1 /* $OpenBSD: ssh-rsa.c,v 1.84 2026/02/14 00:18:34 jsg Exp $ */ 2 /* 3 * Copyright (c) 2000, 2003 Markus Friedl <markus@openbsd.org> 4 * 5 * Permission to use, copy, modify, and distribute this software for any 6 * purpose with or without fee is hereby granted, provided that the above 7 * copyright notice and this permission notice appear in all copies. 8 * 9 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 10 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 11 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 12 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 13 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 14 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 15 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 16 */ 17 18 #include "includes.h" 19 20 #ifdef WITH_OPENSSL 21 #include "openbsd-compat/openssl-compat.h" 22 23 #include <sys/types.h> 24 25 #include <openssl/bn.h> 26 #include <openssl/evp.h> 27 28 #include <stdarg.h> 29 #include <string.h> 30 31 #include "sshbuf.h" 32 #include "ssherr.h" 33 #define SSHKEY_INTERNAL 34 #include "sshkey.h" 35 #include "digest.h" 36 37 static u_int 38 ssh_rsa_size(const struct sshkey *k) 39 { 40 if (k->pkey == NULL) 41 return 0; 42 return EVP_PKEY_bits(k->pkey); 43 } 44 45 static int 46 ssh_rsa_alloc(struct sshkey *k) 47 { 48 if ((k->pkey = EVP_PKEY_new()) == NULL) 49 return SSH_ERR_ALLOC_FAIL; 50 return 0; 51 } 52 53 static void 54 ssh_rsa_cleanup(struct sshkey *k) 55 { 56 EVP_PKEY_free(k->pkey); 57 k->pkey = NULL; 58 } 59 60 static int 61 ssh_rsa_equal(const struct sshkey *a, const struct sshkey *b) 62 { 63 if (a->pkey == NULL || b->pkey == NULL) 64 return 0; 65 return EVP_PKEY_cmp(a->pkey, b->pkey) == 1; 66 } 67 68 static int 69 ssh_rsa_serialize_public(const struct sshkey *key, struct sshbuf *b, 70 enum sshkey_serialize_rep opts) 71 { 72 int r; 73 const BIGNUM *rsa_n, *rsa_e; 74 const RSA *rsa; 75 76 if (key->pkey == NULL) 77 return SSH_ERR_INVALID_ARGUMENT; 78 if ((rsa = EVP_PKEY_get0_RSA(key->pkey)) == NULL) 79 return SSH_ERR_LIBCRYPTO_ERROR; 80 81 RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL); 82 if ((r = sshbuf_put_bignum2(b, rsa_e)) != 0 || 83 (r = sshbuf_put_bignum2(b, rsa_n)) != 0) 84 return r; 85 86 return 0; 87 } 88 89 static int 90 ssh_rsa_serialize_private(const struct sshkey *key, struct sshbuf *b, 91 enum sshkey_serialize_rep opts) 92 { 93 int r; 94 const BIGNUM *rsa_n, *rsa_e, *rsa_d, *rsa_iqmp, *rsa_p, *rsa_q; 95 const RSA *rsa; 96 97 if ((rsa = EVP_PKEY_get0_RSA(key->pkey)) == NULL) 98 return SSH_ERR_LIBCRYPTO_ERROR; 99 RSA_get0_key(rsa, &rsa_n, &rsa_e, &rsa_d); 100 