1 /* $OpenBSD: test_sshkey.c,v 1.12 2017/05/08 06:08:42 djm Exp $ */ 2 /* 3 * Regress test for sshkey.h key management API 4 * 5 * Placed in the public domain 6 */ 7 8 #include <sys/types.h> 9 #include <sys/param.h> 10 #include <stdio.h> 11 #include <stdint.h> 12 #include <stdlib.h> 13 #include <string.h> 14 15 #include <openssl/bn.h> 16 #include <openssl/ec.h> 17 #include <openssl/rsa.h> 18 #include <openssl/dsa.h> 19 20 #include "test_helper.h" 21 22 #include "ssherr.h" 23 #include "sshbuf.h" 24 #define SSHBUF_INTERNAL 1 /* access internals for testing */ 25 #include "sshkey.h" 26 27 #include "authfile.h" 28 #include "common.h" 29 #include "ssh2.h" 30 31 void sshkey_tests(void); 32 33 static void 34 put_opt(struct sshbuf *b, const char *name, const char *value) 35 { 36 struct sshbuf *sect; 37 38 sect = sshbuf_new(); 39 ASSERT_PTR_NE(sect, NULL); 40 ASSERT_INT_EQ(sshbuf_put_cstring(b, name), 0); 41 if (value != NULL) 42 ASSERT_INT_EQ(sshbuf_put_cstring(sect, value), 0); 43 ASSERT_INT_EQ(sshbuf_put_stringb(b, sect), 0); 44 sshbuf_free(sect); 45 } 46 47 static void 48 build_cert(struct sshbuf *b, const struct sshkey *k, const char *type, 49 const struct sshkey *sign_key, const struct sshkey *ca_key, 50 const char *sig_alg) 51 { 52 struct sshbuf *ca_buf, *pk, *principals, *critopts, *exts; 53 u_char *sigblob; 54 size_t siglen; 55 56 ca_buf = sshbuf_new(); 57 ASSERT_PTR_NE(ca_buf, NULL); 58 ASSERT_INT_EQ(sshkey_putb(ca_key, ca_buf), 0); 59 60 /* 61 * Get the public key serialisation by rendering the key and skipping 62 * the type string. This is a bit of a hack :/ 63 */ 64 pk = sshbuf_new(); 65 ASSERT_PTR_NE(pk, NULL); 66 ASSERT_INT_EQ(sshkey_putb_plain(k, pk), 0); 67 ASSERT_INT_EQ(sshbuf_skip_string(pk), 0); 68 69 principals = sshbuf_new(); 70 ASSERT_PTR_NE(principals, NULL); 71 ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gsamsa"), 0); 72 ASSERT_INT_EQ(sshbuf_put_cstring(principals, "gregor"), 0); 73 74 critopts = sshbuf_new(); 75 ASSERT_PTR_NE(critopts, NULL); 76 put_opt(critopts, "force-command", "/usr/local/bin/nethack"); 77 put_opt(critopts, "source-address", "192.168.0.0/24,127.0.0.1,::1"); 78 79 exts = sshbuf_new(); 80 ASSERT_PTR_NE(exts, NULL); 81 put_opt(critopts, "permit-X11-forwarding", NULL); 82 83 ASSERT_INT_EQ(sshbuf_put_cstring(b, type), 0); 84 ASSERT_INT_EQ(sshbuf_put_cstring(b, "noncenoncenonce!"), 0); /* nonce */ 85 ASSERT_INT_EQ(sshbuf_putb(b, pk), 0); /* public key serialisation */ 86 ASSERT_INT_EQ(sshbuf_put_u64(b, 1234), 0); /* serial */ 87 ASSERT_INT_EQ(sshbuf_put_u32(b, SSH2_CERT_TYPE_USER), 0); /* type */ 88 ASSERT_INT_EQ(sshbuf_put_cstring(b, "gregor"), 0); /* key ID */ 89 ASSERT_INT_EQ(sshbuf_put_stringb(b, principals), 