test/tls13encryptiontest.c

   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 #include "../ssl/record/record_locl.h"
  14
  15 #include "testutil.h"
  16 #include "test_main.h"
  17
  18 /*
  19  * Based on the test vectors provided in:
  20  * https://www.ietf.org/id/draft-thomson-tls-tls13-vectors-01.txt
  21  */
  22
  23 typedef struct {
  24     /*
  25      * We split these into 3 chunks in order to work around the 509 character
  26      * limit that the standard specifies for string literals
  27      */
  28     const char *plaintext[3];
  29     const char *ciphertext[3];
  30     const char *key;
  31     const char *iv;
  32     const char *seq;
  33 } RECORD_DATA;
  34
  35 static RECORD_DATA refdata[] = {
  36     {
  37         /*
  38          * Server: EncryptedExtensions, Certificate, CertificateVerify and
  39          *         Finished
  40          */
  41         {
  42             "0800001e001c000a00140012001d001700180019010001010102010301040000"
  43             "00000b0001b9000001b50001b0308201ac30820115a003020102020102300d06"
  44             "092a864886f70d01010b0500300e310c300a06035504031303727361301e170d"
  45             "3136303733303031323335395a170d3236303733303031323335395a300e310c"
  46             "300a0603550403130372736130819f300d06092a864886f70d01010105000381"
  47             "8d0030818902818100b4bb498f8279303d980836399b36c6988c0c68de55e1bd"
  48             "b826d3901a2461eafd2de49a91d015abbc9a95137ace6c1af19eaa6af98c7ced",
  49             "43120998e187a80ee0ccb0524b1b018c3e0b63264d449a6d38e22a5fda430846"
  50             "748030530ef0461c8ca9d9efbfae8ea6d1d03e2bd193eff0ab9a8002c47428a6"
  51             "d35a8d88d79f7f1e3f0203010001a31a301830090603551d1304023000300b06"
  52             "03551d0f0404030205a0300d06092a864886f70d01010b05000381810085aad2"
  53             "a0e5b9276b908c65f73a7267170618a54c5f8a7b337d2df7a594365417f2eae8"
  54             "f8a58c8f8172f9319cf36b7fd6c55b80f21a03015156726096fd335e5e67f2db"
  55             "f102702e608ccae6bec1fc63a42a99be5c3eb7107c3c54e9b9eb2bd5203b1c3b",
  56             "84e0a8b2f759409ba3eac9d91d402dcc0cc8f8961229ac9187b42b4de100000f"
  57             "00008408040080134e22eac57321ab47db6b38b2992cec2dd79bd065a034a9af"
  58             "6b9e3d03475e4309e6523ccdf055453fb480804a3a7e996229eb28e734f6702b"
  59             "ea2b32149899ac043a4b44468197868da77147ce9f73c0543c4e3fc33e306cac"
  60             "8506faa80a959c5f1edccbee76eda1ad7a4fa440de35dcb87e82ec94e8725355"
  61             "ce7507713a609e140000207304bb73321f01b71dd94622fae98daf634490d220"
  62             "e4c8f3ffa2559911a56e5116"
  63         },
  64         {
  65             "40ae92071a3a548b26af31e116dfc0ba4549210b17e70da16cfbda9ccdad844d"
  66             "94264a9ae65b786b3eaf0de20aa89c6babb448b6f32d07f233584296eefe1931"
  67             "6bd979659472ee8567cb01d70b0366cddb3c60eb9e1d789a3691dc254c14de73"
  68             "f4f20100504544ce184d44547e124b1f18303b4859f8f2e2b04423d23a866b43"
  69             "866374d54af41649d25f4a3ec2cecd5d4e6de1b24953440b46fbb74c1dbec6fb"
  70             "b1f16bc21d4aa0e1e936a49c07127e19719bc652a2f0b7f8df4a150b2b3c9e9e"
  71             "353d6ed101970ddc611abad0632c6793f9379c9d06846c311fcbd6f85edd569b",
  72             "8782c4c5f62294c4611ae60f83230a53aa95e3bcbed204f19a7a1db83c0fbfec"
  73             "1edd2c17498fa7b5aa2321248a92592d891e4947df6bcef52f4481797d032ad3"
  74             "32046a384abece6454b3e356d7249bfa5696793c7f7d3048dc87fa7409a46918"
  75             "87caaf0982c402b902d699f62dc4d5e153f13e8589e4a6206c7f74eb26ddefbb"
  76             "92309fb753decfea972dec7de02eda9c6d26acd7be53a8aa20f1a93f082ae6eb"
  77             "927a6a1b7bd9153551aedfaf94f61dd4cb9355ad7ab09f615d9f92c21712c732"