RSA_get0_factors(rsa, &rsa_p, &rsa_q); 101 RSA_get0_crt_params(rsa, NULL, NULL, &rsa_iqmp); 102 103 if (!sshkey_is_cert(key)) { 104 /* Note: can't reuse ssh_rsa_serialize_public: e, n vs. n, e */ 105 if ((r = sshbuf_put_bignum2(b, rsa_n)) != 0 || 106 (r = sshbuf_put_bignum2(b, rsa_e)) != 0) 107 return r; 108 } 109 if ((r = sshbuf_put_bignum2(b, rsa_d)) != 0 || 110 (r = sshbuf_put_bignum2(b, rsa_iqmp)) != 0 || 111 (r = sshbuf_put_bignum2(b, rsa_p)) != 0 || 112 (r = sshbuf_put_bignum2(b, rsa_q)) != 0) 113 return r; 114 115 return 0; 116 } 117 118 static int 119 ssh_rsa_generate(struct sshkey *k, int bits) 120 { 121 EVP_PKEY_CTX *ctx = NULL; 122 EVP_PKEY *res = NULL; 123 124 int ret = SSH_ERR_INTERNAL_ERROR; 125 126 if (bits < SSH_RSA_MINIMUM_MODULUS_SIZE || 127 bits > SSHBUF_MAX_BIGNUM * 8) 128 return SSH_ERR_KEY_LENGTH; 129 130 if ((ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA, NULL)) == NULL) { 131 ret = SSH_ERR_ALLOC_FAIL; 132 goto out; 133 } 134 if (EVP_PKEY_keygen_init(ctx) <= 0) { 135 ret = SSH_ERR_LIBCRYPTO_ERROR; 136 goto out; 137 } 138 if (EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) <= 0) { 139 ret = SSH_ERR_KEY_LENGTH; 140 goto out; 141 } 142 if (EVP_PKEY_keygen(ctx, &res) <= 0 || res == NULL) { 143 ret = SSH_ERR_LIBCRYPTO_ERROR; 144 goto out; 145 } 146 /* success */ 147 k->pkey = res; 148 ret = 0; 149 out: 150 EVP_PKEY_CTX_free(ctx); 151 return ret; 152 } 153 154 static int 155 ssh_rsa_copy_public(const struct sshkey *from, struct sshkey *to) 156 { 157 const BIGNUM *rsa_n, *rsa_e; 158 BIGNUM *rsa_n_dup = NULL, *rsa_e_dup = NULL; 159 int r = SSH_ERR_INTERNAL_ERROR; 160 const RSA *rsa_from; 161 RSA *rsa_to = NULL; 162 163 if ((rsa_from = EVP_PKEY_get0_RSA(from->pkey)) == NULL || 164 (rsa_to = RSA_new()) == NULL) 165 return SSH_ERR_LIBCRYPTO_ERROR; 166 167 RSA_get0_key(rsa_from, &rsa_n, &rsa_e, NULL); 168 if ((rsa_n_dup = BN_dup(rsa_n)) == NULL || 169 (rsa_e_dup = BN_dup(rsa_e)) == NULL) { 170 r = SSH_ERR_ALLOC_FAIL; 171 goto out; 172 } 173 if (!RSA_set0_key(rsa_to, rsa_n_dup, rsa_e_dup, NULL)) { 174 r = SSH_ERR_LIBCRYPTO_ERROR; 175 goto out; 176 } 177 rsa_n_dup = rsa_e_dup = NULL; /* transferred */ 178 179 if (EVP_PKEY_set1_RSA(to->pkey, rsa_to) != 1) { 180 r = SSH_ERR_LIBCRYPTO_ERROR; 181 goto out; 182 } 183 /* success */ 184 r = 0; 185 out: 186 RSA_free(rsa_to); 187 BN_clear_free(rsa_n_dup); 188 BN_clear_free(rsa_e_dup); 189 return r; 190 } 191 192 static int 193 ssh_rsa_deserialize_public(const char *ktype, struct sshbuf *b, 194 struct sshkey *key) 195 { 196 int ret = SSH_ERR_INTERNAL_ERROR; 197 BIGNUM *rsa_n = NULL, *rsa_e = NULL; 198 RSA *rsa = NULL; 