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134bfe56 MC |
1 | /* |
2 | * Copyright 2016 The OpenSSL Project Authors. All Rights Reserved. | |
3 | * | |
4 | * Licensed under the OpenSSL license (the "License"). You may not use | |
5 | * this file except in compliance with the License. You can obtain a copy | |
6 | * in the file LICENSE in the source distribution or at | |
7 | * https://www.openssl.org/source/license.html | |
8 | */ | |
9 | ||
10 | #include <openssl/ssl.h> | |
11 | #include <openssl/evp.h> | |
12 | #include "../ssl/ssl_locl.h" | |
13 | ||
14 | #include "testutil.h" | |
fb83f20c | 15 | #include "test_main.h" |
134bfe56 MC |
16 | |
17 | #define IVLEN 12 | |
18 | #define KEYLEN 16 | |
19 | ||
20 | /* The following are unofficial test vectors generated from a locally modified | |
21 | * version of picotls. | |
22 | * TODO(TLS1.3): As and when official vectors become available we should use | |
23 | * those, e.g. see | |
24 | * https://www.ietf.org/id/draft-thomson-tls-tls13-vectors-00.txt, however at | |
25 | * the time of writing these are not suitable because they are based on | |
26 | * draft -16, which works slightly differently to the draft -18 vectors below. | |
27 | */ | |
28 | ||
29 | static unsigned char hs_start_hash[] = { | |
30 | 0xec, 0x14, 0x7a, 0x06, 0xde, 0xa3, 0xc8, 0x84, 0x6c, 0x02, 0xb2, 0x23, 0x8e, | |
31 | 0x41, 0xbd, 0xdc, 0x9d, 0x89, 0xf9, 0xae, 0xa1, 0x7b, 0x5e, 0xfd, 0x4d, 0x74, | |
32 | 0x82, 0xaf, 0x75, 0x88, 0x1c, 0x0a | |
33 | }; | |
34 | ||
35 | static unsigned char hs_full_hash[] = { | |
36 | 0x75, 0x1a, 0x3d, 0x4a, 0x14, 0xdf, 0xab, 0xeb, 0x68, 0xe9, 0x2c, 0xa5, 0x91, | |
37 | 0x8e, 0x24, 0x08, 0xb9, 0xbc, 0xb0, 0x74, 0x89, 0x82, 0xec, 0x9c, 0x32, 0x30, | |
38 | 0xac, 0x30, 0xbb, 0xeb, 0x23, 0xe2, | |
39 | }; | |
40 | ||
41 | static unsigned char early_secret[] = { | |
42 | 0x33, 0xad, 0x0a, 0x1c, 0x60, 0x7e, 0xc0, 0x3b, 0x09, 0xe6, 0xcd, 0x98, 0x93, | |
43 | 0x68, 0x0c, 0xe2, 0x10, 0xad, 0xf3, 0x00, 0xaa, 0x1f, 0x26, 0x60, 0xe1, 0xb2, | |
44 | 0x2e, 0x10, 0xf1, 0x70, 0xf9, 0x2a | |
45 | }; | |
46 | ||
47 | static unsigned char ecdhe_secret[] = { | |
48 | 0xe7, 0xb8, 0xfe, 0xf8, 0x90, 0x3b, 0x52, 0x0c, 0xb9, 0xa1, 0x89, 0x71, 0xb6, | |
49 | 0x9d, 0xd4, 0x5d, 0xca, 0x53, 0xce, 0x2f, 0x12, 0xbf, 0x3b, 0xef, 0x93, 0x15, | |
50 | 0xe3, 0x12, 0x71, 0xdf, 0x4b, 0x40 | |
51 | }; | |
52 | ||
53 | static unsigned char handshake_secret[] = { | |
54 | 0xdf, 0xc9, 0x41, 0xd8, 0x26, 0x93, 0x2a, 0x59, 0x11, 0xb3, 0xb7, 0xd0, 0x38, | |
55 | 0xcb, 0x65, 0x6f, 0xda, 0xaf, 0x77, 0x07, 0x1e, 0x40, 0x9a, 0x9b, 0xa6, 0xca, | |
56 | 0x74, 0xda, 0x17, 0xb4, 0xe0, 0x04, | |
57 | }; | |
58 | ||
