test/tls13encryptiontest.c

   1 /*
   2  * Copyright 2016-2018 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
  13 #ifdef __VMS
  14 # pragma names save
  15 # pragma names as_is,shortened
  16 #endif
  17
  18 #include "../ssl/ssl_locl.h"
  19 #include "../ssl/record/record_locl.h"
  20
  21 #ifdef __VMS
  22 # pragma names restore
  23 #endif
  24
  25 #include "internal/nelem.h"
  26 #include "testutil.h"
  27
  28 /*
  29  * Based on the test vectors provided in:
  30  * https://tools.ietf.org/html/draft-ietf-tls-tls13-vectors-06
  31  */
  32
  33 typedef struct {
  34     /*
  35      * We split these into 3 chunks in order to work around the 509 character
  36      * limit that the standard specifies for string literals
  37      */
  38     const char *plaintext[3];
  39     const char *ciphertext[3];
  40     const char *key;
  41     const char *iv;
  42     const char *seq;
  43 } RECORD_DATA;
  44
  45 /*
  46  * Note 1: The plaintext values given here have an additional "16" or "17" byte
  47  * added to the end when compared to the official vectors. The official vectors
  48  * do not include the inner content type, but we require it.
  49  *
  50  * Note 2: These are the vectors for the "Simple 1-RTT Handshake"
  51  */
  52 static RECORD_DATA refdata[] = {
  53     {
  54         /*
  55          * Server: EncryptedExtensions, Certificate, CertificateVerify and
  56          *         Finished
  57          */
  58         {
  59             "080000240022000a00140012001d00170018001901000101010201030104001c"
  60             "00024001000000000b0001b9000001b50001b0308201ac30820115a003020102"
  61             "020102300d06092a864886f70d01010b0500300e310c300a0603550403130372"
  62             "7361301e170d3136303733303031323335395a170d3236303733303031323335"
  63             "395a300e310c300a0603550403130372736130819f300d06092a864886f70d01"
  64             "0101050003818d0030818902818100b4bb498f8279303d980836399b36c6988c"
  65             "0c68de55e1bdb826d3901a2461eafd2de49a91d015abbc9a95137ace6c1af19e",
  66             "aa6af98c7ced43120998e187a80ee0ccb0524b1b018c3e0b63264d449a6d38e2"
  67             "2a5fda430846748030530ef0461c8ca9d9efbfae8ea6d1d03e2bd193eff0ab9a"
  68             "8002c47428a6d35a8d88d79f7f1e3f0203010001a31a301830090603551d1304"
  69             "023000300b0603551d0f0404030205a0300d06092a864886f70d01010b050003"
  70             "81810085aad2a0e5b9276b908c65f73a7267170618a54c5f8a7b337d2df7a594"
  71             "365417f2eae8f8a58c8f8172f9319cf36b7fd6c55b80f21a03015156726096fd"
  72             "335e5e67f2dbf102702e608ccae6bec1fc63a42a99be5c3eb7107c3c54e9b9eb",
  73             "2bd5203b1c3b84e0a8b2f759409ba3eac9d91d402dcc0cc8f8961229ac9187b4"
  74             "2b4de100000f00008408040080754040d0ddab8cf0e2da2bc4995b868ad745c8"
  75             "e1564e33cde17880a42392cc624aeef6b67bb3f0ae71d9d54a2309731d87dc59"
  76             "f642d733be2eb27484ad8a8c8eb3516a7ac57f2625e2b5c0888a8541f4e734f7"
  77             "3d054761df1dd02f0e3e9a33cfa10b6e3eb4ebf7ac053b01fdabbddfc54133bc"
  78             "d24c8bbdceb223b2aa03452a2914000020ac86acbc9cd25a45b57ad5b64db15d"
