test/tls13encryptiontest.c

   1 /*
   2  * Copyright 2016-2018 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;
 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_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), 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), 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 }