Annotation of embedaddon/php/ext/hash/hash_gost.c, revision 1.1.1.2
1.1 misho 1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2012 The PHP Group |
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: | Authors: Michael Wallner <mike@php.net> |
16: | Sara Golemon <pollita@php.net> |
17: +----------------------------------------------------------------------+
18: */
19:
1.1.1.2 ! misho 20: /* $Id$ */
1.1 misho 21:
22: #include "php_hash.h"
23: #include "php_hash_gost.h"
24: #include "php_hash_gost_tables.h"
25:
26: /* {{{ Gost()
27: * derived from gost_compress() by Markku-Juhani Saarinen <mjos@ssh.fi>
28: */
29:
30: #define round(k1, k2) \
31: t = (k1) + r; \
32: l ^= tables[0][t & 0xff] ^ tables[1][(t >> 8) & 0xff] ^ \
33: tables[2][(t >> 16) & 0xff] ^ tables[3][t >> 24]; \
34: t = (k2) + l; \
35: r ^= tables[0][t & 0xff] ^ tables[1][(t >> 8) & 0xff] ^ \
36: tables[2][(t >> 16) & 0xff] ^ tables[3][t >> 24];
37:
38: #define R(key, h, i, t, l, r) \
39: r = h[i]; \
40: l = h[i + 1]; \
41: round(key[0], key[1]) \
42: round(key[2], key[3]) \
43: round(key[4], key[5]) \
44: round(key[6], key[7]) \
45: round(key[0], key[1]) \
46: round(key[2], key[3]) \
47: round(key[4], key[5]) \
48: round(key[6], key[7]) \
49: round(key[0], key[1]) \
50: round(key[2], key[3]) \
51: round(key[4], key[5]) \
52: round(key[6], key[7]) \
53: round(key[7], key[6]) \
54: round(key[5], key[4]) \
55: round(key[3], key[2]) \
56: round(key[1], key[0]) \
57: t = r; \
58: r = l; \
59: l = t; \
60:
61: #define X(w, u, v) \
62: w[0] = u[0] ^ v[0]; \
63: w[1] = u[1] ^ v[1]; \
64: w[2] = u[2] ^ v[2]; \
65: w[3] = u[3] ^ v[3]; \
66: w[4] = u[4] ^ v[4]; \
67: w[5] = u[5] ^ v[5]; \
68: w[6] = u[6] ^ v[6]; \
69: w[7] = u[7] ^ v[7];
70:
71: #define P(key, w) \
72: key[0] = (w[0] & 0x000000ff) | ((w[2] & 0x000000ff) << 8) | \
73: ((w[4] & 0x000000ff) << 16) | ((w[6] & 0x000000ff) << 24); \
74: key[1] = ((w[0] & 0x0000ff00) >> 8) | (w[2] & 0x0000ff00) | \
75: ((w[4] & 0x0000ff00) << 8) | ((w[6] & 0x0000ff00) << 16); \
76: key[2] = ((w[0] & 0x00ff0000) >> 16) | ((w[2] & 0x00ff0000) >> 8) | \
77: (w[4] & 0x00ff0000) | ((w[6] & 0x00ff0000) << 8); \
78: key[3] = ((w[0] & 0xff000000) >> 24) | ((w[2] & 0xff000000) >> 16) | \
79: ((w[4] & 0xff000000) >> 8) | (w[6] & 0xff000000); \
80: key[4] = (w[1] & 0x000000ff) | ((w[3] & 0x000000ff) << 8) | \
81: ((w[5] & 0x000000ff) << 16) | ((w[7] & 0x000000ff) << 24); \
82: key[5] = ((w[1] & 0x0000ff00) >> 8) | (w[3] & 0x0000ff00) | \
83: ((w[5] & 0x0000ff00) << 8) | ((w[7] & 0x0000ff00) << 16); \
84: key[6] = ((w[1] & 0x00ff0000) >> 16) | ((w[3] & 0x00ff0000) >> 8) | \
85: (w[5] & 0x00ff0000) | ((w[7] & 0x00ff0000) << 8); \
86: key[7] = ((w[1] & 0xff000000) >> 24) | ((w[3] & 0xff000000) >> 16) | \
87: ((w[5] & 0xff000000) >> 8) | (w[7] & 0xff000000);
88:
89: #define A(x, l, r) \