  79             "4405cf8c80e314583ebf3283ef9a99310c16"
  80         },
  81         {
  82             "f10b26d8fcaf67b5b828f712122216a1cd14187465b77637cbcd78539128bb93"
  83             "246dcca1af56f1eaa271666077455bc54965d85f05f9bd36d6996171eb536aff"
  84             "613eeddc42bad5a2d2227c4606f1215f980e7afaf56bd3b85a51be130003101a"
  85             "758d077b1c891d8e7a22947e5a229851fd42a9dd422608f868272abf92b3d43f"
  86             "b46ac420259346067f66322fd708885680f4b4433c29116f2dfa529e09bba53c"
  87             "7cd920121724809eaddcc84307ef46fc51a0b33d99d39db337fcd761ce0f2b02"
  88             "dc73dedb6fddb77c4f8099bde93d5bee08bcf2131f29a2a37ff07949e8f8bcdd",
  89             "3e8310b8bf8b3444c85aaf0d2aeb2d4f36fd14d5cb51fcebff418b3827136ab9"
  90             "529e9a3d3f35e4c0ae749ea2dbc94982a1281d3e6daab719aa4460889321a008"
  91             "bf10fa06ac0c61cc122cc90d5e22c0030c986ae84a33a0c47df174bcfbd50bf7"
  92             "8ffdf24051ab423db63d5815db2f830040f30521131c98c66f16c362addce2fb"
  93             "a0602cf0a7dddf22e8def7516cdfee95b4056cc9ad38c95352335421b5b1ffba"
  94             "df75e5212fdad7a75f52a2801486a1eec3539580bee0e4b337cda6085ac9eccd"
  95             "1a0f1a46cebfbb5cdfa3251ac28c3bc826148c6d8c1eb6a06f77f6ff632c6a83",
  96             "e283e8f9df7c6dbabf1c6ea40629a85b43ab0c73d34f9d5072832a104eda3f75"
  97             "f5d83da6e14822a18e14099d749eafd823ca2ac7542086501eca206ce7887920"
  98             "008573757ce2f230a890782b99cc682377beee812756d04f9025135fb599d746"
  99             "fefe7316c922ac265ca0d29021375adb63c1509c3e242dfb92b8dee891f7368c"
 100             "4058399b8db9075f2dcc8216194e503b6652d87d2cb41f99adfdcc5be5ec7e1e"
 101             "6326ac22d70bd3ba652827532d669aff005173597f8039c3ea4922d3ec757670"
 102             "222f6ac29b93e90d7ad3f6dd96328e429cfcfd5cca22707fe2d86ad1dcb0be75"
 103             "6e8e"
 104         },
 105         "c66cb1aec519df44c91e10995511ac8b",
 106         "f7f6884c4981716c2d0d29a4",
 107         "0000000000000000"
 108     },
 109     {
 110         /* Client: Finished */
 111         {
 112             "14000020b9027a0204b972b52cdefa58950fa1580d68c9cb124dbe691a7178f2"
 113             "5c554b2316", "", ""
 114         },
 115         {
 116             "9539b4ae2f87fd8e616b295628ea953d9e3858db274970d19813ec136cae7d96"
 117             "e0417775fcabd3d8858fdc60240912d218f5afb21c", "", ""
 118         },
 119         "2679a43e1d76784034ea1797d5ad2649",
 120         "5482405290dd0d2f81c0d942",
 121         "0000000000000000"
 122     },
 123     {
 124         /* Server: NewSessionTicket */
 125         {
 126             "040000c90000001e2fd3992f02000000b2ff099f9676cdff8b0bf8825d000000"
 127             "007905a9d28efeef4a47c6f9b06a0cecdb0070d920b898997c75b79636943ed4"
 128             "2046a96142bd084a04acfa0c490f452d756dea02c0f927259f1f3231ac0d541a"
 129             "769129b740ce38090842b828c27fd729f59737ba98aa7b42e043c5da28f8dca8"
 130             "590b2df410d5134fd6c4cacad8b30370602afa35d265bf4d127976bb36dbda6a"
 131             "626f0270e20eebc73d6fcae2b1a0da122ee9042f76be56ebf41aa469c3d2c9da"