0); /* principals */ 90 ASSERT_INT_EQ(sshbuf_put_u64(b, 0), 0); /* start */ 91 ASSERT_INT_EQ(sshbuf_put_u64(b, 0xffffffffffffffffULL), 0); /* end */ 92 ASSERT_INT_EQ(sshbuf_put_stringb(b, critopts), 0); /* options */ 93 ASSERT_INT_EQ(sshbuf_put_stringb(b, exts), 0); /* extensions */ 94 ASSERT_INT_EQ(sshbuf_put_string(b, NULL, 0), 0); /* reserved */ 95 ASSERT_INT_EQ(sshbuf_put_stringb(b, ca_buf), 0); /* signature key */ 96 ASSERT_INT_EQ(sshkey_sign(sign_key, &sigblob, &siglen, 97 sshbuf_ptr(b), sshbuf_len(b), sig_alg, 0), 0); 98 ASSERT_INT_EQ(sshbuf_put_string(b, sigblob, siglen), 0); /* signature */ 99 100 free(sigblob); 101 sshbuf_free(ca_buf); 102 sshbuf_free(exts); 103 sshbuf_free(critopts); 104 sshbuf_free(principals); 105 sshbuf_free(pk); 106 } 107 108 static void 109 signature_test(struct sshkey *k, struct sshkey *bad, const char *sig_alg, 110 const u_char *d, size_t l) 111 { 112 size_t len; 113 u_char *sig; 114 115 ASSERT_INT_EQ(sshkey_sign(k, &sig, &len, d, l, sig_alg, 0), 0); 116 ASSERT_SIZE_T_GT(len, 8); 117 ASSERT_PTR_NE(sig, NULL); 118 ASSERT_INT_EQ(sshkey_verify(k, sig, len, d, l, 0), 0); 119 ASSERT_INT_NE(sshkey_verify(bad, sig, len, d, l, 0), 0); 120 /* Fuzz test is more comprehensive, this is just a smoke test */ 121 sig[len - 5] ^= 0x10; 122 ASSERT_INT_NE(sshkey_verify(k, sig, len, d, l, 0), 0); 123 free(sig); 124 } 125 126 static void 127 banana(u_char *s, size_t l) 128 { 129 size_t o; 130 const u_char the_banana[] = { 'b', 'a', 'n', 'a', 'n', 'a' }; 131 132 for (o = 0; o < l; o += sizeof(the_banana)) { 133 if (l - o < sizeof(the_banana)) { 134 memcpy(s + o, "nanananana", l - o); 135 break; 136 } 137 memcpy(s + o, banana, sizeof(the_banana)); 138 } 139 } 140 141 static void 142 signature_tests(struct sshkey *k, struct sshkey *bad, const char *sig_alg) 143 { 144 u_char i, buf[2049]; 145 size_t lens[] = { 146 1, 2, 7, 8, 9, 15, 16, 17, 31, 32, 33, 127, 128, 129, 147 255, 256, 257, 1023, 1024, 1025, 2047, 2048, 2049 148 }; 149 150 for (i = 0; i < (sizeof(lens)/sizeof(lens[0])); i++) { 151 test_subtest_info("%s key, banana length %zu", 152 sshkey_type(k), lens[i]); 153 banana(buf, lens[i]); 154 signature_test(k, bad, sig_alg, buf, lens[i]); 155 } 156 } 157 158 static struct sshkey * 159 get_private(const char *n) 160 { 161 struct sshbuf *b; 162 struct sshkey *ret; 163 164 b = load_file(n); 165 ASSERT_INT_EQ(sshkey_parse_private_fileblob(b, "", &ret, NULL), 0); 166 sshbuf_free(b); 167 return ret; 168 } 169 170 void 171 sshkey_tests(void) 172 { 173 struct sshkey *k1, *k2, *k3, *k4, *kr, *kd, *ke, *kf; 174 struct sshbuf *b; 175 176 TEST_START("new invalid"); 177 k1 = sshkey_new(-42); 178 ASSERT_PTR_EQ(k1, NULL); 