90: l = x[0] ^ x[2]; \
91: r = x[1] ^ x[3]; \
92: x[0] = x[2]; \
93: x[1] = x[3]; \
94: x[2] = x[4]; \
95: x[3] = x[5]; \
96: x[4] = x[6]; \
97: x[5] = x[7]; \
98: x[6] = l; \
99: x[7] = r;
100:
101: #define AA(x, l, r) \
102: l = x[0]; \
103: r = x[2]; \
104: x[0] = x[4]; \
105: x[2] = x[6]; \
106: x[4] = l ^ r; \
107: x[6] = x[0] ^ r; \
108: l = x[1]; \
109: r = x[3]; \
110: x[1] = x[5]; \
111: x[3] = x[7]; \
112: x[5] = l ^ r; \
113: x[7] = x[1] ^ r;
114:
115: #define C(x) \
116: x[0] ^= 0xff00ff00; \
117: x[1] ^= 0xff00ff00; \
118: x[2] ^= 0x00ff00ff; \
119: x[3] ^= 0x00ff00ff; \
120: x[4] ^= 0x00ffff00; \
121: x[5] ^= 0xff0000ff; \
122: x[6] ^= 0x000000ff; \
123: x[7] ^= 0xff00ffff;
124:
125: #define S(s, l, r) \
126: s[i] = r; \
127: s[i + 1] = l;
128:
129: #define SHIFT12(u, m, s) \
130: u[0] = m[0] ^ s[6]; \
131: u[1] = m[1] ^ s[7]; \
132: u[2] = m[2] ^ (s[0] << 16) ^ (s[0] >> 16) ^ (s[0] & 0xffff) ^ \
133: (s[1] & 0xffff) ^ (s[1] >> 16) ^ (s[2] << 16) ^ s[6] ^ (s[6] << 16) ^ \
134: (s[7] & 0xffff0000) ^ (s[7] >> 16); \
135: u[3] = m[3] ^ (s[0] & 0xffff) ^ (s[0] << 16) ^ (s[1] & 0xffff) ^ \
136: (s[1] << 16) ^ (s[1] >> 16) ^ (s[2] << 16) ^ (s[2] >> 16) ^ \
137: (s[3] << 16) ^ s[6] ^ (s[6] << 16) ^ (s[6] >> 16) ^ (s[7] & 0xffff) ^ \
138: (s[7] << 16) ^ (s[7] >> 16); \
139: u[4] = m[4] ^ \
140: (s[0] & 0xffff0000) ^ (s[0] << 16) ^ (s[0] >> 16) ^ \
141: (s[1] & 0xffff0000) ^ (s[1] >> 16) ^ (s[2] << 16) ^ (s[2] >> 16) ^ \
142: (s[3] << 16) ^ (s[3] >> 16) ^ (s[4] << 16) ^ (s[6] << 16) ^ \
143: (s[6] >> 16) ^(s[7] & 0xffff) ^ (s[7] << 16) ^ (s[7] >> 16); \
144: u[5] = m[5] ^ (s[0] << 16) ^ (s[0] >> 16) ^ (s[0] & 0xffff0000) ^ \
145: (s[1] & 0xffff) ^ s[2] ^ (s[2] >> 16) ^ (s[3] << 16) ^ (s[3] >> 16) ^ \
146: (s[4] << 16) ^ (s[4] >> 16) ^ (s[5] << 16) ^ (s[6] << 16) ^ \
147: (s[6] >> 16) ^ (s[7] & 0xffff0000) ^ (s[7] << 16) ^ (s[7] >> 16); \
148: u[6] = m[6] ^ s[0] ^ (s[1] >> 16) ^ (s[2] << 16) ^ s[3] ^ (s[3] >> 16) ^ \
149: (s[4] << 16) ^ (s[4] >> 16) ^ (s[5] << 16) ^ (s[5] >> 16) ^ s[6] ^ \
150: (s[6] << 16) ^ (s[6] >> 16) ^ (s[7] << 16); \
151: u[7] = m[7] ^ (s[0] & 0xffff0000) ^ (s[0] << 16) ^ (s[1] & 0xffff) ^ \
152: (s[1] << 16) ^ (s[2] >> 16) ^ (s[3] << 16) ^ s[4] ^ (s[4] >> 16) ^ \
153: (s[5] << 16) ^ (s[5] >> 16) ^ (s[6] >> 16) ^ (s[7] & 0xffff) ^ \
154: (s[7] << 16) ^ (s[7] >> 16);
155:
156: #define SHIFT16(h, v, u) \
157: v[0] = h[0] ^ (u[1] << 16) ^ (u[0] >> 16); \
158: v[1] = h[1] ^ (u[2] << 16) ^ (u[1] >> 16); \
159: v[2] = h[2] ^ (u[3] << 16) ^ (u[2] >> 16); \
160: v[3] = h[3] ^ (u[4] << 16) ^ (u[3] >> 16); \
161: v[4] = h[4] ^ (u[5] << 16) ^ (u[4] >> 16); \
162: v[5] = h[5] ^ (u[6] << 16) ^ (u[5] >> 16); \
163: v[6] = h[6] ^ (u[7] << 16) ^ (u[6] >> 16); \
164: v[7] = h[7] ^ (u[0] & 0xffff0000) ^ (u[0] << 16) ^ (u[7] >> 16) ^ \