 132             "9197d80008002a00040000040016", "", ""
 133         },
 134         {
 135             "3680c2b2109d25caa26c3b06eea9fdc5cb31613ba702176596da2e886bf6af93"
 136             "507bd68161ad9cb4780653842e1041ecbf0088a65ac4ef438419dd1d95ddd9bd"
 137             "2ad4484e7e167d0e6c008448ae58a0418713b6fc6c51e4bb23a537fb75a74f73"
 138             "de31fe6aa0bc522515f8b25f8955428b5de5ac06762cec22b0aa78c94385ef8e"
 139             "70fa24945b7c1f268510871689bbbbfaf2e7f4a19277024f95f1143ab12a31ec"
 140             "63adb128cb390711fd6d06a498df3e98615d8eb102e23353b480efcca5e8e026"
 141             "7a6d0fe2441f14c8c9664aefb2cfff6ae9e0442728b6a0940c1e824fda06",
 142             "", ""
 143
 144         },
 145         "a688ebb5ac826d6f42d45c0cc44b9b7d",
 146         "c1cad4425a438b5de714830a",
 147         "0000000000000000"
 148     },
 149     {
 150         /* Client: Application Data */
 151         {
 152             "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
 153             "202122232425262728292a2b2c2d2e2f303117", "", ""
 154         },
 155         {
 156             "8c3497da00ae023e53c01b4324b665404c1b49e78fe2bf4d17f6348ae8340551"
 157             "e363a0cd05f2179c4fef5ad689b5cae0bae94adc63632e571fb79aa91544c639"
 158             "4d28a1", "", ""
 159
 160         },
 161         "88b96ad686c84be55ace18a59cce5c87",
 162         "b99dc58cd5ff5ab082fdad19",
 163         "0000000000000000"
 164     },
 165
 166
 167     {
 168         /* Server: Application Data */
 169         {
 170             "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
 171             "202122232425262728292a2b2c2d2e2f303117", "", ""
 172         },
 173         {
 174             "f65f49fd2df6cd2347c3d30166e3cfddb6308a5906c076112c6a37ff1dbd406b"
 175             "5813c0abd734883017a6b2833186b13c14da5d75f33d8760789994e27d82043a"
 176             "b88d65", "", ""
 177         },
 178         "a688ebb5ac826d6f42d45c0cc44b9b7d",
 179         "c1cad4425a438b5de714830a",
 180         "0000000000000001"
 181     },
 182     {
 183         /* Client: CloseNotify */
 184         {
 185             "010015", "", ""
 186         },
 187         {
 188             "2c2148163d7938a35f6acf2a6606f8cbd1d9f2", "", ""
 189         },
 190         "88b96ad686c84be55ace18a59cce5c87",
 191         "b99dc58cd5ff5ab082fdad19",
 192         "0000000000000001"
 193     },
 194     {
 195         /* Server: CloseNotify */
 196         {
 197             "010015", "", ""
 198         },
 199         {
 200             "f8141ebdb5eda511e0bce639a56ff9ea825a21", "", ""
 201
 202         },
 203         "a688ebb5ac826d6f42d45c0cc44b9b7d",
 204         "c1cad4425a438b5de714830a",
 205         "0000000000000002"
 206     }
 207 };
 208
 209 /*
 210  * Same thing as OPENSSL_hexstr2buf() but enables us to pass the string in
 211  * 3 chunks
 212  */
 213 static unsigned char *multihexstr2buf(const char *str[3], size_t *len)
 214 {
 215     size_t outer, inner, curr = 0;
 216     unsigned char *outbuf;
 217     size_t totlen = 0;
 218
 219     /* Check lengths of all input strings are even */
 220     for (outer = 0; outer < 3; outer++) {
