1 /* $OpenBSD: test_sshkey.c,v 1.4 2015/04/22 01:38:36 djm Exp $ */ 2 /* 3 * Regress test for sshkey.h key management API 4 * 5 * Placed in the public domain 6 */ 7 8 #include "includes.h" 9 10 #include <sys/types.h> 11 #include <sys/param.h> 12 #include <stdio.h> 13 #ifdef HAVE_STDINT_H 14 #include <stdint.h> 15 #endif 16 #include <stdlib.h> 17 #include <string.h> 18 19 #include <openssl/bn.h> 20 #include <openssl/rsa.h> 21 #include <openssl/dsa.h> 22 #if defined(OPENSSL_HAS_ECC) && defined(OPENSSL_HAS_NISTP256) 23 # include <openssl/ec.h> 24 #endif 25 26 #include "../test_helper/test_helper.h" 27 28 #include "ssherr.h" 29 #include "sshbuf.h" 30 #define SSHBUF_INTERNAL 1 /* access internals for testing */ 31 #include "sshkey.h" 32 33 #include "authfile.h" 34 #include "common.h" 35 #include "ssh2.h" 36 37 void sshkey_tests(void); 38 39 static void 40 put_opt(struct sshbuf *b, const char *name, const char *value) 41 { 42 struct sshbuf *sect; 43 44 sect = sshbuf_new(); 45 ASSERT_PTR_NE(sect, NULL); 46 ASSERT_INT_EQ(sshbuf_put_cstring(b, name), 0); 47 if (value != NULL) 48 ASSERT_INT_EQ(sshbuf_put_cstring(sect, value), 0); 49 ASSERT_INT_EQ(sshbuf_put_stringb(b, sect), 0); 50 sshbuf_free(sect); 51 } 52 53 static void 54 build_cert(struct sshbuf *b, const struct sshkey *k, const char *type, 55 const struct sshkey *sign_key, const struct sshkey *ca_key) 56 { 57 struct sshbuf *ca_buf, *pk, *principals, *critopts, *exts; 58 u_char *sigblob; 59 size_t siglen; 60 61 ca_buf = sshbuf_new(); 62 ASSERT_PTR_NE(ca_buf, NULL); 63 ASSERT_INT_EQ(sshkey_putb(ca_key, ca_buf), 0); 64 65 /* 66 * Get the public key serialisation by rendering the key and skipping 67 * the type string. This is a bit of a hack :/ 68 */ 69 pk = sshbuf_new(); 70 ASSERT_PTR_NE(pk, NULL); 71 ASSERT_INT_EQ(sshkey_putb_plain(k, pk), 0); 72 ASSERT_INT_EQ(sshbuf_skip_string(pk), 0); 73 74 principals = sshbuf_new(); 75 ASSERT_PTR_NE(principals, NULL); 76 ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gsamsa"), 0); 77 ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gregor"), 0); 78 79 critopts = sshbuf_new(); 80 ASSERT_PTR_NE(critopts, NULL); 81 put_opt(critopts, "force-command", "/usr/local/bin/nethack"); 82 put_opt(critopts, "source-address", "192.168.0.0/24,127.0.0.1,::1"); 83 84 exts = sshbuf_new(); 85 ASSERT_PTR_NE(exts, NULL); 86 put_opt(critopts, "permit-X11-forwarding", NULL); 87 88 ASSERT_INT_EQ(sshbuf_put_cstring(b, type), 0); 89 ASSERT_INT_EQ(sshbuf_put_cstring(b, "noncenoncenonce!"), 0); /* nonce */ 90 ASSERT_INT_EQ(sshbuf_putb(b, pk), 0); /* public key serialisation */ 91 ASSERT_INT_EQ(sshbuf_put_u64(b, 1234), 0); /* serial */ 92 ASSERT_INT_EQ(sshbuf_put_u32(b, SSH2_CERT_TYPE_USER), 