Mercurial > hg > nginx-quic
annotate src/core/ngx_md5.c @ 8606:062080651d50 quic
Changed the OpenSSL QUIC support detection.
As was changed in 253cf267f95a.
author | Ruslan Ermilov <ru@nginx.com> |
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date | Thu, 09 Sep 2021 15:34:00 +0300 |
parents | 9eefb38f0005 |
children |
rev | line source |
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3895 | 1 |
2 /* | |
3 * An internal implementation, based on Alexander Peslyak's | |
4 * public domain implementation: | |
5 * http://openwall.info/wiki/people/solar/software/public-domain-source-code/md5 | |
6 */ | |
7 | |
8 | |
9 #include <ngx_config.h> | |
10 #include <ngx_core.h> | |
11 #include <ngx_md5.h> | |
12 | |
13 | |
14 static const u_char *ngx_md5_body(ngx_md5_t *ctx, const u_char *data, | |
15 size_t size); | |
16 | |
17 | |
18 void | |
19 ngx_md5_init(ngx_md5_t *ctx) | |
20 { | |
21 ctx->a = 0x67452301; | |
22 ctx->b = 0xefcdab89; | |
23 ctx->c = 0x98badcfe; | |
24 ctx->d = 0x10325476; | |
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25 |
3895 | 26 ctx->bytes = 0; |
27 } | |
28 | |
29 | |
30 void | |
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31 ngx_md5_update(ngx_md5_t *ctx, const void *data, size_t size) |
3895 | 32 { |
33 size_t used, free; | |
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34 |
3941 | 35 used = (size_t) (ctx->bytes & 0x3f); |
3895 | 36 ctx->bytes += size; |
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37 |
3895 | 38 if (used) { |
39 free = 64 - used; | |
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40 |
3895 | 41 if (size < free) { |
42 ngx_memcpy(&ctx->buffer[used], data, size); | |
43 return; | |
44 } | |
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45 |
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Reverted incorrect change in internal md5 (part of r3928).
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46 ngx_memcpy(&ctx->buffer[used], data, free); |
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47 data = (u_char *) data + free; |
3895 | 48 size -= free; |
49 (void) ngx_md5_body(ctx, ctx->buffer, 64); | |
50 } | |
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51 |
3895 | 52 if (size >= 64) { |
53 data = ngx_md5_body(ctx, data, size & ~(size_t) 0x3f); | |
54 size &= 0x3f; | |
55 } | |
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56 |
3895 | 57 ngx_memcpy(ctx->buffer, data, size); |
58 } | |
59 | |
60 | |
61 void | |
62 ngx_md5_final(u_char result[16], ngx_md5_t *ctx) | |
63 { | |
64 size_t used, free; | |
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65 |
3941 | 66 used = (size_t) (ctx->bytes & 0x3f); |
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67 |
3895 | 68 ctx->buffer[used++] = 0x80; |
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69 |
3895 | 70 free = 64 - used; |
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71 |
3895 | 72 if (free < 8) { |
73 ngx_memzero(&ctx->buffer[used], free); | |
74 (void) ngx_md5_body(ctx, ctx->buffer, 64); | |
75 used = 0; | |
76 free = 64; | |
77 } | |
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78 |
3895 | 79 ngx_memzero(&ctx->buffer[used], free - 8); |
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80 |
3895 | 81 ctx->bytes <<= 3; |
3941 | 82 ctx->buffer[56] = (u_char) ctx->bytes; |
83 ctx->buffer[57] = (u_char) (ctx->bytes >> 8); | |
84 ctx->buffer[58] = (u_char) (ctx->bytes >> 16); | |
85 ctx->buffer[59] = (u_char) (ctx->bytes >> 24); | |
86 ctx->buffer[60] = (u_char) (ctx->bytes >> 32); | |
87 ctx->buffer[61] = (u_char) (ctx->bytes >> 40); | |
88 ctx->buffer[62] = (u_char) (ctx->bytes >> 48); | |
89 ctx->buffer[63] = (u_char) (ctx->bytes >> 56); | |
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90 |
3895 | 91 (void) ngx_md5_body(ctx, ctx->buffer, 64); |
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92 |