179 TEST_DONE(); 180 181 TEST_START("new/free KEY_UNSPEC"); 182 k1 = sshkey_new(KEY_UNSPEC); 183 ASSERT_PTR_NE(k1, NULL); 184 sshkey_free(k1); 185 TEST_DONE(); 186 187 TEST_START("new/free KEY_RSA"); 188 k1 = sshkey_new(KEY_RSA); 189 ASSERT_PTR_NE(k1, NULL); 190 ASSERT_PTR_NE(k1->rsa, NULL); 191 ASSERT_PTR_NE(k1->rsa->n, NULL); 192 ASSERT_PTR_NE(k1->rsa->e, NULL); 193 ASSERT_PTR_EQ(k1->rsa->p, NULL); 194 sshkey_free(k1); 195 TEST_DONE(); 196 197 TEST_START("new/free KEY_DSA"); 198 k1 = sshkey_new(KEY_DSA); 199 ASSERT_PTR_NE(k1, NULL); 200 ASSERT_PTR_NE(k1->dsa, NULL); 201 ASSERT_PTR_NE(k1->dsa->g, NULL); 202 ASSERT_PTR_EQ(k1->dsa->priv_key, NULL); 203 sshkey_free(k1); 204 TEST_DONE(); 205 206 TEST_START("new/free KEY_ECDSA"); 207 k1 = sshkey_new(KEY_ECDSA); 208 ASSERT_PTR_NE(k1, NULL); 209 ASSERT_PTR_EQ(k1->ecdsa, NULL); /* Can't allocate without NID */ 210 sshkey_free(k1); 211 TEST_DONE(); 212 213 TEST_START("new/free KEY_ED25519"); 214 k1 = sshkey_new(KEY_ED25519); 215 ASSERT_PTR_NE(k1, NULL); 216 /* These should be blank until key loaded or generated */ 217 ASSERT_PTR_EQ(k1->ed25519_sk, NULL); 218 ASSERT_PTR_EQ(k1->ed25519_pk, NULL); 219 sshkey_free(k1); 220 TEST_DONE(); 221 222 TEST_START("new_private KEY_RSA"); 223 k1 = sshkey_new_private(KEY_RSA); 224 ASSERT_PTR_NE(k1, NULL); 225 ASSERT_PTR_NE(k1->rsa, NULL); 226 ASSERT_PTR_NE(k1->rsa->n, NULL); 227 ASSERT_PTR_NE(k1->rsa->e, NULL); 228 ASSERT_PTR_NE(k1->rsa->p, NULL); 229 ASSERT_INT_EQ(sshkey_add_private(k1), 0); 230 sshkey_free(k1); 231 TEST_DONE(); 232 233 TEST_START("new_private KEY_DSA"); 234 k1 = sshkey_new_private(KEY_DSA); 235 ASSERT_PTR_NE(k1, NULL); 236 ASSERT_PTR_NE(k1->dsa, NULL); 237 ASSERT_PTR_NE(k1->dsa->g, NULL); 238 ASSERT_PTR_NE(k1->dsa->priv_key, NULL); 239 ASSERT_INT_EQ(sshkey_add_private(k1), 0); 240 sshkey_free(k1); 241 TEST_DONE(); 242 243 TEST_START("generate KEY_RSA too small modulus"); 244 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 128, &k1), 245 SSH_ERR_KEY_LENGTH); 246 ASSERT_PTR_EQ(k1, NULL); 247 TEST_DONE(); 248 249 TEST_START("generate KEY_RSA too large modulus"); 250 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1 << 20, &k1), 251 SSH_ERR_KEY_LENGTH); 252 ASSERT_PTR_EQ(k1, NULL); 253 TEST_DONE(); 254 255 TEST_START("generate KEY_DSA wrong bits"); 256 ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 2048, &k1), 257 SSH_ERR_KEY_LENGTH); 258 ASSERT_PTR_EQ(k1, NULL); 259 sshkey_free(k1); 260 TEST_DONE(); 261 262 TEST_START("generate KEY_ECDSA wrong bits"); 263 ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 42, &k1), 264 SSH_ERR_KEY_LENGTH); 265 ASSERT_PTR_EQ(k1, NULL); 266 sshkey_free(k1); 267 TEST_DONE(); 268 