1 /* 2 * Copyright 2016-2021 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (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_local.h" 13 #include "../ssl/record/record_local.h" 14 #include "internal/nelem.h" 15 #include "testutil.h" 16 17 /* 18 * Based on the test vectors provided in: 19 * https://tools.ietf.org/html/draft-ietf-tls-tls13-vectors-06 20 */ 21 22 typedef struct { 23 /* 24 * We split these into 3 chunks in order to work around the 509 character 25 * limit that the standard specifies for string literals 26 */ 27 const char *plaintext[3]; 28 const char *ciphertext[3]; 29 const char *key; 30 const char *iv; 31 const char *seq; 32 } RECORD_DATA; 33 34 /* 35 * Note 1: The plaintext values given here have an additional "16" or "17" byte 36 * added to the end when compared to the official vectors. The official vectors 37 * do not include the inner content type, but we require it. 38 * 39 * Note 2: These are the vectors for the "Simple 1-RTT Handshake" 40 */ 41 static RECORD_DATA refdata[] = { 42 { 43 /* 44 * Server: EncryptedExtensions, Certificate, CertificateVerify and 45 * Finished 46 */ 47 { 48 "080000240022000a00140012001d00170018001901000101010201030104001c" 49 "00024001000000000b0001b9000001b50001b0308201ac30820115a003020102" 50 "020102300d06092a864886f70d01010b0500300e310c300a0603550403130372" 51 "7361301e170d3136303733303031323335395a170d3236303733303031323335" 52 "395a300e310c300a0603550403130372736130819f300d06092a864886f70d01" 53 "0101050003818d0030818902818100b4bb498f8279303d980836399b36c6988c" 54 "0c68de55e1bdb826d3901a2461eafd2de49a91d015abbc9a95137ace6c1af19e", 55 "aa6af98c7ced43120998e187a80ee0ccb0524b1b018c3e0b63264d449a6d38e2" 56 "2a5fda430846748030530ef0461c8ca9d9efbfae8ea6d1d03e2bd193eff0ab9a" 57 "8002c47428a6d35a8d88d79f7f1e3f0203010001a31a301830090603551d1304" 58 "023000300b0603551d0f0404030205a0300d06092a864886f70d01010b050003" 59 "81810085aad2a0e5b9276b908c65f73a7267170618a54c5f8a7b337d2df7a594" 60 "365417f2eae8f8a58c8f8172f9319cf36b7fd6c55b80f21a03015156726096fd" 61 "335e5e67f2dbf102702e608ccae6bec1fc63a42a99be5c3eb7107c3c54e9b9eb", 62 "2bd5203b1c3b84e0a8b2f759409ba3eac9d91d402dcc0cc8f8961229ac9187b4" 63 "2b4de100000f00008408040080754040d0ddab8cf0e2da2bc4995b868ad745c8" 64 "e1564e33cde17880a42392cc624aeef6b67bb3f0ae71d9d54a2309731d87dc59" 65 "f642d733be2eb27484ad8a8c8eb3516a7ac57f2625e2b5c0888a8541f4e734f7" 66 "3d054761df1dd02f0e3e9a33cfa10b6e3eb4ebf7ac053b01fdabbddfc54133bc" 67 "d24c8bbdceb223b2aa03452a2914000020ac86acbc9cd25a45b57ad5b64db15d" 68 "4405cf8c80e314583ebf3283ef9a99310c16" 69 }, 70 { 71 "f10b26d8fcaf67b5b828f712122216a1cd14187465b77637cbcd78539128bb93" 72 "246dcca1af56f1eaa271666077455bc54965d85f05f9bd36d6996171eb536aff" 73 "613eeddc42bad5a2d2227c4606f1215f980e7afaf56bd3b85a51be130003101a" 74 "758d077b1c891d8e7a22947e5a229851fd42a9dd422608f868272abf92b3d43f" 75 "b46ac420259346067f66322fd708885680f4b4433c29116f2dfa529e09bba53c" 76 "7cd920121724809eaddcc84307ef46fc51a0b33d99d39db337fcd761ce0f2b02" 77 "dc73dedb6fddb77c4f8099bde93d5bee08bcf2131f29a2a37ff07949e8f8bcdd", 78 "3e8310b8bf8b3444c85aaf0d2aeb2d4f36fd14d5cb51fcebff418b3827136ab9" 79 "529e9a3d3f35e4c0ae749ea2dbc94982a1281d3e6daab719aa4460889321a008" 80 "bf10fa06ac0c61cc122cc90d5e22c0030c986ae84a33a0c47df174bcfbd50bf7" 81 "8ffdf24051ab423db63d5815db2f830040f30521131c98c66f16c362addce2fb" 82 "a0602cf0a7dddf22e8def7516cdfee95b4056cc9ad38c95352335421b5b1ffba" 83 "df75e5212fdad7a75f52a2801486a1eec3539580bee0e4b337cda6085ac9eccd" 84 "1a0f1a46cebfbb5cdfa3251ac28c3bc826148c6d8c1eb6a06f77f6ff632c6a83", 85 "e283e8f9df7c6dbabf1c6ea40629a85b43ab0c73d34f9d5072832a104eda3f75" 86 "f5d83da6e14822a18e14099d749eafd823ca2ac7542086501eca206ce7887920" 87 "008573757ce2f230a890782b99cc682377beee812756d04f9025135fb599d746" 88 "fefe7316c922ac265ca0d29021375adb63c1509c3e242dfb92b8dee891f7368c" 89 "4058399b8db9075f2dcc8216194e503b6652d87d2cb41f99adfdcc5be5ec7e1e" 90 "6326ac22d70bd3ba652827532d669aff005173597f8039c3ea4922d3ec757670" 91 "222f6ac29b93e90d7ad3f6dd96328e429cfcfd5cca22707fe2d86ad1dcb0be75" 92 "6e8e" 93 }, 94 "c66cb1aec519df44c91e10995511ac8b", 95 "f7f6884c4981716c2d0d29a4", 96 "0000000000000000" 97 }, 98 { 99 /* Client: Finished */ 100 { 101 "14000020b9027a0204b972b52cdefa58950fa1580d68c9cb124dbe691a7178f2" 102 "5c554b2316", "", "" 103 }, 104 { 105 "9539b4ae2f87fd8e616b295628ea953d9e3858db274970d19813ec136cae7d96" 106 "e0417775fcabd3d8858fdc60240912d218f5afb21c", "", "" 107 }, 108 "2679a43e1d76784034ea1797d5ad2649", 109 "5482405290dd0d2f81c0d942", 110 "0000000000000000" 111 }, 112 { 113 /* Server: NewSessionTicket */ 114 { 115 "040000c90000001e2fd3992f02000000b2ff099f9676cdff8b0bf8825d000000" 116 "007905a9d28efeef4a47c6f9b06a0cecdb0070d920b898997c75b79636943ed4" 117 "2046a96142bd084a04acfa0c490f452d756dea02c0f927259f1f3231ac0d541a" 118 "769129b740ce38090842b828c27fd729f59737ba98aa7b42e043c5da28f8dca8" 119 "590b2df410d5134fd6c4cacad8b30370602afa35d265bf4d127976bb36dbda6a" 120 "626f0270e20eebc73d6fcae2b1a0da122ee9042f76be56ebf41aa469c3d2c9da" 121 "9197d80008002a00040000040016", "", "" 122 }, 123 { 124 "3680c2b2109d25caa26c3b06eea9fdc5cb31613ba702176596da2e886bf6af93" 125 "507bd68161ad9cb4780653842e1041ecbf0088a65ac4ef438419dd1d95ddd9bd" 126 "2ad4484e7e167d0e6c008448ae58a0418713b6fc6c51e4bb23a537fb75a74f73" 127 "de31fe6aa0bc522515f8b25f8955428b5de5ac06762cec22b0aa78c94385ef8e" 128 "70fa24945b7c1f268510871689bbbbfaf2e7f4a19277024f95f1143ab12a31ec" 129 "63adb128cb390711fd6d06a498df3e98615d8eb102e23353b480efcca5e8e026" 130 "7a6d0fe2441f14c8c9664aefb2cfff6ae9e0442728b6a0940c1e824fda06", 131 "", "" 132 133 }, 134 "a688ebb5ac826d6f42d45c0cc44b9b7d", 135 "c1cad4425a438b5de714830a", 136 "0000000000000000" 137 }, 138 { 139 /* Client: Application Data */ 140 { 141 "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f" 142 "202122232425262728292a2b2c2d2e2f303117", "", "" 143 }, 144 { 145 "8c3497da00ae023e53c01b4324b665404c1b49e78fe2bf4d17f6348ae8340551" 146 "e363a0cd05f2179c4fef5ad689b5cae0bae94adc63632e571fb79aa91544c639" 147 "4d28a1", "", "" 148 149 }, 150 "88b96ad686c84be55ace18a59cce5c87", 151 "b99dc58cd5ff5ab082fdad19", 152 "0000000000000000" 153 }, 154 155 156 { 157 /* Server: Application Data */ 158 { 159 "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f" 160 "202122232425262728292a2b2c2d2e2f303117", "", "" 161 }, 162 { 163 "f65f49fd2df6cd2347c3d30166e3cfddb6308a5906c076112c6a37ff1dbd406b" 164 "5813c0abd734883017a6b2833186b13c14da5d75f33d8760789994e27d82043a" 165 "b88d65", "", "" 166 }, 167 "a688ebb5ac826d6f42d45c0cc44b9b7d", 168 "c1cad4425a438b5de714830a", 169 "0000000000000001" 170 }, 171 { 172 /* Client: CloseNotify */ 173 { 174 "010015", "", "" 175 }, 176 { 177 "2c2148163d7938a35f6acf2a6606f8cbd1d9f2", "", "" 178 }, 179 "88b96ad686c84be55ace18a59cce5c87", 180 "b99dc58cd5ff5ab082fdad19", 181 "0000000000000001" 182 }, 183 { 184 /* Server: CloseNotify */ 185 { 186 "010015", "", "" 187 }, 188 { 189 "f8141ebdb5eda511e0bce639a56ff9ea825a21", "", "" 190 191 }, 192 "a688ebb5ac826d6f42d45c0cc44b9b7d", 193 "c1cad4425a438b5de714830a", 194 "0000000000000002" 195 } 196 }; 197 198 /* 199 * Same thing as OPENSSL_hexstr2buf() but enables us to pass the string in 200 * 3 chunks 201 */ 202 static unsigned char *multihexstr2buf(const char *str[3], size_t *len) 203 { 204 size_t outer, inner, curr = 0; 205 unsigned char *outbuf; 206 size_t totlen = 0; 207 208 /* Check lengths of all input strings are even */ 209 for (outer = 0; outer < 3; outer++) { 210 totlen += strlen(str[outer]); 211 if ((totlen & 1) != 0) 212 return NULL; 213 } 214 215 totlen /= 2; 216 outbuf = OPENSSL_malloc(totlen); 217 if (outbuf == NULL) 218 return NULL; 219 220 for (outer = 0; outer < 3; outer++) { 221 for (inner = 0; str[outer][inner] != 0; inner += 2) { 222 int hi, lo; 223 224 hi = OPENSSL_hexchar2int(str[outer][inner]); 225 lo = OPENSSL_hexchar2int(str[outer][inner + 1]); 226 227 if (hi < 0 || lo < 0) { 228 OPENSSL_free(outbuf); 229 return NULL; 230 } 231 outbuf[curr++] = (hi << 4) | lo; 232 } 233 } 234 235 *len = totlen; 236 return outbuf; 237 } 238 239 static int load_record(SSL3_RECORD *rec, RECORD_DATA *recd, unsigned char **key, 240 unsigned char *iv, size_t ivlen, unsigned char *seq) 241 { 242 unsigned char *pt = NULL, *sq = NULL, *ivtmp = NULL; 243 size_t ptlen; 244 245 *key = OPENSSL_hexstr2buf(recd->key, NULL); 246 ivtmp = OPENSSL_hexstr2buf(recd->iv, NULL); 247 sq = OPENSSL_hexstr2buf(recd->seq, NULL); 248 pt = multihexstr2buf(recd->plaintext, &ptlen); 249 250 if (*key == NULL || ivtmp == NULL || sq == NULL || pt == NULL) 251 goto err; 252 253 rec->data = rec->input = OPENSSL_malloc(ptlen + EVP_GCM_TLS_TAG_LEN); 254 255 if (rec->data == NULL) 256 goto err; 257 258 rec->length = ptlen; 259 memcpy(rec->data, pt, ptlen); 260 OPENSSL_free(pt); 261 memcpy(seq, sq, SEQ_NUM_SIZE); 262 OPENSSL_free(sq); 263 memcpy(iv, ivtmp, ivlen); 264 OPENSSL_free(ivtmp); 265 266 return 1; 267 err: 268 OPENSSL_free(*key); 269 *key = NULL; 270 OPENSSL_free(ivtmp); 271 OPENSSL_free(sq); 272 OPENSSL_free(pt); 273 return 0; 274 } 275 276 static int test_record(SSL3_RECORD *rec, RECORD_DATA *recd, int enc) 277 { 278 int ret = 0; 279 unsigned char *refd; 280 size_t refdatalen = 0; 281 282 if (enc) 283 refd = multihexstr2buf(recd->ciphertext, &refdatalen); 284 else 285 refd = multihexstr2buf(recd->plaintext, &refdatalen); 286 287 if (!TEST_ptr(refd)) { 288 TEST_info("Failed to get reference data"); 289 goto err; 290 } 291 292 if (!TEST_mem_eq(rec->data, rec->length, refd, refdatalen)) 293 goto err; 294 295 ret = 1; 296 297 