1 /*
2 +----------------------------------------------------------------------+
3 | PHP Version 5 |
4 +----------------------------------------------------------------------+
5 | Copyright (c) 1997-2014 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
20 /* $Id$ */
21
22 #include "php_hash.h"
23 #include "php_hash_tiger.h"
24 #include "php_hash_tiger_tables.h"
25
26 #if (defined(__APPLE__) || defined(__APPLE_CC__)) && (defined(__BIG_ENDIAN__) || defined(__LITTLE_ENDIAN__))
27 # if defined(__LITTLE_ENDIAN__)
28 # undef WORDS_BIGENDIAN
29 # else
30 # if defined(__BIG_ENDIAN__)
31 # define WORDS_BIGENDIAN
32 # endif
33 # endif
34 #endif
35
36 /* {{{ */
37 #define save_abc \
38 aa = a; \
39 bb = b; \
40 cc = c;
41
42 #define round(a,b,c,x,mul) \
43 c ^= x; \
44 a -= t1[(unsigned char)(c)] ^ \
45 t2[(unsigned char)(((php_hash_uint32)(c))>>(2*8))] ^ \
46 t3[(unsigned char)((c)>>(4*8))] ^ \
47 t4[(unsigned char)(((php_hash_uint32)((c)>>(4*8)))>>(2*8))] ; \
48 b += t4[(unsigned char)(((php_hash_uint32)(c))>>(1*8))] ^ \
49 t3[(unsigned char)(((php_hash_uint32)(c))>>(3*8))] ^ \
50 t2[(unsigned char)(((php_hash_uint32)((c)>>(4*8)))>>(1*8))] ^ \
51 t1[(unsigned char)(((php_hash_uint32)((c)>>(4*8)))>>(3*8))]; \
52 b *= mul;
53
54 #define pass(a,b,c,mul) \
55 round(a,b,c,x0,mul) \
56 round(b,c,a,x1,mul) \
57 round(c,a,b,x2,mul) \
58 round(a,b,c,x3,mul) \
59 round(b,c,a,x4,mul) \
60 round(c,a,b,x5,mul) \
61 round(a,b,c,x6,mul) \
62 round(b,c,a,x7,mul)
63
64 #define key_schedule \
65 x0 -= x7 ^ L64(0xA5A5A5A5A5A5A5A5); \
66 x1 ^= x0; \
67 x2 += x1; \
68 x3 -= x2 ^ ((~x1)<<19); \
69 x4 ^= x3; \
70 x5 += x4; \
71 x6 -= x5 ^ ((~x4)>>23); \
72 x7 ^= x6; \
73 x0 += x7; \
74 x1 -= x0 ^ ((~x7)<<19); \
75 x2 ^= x1; \
76 x3 += x2; \
77 x4 -= x3 ^ ((~x2)>>23); \
78 x5 ^= x4; \
79 x6 += x5; \
80 x7 -= x6 ^ L64(0x0123456789ABCDEF);
81
82 #define feedforward \
83 a ^= aa; \
84 b -= bb; \
85 c += cc;
86
87 #define compress(passes) \
88 save_abc \
89 pass(a,b,c,5) \
90 key_schedule \
91 pass(c,a,b,7) \
92 key_schedule \
93 pass(b,c,a,9) \
94 for(pass_no=0; pass_no<passes; pass_no++) { \
95 key_schedule \
96 pass(a,b,c,9) \
97 tmpa=a; a=c; c=b; b=tmpa; \
98 } \
99 feedforward
100
101 #define split_ex(str) \
102 x0=str[0]; x1=str[1]; x2=str[2]; x3=str[3]; \
103 x4=str[4]; x5=str[5]; x6=str[6]; x7=str[7];
104 #ifdef WORDS_BIGENDIAN
105 # define split(str) \
106 { \
107 int i; \
108 php_hash_uint64 tmp[8]; \
109 \
110 for (i = 0; i < 64; ++i) { \
111 ((unsigned char *) tmp)[i^7] = ((unsigned char *) str)[i]; \
112 } \
113 split_ex(tmp); \
114 }
115 #else
116 # define split split_ex
117 #endif
118
119 #define tiger_compress(passes, str, state) \
120 { \
121 register php_hash_uint64 a, b, c, tmpa, x0, x1, x2, x3, x4, x5, x6, x7; \
122 php_hash_uint64 aa, bb, cc; \
123 unsigned int pass_no; \
124 \
125 a = state[0]; \
126 b = state[1]; \
127 c = state[2]; \
128 \
129 split(str); \
130 \
131 compress(passes); \
132 \
133 state[0] = a; \
134 state[1] = b; \
135 state[2] = c; \
136 }
137 /* }}} */
138
TigerFinalize(PHP_TIGER_CTX * context)139 static inline void TigerFinalize(PHP_TIGER_CTX *context)
140 {
141 context->passed += (php_hash_uint64) context->length << 3;
142
143 context->buffer[context->length++] = 0x1;
144 if (context->length % 8) {
145 memset(&context->buffer[context->length], 0, 8-context->length%8);
146 context->length += 8-context->length%8;
147 }
148
149 if (context->length > 56) {
150 memset(&context->buffer[context->length], 0, 64 - context->length);
151 tiger_compress(context->passes, ((php_hash_uint64 *) context->buffer), context->state);
152 memset(context->buffer, 0, 56);
153 } else {
154 memset(&context->buffer[context->length], 0, 56 - context->length);
155 }
156
157 #ifndef WORDS_BIGENDIAN
158 memcpy(&context->buffer[56], &context->passed, sizeof(php_hash_uint64));
159 #else
160 context->buffer[56] = (unsigned char) (context->passed & 0xff);
161 context->buffer[57] = (unsigned char) ((context->passed >> 8) & 0xff);
162 context->buffer[58] = (unsigned char) ((context->passed >> 16) & 0xff);