 221         totlen += strlen(str[outer]);
 222         if ((totlen & 1) != 0)
 223             return NULL;
 224     }
 225
 226     totlen /= 2;
 227     outbuf = OPENSSL_malloc(totlen);
 228     if (outbuf == NULL)
 229         return NULL;
 230
 231     for (outer = 0; outer < 3; outer++) {
 232         for (inner = 0; str[outer][inner] != 0; inner += 2) {
 233             int hi, lo;
 234
 235             hi = OPENSSL_hexchar2int(str[outer][inner]);
 236             lo = OPENSSL_hexchar2int(str[outer][inner + 1]);
 237
 238             if (hi < 0 || lo < 0) {
 239                 OPENSSL_free(outbuf);
 240                 return NULL;
 241             }
 242             outbuf[curr++] = (hi << 4) | lo;
 243         }
 244     }
 245
 246     *len = totlen;
 247     return outbuf;
 248 }
 249
 250 static int load_record(SSL3_RECORD *rec, RECORD_DATA *recd, unsigned char **key,
 251                        unsigned char *iv, size_t ivlen, unsigned char *seq)
 252 {
 253     unsigned char *pt = NULL, *sq = NULL, *ivtmp = NULL;
 254     size_t ptlen;
 255
 256     *key = OPENSSL_hexstr2buf(recd->key, NULL);
 257     ivtmp = OPENSSL_hexstr2buf(recd->iv, NULL);
 258     sq = OPENSSL_hexstr2buf(recd->seq, NULL);
 259     pt = multihexstr2buf(recd->plaintext, &ptlen);
 260
 261     if (*key == NULL || ivtmp == NULL || sq == NULL || pt == NULL)
 262         goto err;
 263
 264     rec->data = rec->input = OPENSSL_malloc(ptlen + EVP_GCM_TLS_TAG_LEN);
 265
 266     if (rec->data == NULL)
 267         goto err;
 268
 269     rec->length = ptlen;
 270     memcpy(rec->data, pt, ptlen);
 271     OPENSSL_free(pt);
 272     memcpy(seq, sq, SEQ_NUM_SIZE);
 273     OPENSSL_free(sq);
 274     memcpy(iv, ivtmp, ivlen);
 275     OPENSSL_free(ivtmp);
 276
 277     return 1;
 278  err:
 279     OPENSSL_free(*key);
 280     *key = NULL;
 281     OPENSSL_free(ivtmp);
 282     OPENSSL_free(sq);
 283     OPENSSL_free(pt);
 284     return 0;
 285 }
 286
 287 static int test_record(SSL3_RECORD *rec, RECORD_DATA *recd, int enc)
 288 {
 289     int ret = 0;
 290     unsigned char *refd;
 291     size_t refdatalen;
 292
 293     if (enc)
 294         refd = multihexstr2buf(recd->ciphertext, &refdatalen);
 295     else
 296         refd = multihexstr2buf(recd->plaintext, &refdatalen);
 297
 298     if (!TEST_ptr(refd)) {
 299         TEST_info("Failed to get reference data");
 300         goto err;
 301     }
 302
 303     if (!TEST_mem_eq(rec->data, rec->length, refd, refdatalen))
 304         goto err;
 305
 306     ret = 1;
 307
 308  err:
 309     OPENSSL_free(refd);
 310     return ret;
 311 }
 312
 313 #define TLS13_AES_128_GCM_SHA256_BYTES  ((const unsigned char *)"\x13\x01")
 314
 315 static int test_tls13_encryption(void)
 316 {
 317     SSL_CTX *ctx = NULL;
 318     SSL *s = NULL;
 319     SSL3_RECORD rec;
 320     unsigned char *key = NULL, *iv = NULL, *seq = NULL;
 321     const EVP_CIPHER *ciph = EVP_aes_128_gcm();
 322     int ret = 0;
 323     size_t ivlen, ctr;
 324
 325     /*
 326      * Encrypted TLSv1.3 records always have an outer content type of
 327      * application data, and a record version of TLSv1.2.