err: 298 OPENSSL_free(refd); 299 return ret; 300 } 301 302 #define TLS13_AES_128_GCM_SHA256_BYTES ((const unsigned char *)"\x13\x01") 303 304 static int test_tls13_encryption(void) 305 { 306 SSL_CTX *ctx = NULL; 307 SSL *s = NULL; 308 SSL3_RECORD rec; 309 unsigned char *key = NULL, *iv = NULL, *seq = NULL; 310 const EVP_CIPHER *ciph = EVP_aes_128_gcm(); 311 int ret = 0; 312 size_t ivlen, ctr; 313 314 /* 315 * Encrypted TLSv1.3 records always have an outer content type of 316 * application data, and a record version of TLSv1.2. 317 */ 318 rec.data = NULL; 319 rec.type = SSL3_RT_APPLICATION_DATA; 320 rec.rec_version = TLS1_2_VERSION; 321 322 ctx = SSL_CTX_new(TLS_method()); 323 if (!TEST_ptr(ctx)) { 324 TEST_info("Failed creating SSL_CTX"); 325 goto err; 326 } 327 328 s = SSL_new(ctx); 329 if (!TEST_ptr(s)) { 330 TEST_info("Failed creating SSL"); 331 goto err; 332 } 333 334 s->enc_read_ctx = EVP_CIPHER_CTX_new(); 335 if (!TEST_ptr(s->enc_read_ctx)) 336 goto err; 337 338 s->enc_write_ctx = EVP_CIPHER_CTX_new(); 339 if (!TEST_ptr(s->enc_write_ctx)) 340 goto err; 341 342 s->s3.tmp.new_cipher = SSL_CIPHER_find(s, TLS13_AES_128_GCM_SHA256_BYTES); 343 if (!TEST_ptr(s->s3.tmp.new_cipher)) { 344 TEST_info("Failed to find cipher"); 345 goto err; 346 } 347 348 for (ctr = 0; ctr < OSSL_NELEM(refdata); ctr++) { 349 /* Load the record */ 350 ivlen = EVP_CIPHER_get_iv_length(ciph); 351 if (!load_record(&rec, &refdata[ctr], &key, s->read_iv, ivlen, 352 RECORD_LAYER_get_read_sequence(&s->rlayer))) { 353 TEST_error("Failed loading key into EVP_CIPHER_CTX"); 354 goto err; 355 } 356 357 /* Set up the read/write sequences */ 358 memcpy(RECORD_LAYER_get_write_sequence(&s->rlayer), 359 RECORD_LAYER_get_read_sequence(&s->rlayer), SEQ_NUM_SIZE); 360 memcpy(s->write_iv, s->read_iv, ivlen); 361 362 /* Load the key into the EVP_CIPHER_CTXs */ 363 if (EVP_CipherInit_ex(s->enc_write_ctx, ciph, NULL, key, NULL, 1) <= 0 364 || EVP_CipherInit_ex(s->enc_read_ctx, ciph, NULL, key, NULL, 0) 365 <= 0) { 366 TEST_error("Failed loading key into EVP_CIPHER_CTX\n"); 367 goto err; 368 } 369 370 /* Encrypt it */ 371 if (!TEST_size_t_eq(tls13_enc(s, &rec, 1, 1, NULL, 0), 1)) { 372 TEST_info("Failed to encrypt record %zu", ctr); 373 goto err; 374 } 375 if (!TEST_true(test_record(&rec, &refdata[ctr], 1))) { 376 TEST_info("Record %zu encryption test failed", ctr); 377 goto err; 378 } 379 380 /* Decrypt it */ 381 if (!TEST_int_eq(tls13_enc(s, &rec, 1, 0, NULL, 0), 1)) { 382 TEST_info("Failed to decrypt record %zu", ctr); 383 goto err; 384 } 385 if (!TEST_true(test_record(&rec, &refdata[ctr], 0))) { 386 TEST_info("Record %zu decryption test failed", ctr); 387 goto err; 388 } 389 390 OPENSSL_free(rec.data); 391 OPENSSL_free(key); 392 OPENSSL_free(iv); 393 OPENSSL_free(seq); 394 rec.data = NULL; 395 key = NULL; 396 iv = NULL; 397 seq = NULL; 398 } 399 400 TEST_note("PASS: %zu records tested", ctr); 401 ret = 1; 402 403 err: 404 OPENSSL_free(rec.data); 405 OPENSSL_free(key); 406 OPENSSL_free(iv); 407 OPENSSL_free(seq); 408 SSL_free(s); 409 SSL_CTX_free(ctx); 410 return ret; 411 } 412 413 int setup_tests(void) 414 { 415 ADD_TEST(test_tls13_encryption); 416 return 1; 417 } 418