1 /* $NetBSD: ssh-rsa.c,v 1.22 2026/04/08 18:58:41 christos Exp $ */ 2 /* $OpenBSD: ssh-rsa.c,v 1.84 2026/02/14 00:18:34 jsg Exp $ */ 3 4 /* 5 * Copyright (c) 2000, 2003 Markus Friedl <markus (at) openbsd.org> 6 * 7 * Permission to use, copy, modify, and distribute this software for any 8 * purpose with or without fee is hereby granted, provided that the above 9 * copyright notice and this permission notice appear in all copies. 10 * 11 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 12 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 13 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR 14 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 15 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN 16 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF 17 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 18 */ 19 20 #include "includes.h" 21 __RCSID("$NetBSD: ssh-rsa.c,v 1.22 2026/04/08 18:58:41 christos Exp $"); 22 #include <sys/types.h> 23 24 #include <openssl/bn.h> 25 #include <openssl/evp.h> 26 27 #include <stdarg.h> 28 #include <string.h> 29 30 #include "sshbuf.h" 31 #include "ssherr.h" 32 #define SSHKEY_INTERNAL 33 #include "sshkey.h" 34 #include "digest.h" 35 36 static u_int 37 ssh_rsa_size(const struct sshkey *k) 38 { 39 if (k->pkey == NULL) 40 return 0; 41 return EVP_PKEY_bits(k->pkey); 42 } 43 44 static int 45 ssh_rsa_alloc(struct sshkey *k) 46 { 47 if ((k->pkey = EVP_PKEY_new()) == NULL) 48 return SSH_ERR_ALLOC_FAIL; 49 return 0; 50 } 51 52 static void 53 ssh_rsa_cleanup(struct sshkey *k) 54 { 55 EVP_PKEY_free(k->pkey); 56 k->pkey = NULL; 57 } 58 59 static int 60 ssh_rsa_equal(const struct sshkey *a, const struct sshkey *b) 61 { 62 if (a->pkey == NULL || b->pkey == NULL) 63 return 0; 64 return EVP_PKEY_cmp(a->pkey, b->pkey) == 1; 65 } 66 67 static int 68 ssh_rsa_serialize_public(const struct sshkey *key, struct sshbuf *b, 69 enum sshkey_serialize_rep opts) 70 { 71 int r; 72 const BIGNUM *rsa_n, *rsa_e; 73 const RSA *rsa; 74 75 if (key->pkey == NULL) 76 return SSH_ERR_INVALID_ARGUMENT; 77 if ((rsa = EVP_PKEY_get0_RSA(key->pkey)) == NULL) 78 return SSH_ERR_LIBCRYPTO_ERROR; 79 80 RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL); 81 if ((r = sshbuf_put_bignum2(b, rsa_e)) != 0 || 82 (r = sshbuf_put_bignum2(b, rsa_n)) != 0) 83 return r; 84 85 return 0; 86 } 87 88 static int 89 ssh_rsa_serialize_private(const struct sshkey *key, struct sshbuf *b, 90 enum sshkey_serialize_rep opts) 91 { 92 int r; 93 const BIGNUM *rsa_n, *rsa_e, *rsa_d, *rsa_iqmp, *rsa_p, *rsa_q; 94 const RSA *rsa; 95 96 if ((rsa = EVP_PKEY_get0_RSA(key->pkey)) == NULL) 97 return SSH_ERR_LIBCRYPTO_ERROR; 