 9, 15, 5, 11, 6, 8, 13, 12, 5, 12, 13, 14, 11, 8, 5, 6 };
174:
175: static const unsigned char SS[80] = {
176: 8, 9, 9, 11, 13, 15, 15, 5, 7, 7, 8, 11, 14, 14, 12, 6,
177: 9, 13, 15, 7, 12, 8, 9, 11, 7, 7, 12, 7, 6, 15, 13, 11,
178: 9, 7, 15, 11, 8, 6, 6, 14, 12, 13, 5, 14, 13, 13, 7, 5,
179: 15, 5, 8, 11, 14, 14, 6, 14, 6, 9, 12, 9, 12, 5, 15, 8,
180: 8, 5, 12, 9, 12, 5, 14, 6, 8, 13, 6, 5, 15, 13, 11, 11 };
181:
182: #define ROLS(j, x) (((x) << S[j]) | ((x) >> (32 - S[j])))
183: #define ROLSS(j, x) (((x) << SS[j]) | ((x) >> (32 - SS[j])))
184: #define ROL(n, x) (((x) << n) | ((x) >> (32 - n)))
185:
186: /* {{{ RIPEMDDecode
187: Decodes input (unsigned char) into output (php_hash_uint32). Assumes len is
188: a multiple of 4.
189: */
190: static void RIPEMDDecode(php_hash_uint32 *output, const unsigned char *input, unsigned int len)
191: {
192: unsigned int i, j;
193:
194: for (i = 0, j = 0; j < len; i++, j += 4)
195: output[i] = ((php_hash_uint32) input[j + 0]) | (((php_hash_uint32) input[j + 1]) << 8) |
196: (((php_hash_uint32) input[j + 2]) << 16) | (((php_hash_uint32) input[j + 3]) << 24);
197: }
198: /* }}} */
199:
200: /* {{{ RIPEMD128Transform
201: * ripemd128 basic transformation. Transforms state based on block.
202: */
203: static void RIPEMD128Transform(php_hash_uint32 state[4], const unsigned char block[64])
204: {
205: php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3];
206: php_hash_uint32 aa = state[0], bb = state[1], cc = state[2], dd = state[3];
207: php_hash_uint32 tmp, x[16];
208: int j;
209:
210: RIPEMDDecode(x, block, 64);
211:
212: for(j = 0; j < 16; j++) {
213: tmp = ROLS( j, a + F0(b, c, d) + x[R[j]] + K(j));
214: a = d; d = c; c = b; b = tmp;
215: tmp = ROLSS(j, aa + F3(bb, cc, dd) + x[RR[j]] + KK(j));
216: aa = dd; dd = cc; cc = bb; bb = tmp;
217: }
218:
219: for(j = 16; j < 32; j++) {
220: tmp = ROLS( j, a + F1(b, c, d) + x[R[j]] + K(j));
221: a = d; d = c; c = b; b = tmp;
222: tmp = ROLSS(j, aa + F2(bb, cc, dd) + x[RR[j]] + KK(j));
223: aa = dd; dd = cc; cc = bb; bb = tmp;
224: }
225:
226: for(j = 32; j < 48; j++) {
227: tmp = ROLS( j, a + F2(b, c, d) + x[R[j]] + K(j));
228: a = d; d = c; c = b; b = tmp;
229: tmp = ROLSS(j, aa + F1(bb, cc, dd) + x[RR[j]] + KK(j));
230: aa = dd; dd = cc; cc = bb; bb = tmp;
231: }
232:
233: for(j = 48; j < 64; j++) {
234: tmp = ROLS( j, a + F3(b, c, d) + x[R[j]] + K(j));
235: a = d; d = c; c = b; b = tmp;
236: tmp = ROLSS(j, aa + F0(bb, cc, dd) + x[RR[j]] + KK(j));
237: aa = dd; dd = cc; cc = bb; bb = tmp;
238: }
239:
240: tmp = state[1] + c + dd;
241: state[1] = state[2] + d + aa;
242: state[2] = state[3] + a + bb;
243: state[3] = state[0] + b + cc;
244: state[0] = tmp;
245:
246: tmp = 0;
247: memset(x, 0, sizeof(x));
248: }
249: /* }}} */
250:
251: /* {{{ PHP_RIPEMD128Update
252: ripemd128 block update operation. Continues a ripemd128 message-digest
253: operation, processing another message block, and updating the
254: context.