0); /* type */ 93 ASSERT_INT_EQ(sshbuf_put_cstring(b, "gregor"), 0); /* key ID */ 94 ASSERT_INT_EQ(sshbuf_put_stringb(b, principals), 0); /* principals */ 95 ASSERT_INT_EQ(sshbuf_put_u64(b, 0), 0); /* start */ 96 ASSERT_INT_EQ(sshbuf_put_u64(b, 0xffffffffffffffffULL), 0); /* end */ 97 ASSERT_INT_EQ(sshbuf_put_stringb(b, critopts), 0); /* options */ 98 ASSERT_INT_EQ(sshbuf_put_stringb(b, exts), 0); /* extensions */ 99 ASSERT_INT_EQ(sshbuf_put_string(b, NULL, 0), 0); /* reserved */ 100 ASSERT_INT_EQ(sshbuf_put_stringb(b, ca_buf), 0); /* signature key */ 101 ASSERT_INT_EQ(sshkey_sign(sign_key, &sigblob, &siglen, 102 sshbuf_ptr(b), sshbuf_len(b), 0), 0); 103 ASSERT_INT_EQ(sshbuf_put_string(b, sigblob, siglen), 0); /* signature */ 104 105 free(sigblob); 106 sshbuf_free(ca_buf); 107 sshbuf_free(exts); 108 sshbuf_free(critopts); 109 sshbuf_free(principals); 110 sshbuf_free(pk); 111 } 112 113 static void 114 signature_test(struct sshkey *k, struct sshkey *bad, const u_char *d, size_t l) 115 { 116 size_t len; 117 u_char *sig; 118 119 ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, 0), 0); 120 ASSERT_SIZE_T_GT(len, 8); 121 ASSERT_PTR_NE(sig, NULL); 122 ASSERT_INT_EQ(sshkey_verify(k, sig, len, d, l, 0), 0); 123 ASSERT_INT_NE(sshkey_verify(bad, sig, len, d, l, 0), 0); 124 /* Fuzz test is more comprehensive, this is just a smoke test */ 125 sig[len - 5] ^= 0x10; 126 ASSERT_INT_NE(sshkey_verify(k, sig, len, d, l, 0), 0); 127 free(sig); 128 } 129 130 static void 131 banana(u_char *s, size_t l) 132 { 133 size_t o; 134 const u_char the_banana[] = { 'b', 'a', 'n', 'a', 'n', 'a' }; 135 136 for (o = 0; o < l; o += sizeof(the_banana)) { 137 if (l - o < sizeof(the_banana)) { 138 memcpy(s + o, "nanananana", l - o); 139 break; 140 } 141 memcpy(s + o, banana, sizeof(the_banana)); 142 } 143 } 144 145 static void 146 signature_tests(struct sshkey *k, struct sshkey *bad) 147 { 148 u_char i, buf[2049]; 149 size_t lens[] = { 150 1, 2, 7, 8, 9, 15, 16, 17, 31, 32, 33, 127, 128, 129, 151 255, 256, 257, 1023, 1024, 1025, 2047, 2048, 2049 152 }; 153 154 for (i = 0; i < (sizeof(lens)/sizeof(lens[0])); i++) { 155 test_subtest_info("%s key, banana length %zu", 156 sshkey_type(k), lens[i]); 157 banana(buf, lens[i]); 158 signature_test(k, bad, buf, lens[i]); 159 } 160 } 161 162 static struct sshkey * 163 get_private(const char *n) 164 { 165 struct sshbuf *b; 166 struct sshkey *ret; 167 168 b = load_file(n); 169 ASSERT_INT_EQ(sshkey_parse_private_fileblob(b, "", n, &ret, NULL), 0); 170 sshbuf_free(b); 171 return ret; 172 } 173 174 void 175 sshkey_tests(void) 176 { 177 struct sshkey *k1, *k2, *k3, *k4, *kr, *kd, *kf; 178 #ifdef OPENSSL_HAS_ECC 179 struct sshkey *ke; 180 #endif 181 