  78             "c0e7e117797f38cbdc184e3a65e15a89f46cb3624f5fdb8dbbd275f2c8492f8d",
  79             "95bdbd8d1dc1b9f21107bd433acbbac247239c073a2f24a4a9f8074f325f277d"
  80             "579b6bff0269ff19aed3809a9ddd21dd29c1363c9dc44812dd41d2111f9c2e83"
  81             "42046c14133b853262676f15e94de18660e04ae5c0c661ea43559af5842e161c"
  82             "83dd29f64508b2ec3e635a2134fc0e1a39d3ecb51dcddfcf8382c88ffe2a7378"
  83             "42ad1de7fe505b6c4d1673870f6fc2a0f2f7972acaee368a1599d64ba18798f1"
  84             "0333f9779bd5b05f9b084d03dab2f3d80c2eb74ec70c9866ea31c18b491cd597"
  85             "aae3e941205fcc38a3a10ce8c0269f02ccc9c51278e25f1a0f0731a9"
  86         },
  87         "d2dd45f87ad87801a85ac38187f9023b",
  88         "f0a14f808692cef87a3daf70",
  89         "0000000000000000"
  90     },
  91     {
  92         /* Client: Finished */
  93         {
  94             "1400002078367856d3c8cc4e0a95eb98906ca7a48bd3cc7029f48bd4ae0dc91a"
  95             "b903ca8916","",""
  96         },
  97         {
  98             "fa15e92daa21cd05d8f9c3152a61748d9aaf049da559718e583f95aacecad657"
  99             "b52a6562da09a5819e864d86ac2989360a1eb22795","",""
 100         },
 101         "40e1201d75d419627f04c88530a15c9d",
 102         "a0f073f3b35e18f96969696b",
 103         "0000000000000000"
 104     },
 105     {
 106         /* Server: NewSessionTicket */
 107         {
 108             "040000a60002a3004abe594b00924e535321cadc96238da09caf9b02fecafdd6"
 109             "5e3e418f03e43772cf512ed8066100503b1c08abbbf298a9d138ce821dd12fe1"
 110             "710e2137cd12e6a85cd3fd7f73706e7f5dddefb87c1ef83824638464099c9d13"
 111             "63e3c64ed2075c16b8ccd8e524a6bbd7a6a6e34ea1579782b15bbe7dfed5c0c0"
 112             "d980fb330f9d8ab252ffe7be1277d418b6828ead4dae3b30d448442417ef76af"
 113             "0008002e00040002000016","",""
 114         },
 115         {
 116             "45a6626fa13b66ce2c5b3ef807e299a118296f26a2dd9ec7487a0673e2460d4c"
 117             "79f40087dcd014c59c51379c90d26b4e4f9bb2b78f5b6761594f013ff3e4c78d"
 118             "836905229eac811c4ef8b2faa89867e9ffc586f7f03c216591aa5e620eac3c62"
 119             "dfe60f846036bd7ecc4464b584af184e9644e94ee1d7834dba408a51cbe42480"
 120             "04796ed9c558e0f5f96115a6f6ba487e17d16a2e20a3d3a650a9a070fb53d9da"
 121             "82864b5621d77650bd0c7947e9889917b53d0515627c72b0ded521","",""
 122         },
 123         "3381f6b3f94500f16226de440193e858",
 124         "4f1d73cc1d465eb30021c41f",
 125         "0000000000000000"
 126     },
 127     {
 128         /* Client: Application Data */
 129         {
 130             "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
 131             "202122232425262728292a2b2c2d2e2f303117","",""
 132         },
 133         {
 134             "e306178ad97f74bb64f35eaf3c39846b83aef8472cbc9046749b81a949dfb12c"
 135             "fbc65cbabd20ade92c1f944605892ceeb12fdee8a927bce77c83036ac5a794a8"
 136             "f54a69","",""
 137         },
 138         "eb23a804904b80ba4fe8399e09b1ce42",
 139         "efa8c50c06b9c9b8c483e174",
 140         "0000000000000000"
 141     },
 142     {
 143         /* Server: Application Data */
 144         {
 145             "000102030405060708090a0b0c0d0e0f101112131415161718191a1b1c1d1e1f"
 146             "202122232425262728292a2b2c2d2e2f303117","",""
 147         },
 148         {
 149             "467d99a807dbf778e6ffd8be52456c70665f890811ef2f3c495d5bbe983feeda"
 150             "b0c251dde596bc7e2b135909ec9f9166fb0152e8c16a84e4b1039256467f9538"
 151             "be4463","",""
 152         },
 153         "3381f6b3f94500f16226de440193e858",
 154         "4f1d73cc1d465eb30021c41f",
 155         "0000000000000001"
 156     },
 157     {
 158         /* Client: CloseNotify */
 159         {