255: */
256: PHP_HASH_API void PHP_RIPEMD128Update(PHP_RIPEMD128_CTX * context, const unsigned char *input, unsigned int inputLen)
257: {
258: unsigned int i, index, partLen;
259:
260: /* Compute number of bytes mod 64 */
261: index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
262:
263: /* Update number of bits */
264: if ((context->count[0] += ((php_hash_uint32) inputLen << 3)) < ((php_hash_uint32) inputLen << 3)) {
265: context->count[1]++;
266: }
267: context->count[1] += ((php_hash_uint32) inputLen >> 29);
268:
269: partLen = 64 - index;
270:
271: /* Transform as many times as possible.
272: */
273: if (inputLen >= partLen) {
274: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
275: RIPEMD128Transform(context->state, context->buffer);
276:
277: for (i = partLen; i + 63 < inputLen; i += 64) {
278: RIPEMD128Transform(context->state, &input[i]);
279: }
280:
281: index = 0;
282: } else {
283: i = 0;
284: }
285:
286: /* Buffer remaining input */
287: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], inputLen - i);
288: }
289: /* }}} */
290:
291: /* {{{ RIPEMD256Transform
292: * ripemd256 basic transformation. Transforms state based on block.
293: */
294: static void RIPEMD256Transform(php_hash_uint32 state[8], const unsigned char block[64])
295: {
296: php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3];
297: php_hash_uint32 aa = state[4], bb = state[5], cc = state[6], dd = state[7];
298: php_hash_uint32 tmp, x[16];
299: int j;
300:
301: RIPEMDDecode(x, block, 64);
302:
303: for(j = 0; j < 16; j++) {
304: tmp = ROLS( j, a + F0(b, c, d) + x[R[j]] + K(j));
305: a = d; d = c; c = b; b = tmp;
306: tmp = ROLSS(j, aa + F3(bb, cc, dd) + x[RR[j]] + KK(j));
307: aa = dd; dd = cc; cc = bb; bb = tmp;
308: }
309: tmp = a; a = aa; aa = tmp;
310:
311: for(j = 16; j < 32; j++) {
312: tmp = ROLS( j, a + F1(b, c, d) + x[R[j]] + K(j));
313: a = d; d = c; c = b; b = tmp;
314: tmp = ROLSS(j, aa + F2(bb, cc, dd) + x[RR[j]] + KK(j));
315: aa = dd; dd = cc; cc = bb; bb = tmp;
316: }
317: tmp = b; b = bb; bb = tmp;
318:
319: for(j = 32; j < 48; j++) {
320: tmp = ROLS( j, a + F2(b, c, d) + x[R[j]] + K(j));
321: a = d; d = c; c = b; b = tmp;
322: tmp = ROLSS(j, aa + F1(bb, cc, dd) + x[RR[j]] + KK(j));
323: aa = dd; dd = cc; cc = bb; bb = tmp;
324: }
325: tmp = c; c = cc; cc = tmp;
326:
327: for(j = 48; j < 64; j++) {
328: tmp = ROLS( j, a + F3(b, c, d) + x[R[j]] + K(j));
329: a = d; d = c; c = b; b = tmp;
330: tmp = ROLSS(j, aa + F0(bb, cc, dd) + x[RR[j]] + KK(j));
331: aa = dd; dd = cc; cc = bb; bb = tmp;
332: }
333: tmp = d; d = dd; dd = tmp;
334:
335: state[0] += a;
336: state[1] += b;
337: state[2] += c;
338: state[3] += d;
339: state[4] += aa;
340: state[5] += bb;
341: state[6] += cc;
342: state[7] += dd;
343:
344: tmp = 0;
345: memset(x, 0, sizeof(x));
346: }
347: /* }}} */
348:
349: /* {{{ PHP_RIPEMD256Update
350: ripemd256 block update operation. Continues a ripemd256 message-digest
351: operation, processing another message block, and updating the
352: context.