165: (u[1] & 0xffff0000) ^ (u[1] << 16) ^ (u[6] << 16) ^ (u[7] & 0xffff0000);
166:
167: #define SHIFT61(h, v) \
168: h[0] = (v[0] & 0xffff0000) ^ (v[0] << 16) ^ (v[0] >> 16) ^ (v[1] >> 16) ^ \
169: (v[1] & 0xffff0000) ^ (v[2] << 16) ^ (v[3] >> 16) ^ (v[4] << 16) ^ \
170: (v[5] >> 16) ^ v[5] ^ (v[6] >> 16) ^ (v[7] << 16) ^ (v[7] >> 16) ^ \
171: (v[7] & 0xffff); \
172: h[1] = (v[0] << 16) ^ (v[0] >> 16) ^ (v[0] & 0xffff0000) ^ (v[1] & 0xffff) ^ \
173: v[2] ^ (v[2] >> 16) ^ (v[3] << 16) ^ (v[4] >> 16) ^ (v[5] << 16) ^ \
174: (v[6] << 16) ^ v[6] ^ (v[7] & 0xffff0000) ^ (v[7] >> 16); \
175: h[2] = (v[0] & 0xffff) ^ (v[0] << 16) ^ (v[1] << 16) ^ (v[1] >> 16) ^ \
176: (v[1] & 0xffff0000) ^ (v[2] << 16) ^ (v[3] >> 16) ^ v[3] ^ (v[4] << 16) ^ \
177: (v[5] >> 16) ^ v[6] ^ (v[6] >> 16) ^ (v[7] & 0xffff) ^ (v[7] << 16) ^ \
178: (v[7] >> 16); \
179: h[3] = (v[0] << 16) ^ (v[0] >> 16) ^ (v[0] & 0xffff0000) ^ \
180: (v[1] & 0xffff0000) ^ (v[1] >> 16) ^ (v[2] << 16) ^ (v[2] >> 16) ^ v[2] ^ \
181: (v[3] << 16) ^ (v[4] >> 16) ^ v[4] ^ (v[5] << 16) ^ (v[6] << 16) ^ \
182: (v[7] & 0xffff) ^ (v[7] >> 16); \
183: h[4] = (v[0] >> 16) ^ (v[1] << 16) ^ v[1] ^ (v[2] >> 16) ^ v[2] ^ \
184: (v[3] << 16) ^ (v[3] >> 16) ^ v[3] ^ (v[4] << 16) ^ (v[5] >> 16) ^ \
185: v[5] ^ (v[6] << 16) ^ (v[6] >> 16) ^ (v[7] << 16); \
186: h[5] = (v[0] << 16) ^ (v[0] & 0xffff0000) ^ (v[1] << 16) ^ (v[1] >> 16) ^ \
187: (v[1] & 0xffff0000) ^ (v[2] << 16) ^ v[2] ^ (v[3] >> 16) ^ v[3] ^ \
188: (v[4] << 16) ^ (v[4] >> 16) ^ v[4] ^ (v[5] << 16) ^ (v[6] << 16) ^ \
189: (v[6] >> 16) ^ v[6] ^ (v[7] << 16) ^ (v[7] >> 16) ^ (v[7] & 0xffff0000); \
190: h[6] = v[0] ^ v[2] ^ (v[2] >> 16) ^ v[3] ^ (v[3] << 16) ^ v[4] ^ \
191: (v[4] >> 16) ^ (v[5] << 16) ^ (v[5] >> 16) ^ v[5] ^ (v[6] << 16) ^ \
192: (v[6] >> 16) ^ v[6] ^ (v[7] << 16) ^ v[7]; \
193: h[7] = v[0] ^ (v[0] >> 16) ^ (v[1] << 16) ^ (v[1] >> 16) ^ (v[2] << 16) ^ \
194: (v[3] >> 16) ^ v[3] ^ (v[4] << 16) ^ v[4] ^ (v[5] >> 16) ^ v[5] ^ \
195: (v[6] << 16) ^ (v[6] >> 16) ^ (v[7] << 16) ^ v[7];
196:
197: #define PASS \
198: X(w, u, v); \
199: P(key, w); \
200: R(key, h, i, t, l, r); \
201: S(s, l, r); \
202: if (i != 6) { \
203: A(u, l, r); \
204: if (i == 2) { \
205: C(u); \
206: } \
207: AA(v, l, r); \
208: }
209:
210: static inline void Gost(php_hash_uint32 state[8], php_hash_uint32 data[8])
211: {
212: int i;
213: php_hash_uint32 l, r, t, key[8], u[8], v[8], w[8], s[8], *h = state, *m = data;
214:
215: memcpy(u, state, sizeof(u));
216: memcpy(v, data, sizeof(v));
217:
218: for (i = 0; i < 8; i += 2) {
219: PASS;
220: }
221: SHIFT12(u, m, s);
222: SHIFT16(h, v, u);
223: SHIFT61(h, v);
224: }
225: /* }}} */
226:
227: static inline void GostTransform(PHP_GOST_CTX *context, const unsigned char input[32])
228: {
229: int i, j;
230: php_hash_uint32 data[8], temp = 0, save = 0;
231:
232: for (i = 0, j = 0; i < 8; ++i, j += 4) {