98 RSA_get0_key(rsa, &rsa_n, &rsa_e, &rsa_d); 99 RSA_get0_factors(rsa, &rsa_p, &rsa_q); 100 RSA_get0_crt_params(rsa, NULL, NULL, &rsa_iqmp); 101 102 if (!sshkey_is_cert(key)) { 103 /* Note: can't reuse ssh_rsa_serialize_public: e, n vs. n, e */ 104 if ((r = sshbuf_put_bignum2(b, rsa_n)) != 0 || 105 (r = sshbuf_put_bignum2(b, rsa_e)) != 0) 106 return r; 107 } 108 if ((r = sshbuf_put_bignum2(b, rsa_d)) != 0 || 109 (r = sshbuf_put_bignum2(b, rsa_iqmp)) != 0 || 110 (r = sshbuf_put_bignum2(b, rsa_p)) != 0 || 111 (r = sshbuf_put_bignum2(b, rsa_q)) != 0) 112 return r; 113 114 return 0; 115 } 116 117 static int 118 ssh_rsa_generate(struct sshkey *k, int bits) 119 { 120 EVP_PKEY_CTX *ctx = NULL; 121 EVP_PKEY *res = NULL; 122 123 int ret = SSH_ERR_INTERNAL_ERROR; 124 125 if (bits < SSH_RSA_MINIMUM_MODULUS_SIZE || 126 bits > SSHBUF_MAX_BIGNUM * 8) 127 return SSH_ERR_KEY_LENGTH; 128 129 if ((ctx = EVP_PKEY_CTX_new_id(EVP_PKEY_RSA, NULL)) == NULL) { 130 ret = SSH_ERR_ALLOC_FAIL; 131 goto out; 132 } 133 if (EVP_PKEY_keygen_init(ctx) <= 0) { 134 ret = SSH_ERR_LIBCRYPTO_ERROR; 135 goto out; 136 } 137 if (EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, bits) <= 0) { 138 ret = SSH_ERR_KEY_LENGTH; 139 goto out; 140 } 141 if (EVP_PKEY_keygen(ctx, &res) <= 0 || res == NULL) { 142 ret = SSH_ERR_LIBCRYPTO_ERROR; 143 goto out; 144 } 145 /* success */ 146 k->pkey = res; 147 ret = 0; 148 out: 149 EVP_PKEY_CTX_free(ctx); 150 return ret; 151 } 152 153 static int 154 ssh_rsa_copy_public(const struct sshkey *from, struct sshkey *to) 155 { 156 const BIGNUM *rsa_n, *rsa_e; 157 BIGNUM *rsa_n_dup = NULL, *rsa_e_dup = NULL; 158 int r = SSH_ERR_INTERNAL_ERROR; 159 const RSA *rsa_from; 160 RSA *rsa_to = NULL; 161 162 if ((rsa_from = EVP_PKEY_get0_RSA(from->pkey)) == NULL || 163 (rsa_to = RSA_new()) == NULL) 164 return SSH_ERR_LIBCRYPTO_ERROR; 165 166 RSA_get0_key(rsa_from, &rsa_n, &rsa_e, NULL); 167 if ((rsa_n_dup = BN_dup(rsa_n)) == NULL || 168 (rsa_e_dup = BN_dup(rsa_e)) == NULL) { 169 r = SSH_ERR_ALLOC_FAIL; 170 goto out; 171 } 172 if (!RSA_set0_key(rsa_to, rsa_n_dup, rsa_e_dup, NULL)) { 173 r = SSH_ERR_LIBCRYPTO_ERROR; 174 goto out; 175 } 176 rsa_n_dup = rsa_e_dup = NULL; /* transferred */ 177 178 if (EVP_PKEY_set1_RSA(to->pkey, rsa_to) != 1) { 179 r = SSH_ERR_LIBCRYPTO_ERROR; 180 goto out; 181 } 182 /* success */ 183 r = 0; 184 out: 185 RSA_free(rsa_to); 186 BN_clear_free(rsa_n_dup); 187 BN_clear_free(rsa_e_dup); 188 return r; 189 } 190 191 static int 192 ssh_rsa_deserialize_public(const char *ktype, struct sshbuf *b, 193 struct sshkey *key) 194 { 195 int ret = SSH_ERR_INTERNAL_ERROR; 196 BIGNUM *rsa_n = NULL, *rsa_e = NULL; 197 RSA *rsa = NULL; 198 199 if ((rsa = RSA_new()) == NULL) 200 return SSH_ERR_LIBCRYPTO_ERROR; 201 202 if (sshbuf_get_bignum2(b, &rsa_e) != 0 || 203 sshbuf_get_bignum2(b, &rsa_n) != 0) { 204 ret = SSH_ERR_INVALID_FORMAT; 205 goto out; 206 } 207 if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL)) { 208 ret = SSH_ERR_LIBCRYPTO_ERROR; 209 goto out; 210 } 211 rsa_n = rsa_e = NULL; /* transferred */ 212 if (EVP_PKEY_set1_RSA(key->pkey, rsa) != 1) { 213 ret = SSH_ERR_LIBCRYPTO_ERROR; 214 goto out; 215 } 216 if ((ret = sshkey_check_rsa_length(key, 0)) != 0) 217 goto out; 218 #ifdef DEBUG_PK 219 RSA_print_fp(stderr, rsa, 8); 220 #endif 221 /* success */ 222 ret = 0; 223 out: 224 RSA_free(rsa); 225 BN_clear_free(rsa_n); 226 BN_clear_free(rsa_e); 227 return ret; 228 } 229 230 static int 231 ssh_rsa_deserialize_private(const char *ktype, struct sshbuf *b, 232 struct sshkey *key) 233 { 234 int r; 235 BIGNUM *rsa_n = NULL, *rsa_e = NULL, *rsa_d = NULL; 236 BIGNUM *rsa_iqmp = NULL, *rsa_p = NULL, *rsa_q = NULL; 237 BIGNUM *rsa_dmp1 = NULL, *rsa_dmq1 = NULL; 238 RSA *rsa = NULL; 239 240 if (sshkey_is_cert(key)) { 241 /* sshkey_private_deserialize already has pubkey from cert */ 242 if ((rsa = EVP_PKEY_get1_RSA(key->pkey)) == NULL) { 243 r = SSH_ERR_LIBCRYPTO_ERROR; 244 goto out; 245 } 246 } else { 247 if ((rsa = RSA_new()) == NULL) { 248 r = SSH_ERR_LIBCRYPTO_ERROR; 249 goto out; 250 } 251 /* Note: can't reuse ssh_rsa_deserialize_public: e,n vs. n,e */ 252 if ((r = sshbuf_get_bignum2(b, &rsa_n)) != 0 || 253 (r = sshbuf_get_bignum2(b, &rsa_e)) != 0) 254 goto out; 255 if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL)) { 256 r = SSH_ERR_LIBCRYPTO_ERROR; 257 goto out; 258 } 259 rsa_n = rsa_e = NULL; /* transferred */ 260 } 261 if ((r = sshbuf_get_bignum2(b, &rsa_d)) != 0 || 262 (r = sshbuf_get_bignum2(b, &rsa_iqmp)) != 0 || 263 (r = sshbuf_get_bignum2(b, &rsa_p)) != 0 || 264 (r = sshbuf_get_bignum2(b, &rsa_q)) != 0) 265 goto out; 266 if ((r = ssh_rsa_complete_crt_parameters(rsa_d, rsa_p, rsa_q, 267 rsa_iqmp, &rsa_dmp1, &rsa_dmq1)) != 0) 268 goto out; 269 if (!RSA_set0_key(rsa, NULL, NULL, rsa_d)) { 270 r = SSH_ERR_LIBCRYPTO_ERROR; 271 goto out; 272 } 273 rsa_d = NULL; /* transferred */ 274 if (!RSA_set0_factors(rsa, rsa_p, rsa_q)) { 275 r = SSH_ERR_LIBCRYPTO_ERROR; 276 goto out; 277 } 278 rsa_p = rsa_q = NULL; /* transferred */ 279 if (!RSA_set0_crt_params(rsa, rsa_dmp1, rsa_dmq1, rsa_iqmp)) { 280 r = SSH_ERR_LIBCRYPTO_ERROR; 281 goto out; 282 } 283 rsa_dmp1 = rsa_dmq1 = rsa_iqmp = NULL; 284 if (RSA_blinding_on(rsa, NULL) != 1) { 285 r = SSH_ERR_LIBCRYPTO_ERROR; 286 goto out; 287 } 288 if (EVP_PKEY_set1_RSA(key->pkey, rsa) != 1) { 289 r = SSH_ERR_LIBCRYPTO_ERROR; 290 goto out; 291 } 292 if ((r = sshkey_check_rsa_length(key, 0)) != 0) 293 goto out; 294 /* success */ 295 r = 0; 296 out: 297 RSA_free(rsa); 298 BN_clear_free(rsa_n); 299 BN_clear_free(rsa_e); 300 BN_clear_free(rsa_d); 301 BN_clear_free(rsa_p); 302 BN_clear_free(rsa_q); 303 BN_clear_free(rsa_iqmp); 304 BN_clear_free(rsa_dmp1); 305 BN_clear_free(rsa_dmq1); 306 return r; 307 } 308 309 const char * 310 ssh_rsa_hash_alg_ident(int hash_alg) 311 { 312 switch (hash_alg) { 313 case SSH_DIGEST_SHA1: 314 return "ssh-rsa"; 315 case SSH_DIGEST_SHA256: 316 return "rsa-sha2-256"; 317 case SSH_DIGEST_SHA512: 318 return "rsa-sha2-512"; 319 } 320 return NULL; 321 } 322 323 /* 324 * Returns the hash algorithm ID for a given algorithm identifier as used 325 * inside the signature blob, 326 */ 327 static int 328 rsa_hash_id_from_ident(const char *ident) 329 { 330 if (strcmp(ident, "ssh-rsa") == 0) 331 return SSH_DIGEST_SHA1; 332 if (strcmp(ident, "rsa-sha2-256") == 0) 333 return SSH_DIGEST_SHA256; 334 if (strcmp(ident, "rsa-sha2-512") == 0) 335 return SSH_DIGEST_SHA512; 336 return -1; 337 } 338 339 /* 340 * Return the hash algorithm ID for the specified key name. This includes 341 * all the cases of rsa_hash_id_from_ident() but also the certificate key 342 * types. 343 */ 344 int 345 ssh_rsa_hash_id_from_keyname(const char *alg) 346 { 347 int r; 348 349 if ((r = rsa_hash_id_from_ident(alg)) != -1) 350 return r; 351 if (strcmp(alg, "ssh-rsa-cert-v01 (at) openssh.com") == 0) 352 return SSH_DIGEST_SHA1; 353 if (strcmp(alg, "rsa-sha2-256-cert-v01 (at) openssh.com") == 0) 354 return SSH_DIGEST_SHA256; 355 if (strcmp(alg, "rsa-sha2-512-cert-v01 (at) openssh.com") == 0) 356 return SSH_DIGEST_SHA512; 357 return -1; 358 } 359 360 int 361 ssh_rsa_complete_crt_parameters(const BIGNUM *rsa_d, const BIGNUM *rsa_p, 362 const BIGNUM *rsa_q, const BIGNUM *rsa_iqmp, BIGNUM **rsa_dmp1, 363 BIGNUM **rsa_dmq1) 364 { 365 BIGNUM *aux = NULL, *d_consttime = NULL; 366 BN_CTX *ctx = NULL; 367 int r; 368 369 *rsa_dmq1 = *rsa_dmp1 = NULL; 370 if ((ctx = BN_CTX_new()) == NULL) 371 return SSH_ERR_ALLOC_FAIL; 372 if ((aux = BN_new()) == NULL || 373 (*rsa_dmq1 = BN_new()) == NULL || 374 (*rsa_dmp1 = BN_new()) == NULL) 375 return SSH_ERR_ALLOC_FAIL; 376 if ((d_consttime = BN_dup(rsa_d)) == NULL) { 377 r = SSH_ERR_ALLOC_FAIL; 378 goto out; 379 } 380 BN_set_flags(aux, BN_FLG_CONSTTIME); 381 BN_set_flags(d_consttime, BN_FLG_CONSTTIME); 382 383 if ((BN_sub(aux, rsa_q, BN_value_one()) == 0) || 384 (BN_mod(*rsa_dmq1, d_consttime, aux, ctx) == 0) || 385 (BN_sub(aux, rsa_p, BN_value_one()) == 0) || 386 (BN_mod(*rsa_dmp1, d_consttime, aux, ctx) == 0)) { 387 r = SSH_ERR_LIBCRYPTO_ERROR; 388 goto out; 389 } 390 /* success */ 391 r = 0; 392 out: 393 BN_clear_free(aux); 394 BN_clear_free(d_consttime); 395 BN_CTX_free(ctx); 396 return r; 397 } 398 399 /* RSASSA-PKCS1-v1_5 (PKCS #1 v2.0 signature) with SHA1 */ 400 static int 401 ssh_rsa_sign(struct sshkey *key, 402 u_char **sigp, size_t *lenp, 403 const u_char *data, size_t datalen, 404 const char *alg, const char *sk_provider, const char *sk_pin, u_int compat) 405 { 406 u_char *sig = NULL; 407 size_t diff, len = 0; 408 int slen = 0; 409 int hash_alg, ret = SSH_ERR_INTERNAL_ERROR; 410 411 if (lenp != NULL) 412 *lenp = 0; 413 if (sigp != NULL) 414 *sigp = NULL; 415 416 if (alg == NULL || strlen(alg) == 0) 417 hash_alg = SSH_DIGEST_SHA1; 418 else 419 hash_alg = ssh_rsa_hash_id_from_keyname(alg); 420 421 if (key == NULL || key->pkey == NULL || hash_alg == -1 || 422 sshkey_type_plain(key->type) != KEY_RSA) 423 return SSH_ERR_INVALID_ARGUMENT; 424 slen = EVP_PKEY_size(key->pkey); 425 if (slen <= 0 || slen > SSHBUF_MAX_BIGNUM) 426 return SSH_ERR_INVALID_ARGUMENT; 427 if (EVP_PKEY_bits(key->pkey) < SSH_RSA_MINIMUM_MODULUS_SIZE) 428 return SSH_ERR_KEY_LENGTH; 429 430 if ((ret = sshkey_pkey_digest_sign(key->pkey, hash_alg, &sig, &len, 431 data, datalen)) < 0) 432 goto out; 433 if (len < (size_t)slen) { 434 diff = slen - len; 435 memmove(sig + diff, sig, len); 436 explicit_bzero(sig, diff); 437 } else if (len > (size_t)slen) { 438 ret = SSH_ERR_INTERNAL_ERROR; 439 goto out; 440 } 441 if ((ret = ssh_rsa_encode_store_sig(hash_alg, sig, slen, 442 sigp, lenp)) != 0) 443 goto out; 444 445 /* success */ 446 ret = 0; 447 out: 448 freezero(sig, slen); 449 return ret; 450 } 451 452 int 453 ssh_rsa_encode_store_sig(int hash_alg, const u_char *sig, size_t slen, 454 u_char **sigp, size_t *lenp) 455 { 456 struct sshbuf *b = NULL; 457 int ret = SSH_ERR_INTERNAL_ERROR; 458 size_t len; 459 460 if (lenp != NULL) 461 *lenp = 0; 462 if (sigp != NULL) 463 *sigp = NULL; 464 465 /* Encode signature */ 466 if ((b = sshbuf_new()) == NULL) { 467 ret = SSH_ERR_ALLOC_FAIL; 468 goto out; 469 } 470 if ((ret = sshbuf_put_cstring(b, 471 ssh_rsa_hash_alg_ident(hash_alg))) != 0 || 472 (ret = sshbuf_put_string(b, sig, slen)) != 0) 473 goto out; 474 len = sshbuf_len(b); 475 476 /* Store signature */ 477 if (sigp != NULL) { 478 if ((*sigp = malloc(len)) == NULL) { 479 ret = SSH_ERR_ALLOC_FAIL; 480 goto out; 481 } 482 memcpy(*sigp, sshbuf_ptr(b), len); 483 } 484 if (lenp != NULL) 485 *lenp = len; 486 ret = 0; 487 out: 488 sshbuf_free(b); 489 return ret; 490 } 