59 | static const char *client_hts_label = "client handshake traffic secret"; | |
60 | ||
61 | static unsigned char client_hts[] = { | |
62 | 0x4b, 0x38, 0x48, 0xf1, 0x5d, 0xb1, 0x5e, 0x88, 0xcf, 0x3e, 0x3b, 0xff, 0xa6, | |
63 | 0xba, 0x02, 0xc1, 0xc5, 0xd1, 0xe5, 0xb1, 0xc3, 0xf3, 0x10, 0xdf, 0xe5, 0xc9, | |
64 | 0x69, 0x5a, 0x4a, 0xc6, 0x06, 0x38, | |
65 | }; | |
66 | ||
67 | static unsigned char client_hts_key[] = { | |
68 | 0xe5, 0x7b, 0x8c, 0x38, 0x6d, 0x6f, 0x09, 0x14, 0xe2, 0xe5, 0x4e, 0x36, 0x23, | |
69 | 0x91, 0x2a, 0xd4 | |
70 | }; | |
71 | ||
72 | static unsigned char client_hts_iv[] = { | |
73 | 0x4d, 0x2e, 0x61, 0x0c, 0x4d, 0x3a, 0x8e, 0x5f, 0x15, 0x41, 0x1e, 0xfd | |
74 | }; | |
75 | ||
76 | static const char *server_hts_label = "server handshake traffic secret"; | |
77 | ||
78 | static unsigned char server_hts[] = { | |
79 | 0x74, 0x1f, 0xb3, 0xb8, 0x41, 0x24, 0xc4, 0x7e, 0x1b, 0x2e, 0xa9, 0x4f, 0x0c, | |
80 | 0x42, 0xc9, 0x06, 0xb7, 0x7c, 0x84, 0x92, 0x05, 0xed, 0x5f, 0x19, 0xda, 0xbb, | |
81 | 0xbb, 0xce, 0xc7, 0x29, 0x06, 0x7e, | |
82 | }; | |
83 | ||
84 | static unsigned char server_hts_key[] = { | |
85 | 0x72, 0x61, 0x1c, 0xc8, 0x0d, 0x65, 0x9c, 0x89, 0xf8, 0x94, 0x9e, 0x32, 0x67, | |
86 | 0xe1, 0x6c, 0x2d | |
87 | ||
88 | }; | |
89 | ||
90 | static unsigned char server_hts_iv[] = { | |
91 | 0x43, 0xfe, 0x11, 0x29, 0x0f, 0xe8, 0xfe, 0x84, 0x9c, 0x9b, 0x21, 0xef, | |
92 | }; | |
93 | ||
94 | static unsigned char master_secret[] = { | |
95 | 0xfe, 0x8d, 0xfb, 0xd0, 0x14, 0x94, 0x4e, 0x22, 0x65, 0x16, 0x7d, 0xc4, 0x20, | |
96 | 0x01, 0x5b, 0x10, 0x64, 0x74, 0xb7, 0x22, 0x9a, 0x95, 0xd1, 0x48, 0x0c, 0xb9, | |
97 | 0xac, 0xd1, 0xa0, 0x28, 0xb7, 0x67 | |
98 | }; | |
99 | ||
100 | static const char *client_ats_label = "client application traffic secret"; | |
101 | ||
102 | static unsigned char client_ats[] = { | |
103 | 0x56, 0x9e, 0x9c, 0x17, 0xe3, 0x52, 0x1f, 0xdd, 0x09, 0xf4, 0xb8, 0x4f, 0x6c, | |
104 | 0xd6, 0x6d, 0xa8, 0x23, 0xde, 0xeb, 0x81, 0xbb, 0xb1, 0xde, 0x61, 0xe2, 0x82, | |
105 | 0x56, 0x27, 0xf7, 0x00, 0x63, 0x81, | |
106 | }; | |
107 | ||
108 | static unsigned char client_ats_key[] = { | |
109 | 0xcb, 0xfa, 0xae, 0x71, 0x8d, 0xfb, 0x52, 0xba, 0x7b, 0x87, 0xde, 0x8b, 0x6d, | |
110 | 0xac, 0x92, 0x60 | |
111 | }; | |
112 | ||
113 | static unsigned char client_ats_iv[] = { | |
114 | 0x74, 0x86, 0x88, 0xe9, 0x7f, 0x72, 0xfb, 0xf3, 0x33, 0x1e, 0xfb, 0x55 | |
115 | }; | |
116 | ||
117 | static const char *server_ats_label = "server application traffic secret"; | |
118 | ||
119 | static unsigned char server_ats[] = { | |
120 | 0xd1, 0xbf, 0xdc, 0x8b, 0x84, 0xf4, 0x16, 0xb7, 0xc6, 0x90, 0xd9, 0xc9, 0x2c, | |