struct sshbuf *b; 182 183 TEST_START("new invalid"); 184 k1 = sshkey_new(-42); 185 ASSERT_PTR_EQ(k1, NULL); 186 TEST_DONE(); 187 188 TEST_START("new/free KEY_UNSPEC"); 189 k1 = sshkey_new(KEY_UNSPEC); 190 ASSERT_PTR_NE(k1, NULL); 191 sshkey_free(k1); 192 TEST_DONE(); 193 194 TEST_START("new/free KEY_RSA1"); 195 k1 = sshkey_new(KEY_RSA1); 196 ASSERT_PTR_NE(k1, NULL); 197 ASSERT_PTR_NE(k1->rsa, NULL); 198 ASSERT_PTR_NE(k1->rsa->n, NULL); 199 ASSERT_PTR_NE(k1->rsa->e, NULL); 200 ASSERT_PTR_EQ(k1->rsa->p, NULL); 201 sshkey_free(k1); 202 TEST_DONE(); 203 204 TEST_START("new/free KEY_RSA"); 205 k1 = sshkey_new(KEY_RSA); 206 ASSERT_PTR_NE(k1, NULL); 207 ASSERT_PTR_NE(k1->rsa, NULL); 208 ASSERT_PTR_NE(k1->rsa->n, NULL); 209 ASSERT_PTR_NE(k1->rsa->e, NULL); 210 ASSERT_PTR_EQ(k1->rsa->p, NULL); 211 sshkey_free(k1); 212 TEST_DONE(); 213 214 TEST_START("new/free KEY_DSA"); 215 k1 = sshkey_new(KEY_DSA); 216 ASSERT_PTR_NE(k1, NULL); 217 ASSERT_PTR_NE(k1->dsa, NULL); 218 ASSERT_PTR_NE(k1->dsa->g, NULL); 219 ASSERT_PTR_EQ(k1->dsa->priv_key, NULL); 220 sshkey_free(k1); 221 TEST_DONE(); 222 223 #ifdef OPENSSL_HAS_ECC 224 TEST_START("new/free KEY_ECDSA"); 225 k1 = sshkey_new(KEY_ECDSA); 226 ASSERT_PTR_NE(k1, NULL); 227 ASSERT_PTR_EQ(k1->ecdsa, NULL); /* Can't allocate without NID */ 228 sshkey_free(k1); 229 TEST_DONE(); 230 #endif 231 232 TEST_START("new/free KEY_ED25519"); 233 k1 = sshkey_new(KEY_ED25519); 234 ASSERT_PTR_NE(k1, NULL); 235 /* These should be blank until key loaded or generated */ 236 ASSERT_PTR_EQ(k1->ed25519_sk, NULL); 237 ASSERT_PTR_EQ(k1->ed25519_pk, NULL); 238 sshkey_free(k1); 239 TEST_DONE(); 240 241 TEST_START("new_private KEY_RSA"); 242 k1 = sshkey_new_private(KEY_RSA); 243 ASSERT_PTR_NE(k1, NULL); 244 ASSERT_PTR_NE(k1->rsa, NULL); 245 ASSERT_PTR_NE(k1->rsa->n, NULL); 246 ASSERT_PTR_NE(k1->rsa->e, NULL); 247 ASSERT_PTR_NE(k1->rsa->p, NULL); 248 ASSERT_INT_EQ(sshkey_add_private(k1), 0); 249 sshkey_free(k1); 250 TEST_DONE(); 251 252 TEST_START("new_private KEY_DSA"); 253 k1 = sshkey_new_private(KEY_DSA); 254 ASSERT_PTR_NE(k1, NULL); 255 ASSERT_PTR_NE(k1->dsa, NULL); 256 ASSERT_PTR_NE(k1->dsa->g, NULL); 257 ASSERT_PTR_NE(k1->dsa->priv_key, NULL); 258 ASSERT_INT_EQ(sshkey_add_private(k1), 0); 259 sshkey_free(k1); 260 TEST_DONE(); 261 262 TEST_START("generate KEY_RSA too small modulus"); 263 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 128, &k1), 264 SSH_ERR_INVALID_ARGUMENT); 265 ASSERT_PTR_EQ(k1, NULL); 266 TEST_DONE(); 267 268 TEST_START("generate KEY_RSA too large modulus"); 269 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1 << 20, &k1), 270 SSH_ERR_INVALID_ARGUMENT); 271 ASSERT_PTR_EQ(k1, NULL); 272 TEST_DONE(); 273 274 TEST_START("generate