353: */
354: PHP_HASH_API void PHP_RIPEMD256Update(PHP_RIPEMD256_CTX * context, const unsigned char *input, unsigned int inputLen)
355: {
356: unsigned int i, index, partLen;
357:
358: /* Compute number of bytes mod 64 */
359: index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
360:
361: /* Update number of bits */
362: if ((context->count[0] += ((php_hash_uint32) inputLen << 3)) < ((php_hash_uint32) inputLen << 3)) {
363: context->count[1]++;
364: }
365: context->count[1] += ((php_hash_uint32) inputLen >> 29);
366:
367: partLen = 64 - index;
368:
369: /* Transform as many times as possible.
370: */
371: if (inputLen >= partLen) {
372: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
373: RIPEMD256Transform(context->state, context->buffer);
374:
375: for (i = partLen; i + 63 < inputLen; i += 64) {
376: RIPEMD256Transform(context->state, &input[i]);
377: }
378:
379: index = 0;
380: } else {
381: i = 0;
382: }
383:
384: /* Buffer remaining input */
385: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], inputLen - i);
386: }
387: /* }}} */
388:
389: /* {{{ RIPEMD160Transform
390: * ripemd160 basic transformation. Transforms state based on block.
391: */
392: static void RIPEMD160Transform(php_hash_uint32 state[5], const unsigned char block[64])
393: {
394: php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3], e = state[4];
395: php_hash_uint32 aa = state[0], bb = state[1], cc = state[2], dd = state[3], ee = state[4];
396: php_hash_uint32 tmp, x[16];
397: int j;
398:
399: RIPEMDDecode(x, block, 64);
400:
401: for(j = 0; j < 16; j++) {
402: tmp = ROLS( j, a + F0(b, c, d) + x[R[j]] + K(j)) + e;
403: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
404: tmp = ROLSS(j, aa + F4(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
405: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
406: }
407:
408: for(j = 16; j < 32; j++) {
409: tmp = ROLS( j, a + F1(b, c, d) + x[R[j]] + K(j)) + e;
410: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
411: tmp = ROLSS(j, aa + F3(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
412: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
413: }
414:
415: for(j = 32; j < 48; j++) {
416: tmp = ROLS( j, a + F2(b, c, d) + x[R[j]] + K(j)) + e;
417: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
418: tmp = ROLSS(j, aa + F2(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
419: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
420: }
421:
422: for(j = 48; j < 64; j++) {
423: tmp = ROLS( j, a + F3(b, c, d) + x[R[j]] + K(j)) + e;
424: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
425: tmp = ROLSS(j, aa + F1(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
426: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
427: }
428:
429: for(j = 64; j < 80; j++) {
430: tmp = ROLS( j, a + F4(b, c, d) + x[R[j]] + K(j)) + e;
431: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
432: tmp = ROLSS(j, aa + F0(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
433: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
434: }
435:
436: tmp = state[1] + c + dd;
437: state[1] = state[2] + d + ee;
438: state[2] = state[3] + e + aa;
439: state[3] = state[4] + a + bb;
440: state[4] = state[0] + b + cc;
441: state[0] = tmp;
442:
443: tmp = 0;
444: memset(x, 0, sizeof(x));
445: }
446: /* }}} */
447:
448: /* {{{ PHP_RIPEMD160Update
449: ripemd160 block update operation. Continues a ripemd160 message-digest
450: operation, processing another message block, and updating the
451: context.
452: */
453: PHP_HASH_API void PHP_RIPEMD160Update(PHP_RIPEMD160_CTX * context, const unsigned char *input, unsigned int inputLen)
454: {
455: unsigned int i, index, partLen;
456:
457: /* Compute number of bytes mod 64 */
458: index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
459:
460: /* Update number of bits */
461: if ((context->count[0] += ((php_hash_uint32) inputLen << 3)) < ((php_hash_uint32) inputLen << 3)) {
462: context->count[1]++;
463: }
464: context->count[1] += ((php_hash_uint32) inputLen >> 29);
465:
466: partLen = 64 - index;
467:
468: /* Transform as many times as possible.
469: */
470: if (inputLen >= partLen) {
471: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
472: RIPEMD160Transform(context->state, context->buffer);
473:
474: for (i = partLen; i + 63 < inputLen; i += 64) {
475: RIPEMD160Transform(context->state, &input[i]);
476: }
477:
478: index = 0;
479: } else {
480: i = 0;
481: }
482:
483: /* Buffer remaining input */
484: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], inputLen - i);
485: }
486: /* }}} */
487:
488: /* {{{ RIPEMD320Transform
489: * ripemd320 basic transformation. Transforms state based on block.