3941 | 93 result[0] = (u_char) ctx->a; |
94 result[1] = (u_char) (ctx->a >> 8); | |
95 result[2] = (u_char) (ctx->a >> 16); | |
96 result[3] = (u_char) (ctx->a >> 24); | |
97 result[4] = (u_char) ctx->b; | |
98 result[5] = (u_char) (ctx->b >> 8); | |
99 result[6] = (u_char) (ctx->b >> 16); | |
100 result[7] = (u_char) (ctx->b >> 24); | |
101 result[8] = (u_char) ctx->c; | |
102 result[9] = (u_char) (ctx->c >> 8); | |
103 result[10] = (u_char) (ctx->c >> 16); | |
104 result[11] = (u_char) (ctx->c >> 24); | |
105 result[12] = (u_char) ctx->d; | |
106 result[13] = (u_char) (ctx->d >> 8); | |
107 result[14] = (u_char) (ctx->d >> 16); | |
108 result[15] = (u_char) (ctx->d >> 24); | |
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109 |
3895 | 110 ngx_memzero(ctx, sizeof(*ctx)); |
111 } | |
112 | |
113 | |
114 /* | |
115 * The basic MD5 functions. | |
116 * | |
117 * F and G are optimized compared to their RFC 1321 definitions for | |
118 * architectures that lack an AND-NOT instruction, just like in | |
119 * Colin Plumb's implementation. | |
120 */ | |
121 | |
122 #define F(x, y, z) ((z) ^ ((x) & ((y) ^ (z)))) | |
123 #define G(x, y, z) ((y) ^ ((z) & ((x) ^ (y)))) | |
124 #define H(x, y, z) ((x) ^ (y) ^ (z)) | |
125 #define I(x, y, z) ((y) ^ ((x) | ~(z))) | |
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126 |
3895 | 127 /* |
128 * The MD5 transformation for all four rounds. | |
129 */ | |
130 | |
131 #define STEP(f, a, b, c, d, x, t, s) \ | |
132 (a) += f((b), (c), (d)) + (x) + (t); \ | |
133 (a) = (((a) << (s)) | (((a) & 0xffffffff) >> (32 - (s)))); \ | |
134 (a) += (b) | |
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135 |
3895 | 136 /* |
137 * SET() reads 4 input bytes in little-endian byte order and stores them | |
138 * in a properly aligned word in host byte order. | |
139 * | |
140 * The check for little-endian architectures that tolerate unaligned | |
141 * memory accesses is just an optimization. Nothing will break if it | |
142 * does not work. | |
143 */ | |
144 | |
145 #if (NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) | |
146 | |
147 #define SET(n) (*(uint32_t *) &p[n * 4]) | |
148 #define GET(n) (*(uint32_t *) &p[n * 4]) | |
149 | |
150 #else | |
151 | |
152 #define SET(n) \ | |
153 (block[n] = \ | |
154 (uint32_t) p[n * 4] | \ | |
155 ((uint32_t) p[n * 4 + 1] << 8) | \ | |
156 ((uint32_t) p[n * 4 + 2] << 16) | \ | |
157 ((uint32_t) p[n * 4 + 3] << 24)) | |
158 | |
159 #define GET(n) block[n] | |
160 | |
161 #endif | |
162 | |
163 | |
164 /* | |
165 * This processes one or more 64-byte data blocks, but does not update | |
166 * the bit counters. There are no alignment requirements. | |
167 */ | |
168 | |
169 static const u_char * | |
170 ngx_md5_body(ngx_md5_t *ctx, const u_char *data, size_t size) | |
171 { | |
172 uint32_t a, b, c, d; | |
173 uint32_t saved_a, saved_b, saved_c, saved_d; | |
174 const u_char *p; | |
175 #if !(NGX_HAVE_LITTLE_ENDIAN && NGX_HAVE_NONALIGNED) | |
176 uint32_t block[16]; | |
177 #endif | |
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178 |
3895 | 179 p = data; |
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180 |
3895 | 181 a = ctx->a; |
182 b = ctx->b; | |
183 c = ctx->c; | |
184 d = ctx->d; | |
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185 |
3895 | 186 do { |
187 saved_a = a; | |
188 saved_b = b; | |
189 saved_c = c; | |
190 saved_d = d; | |
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191 |
3895 | 192 /* Round 1 */ |
193 | |
194 STEP(F, a, b, c, d, SET(0), 0xd76aa478, 7); | |
195 STEP(F, d, a, b, c, SET(1), 0xe8c7b756, 12); | |
196 STEP(F, c, d, a, b, SET(2), 0x242070db, 17); | |
197 STEP(F, b, c, d, a, SET(3), 0xc1bdceee, 22); | |
198 STEP(F, a, b, c, d, SET(4), 0xf57c0faf, 7); | |
199 STEP(F, d, a, b, c, SET(5), 0x4787c62a, 12); | |