KEY_DSA wrong bits"); 275 ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 2048, &k1), 276 SSH_ERR_INVALID_ARGUMENT); 277 ASSERT_PTR_EQ(k1, NULL); 278 sshkey_free(k1); 279 TEST_DONE(); 280 281 #ifdef OPENSSL_HAS_ECC 282 TEST_START("generate KEY_ECDSA wrong bits"); 283 ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 42, &k1), 284 SSH_ERR_INVALID_ARGUMENT); 285 ASSERT_PTR_EQ(k1, NULL); 286 sshkey_free(k1); 287 TEST_DONE(); 288 #endif 289 290 TEST_START("generate KEY_RSA"); 291 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 768, &kr), 0); 292 ASSERT_PTR_NE(kr, NULL); 293 ASSERT_PTR_NE(kr->rsa, NULL); 294 ASSERT_PTR_NE(kr->rsa->n, NULL); 295 ASSERT_PTR_NE(kr->rsa->e, NULL); 296 ASSERT_PTR_NE(kr->rsa->p, NULL); 297 ASSERT_INT_EQ(BN_num_bits(kr->rsa->n), 768); 298 TEST_DONE(); 299 300 TEST_START("generate KEY_DSA"); 301 ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &kd), 0); 302 ASSERT_PTR_NE(kd, NULL); 303 ASSERT_PTR_NE(kd->dsa, NULL); 304 ASSERT_PTR_NE(kd->dsa->g, NULL); 305 ASSERT_PTR_NE(kd->dsa->priv_key, NULL); 306 TEST_DONE(); 307 308 #ifdef OPENSSL_HAS_ECC 309 TEST_START("generate KEY_ECDSA"); 310 ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &ke), 0); 311 ASSERT_PTR_NE(ke, NULL); 312 ASSERT_PTR_NE(ke->ecdsa, NULL); 313 ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL); 314 ASSERT_PTR_NE(EC_KEY_get0_private_key(ke->ecdsa), NULL); 315 TEST_DONE(); 316 #endif 317 318 TEST_START("generate KEY_ED25519"); 319 ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &kf), 0); 320 ASSERT_PTR_NE(kf, NULL); 321 ASSERT_INT_EQ(kf->type, KEY_ED25519); 322 ASSERT_PTR_NE(kf->ed25519_pk, NULL); 323 ASSERT_PTR_NE(kf->ed25519_sk, NULL); 324 TEST_DONE(); 325 326 TEST_START("demote KEY_RSA"); 327 ASSERT_INT_EQ(sshkey_demote(kr, &k1), 0); 328 ASSERT_PTR_NE(k1, NULL); 329 ASSERT_PTR_NE(kr, k1); 330 ASSERT_INT_EQ(k1->type, KEY_RSA); 331 ASSERT_PTR_NE(k1->rsa, NULL); 332 ASSERT_PTR_NE(k1->rsa->n, NULL); 333 ASSERT_PTR_NE(k1->rsa->e, NULL); 334 ASSERT_PTR_EQ(k1->rsa->p, NULL); 335 TEST_DONE(); 336 337 TEST_START("equal KEY_RSA/demoted KEY_RSA"); 338 ASSERT_INT_EQ(sshkey_equal(kr, k1), 1); 339 sshkey_free(k1); 340 TEST_DONE(); 341 342 TEST_START("demote KEY_DSA"); 343 ASSERT_INT_EQ(sshkey_demote(kd, &k1), 0); 344 ASSERT_PTR_NE(k1, NULL); 345 ASSERT_PTR_NE(kd, k1); 346 ASSERT_INT_EQ(k1->type, KEY_DSA); 347 ASSERT_PTR_NE(k1->dsa, NULL); 348 ASSERT_PTR_NE(k1->dsa->g, NULL); 349 ASSERT_PTR_EQ(k1->dsa->priv_key, NULL); 350 TEST_DONE(); 351 352 TEST_START("equal KEY_DSA/demoted KEY_DSA"); 353 ASSERT_INT_EQ(sshkey_equal(kd, k1), 1); 354 sshkey_free(k1); 355 TEST_DONE(); 356 357 #ifdef OPENSSL_HAS_ECC 358 TEST_START("demote KEY_ECDSA"); 359 