490: */
491: static void RIPEMD320Transform(php_hash_uint32 state[10], const unsigned char block[64])
492: {
493: php_hash_uint32 a = state[0], b = state[1], c = state[2], d = state[3], e = state[4];
494: php_hash_uint32 aa = state[5], bb = state[6], cc = state[7], dd = state[8], ee = state[9];
495: php_hash_uint32 tmp, x[16];
496: int j;
497:
498: RIPEMDDecode(x, block, 64);
499:
500: for(j = 0; j < 16; j++) {
501: tmp = ROLS( j, a + F0(b, c, d) + x[R[j]] + K(j)) + e;
502: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
503: tmp = ROLSS(j, aa + F4(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
504: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
505: }
506: tmp = b; b = bb; bb = tmp;
507:
508: for(j = 16; j < 32; j++) {
509: tmp = ROLS( j, a + F1(b, c, d) + x[R[j]] + K(j)) + e;
510: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
511: tmp = ROLSS(j, aa + F3(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
512: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
513: }
514: tmp = d; d = dd; dd = tmp;
515:
516: for(j = 32; j < 48; j++) {
517: tmp = ROLS( j, a + F2(b, c, d) + x[R[j]] + K(j)) + e;
518: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
519: tmp = ROLSS(j, aa + F2(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
520: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
521: }
522: tmp = a; a = aa; aa = tmp;
523:
524: for(j = 48; j < 64; j++) {
525: tmp = ROLS( j, a + F3(b, c, d) + x[R[j]] + K(j)) + e;
526: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
527: tmp = ROLSS(j, aa + F1(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
528: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
529: }
530: tmp = c; c = cc; cc = tmp;
531:
532: for(j = 64; j < 80; j++) {
533: tmp = ROLS( j, a + F4(b, c, d) + x[R[j]] + K(j)) + e;
534: a = e; e = d; d = ROL(10, c); c = b; b = tmp;
535: tmp = ROLSS(j, aa + F0(bb, cc, dd) + x[RR[j]] + KK160(j)) + ee;
536: aa = ee; ee = dd; dd = ROL(10, cc); cc = bb; bb = tmp;
537: }
538: tmp = e; e = ee; ee = tmp;
539:
540: state[0] += a;
541: state[1] += b;
542: state[2] += c;
543: state[3] += d;
544: state[4] += e;
545: state[5] += aa;
546: state[6] += bb;
547: state[7] += cc;
548: state[8] += dd;
549: state[9] += ee;
550:
551: tmp = 0;
552: memset(x, 0, sizeof(x));
553: }
554: /* }}} */
555:
556: /* {{{ PHP_RIPEMD320Update
557: ripemd320 block update operation. Continues a ripemd320 message-digest
558: operation, processing another message block, and updating the
559: context.
560: */
561: PHP_HASH_API void PHP_RIPEMD320Update(PHP_RIPEMD320_CTX * context, const unsigned char *input, unsigned int inputLen)
562: {
563: unsigned int i, index, partLen;
564:
565: /* Compute number of bytes mod 64 */
566: index = (unsigned int) ((context->count[0] >> 3) & 0x3F);
567:
568: /* Update number of bits */
569: if ((context->count[0] += ((php_hash_uint32) inputLen << 3)) < ((php_hash_uint32) inputLen << 3)) {
570: context->count[1]++;
571: }
572: context->count[1] += ((php_hash_uint32) inputLen >> 29);
573:
574: partLen = 64 - index;
575:
576: /* Transform as many times as possible.
577: */
578: if (inputLen >= partLen) {
579: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) input, partLen);
580: RIPEMD320Transform(context->state, context->buffer);
581:
582: for (i = partLen; i + 63 < inputLen; i += 64) {
583: RIPEMD320Transform(context->state, &input[i]);
584: }
585:
586: index = 0;
587: } else {
588: i = 0;
589: }
590:
591: /* Buffer remaining input */
592: memcpy((unsigned char*) & context->buffer[index], (unsigned char*) & input[i], inputLen - i);
593: }
594: /* }}} */
595:
596: static const unsigned char PADDING[64] =
597: {
598: 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
599: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
600: 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
601: };
602:
603: /* {{{ RIPEMDEncode
604: Encodes input (php_hash_uint32) into output (unsigned char). Assumes len is
605: a multiple of 4.