 160             "010015","",""
 161         },
 162         {
 163             "6bdf60847ba6fb650da36e872adc684a4af2e8","",""
 164         },
 165         "eb23a804904b80ba4fe8399e09b1ce42",
 166         "efa8c50c06b9c9b8c483e174",
 167         "0000000000000001"
 168     },
 169     {
 170         /* Server: CloseNotify */
 171         {
 172             "010015","",""
 173         },
 174         {
 175             "621b7cc1962cd8a70109fee68a52efedf87d2e","",""
 176         },
 177         "3381f6b3f94500f16226de440193e858",
 178         "4f1d73cc1d465eb30021c41f",
 179         "0000000000000002"
 180     }
 181 };
 182
 183 /*
 184  * Same thing as OPENSSL_hexstr2buf() but enables us to pass the string in
 185  * 3 chunks
 186  */
 187 static unsigned char *multihexstr2buf(const char *str[3], size_t *len)
 188 {
 189     size_t outer, inner, curr = 0;
 190     unsigned char *outbuf;
 191     size_t totlen = 0;
 192
 193     /* Check lengths of all input strings are even */
 194     for (outer = 0; outer < 3; outer++) {
 195         totlen += strlen(str[outer]);
 196         if ((totlen & 1) != 0)
 197             return NULL;
 198     }
 199
 200     totlen /= 2;
 201     outbuf = OPENSSL_malloc(totlen);
 202     if (outbuf == NULL)
 203         return NULL;
 204
 205     for (outer = 0; outer < 3; outer++) {
 206         for (inner = 0; str[outer][inner] != 0; inner += 2) {
 207             int hi, lo;
 208
 209             hi = OPENSSL_hexchar2int(str[outer][inner]);
 210             lo = OPENSSL_hexchar2int(str[outer][inner + 1]);
 211
 212             if (hi < 0 || lo < 0) {
 213                 OPENSSL_free(outbuf);
 214                 return NULL;
 215             }
 216             outbuf[curr++] = (hi << 4) | lo;
 217         }
 218     }
 219
 220     *len = totlen;
 221     return outbuf;
 222 }
 223
 224 static int load_record(SSL3_RECORD *rec, RECORD_DATA *recd, unsigned char **key,
 225                        unsigned char *iv, size_t ivlen, unsigned char *seq)
 226 {
 227     unsigned char *pt = NULL, *sq = NULL, *ivtmp = NULL;
 228     size_t ptlen;
 229
 230     *key = OPENSSL_hexstr2buf(recd->key, NULL);
 231     ivtmp = OPENSSL_hexstr2buf(recd->iv, NULL);
 232     sq = OPENSSL_hexstr2buf(recd->seq, NULL);
 233     pt = multihexstr2buf(recd->plaintext, &ptlen);
 234
 235     if (*key == NULL || ivtmp == NULL || sq == NULL || pt == NULL)
 236         goto err;
 237
 238     rec->data = rec->input = OPENSSL_malloc(ptlen + EVP_GCM_TLS_TAG_LEN);
 239
 240     if (rec->data == NULL)
 241         goto err;
 242
 243     rec->length = ptlen;
 244     memcpy(rec->data, pt, ptlen);
 245     OPENSSL_free(pt);
 246     memcpy(seq, sq, SEQ_NUM_SIZE);
 247     OPENSSL_free(sq);
 248     memcpy(iv, ivtmp, ivlen);
 249     OPENSSL_free(ivtmp);
 250
 251     return 1;
 252  err:
 253     OPENSSL_free(*key);
 254     *key = NULL;
 255     OPENSSL_free(ivtmp);
 256     OPENSSL_free(sq);
 257     OPENSSL_free(pt);
 258     return 0;
 259 }
 260
 261 static int test_record(SSL3_RECORD *rec, RECORD_DATA *recd, int enc)
 262 {
 263     int ret = 0;
 264     unsigned char *refd;
 265     size_t refdatalen;
 266
 267     if (enc)
 268         refd = multihexstr2buf(recd->ciphertext, &refdatalen);
 269     else
 270         refd = multihexstr2buf(recd->plaintext, &refdatalen);
 271
 272     if (refd == NULL) {
 273         fprintf(stderr, "Failed to get reference data\n");
 274         goto err;
 275     }
 276
 277     if (rec->length != refdatalen) {
 278         fprintf(stderr, "Unexpected length\n");
 279         goto err;
 280     }
 281
 282     if (memcmp(rec->data, refd, refdatalen) != 0) {
 283         fprintf(stderr, "Data does not match\n");
 284         goto err;
 285     }
 286
 287     ret = 1;
 288