199 200 if ((rsa = RSA_new()) == NULL) 201 return SSH_ERR_LIBCRYPTO_ERROR; 202 203 if (sshbuf_get_bignum2(b, &rsa_e) != 0 || 204 sshbuf_get_bignum2(b, &rsa_n) != 0) { 205 ret = SSH_ERR_INVALID_FORMAT; 206 goto out; 207 } 208 if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL)) { 209 ret = SSH_ERR_LIBCRYPTO_ERROR; 210 goto out; 211 } 212 rsa_n = rsa_e = NULL; /* transferred */ 213 if (EVP_PKEY_set1_RSA(key->pkey, rsa) != 1) { 214 ret = SSH_ERR_LIBCRYPTO_ERROR; 215 goto out; 216 } 217 if ((ret = sshkey_check_rsa_length(key, 0)) != 0) 218 goto out; 219 #ifdef DEBUG_PK 220 RSA_print_fp(stderr, rsa, 8); 221 #endif 222 /* success */ 223 ret = 0; 224 out: 225 RSA_free(rsa); 226 BN_clear_free(rsa_n); 227 BN_clear_free(rsa_e); 228 return ret; 229 } 230 231 static int 232 ssh_rsa_deserialize_private(const char *ktype, struct sshbuf *b, 233 struct sshkey *key) 234 { 235 int r; 236 BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL; 237 BIGNUM *rsa_iqmp = NULL, *rsa_p = NULL, *rsa_q = NULL; 238 BIGNUM *rsa_dmp1 = NULL, *rsa_dmq1 = NULL; 239 RSA *rsa = NULL; 240 241 if (sshkey_is_cert(key)) { 242 /* sshkey_private_deserialize already has pubkey from cert */ 243 if ((rsa = EVP_PKEY_get1_RSA(key->pkey)) == NULL) { 244 r = SSH_ERR_LIBCRYPTO_ERROR; 245 goto out; 246 } 247 } else { 248 if ((rsa = RSA_new()) == NULL) { 249 r = SSH_ERR_LIBCRYPTO_ERROR; 250 goto out; 251 } 252 /* Note: can't reuse ssh_rsa_deserialize_public: e,n vs. n,e */ 253 if ((r = sshbuf_get_bignum2(b, &rsa_n)) != 0 || 254 (r = sshbuf_get_bignum2(b, &rsa_e)) != 0) 255 goto out; 256 if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL)) { 257 r = SSH_ERR_LIBCRYPTO_ERROR; 258 goto out; 259 } 260 rsa_n = rsa_e = NULL; /* transferred */ 261 } 262 if ((r = sshbuf_get_bignum2(b, &rsa_d)) != 0 || 263 (r = sshbuf_get_bignum2(b, &rsa_iqmp)) != 0 || 264 (r = sshbuf_get_bignum2(b, &rsa_p)) != 0 || 265 (r = sshbuf_get_bignum2(b, &rsa_q)) != 0) 266 goto out; 267 if ((r = ssh_rsa_complete_crt_parameters(rsa_d, rsa_p, rsa_q, 268 rsa_iqmp, &rsa_dmp1, &rsa_dmq1)) != 0) 269 goto out; 270 if (!RSA_set0_key(rsa, NULL, NULL, rsa_d)) { 271 r = SSH_ERR_LIBCRYPTO_ERROR; 272 goto out; 273 } 274 rsa_d = NULL; /* transferred */ 275 if (!RSA_set0_factors(rsa, rsa_p, rsa_q)) { 276 r = SSH_ERR_LIBCRYPTO_ERROR; 277 goto out; 278 } 279 rsa_p = rsa_q = NULL; /* transferred */ 280 if (!RSA_set0_crt_params(rsa, rsa_dmp1, rsa_dmq1, rsa_iqmp)) { 281 r = SSH_ERR_LIBCRYPTO_ERROR; 282 goto out; 283 } 284 rsa_dmp1 = rsa_dmq1 = rsa_iqmp = NULL; 285 if (RSA_blinding_on(rsa, NULL) != 1) { 286 r = SSH_ERR_LIBCRYPTO_ERROR; 287 goto out; 288 } 289 if (EVP_PKEY_set1_RSA(key->pkey, rsa) != 1) { 290 r = SSH_ERR_LIBCRYPTO_ERROR; 291 goto out; 292 } 293 if ((r = sshkey_check_rsa_length(key, 0)) != 0) 294 goto out; 295 /* success */ 296 r = 0; 297 out: 298 RSA_free(rsa); 299 BN_clear_free(rsa_n); 300 BN_clear_free(rsa_e); 301 BN_clear_free(rsa_d); 302 BN_clear_free(rsa_p); 303 BN_clear_free(rsa_q); 304 BN_clear_free(rsa_iqmp); 305 BN_clear_free(rsa_dmp1); 306 BN_clear_free(rsa_dmq1); 307 return r; 308 } 309 310 const char * 311 ssh_rsa_hash_alg_ident(int hash_alg) 312 { 313 switch (hash_alg) { 314 case SSH_DIGEST_SHA1: 315 return "ssh-rsa"; 316 case SSH_DIGEST_SHA256: 317 return "rsa-sha2-256"; 318 case SSH_DIGEST_SHA512: 319 return "rsa-sha2-512"; 320 } 321 return NULL; 322 } 323 324 /* 325 * Returns the hash algorithm ID for a given algorithm identifier as used 326 * inside the signature blob, 327 */ 328 static int 329 rsa_hash_id_from_ident(const char *ident) 330 { 331 if (strcmp(ident, "ssh-rsa") == 0) 332 return SSH_DIGEST_SHA1; 333 if (strcmp(ident, "rsa-sha2-256") == 0) 334 return SSH_DIGEST_SHA256; 335 if (strcmp(ident, "rsa-sha2-512") == 0) 336 return SSH_DIGEST_SHA512; 337 return -1; 338 } 339 340 /* 341 * Return the hash algorithm ID for the specified key name. This includes 342 * all the cases of rsa_hash_id_from_ident() but also the certificate key 343 * types. 344 */ 345 int 346 ssh_rsa_hash_id_from_keyname(const char *alg) 347 { 348 int r; 349 350 if ((r = rsa_hash_id_from_ident(alg)) != -1) 351 return r; 352 if (strcmp(alg, "ssh-rsa-cert-v01@openssh.com") == 0) 353 return SSH_DIGEST_SHA1; 354 if (strcmp(alg, "rsa-sha2-256-cert-v01@openssh.com") == 0) 355 return SSH_DIGEST_SHA256; 356 if (strcmp(alg, "rsa-sha2-512-cert-v01@openssh.com") == 0) 357 return SSH_DIGEST_SHA512; 358 return -1; 359 } 360 361 int 362 ssh_rsa_complete_crt_parameters(const BIGNUM *rsa_d, const BIGNUM *rsa_p, 363 const BIGNUM *rsa_q, const BIGNUM *rsa_iqmp, BIGNUM **rsa_dmp1, 364 BIGNUM **rsa_dmq1) 365 { 366 BIGNUM *aux = NULL, *d_consttime = NULL; 367 BN_CTX *ctx = NULL; 368 int r; 369 370 *rsa_dmq1 = *rsa_dmp1 = NULL; 371 if ((ctx = BN_CTX_new()) == NULL) 372 return SSH_ERR_ALLOC_FAIL; 373 if ((aux = BN_new()) == NULL || 374 (*rsa_dmq1 = BN_new()) == NULL || 375 (*rsa_dmp1 = BN_new()) == NULL) 376 return SSH_ERR_ALLOC_FAIL; 377 if ((d_consttime = BN_dup(rsa_d)) == NULL) { 378 r = SSH_ERR_ALLOC_FAIL; 379 goto out; 380 } 381 BN_set_flags(aux, BN_FLG_CONSTTIME); 382 BN_set_flags(d_consttime, BN_FLG_CONSTTIME); 383 384 if ((BN_sub(aux, rsa_q, BN_value_one()) == 0) || 385 (BN_mod(*rsa_dmq1, d_consttime, aux, ctx) == 0) || 386 (BN_sub(aux, rsa_p, BN_value_one()) == 