269 TEST_START("generate KEY_RSA"); 270 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 767, &kr), 271 SSH_ERR_KEY_LENGTH); 272 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &kr), 0); 273 ASSERT_PTR_NE(kr, NULL); 274 ASSERT_PTR_NE(kr->rsa, NULL); 275 ASSERT_PTR_NE(kr->rsa->n, NULL); 276 ASSERT_PTR_NE(kr->rsa->e, NULL); 277 ASSERT_PTR_NE(kr->rsa->p, NULL); 278 ASSERT_INT_EQ(BN_num_bits(kr->rsa->n), 1024); 279 TEST_DONE(); 280 281 TEST_START("generate KEY_DSA"); 282 ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &kd), 0); 283 ASSERT_PTR_NE(kd, NULL); 284 ASSERT_PTR_NE(kd->dsa, NULL); 285 ASSERT_PTR_NE(kd->dsa->g, NULL); 286 ASSERT_PTR_NE(kd->dsa->priv_key, NULL); 287 TEST_DONE(); 288 289 TEST_START("generate KEY_ECDSA"); 290 ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &ke), 0); 291 ASSERT_PTR_NE(ke, NULL); 292 ASSERT_PTR_NE(ke->ecdsa, NULL); 293 ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL); 294 ASSERT_PTR_NE(EC_KEY_get0_private_key(ke->ecdsa), NULL); 295 TEST_DONE(); 296 297 TEST_START("generate KEY_ED25519"); 298 ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &kf), 0); 299 ASSERT_PTR_NE(kf, NULL); 300 ASSERT_INT_EQ(kf->type, KEY_ED25519); 301 ASSERT_PTR_NE(kf->ed25519_pk, NULL); 302 ASSERT_PTR_NE(kf->ed25519_sk, NULL); 303 TEST_DONE(); 304 305 TEST_START("demote KEY_RSA"); 306 ASSERT_INT_EQ(sshkey_demote(kr, &k1), 0); 307 ASSERT_PTR_NE(k1, NULL); 308 ASSERT_PTR_NE(kr, k1); 309 ASSERT_INT_EQ(k1->type, KEY_RSA); 310 ASSERT_PTR_NE(k1->rsa, NULL); 311 ASSERT_PTR_NE(k1->rsa->n, NULL); 312 ASSERT_PTR_NE(k1->rsa->e, NULL); 313 ASSERT_PTR_EQ(k1->rsa->p, NULL); 314 TEST_DONE(); 315 316 TEST_START("equal KEY_RSA/demoted KEY_RSA"); 317 ASSERT_INT_EQ(sshkey_equal(kr, k1), 1); 318 sshkey_free(k1); 319 TEST_DONE(); 320 321 TEST_START("demote KEY_DSA"); 322 ASSERT_INT_EQ(sshkey_demote(kd, &k1), 0); 323 ASSERT_PTR_NE(k1, NULL); 324 ASSERT_PTR_NE(kd, k1); 325 ASSERT_INT_EQ(k1->type, KEY_DSA); 326 ASSERT_PTR_NE(k1->dsa, NULL); 327 ASSERT_PTR_NE(k1->dsa->g, NULL); 328 ASSERT_PTR_EQ(k1->dsa->priv_key, NULL); 329 TEST_DONE(); 330 331 TEST_START("equal KEY_DSA/demoted KEY_DSA"); 332 ASSERT_INT_EQ(sshkey_equal(kd, k1), 1); 333 sshkey_free(k1); 334 TEST_DONE(); 335 336 TEST_START("demote KEY_ECDSA"); 337 ASSERT_INT_EQ(sshkey_demote(ke, &k1), 0); 338 ASSERT_PTR_NE(k1, NULL); 339 ASSERT_PTR_NE(ke, k1); 340 ASSERT_INT_EQ(k1->type, KEY_ECDSA); 341 ASSERT_PTR_NE(k1->ecdsa, NULL); 342 ASSERT_INT_EQ(k1->ecdsa_nid, ke->ecdsa_nid); 343 ASSERT_PTR_NE(EC_KEY_get0_public_key(ke->ecdsa), NULL); 344 ASSERT_PTR_EQ(EC_KEY_get0_private_key(k1->ecdsa), NULL); 345 TEST_DONE(); 346 347 TEST_START("equal KEY_ECDSA/demoted KEY_ECDSA"); 