ASSERT_INT_EQ(sshkey_demote(ke, &k1), 0); 360 ASSERT_PTR_NE(k1, NULL); 361 ASSERT_PTR_NE(ke, k1); 362 ASSERT_INT_EQ(k1->type, KEY_ECDSA); 363 ASSERT_PTR_NE(k1->ecdsa, NULL); 364 ASSERT_INT_EQ(k1->ecdsa_nid, ke->ecdsa_nid); 365 ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL); 366 ASSERT_PTR_EQ(EC_KEY_get0_private_key(k1->ecdsa), NULL); 367 TEST_DONE(); 368 369 TEST_START("equal KEY_ECDSA/demoted KEY_ECDSA"); 370 ASSERT_INT_EQ(sshkey_equal(ke, k1), 1); 371 sshkey_free(k1); 372 TEST_DONE(); 373 #endif 374 375 TEST_START("demote KEY_ED25519"); 376 ASSERT_INT_EQ(sshkey_demote(kf, &k1), 0); 377 ASSERT_PTR_NE(k1, NULL); 378 ASSERT_PTR_NE(kf, k1); 379 ASSERT_INT_EQ(k1->type, KEY_ED25519); 380 ASSERT_PTR_NE(k1->ed25519_pk, NULL); 381 ASSERT_PTR_EQ(k1->ed25519_sk, NULL); 382 TEST_DONE(); 383 384 TEST_START("equal KEY_ED25519/demoted KEY_ED25519"); 385 ASSERT_INT_EQ(sshkey_equal(kf, k1), 1); 386 sshkey_free(k1); 387 TEST_DONE(); 388 389 TEST_START("equal mismatched key types"); 390 ASSERT_INT_EQ(sshkey_equal(kd, kr), 0); 391 #ifdef OPENSSL_HAS_ECC 392 ASSERT_INT_EQ(sshkey_equal(kd, ke), 0); 393 ASSERT_INT_EQ(sshkey_equal(kr, ke), 0); 394 ASSERT_INT_EQ(sshkey_equal(ke, kf), 0); 395 #endif 396 ASSERT_INT_EQ(sshkey_equal(kd, kf), 0); 397 TEST_DONE(); 398 399 TEST_START("equal different keys"); 400 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 768, &k1), 0); 401 ASSERT_INT_EQ(sshkey_equal(kr, k1), 0); 402 sshkey_free(k1); 403 ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &k1), 0); 404 ASSERT_INT_EQ(sshkey_equal(kd, k1), 0); 405 sshkey_free(k1); 406 #ifdef OPENSSL_HAS_ECC 407 ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &k1), 0); 408 ASSERT_INT_EQ(sshkey_equal(ke, k1), 0); 409 sshkey_free(k1); 410 #endif 411 ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &k1), 0); 412 ASSERT_INT_EQ(sshkey_equal(kf, k1), 0); 413 sshkey_free(k1); 414 TEST_DONE(); 415 416 sshkey_free(kr); 417 sshkey_free(kd); 418 #ifdef OPENSSL_HAS_ECC 419 sshkey_free(ke); 420 #endif 421 sshkey_free(kf); 422 423 TEST_START("certify key"); 424 ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_1.pub"), 425 &k1, NULL), 0); 426 k2 = get_private("ed25519_2"); 427 ASSERT_INT_EQ(sshkey_to_certified(k1, 0), 0); 428 ASSERT_PTR_NE(k1->cert, NULL); 429 k1->cert->type = SSH2_CERT_TYPE_USER; 430 k1->cert->serial = 1234; 431 k1->cert->key_id = strdup("estragon"); 432 ASSERT_PTR_NE(k1->cert->key_id, NULL); 433 k1->cert->principals = calloc(4, sizeof(*k1->cert->principals)); 434 ASSERT_PTR_NE(k1->cert->principals, NULL); 435 k1->cert->principals[0] = strdup("estragon"); 436 k1->cert->principals[1] = strdup("vladimir"); 437 k1->cert->principals[2] = strdup("pozzo"); 438 