0) || 387 (BN_mod(*rsa_dmp1, d_consttime, aux, ctx) == 0)) { 388 r = SSH_ERR_LIBCRYPTO_ERROR; 389 goto out; 390 } 391 /* success */ 392 r = 0; 393 out: 394 BN_clear_free(aux); 395 BN_clear_free(d_consttime); 396 BN_CTX_free(ctx); 397 return r; 398 } 399 400 /* RSASSA-PKCS1-v1_5 (PKCS #1 v2.0 signature) with SHA1 */ 401 static int 402 ssh_rsa_sign(struct sshkey *key, 403 u_char **sigp, size_t *lenp, 404 const u_char *data, size_t datalen, 405 const char *alg, const char *sk_provider, const char *sk_pin, u_int compat) 406 { 407 u_char *sig = NULL; 408 size_t diff, len = 0; 409 int slen = 0; 410 int hash_alg, ret = SSH_ERR_INTERNAL_ERROR; 411 412 if (lenp != NULL) 413 *lenp = 0; 414 if (sigp != NULL) 415 *sigp = NULL; 416 417 if (alg == NULL || strlen(alg) == 0) 418 hash_alg = SSH_DIGEST_SHA1; 419 else 420 hash_alg = ssh_rsa_hash_id_from_keyname(alg); 421 422 if (key == NULL || key->pkey == NULL || hash_alg == -1 || 423 sshkey_type_plain(key->type) != KEY_RSA) 424 return SSH_ERR_INVALID_ARGUMENT; 425 slen = EVP_PKEY_size(key->pkey); 426 if (slen <= 0 || slen > SSHBUF_MAX_BIGNUM) 427 return SSH_ERR_INVALID_ARGUMENT; 428 if (EVP_PKEY_bits(key->pkey) < SSH_RSA_MINIMUM_MODULUS_SIZE) 429 return SSH_ERR_KEY_LENGTH; 430 431 if ((ret = sshkey_pkey_digest_sign(key->pkey, hash_alg, &sig, &len, 432 data, datalen)) < 0) 433 goto out; 434 if (len < (size_t)slen) { 435 diff = slen - len; 436 memmove(sig + diff, sig, len); 437 explicit_bzero(sig, diff); 438 } else if (len > (size_t)slen) { 439 ret = SSH_ERR_INTERNAL_ERROR; 440 goto out; 441 } 442 if ((ret = ssh_rsa_encode_store_sig(hash_alg, sig, slen, 443 sigp, lenp)) != 0) 444 goto out; 445 446 /* success */ 447 ret = 0; 448 out: 449 freezero(sig, slen); 450 return ret; 451 } 452 453 int 454 ssh_rsa_encode_store_sig(int hash_alg, const u_char *sig, size_t slen, 455 u_char **sigp, size_t *lenp) 456 { 457 struct sshbuf *b = NULL; 458 int ret = SSH_ERR_INTERNAL_ERROR; 459 size_t len; 460 461 if (lenp != NULL) 462 *lenp = 0; 463 if (sigp != NULL) 464 *sigp = NULL; 465 466 /* Encode signature */ 467 if ((b = sshbuf_new()) == NULL) { 468 ret = SSH_ERR_ALLOC_FAIL; 469 goto out; 470 } 471 if ((ret = sshbuf_put_cstring(b, 472 ssh_rsa_hash_alg_ident(hash_alg))) != 0 || 473 (ret = sshbuf_put_string(b, sig, slen)) != 0) 474 goto out; 475 len = sshbuf_len(b); 476 477 /* Store signature */ 478 if (sigp != NULL) { 479 if ((*sigp = malloc(len)) == NULL) { 480 ret = SSH_ERR_ALLOC_FAIL; 481 goto out; 482 } 483 memcpy(*sigp, sshbuf_ptr(b), len); 484 } 485 if (lenp != NULL) 486 *lenp = len; 487 ret = 0; 488 out: 489 sshbuf_free(b); 490 return ret; 491 } 