121 | 0x23, 0x11, 0xb3, 0x05, 0xad, 0x75, 0xfc, 0xe6, 0x29, 0x90, 0x2b, 0xe1, 0x03, | |
122 | 0xdd, 0x0c, 0x12, 0x51, 0xea, 0xd2, | |
123 | }; | |
124 | ||
125 | static unsigned char server_ats_key[] = { | |
126 | 0x35, 0xc2, 0xd1, 0x54, 0xa8, 0x43, 0x03, 0xc6, 0x55, 0xa0, 0x2e, 0x5e, 0x1f, | |
127 | 0x82, 0x31, 0x62 | |
128 | }; | |
129 | ||
130 | static unsigned char server_ats_iv[] = { | |
131 | 0xe5, 0x77, 0xd9, 0x8a, 0xb3, 0x2e, 0xec, 0x79, 0xb1, 0x63, 0x68, 0xc2 | |
132 | }; | |
133 | ||
134 | /* Mocked out implementations of various functions */ | |
135 | int ssl3_digest_cached_records(SSL *s, int keep) | |
136 | { | |
137 | return 1; | |
138 | } | |
139 | ||
140 | static int full_hash = 0; | |
141 | ||
142 | /* Give a hash of the currently set handshake */ | |
143 | int ssl_handshake_hash(SSL *s, unsigned char *out, size_t outlen, | |
144 | size_t *hashlen) | |
145 | { | |
146 | if (sizeof(hs_start_hash) > outlen | |
147 | || sizeof(hs_full_hash) != sizeof(hs_start_hash)) | |
148 | return 0; | |
149 | ||
150 | if (full_hash) { | |
151 | memcpy(out, hs_full_hash, sizeof(hs_full_hash)); | |
152 | *hashlen = sizeof(hs_full_hash); | |
153 | } else { | |
154 | memcpy(out, hs_start_hash, sizeof(hs_start_hash)); | |
155 | *hashlen = sizeof(hs_start_hash); | |
156 | } | |
157 | ||
158 | return 1; | |
159 | } | |
160 | ||
161 | const EVP_MD *ssl_handshake_md(SSL *s) | |
162 | { | |
163 | return EVP_sha256(); | |
164 | } | |
165 | ||
0d9824c1 MC |
166 | void RECORD_LAYER_reset_read_sequence(RECORD_LAYER *rl) |
167 | { | |
168 | } | |
169 | ||
170 | void RECORD_LAYER_reset_write_sequence(RECORD_LAYER *rl) | |
171 | { | |
172 | } | |
173 | ||
92760c21 MC |
174 | int ssl_cipher_get_evp(const SSL_SESSION *s, const EVP_CIPHER **enc, |
175 | const EVP_MD **md, int *mac_pkey_type, | |
176 | size_t *mac_secret_size, SSL_COMP **comp, int use_etm) | |
177 | ||
178 | { | |
179 | return 0; | |
180 | } | |
181 | ||
04904312 MC |
182 | int tls1_alert_code(int code) |
183 | { | |
184 | return code; | |
185 | } | |
186 | ||
134bfe56 MC |
187 | /* End of mocked out code */ |
188 | ||
189 | static int test_secret(SSL *s, unsigned char *prk, | |
190 | const unsigned char *label, size_t labellen, | |
191 | const unsigned char *ref_secret, | |
192 | const unsigned char *ref_key, const unsigned char *ref_iv) | |
193 | { | |
ace081c1 | 194 | size_t hashsize; |
134bfe56 | 195 | unsigned char gensecret[EVP_MAX_MD_SIZE]; |
ace081c1 | 196 | unsigned char hash[EVP_MAX_MD_SIZE]; |
134bfe56 MC |
197 | unsigned char key[KEYLEN]; |
198 | unsigned char iv[IVLEN]; | |
199 | ||
ace081c1 MC |
200 | if (!ssl_handshake_hash(s, hash, sizeof(hash), &hashsize)) { |