k1->cert->principals[3] = strdup("lucky"); 439 ASSERT_PTR_NE(k1->cert->principals[0], NULL); 440 ASSERT_PTR_NE(k1->cert->principals[1], NULL); 441 ASSERT_PTR_NE(k1->cert->principals[2], NULL); 442 ASSERT_PTR_NE(k1->cert->principals[3], NULL); 443 k1->cert->valid_after = 0; 444 k1->cert->valid_before = (u_int64_t)-1; 445 k1->cert->critical = sshbuf_new(); 446 ASSERT_PTR_NE(k1->cert->critical, NULL); 447 k1->cert->extensions = sshbuf_new(); 448 ASSERT_PTR_NE(k1->cert->extensions, NULL); 449 put_opt(k1->cert->critical, "force-command", "/usr/bin/true"); 450 put_opt(k1->cert->critical, "source-address", "127.0.0.1"); 451 put_opt(k1->cert->extensions, "permit-X11-forwarding", NULL); 452 put_opt(k1->cert->extensions, "permit-agent-forwarding", NULL); 453 ASSERT_INT_EQ(sshkey_from_private(k2, &k1->cert->signature_key), 0); 454 ASSERT_INT_EQ(sshkey_certify(k1, k2), 0); 455 b = sshbuf_new(); 456 ASSERT_PTR_NE(b, NULL); 457 ASSERT_INT_EQ(sshkey_putb(k1, b), 0); 458 ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k3), 0); 459 460 sshkey_free(k1); 461 sshkey_free(k2); 462 sshkey_free(k3); 463 sshbuf_reset(b); 464 TEST_DONE(); 465 466 TEST_START("sign and verify RSA"); 467 k1 = get_private("rsa_1"); 468 ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2, 469 NULL), 0); 470 signature_tests(k1, k2); 471 sshkey_free(k1); 472 sshkey_free(k2); 473 TEST_DONE(); 474 475 TEST_START("sign and verify DSA"); 476 k1 = get_private("dsa_1"); 477 ASSERT_INT_EQ(sshkey_load_public(test_data_file("dsa_2.pub"), &k2, 478 NULL), 0); 479 signature_tests(k1, k2); 480 sshkey_free(k1); 481 sshkey_free(k2); 482 TEST_DONE(); 483 484 #ifdef OPENSSL_HAS_ECC 485 TEST_START("sign and verify ECDSA"); 486 k1 = get_private("ecdsa_1"); 487 ASSERT_INT_EQ(sshkey_load_public(test_data_file("ecdsa_2.pub"), &k2, 488 NULL), 0); 489 signature_tests(k1, k2); 490 sshkey_free(k1); 491 sshkey_free(k2); 492 TEST_DONE(); 493 #endif 494 495 TEST_START("sign and verify ED25519"); 496 k1 = get_private("ed25519_1"); 497 ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_2.pub"), &k2, 498 NULL), 0); 499 signature_tests(k1, k2); 500 sshkey_free(k1); 501 sshkey_free(k2); 502 TEST_DONE(); 503 504 TEST_START("nested certificate"); 505 ASSERT_INT_EQ(sshkey_load_cert(test_data_file("rsa_1"), &k1), 0); 506 ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_1.pub"), &k2, 507 NULL), 0); 508 k3 = get_private("rsa_1"); 509 build_cert(b, k2, "ssh-rsa-cert-v01@openssh.com", k3, k1); 510 ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k4), 511 SSH_ERR_KEY_CERT_INVALID_SIGN_KEY); 512 ASSERT_PTR_EQ(k4, NULL); 513 sshkey_free(k1); 514 sshkey_free(k2); 515 sshkey_free(k3); 516 sshbuf_free(b); 517 TEST_DONE(); 518 519 } 520