491 492 static int 493 ssh_rsa_verify(const struct sshkey *key, 494 const u_char *sig, size_t siglen, 495 const u_char *data, size_t dlen, const char *alg, u_int compat, 496 struct sshkey_sig_details **detailsp) 497 { 498 char *sigtype = NULL; 499 int hash_alg, want_alg, ret = SSH_ERR_INTERNAL_ERROR; 500 size_t len = 0, diff, modlen, rsasize; 501 struct sshbuf *b = NULL; 502 u_char digest[SSH_DIGEST_MAX_LENGTH], *osigblob, *sigblob = NULL; 503 504 if (key == NULL || key->pkey == NULL || 505 sshkey_type_plain(key->type) != KEY_RSA || 506 sig == NULL || siglen == 0) 507 return SSH_ERR_INVALID_ARGUMENT; 508 if (EVP_PKEY_bits(key->pkey) < SSH_RSA_MINIMUM_MODULUS_SIZE) 509 return SSH_ERR_KEY_LENGTH; 510 511 if ((b = sshbuf_from(sig, siglen)) == NULL) 512 return SSH_ERR_ALLOC_FAIL; 513 if (sshbuf_get_cstring(b, &sigtype, NULL) != 0) { 514 ret = SSH_ERR_INVALID_FORMAT; 515 goto out; 516 } 517 if ((hash_alg = rsa_hash_id_from_ident(sigtype)) == -1) { 518 ret = SSH_ERR_KEY_TYPE_MISMATCH; 519 goto out; 520 } 521 /* 522 * Allow ssh-rsa-cert-v01 certs to generate SHA2 signatures for 523 * legacy reasons, but otherwise the signature type should match. 524 */ 525 if (alg != NULL && strcmp(alg, "ssh-rsa-cert-v01 (at) openssh.com") != 0) { 526 if ((want_alg = ssh_rsa_hash_id_from_keyname(alg)) == -1) { 527 ret = SSH_ERR_INVALID_ARGUMENT; 528 goto out; 529 } 530 if (hash_alg != want_alg) { 531 ret = SSH_ERR_SIGNATURE_INVALID; 532 goto out; 533 } 534 } 535 if (sshbuf_get_string(b, &sigblob, &len) != 0) { 536 ret = SSH_ERR_INVALID_FORMAT; 537 goto out; 538 } 539 if (sshbuf_len(b) != 0) { 540 ret = SSH_ERR_UNEXPECTED_TRAILING_DATA; 541 goto out; 542 } 543 /* RSA_verify expects a signature of RSA_size */ 544 modlen = EVP_PKEY_size(key->pkey); 545 if (len > modlen) { 546 ret = SSH_ERR_KEY_BITS_MISMATCH; 547 goto out; 548 } else if (len < modlen) { 549 diff = modlen - len; 550 osigblob = sigblob; 551 if ((sigblob = realloc(sigblob, modlen)) == NULL) { 552 sigblob = osigblob; /* put it back for clear/free */ 553 ret = SSH_ERR_ALLOC_FAIL; 554 goto out; 555 } 556 memmove(sigblob + diff, sigblob, len); 557 explicit_bzero(sigblob, diff); 558 len = modlen; 559 } 560 561 rsasize = EVP_PKEY_size(key->pkey); 562 if (rsasize <= 0 || rsasize > SSHBUF_MAX_BIGNUM || 563 len == 0 || len > rsasize) { 564 ret = SSH_ERR_INVALID_ARGUMENT; 565 goto out; 566 } 567 ret = sshkey_pkey_digest_verify(key->pkey, hash_alg, data, dlen, 568 sigblob, len); 569 570 out: 571 freezero(sigblob, len); 572 free(sigtype); 573 sshbuf_free(b); 574 explicit_bzero(digest, sizeof(digest)); 575 return ret; 576 } 577 578 static const struct sshkey_impl_funcs