201 | fprintf(stderr, "Failed to get hash\n"); | |
202 | return 0; | |
203 | } | |
204 | ||
205 | if (!tls13_hkdf_expand(s, prk, label, labellen, hash, gensecret, | |
206 | hashsize)) { | |
134bfe56 MC |
207 | fprintf(stderr, "Secret generation failed\n"); |
208 | return 0; | |
209 | } | |
210 | ||
211 | if (memcmp(gensecret, ref_secret, hashsize) != 0) { | |
212 | fprintf(stderr, "Generated secret does not match\n"); | |
213 | return 0; | |
214 | } | |
215 | ||
216 | if (!tls13_derive_key(s, gensecret, key, KEYLEN)) { | |
217 | fprintf(stderr, "Key generation failed\n"); | |
218 | return 0; | |
219 | } | |
220 | ||
221 | if (memcmp(key, ref_key, KEYLEN) != 0) { | |
222 | fprintf(stderr, "Generated key does not match\n"); | |
223 | return 0; | |
224 | } | |
225 | ||
226 | if (!tls13_derive_iv(s, gensecret, iv, IVLEN)) { | |
227 | fprintf(stderr, "IV generation failed\n"); | |
228 | return 0; | |
229 | } | |
230 | ||
231 | if (memcmp(iv, ref_iv, IVLEN) != 0) { | |
232 | fprintf(stderr, "Generated IV does not match\n"); | |
233 | return 0; | |
234 | } | |
235 | ||
236 | return 1; | |
237 | } | |
238 | ||
239 | static int test_handshake_secrets(void) | |
240 | { | |
241 | SSL_CTX *ctx = NULL; | |
242 | SSL *s = NULL; | |
243 | int ret = 0; | |
244 | size_t hashsize; | |
245 | unsigned char out_master_secret[EVP_MAX_MD_SIZE]; | |
246 | size_t master_secret_length; | |
247 | ||
248 | ctx = SSL_CTX_new(TLS_method()); | |
249 | if (ctx == NULL) | |
250 | goto err; | |
251 | ||
252 | s = SSL_new(ctx); | |
253 | if (s == NULL) | |
254 | goto err; | |
255 | ||
256 | if (!tls13_generate_early_secret(s, NULL, 0)) { | |
257 | fprintf(stderr, "Early secret generation failed\n"); | |
258 | goto err; | |
259 | } | |
260 | ||
261 | if (memcmp(s->early_secret, early_secret, sizeof(early_secret)) != 0) { | |
262 | fprintf(stderr, "Early secret does not match\n"); | |
263 | goto err; | |
264 | } | |
265 | ||
266 | if (!tls13_generate_handshake_secret(s, ecdhe_secret, | |
267 | sizeof(ecdhe_secret))) { | |
268 | fprintf(stderr, "Hanshake secret generation failed\n"); | |
269 | goto err; | |
270 | } | |
271 | ||
272 | if (memcmp(s->handshake_secret, handshake_secret, | |
273 | sizeof(handshake_secret)) != 0) { | |
274 | fprintf(stderr, "Handshake secret does not match\n"); | |
275 | goto err; | |
276 | } | |
277 | ||
278 | hashsize = EVP_MD_size(ssl_handshake_md(s)); | |
279 | if (sizeof(client_hts) != hashsize || sizeof(client_hts_key) != KEYLEN | |
280 | || sizeof(client_hts_iv) != IVLEN) { | |
281 | fprintf(stderr, "Internal test error\n"); | |
282 | goto err; | |
283 | } | |
284 | ||
285 | if (!test_secret(s, s->handshake_secret, (unsigned char *)client_hts_label, | |