348 ASSERT_INT_EQ(sshkey_equal(ke, k1), 1); 349 sshkey_free(k1); 350 TEST_DONE(); 351 352 TEST_START("demote KEY_ED25519"); 353 ASSERT_INT_EQ(sshkey_demote(kf, &k1), 0); 354 ASSERT_PTR_NE(k1, NULL); 355 ASSERT_PTR_NE(kf, k1); 356 ASSERT_INT_EQ(k1->type, KEY_ED25519); 357 ASSERT_PTR_NE(k1->ed25519_pk, NULL); 358 ASSERT_PTR_EQ(k1->ed25519_sk, NULL); 359 TEST_DONE(); 360 361 TEST_START("equal KEY_ED25519/demoted KEY_ED25519"); 362 ASSERT_INT_EQ(sshkey_equal(kf, k1), 1); 363 sshkey_free(k1); 364 TEST_DONE(); 365 366 TEST_START("equal mismatched key types"); 367 ASSERT_INT_EQ(sshkey_equal(kd, kr), 0); 368 ASSERT_INT_EQ(sshkey_equal(kd, ke), 0); 369 ASSERT_INT_EQ(sshkey_equal(kr, ke), 0); 370 ASSERT_INT_EQ(sshkey_equal(ke, kf), 0); 371 ASSERT_INT_EQ(sshkey_equal(kd, kf), 0); 372 TEST_DONE(); 373 374 TEST_START("equal different keys"); 375 ASSERT_INT_EQ(sshkey_generate(KEY_RSA, 1024, &k1), 0); 376 ASSERT_INT_EQ(sshkey_equal(kr, k1), 0); 377 sshkey_free(k1); 378 ASSERT_INT_EQ(sshkey_generate(KEY_DSA, 1024, &k1), 0); 379 ASSERT_INT_EQ(sshkey_equal(kd, k1), 0); 380 sshkey_free(k1); 381 ASSERT_INT_EQ(sshkey_generate(KEY_ECDSA, 256, &k1), 0); 382 ASSERT_INT_EQ(sshkey_equal(ke, k1), 0); 383 sshkey_free(k1); 384 ASSERT_INT_EQ(sshkey_generate(KEY_ED25519, 256, &k1), 0); 385 ASSERT_INT_EQ(sshkey_equal(kf, k1), 0); 386 sshkey_free(k1); 387 TEST_DONE(); 388 389 sshkey_free(kr); 390 sshkey_free(kd); 391 sshkey_free(ke); 392 sshkey_free(kf); 393 394 TEST_START("certify key"); 395 ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_1.pub"), 396 &k1, NULL), 0); 397 k2 = get_private("ed25519_2"); 398 ASSERT_INT_EQ(sshkey_to_certified(k1), 0); 399 ASSERT_PTR_NE(k1->cert, NULL); 400 k1->cert->type = SSH2_CERT_TYPE_USER; 401 k1->cert->serial = 1234; 402 k1->cert->key_id = strdup("estragon"); 403 ASSERT_PTR_NE(k1->cert->key_id, NULL); 404 k1->cert->principals = calloc(4, sizeof(*k1->cert->principals)); 405 ASSERT_PTR_NE(k1->cert->principals, NULL); 406 k1->cert->principals[0] = strdup("estragon"); 407 k1->cert->principals[1] = strdup("vladimir"); 408 k1->cert->principals[2] = strdup("pozzo"); 409 k1->cert->principals[3] = strdup("lucky"); 410 ASSERT_PTR_NE(k1->cert->principals[0], NULL); 411 ASSERT_PTR_NE(k1->cert->principals[1], NULL); 412 ASSERT_PTR_NE(k1->cert->principals[2], NULL); 413 ASSERT_PTR_NE(k1->cert->principals[3], NULL); 414 k1->cert->valid_after = 0; 415 k1->cert->valid_before = (u_int64_t)-1; 416 k1->cert->critical = sshbuf_new(); 417 ASSERT_PTR_NE(k1->cert->critical, NULL); 418 k1->cert->extensions = sshbuf_new(); 419 ASSERT_PTR_NE(k1->cert->extensions, NULL); 420 put_opt(k1->cert->critical, "force-command", "/usr/bin/true"); 421 