 289  err:
 290     OPENSSL_free(refd);
 291     return ret;
 292 }
 293
 294 #define TLS13_AES_128_GCM_SHA256_BYTES  ((const unsigned char *)"\x13\x01")
 295
 296 static int test_tls13_encryption(void)
 297 {
 298     SSL_CTX *ctx = NULL;
 299     SSL *s = NULL;
 300     SSL3_RECORD rec;
 301     unsigned char *key = NULL, *iv = NULL, *seq = NULL;
 302     const EVP_CIPHER *ciph = EVP_aes_128_gcm();
 303     int ret = 0;
 304     size_t ivlen, ctr;
 305
 306     rec.data = NULL;
 307
 308     ctx = SSL_CTX_new(TLS_method());
 309     if (ctx == NULL) {
 310         fprintf(stderr, "Failed creating SSL_CTX\n");
 311         goto err;
 312     }
 313
 314     s = SSL_new(ctx);
 315     if (s == NULL) {
 316         fprintf(stderr, "Failed creating SSL\n");
 317         goto err;
 318     }
 319
 320     s->enc_read_ctx = EVP_CIPHER_CTX_new();
 321     s->enc_write_ctx = EVP_CIPHER_CTX_new();
 322     if (s->enc_read_ctx == NULL || s->enc_write_ctx == NULL) {
 323         fprintf(stderr, "Failed creating EVP_CIPHER_CTX\n");
 324         goto err;
 325     }
 326
 327     s->s3->tmp.new_cipher = SSL_CIPHER_find(s, TLS13_AES_128_GCM_SHA256_BYTES);
 328     if (s->s3->tmp.new_cipher == NULL) {
 329         fprintf(stderr, "Failed to find cipher\n");
 330         goto err;
 331     }
 332
 333     for (ctr = 0; ctr < OSSL_NELEM(refdata); ctr++) {
 334         /* Load the record */
 335         ivlen = EVP_CIPHER_iv_length(ciph);
 336         if (!load_record(&rec, &refdata[ctr], &key, s->read_iv, ivlen,
 337                          RECORD_LAYER_get_read_sequence(&s->rlayer))) {
 338             fprintf(stderr, "Failed loading key into EVP_CIPHER_CTX\n");
 339             goto err;
 340         }
 341
 342         /* Set up the read/write sequences */
 343         memcpy(RECORD_LAYER_get_write_sequence(&s->rlayer),
 344                RECORD_LAYER_get_read_sequence(&s->rlayer), SEQ_NUM_SIZE);
 345         memcpy(s->write_iv, s->read_iv, ivlen);
 346
 347         /* Load the key into the EVP_CIPHER_CTXs */
 348         if (EVP_CipherInit_ex(s->enc_write_ctx, ciph, NULL, key, NULL, 1) <= 0
 349                 || EVP_CipherInit_ex(s->enc_read_ctx, ciph, NULL, key, NULL, 0)
 350                    <= 0) {
 351             fprintf(stderr, "Failed loading key into EVP_CIPHER_CTX\n");
 352             goto err;
 353         }
 354
 355         /* Encrypt it */
 356         if (tls13_enc(s, &rec, 1, 1) != 1) {
 357             fprintf(stderr, "Failed to encrypt record %"OSSLzu"\n", ctr);
 358             goto err;
 359         }
 360         if (!test_record(&rec, &refdata[ctr], 1)) {
 361             fprintf(stderr, "Record %"OSSLzu" encryption test failed\n", ctr);
 362             goto err;
 363         }
 364
 365         /* Decrypt it */
 366         if (tls13_enc(s, &rec, 1, 0) != 1) {
 367             fprintf(stderr, "Failed to decrypt record %"OSSLzu"\n", ctr);
 368             goto err;
 369         }
 370         if (!test_record(&rec, &refdata[ctr], 0)) {
 371             fprintf(stderr, "Record %"OSSLzu" decryption test failed\n", ctr);
 372             goto err;
 373         }
 374
 375         OPENSSL_free(rec.data);
 376         OPENSSL_free(key);
 377         OPENSSL_free(iv);
 378         OPENSSL_free(seq);
 379         rec.data = NULL;
 380         key = NULL;
 381         iv = NULL;
 382         seq = NULL;
 383     }
 384
 385     fprintf(stderr, "PASS: %"OSSLzu" records tested\n", ctr);
 386     ret = 1;
 387
 388  err:
 389     OPENSSL_free(rec.data);
 390     OPENSSL_free(key);
 391     OPENSSL_free(iv);
 392     OPENSSL_free(seq);
 393     SSL_free(s);
 394     SSL_CTX_free(ctx);
 395     return ret;
 396 }
 397
 398 void register_tests(void)
 399 {
 400     ADD_TEST(test_tls13_encryption);
 401 }