286 | strlen(client_hts_label), client_hts, client_hts_key, | |
287 | client_hts_iv)) { | |
288 | fprintf(stderr, "Client handshake secret test failed\n"); | |
289 | goto err; | |
290 | } | |
291 | ||
292 | if (sizeof(server_hts) != hashsize || sizeof(server_hts_key) != KEYLEN | |
293 | || sizeof(server_hts_iv) != IVLEN) { | |
294 | fprintf(stderr, "Internal test error\n"); | |
295 | goto err; | |
296 | } | |
297 | ||
298 | if (!test_secret(s, s->handshake_secret, (unsigned char *)server_hts_label, | |
299 | strlen(server_hts_label), server_hts, server_hts_key, | |
300 | server_hts_iv)) { | |
301 | fprintf(stderr, "Server handshake secret test failed\n"); | |
302 | goto err; | |
303 | } | |
304 | ||
305 | /* | |
306 | * Ensure the mocked out ssl_handshake_hash() returns the full handshake | |
307 | * hash. | |
308 | */ | |
309 | full_hash = 1; | |
310 | ||
311 | if (!tls13_generate_master_secret(s, out_master_secret, | |
312 | s->handshake_secret, hashsize, | |
313 | &master_secret_length)) { | |
314 | fprintf(stderr, "Master secret generation failed\n"); | |
315 | goto err; | |
316 | } | |
317 | ||
318 | if (master_secret_length != sizeof(master_secret) || | |
319 | memcmp(out_master_secret, master_secret, | |
320 | sizeof(master_secret)) != 0) { | |
321 | fprintf(stderr, "Master secret does not match\n"); | |
322 | goto err; | |
323 | } | |
324 | ||
325 | if (sizeof(client_ats) != hashsize || sizeof(client_ats_key) != KEYLEN | |
326 | || sizeof(client_ats_iv) != IVLEN) { | |
327 | fprintf(stderr, "Internal test error\n"); | |
328 | goto err; | |
329 | } | |
330 | ||
331 | if (!test_secret(s, out_master_secret, (unsigned char *)client_ats_label, | |
332 | strlen(client_ats_label), client_ats, client_ats_key, | |
333 | client_ats_iv)) { | |
334 | fprintf(stderr, "Client application data secret test failed\n"); | |
335 | goto err; | |
336 | } | |
337 | ||
338 | if (sizeof(server_ats) != hashsize || sizeof(server_ats_key) != KEYLEN | |
339 | || sizeof(server_ats_iv) != IVLEN) { | |
340 | fprintf(stderr, "Internal test error\n"); | |
341 | goto err; | |
342 | } | |
343 | ||
344 | if (!test_secret(s, out_master_secret, (unsigned char *)server_ats_label, | |
345 | strlen(server_ats_label), server_ats, server_ats_key, | |
346 | server_ats_iv)) { | |
347 | fprintf(stderr, "Server application data secret test failed\n"); | |
348 | goto err; | |
349 | } | |
350 | ||
351 | ret = 1; | |
352 | err: | |
353 | SSL_free(s); | |
354 | SSL_CTX_free(ctx); | |
355 | return ret; | |
356 | } | |
357 | ||
fb83f20c | 358 | void register_tests() |
134bfe56 | 359 | { |
134bfe56 | 360 | ADD_TEST(test_handshake_secrets); |
134bfe56 | 361 | } |