sshkey_rsa_funcs = { 579 /* .size = */ ssh_rsa_size, 580 /* .alloc = */ ssh_rsa_alloc, 581 /* .cleanup = */ ssh_rsa_cleanup, 582 /* .equal = */ ssh_rsa_equal, 583 /* .ssh_serialize_public = */ ssh_rsa_serialize_public, 584 /* .ssh_deserialize_public = */ ssh_rsa_deserialize_public, 585 /* .ssh_serialize_private = */ ssh_rsa_serialize_private, 586 /* .ssh_deserialize_private = */ ssh_rsa_deserialize_private, 587 /* .generate = */ ssh_rsa_generate, 588 /* .copy_public = */ ssh_rsa_copy_public, 589 /* .sign = */ ssh_rsa_sign, 590 /* .verify = */ ssh_rsa_verify, 591 }; 592 593 const struct sshkey_impl sshkey_rsa_impl = { 594 /* .name = */ "ssh-rsa", 595 /* .shortname = */ "RSA", 596 /* .sigalg = */ NULL, 597 /* .type = */ KEY_RSA, 598 /* .nid = */ 0, 599 /* .cert = */ 0, 600 /* .sigonly = */ 0, 601 /* .keybits = */ 0, 602 /* .funcs = */ &sshkey_rsa_funcs, 603 }; 604 605 const struct sshkey_impl sshkey_rsa_cert_impl = { 606 /* .name = */ "ssh-rsa-cert-v01 (at) openssh.com", 607 /* .shortname = */ "RSA-CERT", 608 /* .sigalg = */ NULL, 609 /* .type = */ KEY_RSA_CERT, 610 /* .nid = */ 0, 611 /* .cert = */ 1, 612 /* .sigonly = */ 0, 613 /* .keybits = */ 0, 614 /* .funcs = */ &sshkey_rsa_funcs, 615 }; 616 617 /* SHA2 signature algorithms */ 618 619 const struct sshkey_impl sshkey_rsa_sha256_impl = { 620 /* .name = */ "rsa-sha2-256", 621 /* .shortname = */ "RSA", 622 /* .sigalg = */ NULL, 623 /* .type = */ KEY_RSA, 624 /* .nid = */ 0, 625 /* .cert = */ 0, 626 /* .sigonly = */ 1, 627 /* .keybits = */ 0, 628 /* .funcs = */ &sshkey_rsa_funcs, 629 }; 630 631 const struct sshkey_impl sshkey_rsa_sha512_impl = { 632 /* .name = */ "rsa-sha2-512", 633 /* .shortname = */ "RSA", 634 /* .sigalg = */ NULL, 635 /* .type = */ KEY_RSA, 636 /* .nid = */ 0, 637 /* .cert = */ 0, 638 /* .sigonly = */ 1, 639 /* .keybits = */ 0, 640 /* .funcs = */ &sshkey_rsa_funcs, 641 }; 642 643 const struct sshkey_impl sshkey_rsa_sha256_cert_impl = { 644 /* .name = */ "rsa-sha2-256-cert-v01 (at) openssh.com", 645 /* .shortname = */ "RSA-CERT", 646 /* .sigalg = */ "rsa-sha2-256", 647 /* .type = */ KEY_RSA_CERT, 648 /* .nid = */ 0, 649 /* .cert = */ 1, 650 /* .sigonly = */ 1, 651 /* .keybits = */ 0, 652 /* .funcs = */ &sshkey_rsa_funcs, 653 }; 654 655 const struct sshkey_impl sshkey_rsa_sha512_cert_impl = { 656 /* .name = */ "rsa-sha2-512-cert-v01 (at) openssh.com", 657 /* .shortname = */ "RSA-CERT", 658 /* .sigalg = */ "rsa-sha2-512", 659 /* .type = */ KEY_RSA_CERT, 660 /* .nid = */ 0, 661 /* .cert = */ 1, 662 /* .sigonly = */ 1, 663 /* .keybits = */ 0, 664 /* .funcs = */ &sshkey_rsa_funcs, 665 }; 666
Indexes created Wed Jun 17 00:25:26 UTC 2026