200 STEP(F, c, d, a, b, SET(6), 0xa8304613, 17); | |
201 STEP(F, b, c, d, a, SET(7), 0xfd469501, 22); | |
202 STEP(F, a, b, c, d, SET(8), 0x698098d8, 7); | |
203 STEP(F, d, a, b, c, SET(9), 0x8b44f7af, 12); | |
204 STEP(F, c, d, a, b, SET(10), 0xffff5bb1, 17); | |
205 STEP(F, b, c, d, a, SET(11), 0x895cd7be, 22); | |
206 STEP(F, a, b, c, d, SET(12), 0x6b901122, 7); | |
207 STEP(F, d, a, b, c, SET(13), 0xfd987193, 12); | |
208 STEP(F, c, d, a, b, SET(14), 0xa679438e, 17); | |
209 STEP(F, b, c, d, a, SET(15), 0x49b40821, 22); | |
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210 |
3895 | 211 /* Round 2 */ |
212 | |
213 STEP(G, a, b, c, d, GET(1), 0xf61e2562, 5); | |
214 STEP(G, d, a, b, c, GET(6), 0xc040b340, 9); | |
215 STEP(G, c, d, a, b, GET(11), 0x265e5a51, 14); | |
216 STEP(G, b, c, d, a, GET(0), 0xe9b6c7aa, 20); | |
217 STEP(G, a, b, c, d, GET(5), 0xd62f105d, 5); | |
218 STEP(G, d, a, b, c, GET(10), 0x02441453, 9); | |
219 STEP(G, c, d, a, b, GET(15), 0xd8a1e681, 14); | |
220 STEP(G, b, c, d, a, GET(4), 0xe7d3fbc8, 20); | |
221 STEP(G, a, b, c, d, GET(9), 0x21e1cde6, 5); | |
222 STEP(G, d, a, b, c, GET(14), 0xc33707d6, 9); | |
223 STEP(G, c, d, a, b, GET(3), 0xf4d50d87, 14); | |
224 STEP(G, b, c, d, a, GET(8), 0x455a14ed, 20); | |
225 STEP(G, a, b, c, d, GET(13), 0xa9e3e905, 5); | |
226 STEP(G, d, a, b, c, GET(2), 0xfcefa3f8, 9); | |
227 STEP(G, c, d, a, b, GET(7), 0x676f02d9, 14); | |
228 STEP(G, b, c, d, a, GET(12), 0x8d2a4c8a, 20); | |
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229 |
3895 | 230 /* Round 3 */ |
231 | |
232 STEP(H, a, b, c, d, GET(5), 0xfffa3942, 4); | |
233 STEP(H, d, a, b, c, GET(8), 0x8771f681, 11); | |
234 STEP(H, c, d, a, b, GET(11), 0x6d9d6122, 16); | |
235 STEP(H, b, c, d, a, GET(14), 0xfde5380c, 23); | |
236 STEP(H, a, b, c, d, GET(1), 0xa4beea44, 4); | |
237 STEP(H, d, a, b, c, GET(4), 0x4bdecfa9, 11); | |
238 STEP(H, c, d, a, b, GET(7), 0xf6bb4b60, 16); | |
239 STEP(H, b, c, d, a, GET(10), 0xbebfbc70, 23); | |
240 STEP(H, a, b, c, d, GET(13), 0x289b7ec6, 4); | |
241 STEP(H, d, a, b, c, GET(0), 0xeaa127fa, 11); | |
242 STEP(H, c, d, a, b, GET(3), 0xd4ef3085, 16); | |
243 STEP(H, b, c, d, a, GET(6), 0x04881d05, 23); | |
244 STEP(H, a, b, c, d, GET(9), 0xd9d4d039, 4); | |
245 STEP(H, d, a, b, c, GET(12), 0xe6db99e5, 11); | |
246 STEP(H, c, d, a, b, GET(15), 0x1fa27cf8, 16); | |
247 STEP(H, b, c, d, a, GET(2), 0xc4ac5665, 23); | |
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248 |
3895 | 249 /* Round 4 */ |
250 | |
251 STEP(I, a, b, c, d, GET(0), 0xf4292244, 6); | |
252 STEP(I, d, a, b, c, GET(7), 0x432aff97, 10); | |
253 STEP(I, c, d, a, b, GET(14), 0xab9423a7, 15); | |
254 STEP(I, b, c, d, a, GET(5), 0xfc93a039, 21); | |
255 STEP(I, a, b, c, d, GET(12), 0x655b59c3, 6); | |
256 STEP(I, d, a, b, c, GET(3), 0x8f0ccc92, 10); | |
257 STEP(I, c, d, a, b, GET(10), 0xffeff47d, 15); | |
258 STEP(I, b, c, d, a, GET(1), 0x85845dd1, 21); | |
259 STEP(I, a, b, c, d, GET(8), 0x6fa87e4f, 6); | |
260 STEP(I, d, a, b, c, GET(15), 0xfe2ce6e0, 10); | |
261 STEP(I, c, d, a, b, GET(6), 0xa3014314, 15); | |
262 STEP(I, b, c, d, a, GET(13), 0x4e0811a1, 21); | |
263 STEP(I, a, b, c, d, GET(4), 0xf7537e82, 6); | |
264 STEP(I, d, a, b, c, GET(11), 0xbd3af235, 10); | |
265 STEP(I, c, d, a, b, GET(2), 0x2ad7d2bb, 15); | |
266 STEP(I, b, c, d, a, GET(9), 0xeb86d391, 21); | |
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267 |
3895 | 268 a += saved_a; |
269 b += saved_b; | |
270 c += saved_c; | |
271 d += saved_d; | |
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272 |
3895 | 273 p += 64; |
274 | |
275 } while (size -= 64); | |
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276 |
3895 | 277 ctx->a = a; |
278 ctx->b = b; | |
279 ctx->c = c; | |
280 ctx->d = d; | |
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281 |
3895 | 282 return p; |
283 } |