606: */
607: static void RIPEMDEncode(unsigned char *output, php_hash_uint32 *input, unsigned int len)
608: {
609: unsigned int i, j;
610:
611: for (i = 0, j = 0; j < len; i++, j += 4) {
612: output[j + 3] = (unsigned char) ((input[i] >> 24) & 0xff);
613: output[j + 2] = (unsigned char) ((input[i] >> 16) & 0xff);
614: output[j + 1] = (unsigned char) ((input[i] >> 8) & 0xff);
615: output[j + 0] = (unsigned char) (input[i] & 0xff);
616: }
617: }
618: /* }}} */
619:
620: /* {{{ PHP_RIPEMD128Final
621: ripemd128 finalization. Ends a ripemd128 message-digest operation, writing the
622: the message digest and zeroizing the context.
623: */
624: PHP_HASH_API void PHP_RIPEMD128Final(unsigned char digest[16], PHP_RIPEMD128_CTX * context)
625: {
626: unsigned char bits[8];
627: unsigned int index, padLen;
628:
629: /* Save number of bits */
630: bits[0] = (unsigned char) (context->count[0] & 0xFF);
631: bits[1] = (unsigned char) ((context->count[0] >> 8) & 0xFF);
632: bits[2] = (unsigned char) ((context->count[0] >> 16) & 0xFF);
633: bits[3] = (unsigned char) ((context->count[0] >> 24) & 0xFF);
634: bits[4] = (unsigned char) (context->count[1] & 0xFF);
635: bits[5] = (unsigned char) ((context->count[1] >> 8) & 0xFF);
636: bits[6] = (unsigned char) ((context->count[1] >> 16) & 0xFF);
637: bits[7] = (unsigned char) ((context->count[1] >> 24) & 0xFF);
638:
639: /* Pad out to 56 mod 64.
640: */
641: index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
642: padLen = (index < 56) ? (56 - index) : (120 - index);
643: PHP_RIPEMD128Update(context, PADDING, padLen);
644:
645: /* Append length (before padding) */
646: PHP_RIPEMD128Update(context, bits, 8);
647:
648: /* Store state in digest */
649: RIPEMDEncode(digest, context->state, 16);
650:
651: /* Zeroize sensitive information.
652: */
653: memset((unsigned char*) context, 0, sizeof(*context));
654: }
655: /* }}} */
656:
657: /* {{{ PHP_RIPEMD256Final
658: ripemd256 finalization. Ends a ripemd256 message-digest operation, writing the
659: the message digest and zeroizing the context.
660: */
661: PHP_HASH_API void PHP_RIPEMD256Final(unsigned char digest[32], PHP_RIPEMD256_CTX * context)
662: {
663: unsigned char bits[8];
664: unsigned int index, padLen;
665:
666: /* Save number of bits */
667: bits[0] = (unsigned char) (context->count[0] & 0xFF);
668: bits[1] = (unsigned char) ((context->count[0] >> 8) & 0xFF);
669: bits[2] = (unsigned char) ((context->count[0] >> 16) & 0xFF);
670: bits[3] = (unsigned char) ((context->count[0] >> 24) & 0xFF);
671: bits[4] = (unsigned char) (context->count[1] & 0xFF);
672: bits[5] = (unsigned char) ((context->count[1] >> 8) & 0xFF);
673: bits[6] = (unsigned char) ((context->count[1] >> 16) & 0xFF);
674: bits[7] = (unsigned char) ((context->count[1] >> 24) & 0xFF);
675:
676: /* Pad out to 56 mod 64.
677: */
678: index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
679: padLen = (index < 56) ? (56 - index) : (120 - index);
680: PHP_RIPEMD256Update(context, PADDING, padLen);
681:
682: /* Append length (before padding) */
683: PHP_RIPEMD256Update(context, bits, 8);
684:
685: /* Store state in digest */
686: RIPEMDEncode(digest, context->state, 32);
687:
688: /* Zeroize sensitive information.