492 493 static int 494 ssh_rsa_verify(const struct sshkey *key, 495 const u_char *sig, size_t siglen, 496 const u_char *data, size_t dlen, const char *alg, u_int compat, 497 struct sshkey_sig_details **detailsp) 498 { 499 char *sigtype = NULL; 500 int hash_alg, want_alg, ret = SSH_ERR_INTERNAL_ERROR; 501 size_t len = 0, diff, modlen, rsasize; 502 struct sshbuf *b = NULL; 503 u_char digest[SSH_DIGEST_MAX_LENGTH], *osigblob, *sigblob = NULL; 504 505 if (key == NULL || key->pkey == NULL || 506 sshkey_type_plain(key->type) != KEY_RSA || 507 sig == NULL || siglen == 0) 508 return SSH_ERR_INVALID_ARGUMENT; 509 if (EVP_PKEY_bits(key->pkey) < SSH_RSA_MINIMUM_MODULUS_SIZE) 510 return SSH_ERR_KEY_LENGTH; 511 512 if ((b = sshbuf_from(sig, siglen)) == NULL) 513 return SSH_ERR_ALLOC_FAIL; 514 if (sshbuf_get_cstring(b, &sigtype, NULL) != 0) { 515 ret = SSH_ERR_INVALID_FORMAT; 516 goto out; 517 } 518 if ((hash_alg = rsa_hash_id_from_ident(sigtype)) == -1) { 519 ret = SSH_ERR_KEY_TYPE_MISMATCH; 520 goto out; 521 } 522 /* 523 * Allow ssh-rsa-cert-v01 certs to generate SHA2 signatures for 524 * legacy reasons, but otherwise the signature type should match. 525 */ 526 if (alg != NULL && strcmp(alg, "ssh-rsa-cert-v01@openssh.com") != 0) { 527 if ((want_alg = ssh_rsa_hash_id_from_keyname(alg)) == -1) { 528 ret = SSH_ERR_INVALID_ARGUMENT; 529 goto out; 530 } 531 if (hash_alg != want_alg) { 532 ret = SSH_ERR_SIGNATURE_INVALID; 533 goto out; 534 } 535 } 536 if (sshbuf_get_string(b, &sigblob, &len) != 0) { 537 ret = SSH_ERR_INVALID_FORMAT; 538 goto out; 539 } 540 if (sshbuf_len(b) != 0) { 541 ret = SSH_ERR_UNEXPECTED_TRAILING_DATA; 542 goto out; 543 } 544 /* RSA_verify expects a signature of RSA_size */ 545 modlen = EVP_PKEY_size(key->pkey); 546 if (len > modlen) { 547 ret = SSH_ERR_KEY_BITS_MISMATCH; 548 goto out; 549 } else if (len < modlen) { 550 diff = modlen - len; 551 osigblob = sigblob; 552 if ((sigblob = realloc(sigblob, modlen)) == NULL) { 553 sigblob = osigblob; /* put it back for clear/free */ 554 ret = SSH_ERR_ALLOC_FAIL; 555 goto out; 556 } 557 memmove(sigblob + diff, sigblob, len); 558 explicit_bzero(sigblob, diff); 559 len = modlen; 560 } 561 562 rsasize = EVP_PKEY_size(key->pkey); 563 if (rsasize <= 0 || rsasize > SSHBUF_MAX_BIGNUM || 564 len == 0 || len > rsasize) { 565 ret = SSH_ERR_INVALID_ARGUMENT; 566 goto out; 567 } 568 ret = sshkey_pkey_digest_verify(key->pkey, hash_alg, data, dlen, 569 sigblob, len); 570 571 out: 572 freezero(sigblob, len); 573 free(sigtype); 574 sshbuf_free(b); 575 explicit_bzero(digest, sizeof(digest)); 576 return ret; 577 } 578 579 static const struct