put_opt(k1->cert->critical, "source-address", "127.0.0.1"); 422 put_opt(k1->cert->extensions, "permit-X11-forwarding", NULL); 423 put_opt(k1->cert->extensions, "permit-agent-forwarding", NULL); 424 ASSERT_INT_EQ(sshkey_from_private(k2, &k1->cert->signature_key), 0); 425 ASSERT_INT_EQ(sshkey_certify(k1, k2, NULL), 0); 426 b = sshbuf_new(); 427 ASSERT_PTR_NE(b, NULL); 428 ASSERT_INT_EQ(sshkey_putb(k1, b), 0); 429 ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k3), 0); 430 431 sshkey_free(k1); 432 sshkey_free(k2); 433 sshkey_free(k3); 434 sshbuf_reset(b); 435 TEST_DONE(); 436 437 TEST_START("sign and verify RSA"); 438 k1 = get_private("rsa_1"); 439 ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2, 440 NULL), 0); 441 signature_tests(k1, k2, "ssh-rsa"); 442 sshkey_free(k1); 443 sshkey_free(k2); 444 TEST_DONE(); 445 446 TEST_START("sign and verify RSA-SHA256"); 447 k1 = get_private("rsa_1"); 448 ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2, 449 NULL), 0); 450 signature_tests(k1, k2, "rsa-sha2-256"); 451 sshkey_free(k1); 452 sshkey_free(k2); 453 TEST_DONE(); 454 455 TEST_START("sign and verify RSA-SHA512"); 456 k1 = get_private("rsa_1"); 457 ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_2.pub"), &k2, 458 NULL), 0); 459 signature_tests(k1, k2, "rsa-sha2-512"); 460 sshkey_free(k1); 461 sshkey_free(k2); 462 TEST_DONE(); 463 464 TEST_START("sign and verify DSA"); 465 k1 = get_private("dsa_1"); 466 ASSERT_INT_EQ(sshkey_load_public(test_data_file("dsa_2.pub"), &k2, 467 NULL), 0); 468 signature_tests(k1, k2, NULL); 469 sshkey_free(k1); 470 sshkey_free(k2); 471 TEST_DONE(); 472 473 TEST_START("sign and verify ECDSA"); 474 k1 = get_private("ecdsa_1"); 475 ASSERT_INT_EQ(sshkey_load_public(test_data_file("ecdsa_2.pub"), &k2, 476 NULL), 0); 477 signature_tests(k1, k2, NULL); 478 sshkey_free(k1); 479 sshkey_free(k2); 480 TEST_DONE(); 481 482 TEST_START("sign and verify ED25519"); 483 k1 = get_private("ed25519_1"); 484 ASSERT_INT_EQ(sshkey_load_public(test_data_file("ed25519_2.pub"), &k2, 485 NULL), 0); 486 signature_tests(k1, k2, NULL); 487 sshkey_free(k1); 488 sshkey_free(k2); 489 TEST_DONE(); 490 491 TEST_START("nested certificate"); 492 ASSERT_INT_EQ(sshkey_load_cert(test_data_file("rsa_1"), &k1), 0); 493 ASSERT_INT_EQ(sshkey_load_public(test_data_file("rsa_1.pub"), &k2, 494 NULL), 0); 495 k3 = get_private("rsa_1"); 496 build_cert(b, k2, "ssh-rsa-cert-v01@openssh.com", k3, k1, NULL); 497 ASSERT_INT_EQ(sshkey_from_blob(sshbuf_ptr(b), sshbuf_len(b), &k4), 498 SSH_ERR_KEY_CERT_INVALID_SIGN_KEY); 499 ASSERT_PTR_EQ(k4, NULL); 500 sshkey_free(k1); 501 sshkey_free(k2); 502 sshkey_free(k3); 503 sshbuf_free(b); 504 TEST_DONE(); 505 506 } 507