689: */
690: memset((unsigned char*) context, 0, sizeof(*context));
691: }
692: /* }}} */
693:
694: /* {{{ PHP_RIPEMD160Final
695: ripemd160 finalization. Ends a ripemd160 message-digest operation, writing the
696: the message digest and zeroizing the context.
697: */
698: PHP_HASH_API void PHP_RIPEMD160Final(unsigned char digest[20], PHP_RIPEMD160_CTX * context)
699: {
700: unsigned char bits[8];
701: unsigned int index, padLen;
702:
703: /* Save number of bits */
704: bits[0] = (unsigned char) (context->count[0] & 0xFF);
705: bits[1] = (unsigned char) ((context->count[0] >> 8) & 0xFF);
706: bits[2] = (unsigned char) ((context->count[0] >> 16) & 0xFF);
707: bits[3] = (unsigned char) ((context->count[0] >> 24) & 0xFF);
708: bits[4] = (unsigned char) (context->count[1] & 0xFF);
709: bits[5] = (unsigned char) ((context->count[1] >> 8) & 0xFF);
710: bits[6] = (unsigned char) ((context->count[1] >> 16) & 0xFF);
711: bits[7] = (unsigned char) ((context->count[1] >> 24) & 0xFF);
712:
713: /* Pad out to 56 mod 64.
714: */
715: index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
716: padLen = (index < 56) ? (56 - index) : (120 - index);
717: PHP_RIPEMD160Update(context, PADDING, padLen);
718:
719: /* Append length (before padding) */
720: PHP_RIPEMD160Update(context, bits, 8);
721:
722: /* Store state in digest */
723: RIPEMDEncode(digest, context->state, 20);
724:
725: /* Zeroize sensitive information.
726: */
727: memset((unsigned char*) context, 0, sizeof(*context));
728: }
729: /* }}} */
730:
731: /* {{{ PHP_RIPEMD320Final
732: ripemd320 finalization. Ends a ripemd320 message-digest operation, writing the
733: the message digest and zeroizing the context.
734: */
735: PHP_HASH_API void PHP_RIPEMD320Final(unsigned char digest[40], PHP_RIPEMD320_CTX * context)
736: {
737: unsigned char bits[8];
738: unsigned int index, padLen;
739:
740: /* Save number of bits */
741: bits[0] = (unsigned char) (context->count[0] & 0xFF);
742: bits[1] = (unsigned char) ((context->count[0] >> 8) & 0xFF);
743: bits[2] = (unsigned char) ((context->count[0] >> 16) & 0xFF);
744: bits[3] = (unsigned char) ((context->count[0] >> 24) & 0xFF);
745: bits[4] = (unsigned char) (context->count[1] & 0xFF);
746: bits[5] = (unsigned char) ((context->count[1] >> 8) & 0xFF);
747: bits[6] = (unsigned char) ((context->count[1] >> 16) & 0xFF);
748: bits[7] = (unsigned char) ((context->count[1] >> 24) & 0xFF);
749:
750: /* Pad out to 56 mod 64.
751: */
752: index = (unsigned int) ((context->count[0] >> 3) & 0x3f);
753: padLen = (index < 56) ? (56 - index) : (120 - index);
754: PHP_RIPEMD320Update(context, PADDING, padLen);
755:
756: /* Append length (before padding) */
757: PHP_RIPEMD320Update(context, bits, 8);
758:
759: /* Store state in digest */
760: RIPEMDEncode(digest, context->state, 40);
761:
762: /* Zeroize sensitive information.
763: */
764: memset((unsigned char*) context, 0, sizeof(*context));
765: }
766: /* }}} */
767:
768: /*
769: * Local variables:
770: * tab-width: 4
771: * c-basic-offset: 4
772: * End:
773: * vim600: sw=4 ts=4 fdm=marker
774: * vim<600: sw=4 ts=4
775: */
FreeBSD-CVSweb <freebsd-cvsweb@FreeBSD.org>
![[BACK]](/icons/cvsweb/back.gif){kind=icon}
Return to hash_ripemd.c CVS log ![[TXT]](/icons/cvsweb/text.gif){kind=icon}
![[DIR]](/icons/cvsweb/dir.gif){kind=icon}
Up to [ELWIX - Embedded LightWeight unIX -] / embedaddon / php / ext / hash