sshkey_impl_funcs sshkey_rsa_funcs = { 580 /* .size = */ ssh_rsa_size, 581 /* .alloc = */ ssh_rsa_alloc, 582 /* .cleanup = */ ssh_rsa_cleanup, 583 /* .equal = */ ssh_rsa_equal, 584 /* .ssh_serialize_public = */ ssh_rsa_serialize_public, 585 /* .ssh_deserialize_public = */ ssh_rsa_deserialize_public, 586 /* .ssh_serialize_private = */ ssh_rsa_serialize_private, 587 /* .ssh_deserialize_private = */ ssh_rsa_deserialize_private, 588 /* .generate = */ ssh_rsa_generate, 589 /* .copy_public = */ ssh_rsa_copy_public, 590 /* .sign = */ ssh_rsa_sign, 591 /* .verify = */ ssh_rsa_verify, 592 }; 593 594 const struct sshkey_impl sshkey_rsa_impl = { 595 /* .name = */ "ssh-rsa", 596 /* .shortname = */ "RSA", 597 /* .sigalg = */ NULL, 598 /* .type = */ KEY_RSA, 599 /* .nid = */ 0, 600 /* .cert = */ 0, 601 /* .sigonly = */ 0, 602 /* .keybits = */ 0, 603 /* .funcs = */ &sshkey_rsa_funcs, 604 }; 605 606 const struct sshkey_impl sshkey_rsa_cert_impl = { 607 /* .name = */ "ssh-rsa-cert-v01@openssh.com", 608 /* .shortname = */ "RSA-CERT", 609 /* .sigalg = */ NULL, 610 /* .type = */ KEY_RSA_CERT, 611 /* .nid = */ 0, 612 /* .cert = */ 1, 613 /* .sigonly = */ 0, 614 /* .keybits = */ 0, 615 /* .funcs = */ &sshkey_rsa_funcs, 616 }; 617 618 /* SHA2 signature algorithms */ 619 620 const struct sshkey_impl sshkey_rsa_sha256_impl = { 621 /* .name = */ "rsa-sha2-256", 622 /* .shortname = */ "RSA", 623 /* .sigalg = */ NULL, 624 /* .type = */ KEY_RSA, 625 /* .nid = */ 0, 626 /* .cert = */ 0, 627 /* .sigonly = */ 1, 628 /* .keybits = */ 0, 629 /* .funcs = */ &sshkey_rsa_funcs, 630 }; 631 632 const struct sshkey_impl sshkey_rsa_sha512_impl = { 633 /* .name = */ "rsa-sha2-512", 634 /* .shortname = */ "RSA", 635 /* .sigalg = */ NULL, 636 /* .type = */ KEY_RSA, 637 /* .nid = */ 0, 638 /* .cert = */ 0, 639 /* .sigonly = */ 1, 640 /* .keybits = */ 0, 641 /* .funcs = */ &sshkey_rsa_funcs, 642 }; 643 644 const struct sshkey_impl sshkey_rsa_sha256_cert_impl = { 645 /* .name = */ "rsa-sha2-256-cert-v01@openssh.com", 646 /* .shortname = */ "RSA-CERT", 647 /* .sigalg = */ "rsa-sha2-256", 648 /* .type = */ KEY_RSA_CERT, 649 /* .nid = */ 0, 650 /* .cert = */ 1, 651 /* .sigonly = */ 1, 652 /* .keybits = */ 0, 653 /* .funcs = */ &sshkey_rsa_funcs, 654 }; 655 656 const struct sshkey_impl sshkey_rsa_sha512_cert_impl = { 657 /* .name = */ "rsa-sha2-512-cert-v01@openssh.com", 658 /* .shortname = */ "RSA-CERT", 659 /* .sigalg = */ "rsa-sha2-512", 660 /* .type = */ KEY_RSA_CERT, 661 /* .nid = */ 0, 662 /* .cert = */ 1, 663 /* .sigonly = */ 1, 664 /* .keybits = */ 0, 665 /* .funcs = */ &sshkey_rsa_funcs, 666 }; 667 #endif /* WITH_OPENSSL */ 668