233: data[i] = ((php_hash_uint32) input[j]) | (((php_hash_uint32) input[j + 1]) << 8) |
234: (((php_hash_uint32) input[j + 2]) << 16) | (((php_hash_uint32) input[j + 3]) << 24);
235: save = context->state[i + 8];
236: context->state[i + 8] += data[i] + temp;
237: temp = ((context->state[i + 8] < data[i]) || (context->state[i + 8] < save)) ? 1 : 0;
238: }
239:
240: Gost(context->state, data);
241: }
242:
243: PHP_HASH_API void PHP_GOSTInit(PHP_GOST_CTX *context)
244: {
245: memset(context, 0, sizeof(*context));
246: }
247:
248: static const php_hash_uint32 MAX32 = 0xffffffffLU;
249:
250: PHP_HASH_API void PHP_GOSTUpdate(PHP_GOST_CTX *context, const unsigned char *input, size_t len)
251: {
252: if ((MAX32 - context->count[0]) < (len * 8)) {
253: context->count[1]++;
254: context->count[0] = MAX32 - context->count[0];
255: context->count[0] = (len * 8) - context->count[0];
256: } else {
257: context->count[0] += len * 8;
258: }
259:
260: if (context->length + len < 32) {
261: memcpy(&context->buffer[context->length], input, len);
262: context->length += len;
263: } else {
264: size_t i = 0, r = (context->length + len) % 32;
265:
266: if (context->length) {
267: i = 32 - context->length;
268: memcpy(&context->buffer[context->length], input, i);
269: GostTransform(context, context->buffer);
270: }
271:
272: for (; i + 32 <= len; i += 32) {
273: GostTransform(context, input + i);
274: }
275:
276: memcpy(context->buffer, input + i, r);
277: memset(&context->buffer[r], 0, 32 - r);
278: context->length = r;
279: }
280: }
281:
282: PHP_HASH_API void PHP_GOSTFinal(unsigned char digest[32], PHP_GOST_CTX *context)
283: {
284: php_hash_uint32 i, j, l[8] = {0};
285:
286: if (context->length) {
287: GostTransform(context, context->buffer);
288: }
289:
290: memcpy(l, context->count, sizeof(context->count));
291: Gost(context->state, l);
292: memcpy(l, &context->state[8], sizeof(l));
293: Gost(context->state, l);
294:
295: for (i = 0, j = 0; j < 32; i++, j += 4) {
296: digest[j] = (unsigned char) (context->state[i] & 0xff);
297: digest[j + 1] = (unsigned char) ((context->state[i] >> 8) & 0xff);
298: digest[j + 2] = (unsigned char) ((context->state[i] >> 16) & 0xff);
299: digest[j + 3] = (unsigned char) ((context->state[i] >> 24) & 0xff);
300: }
301:
302: memset(context, 0, sizeof(*context));
303: }
304:
305: const php_hash_ops php_hash_gost_ops = {
306: (php_hash_init_func_t) PHP_GOSTInit,
307: (php_hash_update_func_t) PHP_GOSTUpdate,
308: (php_hash_final_func_t) PHP_GOSTFinal,
309: (php_hash_copy_func_t) php_hash_copy,
310: 32,
311: 32,
312: sizeof(PHP_GOST_CTX)
313: };
314:
315: /*
316: * Local variables:
317: * tab-width: 4
318: * c-basic-offset: 4
319: * End:
320: * vim600: sw=4 ts=4 fdm=marker
321: * vim<600: sw=4 ts=4
322: */
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