163 context->buffer[59] = (unsigned char) ((context->passed >> 24) & 0xff);
164 context->buffer[60] = (unsigned char) ((context->passed >> 32) & 0xff);
165 context->buffer[61] = (unsigned char) ((context->passed >> 40) & 0xff);
166 context->buffer[62] = (unsigned char) ((context->passed >> 48) & 0xff);
167 context->buffer[63] = (unsigned char) ((context->passed >> 56) & 0xff);
168 #endif
169 tiger_compress(context->passes, ((php_hash_uint64 *) context->buffer), context->state);
170 }
171
TigerDigest(unsigned char * digest_str,unsigned int digest_len,PHP_TIGER_CTX * context)172 static inline void TigerDigest(unsigned char *digest_str, unsigned int digest_len, PHP_TIGER_CTX *context)
173 {
174 unsigned int i;
175
176 for (i = 0; i < digest_len; ++i) {
177 digest_str[i] = (unsigned char) ((context->state[i/8] >> (8 * (i%8))) & 0xff);
178 }
179 }
180
PHP_3TIGERInit(PHP_TIGER_CTX * context)181 PHP_HASH_API void PHP_3TIGERInit(PHP_TIGER_CTX *context)
182 {
183 memset(context, 0, sizeof(*context));
184 context->state[0] = L64(0x0123456789ABCDEF);
185 context->state[1] = L64(0xFEDCBA9876543210);
186 context->state[2] = L64(0xF096A5B4C3B2E187);
187 }
188
PHP_4TIGERInit(PHP_TIGER_CTX * context)189 PHP_HASH_API void PHP_4TIGERInit(PHP_TIGER_CTX *context)
190 {
191 memset(context, 0, sizeof(*context));
192 context->passes = 1;
193 context->state[0] = L64(0x0123456789ABCDEF);
194 context->state[1] = L64(0xFEDCBA9876543210);
195 context->state[2] = L64(0xF096A5B4C3B2E187);
196 }
197
PHP_TIGERUpdate(PHP_TIGER_CTX * context,const unsigned char * input,size_t len)198 PHP_HASH_API void PHP_TIGERUpdate(PHP_TIGER_CTX *context, const unsigned char *input, size_t len)
199 {
200 if (context->length + len < 64) {
201 memcpy(&context->buffer[context->length], input, len);
202 context->length += len;
203 } else {
204 size_t i = 0, r = (context->length + len) % 64;
205
206 if (context->length) {
207 i = 64 - context->length;
208 memcpy(&context->buffer[context->length], input, i);
209 tiger_compress(context->passes, ((const php_hash_uint64 *) context->buffer), context->state);
210 memset(context->buffer, 0, 64);
211 context->passed += 512;
212 }
213
214 for (; i + 64 <= len; i += 64) {
215 memcpy(context->buffer, &input[i], 64);
216 tiger_compress(context->passes, ((const php_hash_uint64 *) context->buffer), context->state);
217 context->passed += 512;
218 }
219 memset(&context->buffer[r], 0, 64-r);
220 memcpy(context->buffer, &input[i], r);
221 context->length = r;
222 }
223 }
224
PHP_TIGER128Final(unsigned char digest[16],PHP_TIGER_CTX * context)225 PHP_HASH_API void PHP_TIGER128Final(unsigned char digest[16], PHP_TIGER_CTX *context)
226 {
227 TigerFinalize(context);
228 TigerDigest(digest, 16, context);
229 memset(context, 0, sizeof(*context));
230 }
231
PHP_TIGER160Final(unsigned char digest[20],PHP_TIGER_CTX * context)232 PHP_HASH_API void PHP_TIGER160Final(unsigned char digest[20], PHP_TIGER_CTX *context)
233 {
234 TigerFinalize(context);
235 TigerDigest(digest, 20, context);
236 memset(context, 0, sizeof(*context));
237 }
238
PHP_TIGER192Final(unsigned char digest[24],PHP_TIGER_CTX * context)239 PHP_HASH_API void PHP_TIGER192Final(unsigned char digest[24], PHP_TIGER_CTX *context)
240 {
241 TigerFinalize(context);
242 TigerDigest(digest, 24, context);
243 memset(context, 0, sizeof(*context));
244 }
245
246 #define PHP_HASH_TIGER_OPS(p, b) \
247 const php_hash_ops php_hash_##p##tiger##b##_ops = { \
248 (php_hash_init_func_t) PHP_##p##TIGERInit, \
249 (php_hash_update_func_t) PHP_TIGERUpdate, \
250 (php_hash_final_func_t) PHP_TIGER##b##Final, \
251 (php_hash_copy_func_t) php_hash_copy, \
252 b/8, \
253 64, \
254 sizeof(PHP_TIGER_CTX) \
255 }
256
257 PHP_HASH_TIGER_OPS(3, 128);
258 PHP_HASH_TIGER_OPS(3, 160);
259 PHP_HASH_TIGER_OPS(3, 192);
260 PHP_HASH_TIGER_OPS(4, 128);
261 PHP_HASH_TIGER_OPS(4, 160);
262 PHP_HASH_TIGER_OPS(4, 192);
263
264 /*
265 * Local variables:
266 * tab-width: 4
267 * c-basic-offset: 4
268 * End:
269 * vim600: sw=4 ts=4 fdm=marker
270 * vim<600: sw=4 ts=4
271 */
272