 328      */
 329     rec.data = NULL;
 330     rec.type = SSL3_RT_APPLICATION_DATA;
 331     rec.rec_version = TLS1_2_VERSION;
 332
 333     ctx = SSL_CTX_new(TLS_method());
 334     if (!TEST_ptr(ctx)) {
 335         TEST_info("Failed creating SSL_CTX");
 336         goto err;
 337     }
 338
 339     s = SSL_new(ctx);
 340     if (!TEST_ptr(s)) {
 341         TEST_info("Failed creating SSL");
 342         goto err;
 343     }
 344
 345     s->enc_read_ctx = EVP_CIPHER_CTX_new();
 346     if (!TEST_ptr(s->enc_read_ctx))
 347         goto err;
 348
 349     s->enc_write_ctx = EVP_CIPHER_CTX_new();
 350     if (!TEST_ptr(s->enc_write_ctx))
 351         goto err;
 352
 353     s->s3->tmp.new_cipher = SSL_CIPHER_find(s, TLS13_AES_128_GCM_SHA256_BYTES);
 354     if (!TEST_ptr(s->s3->tmp.new_cipher)) {
 355         TEST_info("Failed to find cipher");
 356         goto err;
 357     }
 358
 359     for (ctr = 0; ctr < OSSL_NELEM(refdata); ctr++) {
 360         /* Load the record */
 361         ivlen = EVP_CIPHER_iv_length(ciph);
 362         if (!load_record(&rec, &refdata[ctr], &key, s->read_iv, ivlen,
 363                          RECORD_LAYER_get_read_sequence(&s->rlayer))) {
 364             TEST_error("Failed loading key into EVP_CIPHER_CTX");
 365             goto err;
 366         }
 367
 368         /* Set up the read/write sequences */
 369         memcpy(RECORD_LAYER_get_write_sequence(&s->rlayer),
 370                RECORD_LAYER_get_read_sequence(&s->rlayer), SEQ_NUM_SIZE);
 371         memcpy(s->write_iv, s->read_iv, ivlen);
 372
 373         /* Load the key into the EVP_CIPHER_CTXs */
 374         if (EVP_CipherInit_ex(s->enc_write_ctx, ciph, NULL, key, NULL, 1) <= 0
 375                 || EVP_CipherInit_ex(s->enc_read_ctx, ciph, NULL, key, NULL, 0)
 376                    <= 0) {
 377             TEST_error("Failed loading key into EVP_CIPHER_CTX\n");
 378             goto err;
 379         }
 380
 381         /* Encrypt it */
 382         if (!TEST_size_t_eq(tls13_enc(s, &rec, 1, 1), 1)) {
 383             TEST_info("Failed to encrypt record %zu", ctr);
 384             goto err;
 385         }
 386         if (!TEST_true(test_record(&rec, &refdata[ctr], 1))) {
 387             TEST_info("Record %zu encryption test failed", ctr);
 388             goto err;
 389         }
 390
 391         /* Decrypt it */
 392         if (!TEST_int_eq(tls13_enc(s, &rec, 1, 0), 1)) {
 393             TEST_info("Failed to decrypt record %zu", ctr);
 394             goto err;
 395         }
 396         if (!TEST_true(test_record(&rec, &refdata[ctr], 0))) {
 397             TEST_info("Record %zu decryption test failed", ctr);
 398             goto err;
 399         }
 400
 401         OPENSSL_free(rec.data);
 402         OPENSSL_free(key);
 403         OPENSSL_free(iv);
 404         OPENSSL_free(seq);
 405         rec.data = NULL;
 406         key = NULL;
 407         iv = NULL;
 408         seq = NULL;
 409     }
 410
 411     TEST_note("PASS: %zu records tested", ctr);
 412     ret = 1;
 413
 414  err:
 415     OPENSSL_free(rec.data);
 416     OPENSSL_free(key);
 417     OPENSSL_free(iv);
 418     OPENSSL_free(seq);
 419     SSL_free(s);
 420     SSL_CTX_free(ctx);
 421     return ret;
 422 }
 423
 424 int setup_tests(void)
 425 {
 426     ADD_TEST(test_tls13_encryption);
 427     return 1;
 428 }