djm@openbsd.org | 6329764 | 2019-01-21 00:47:34 +0000 | [diff] [blame] | 1 | /* $OpenBSD: ssh-pkcs11.c,v 1.37 2019/01/21 00:47:34 djm Exp $ */ |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 2 | /* |
| 3 | * Copyright (c) 2010 Markus Friedl. All rights reserved. |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 4 | * Copyright (c) 2014 Pedro Martelletto. All rights reserved. |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 5 | * |
| 6 | * Permission to use, copy, modify, and distribute this software for any |
| 7 | * purpose with or without fee is hereby granted, provided that the above |
| 8 | * copyright notice and this permission notice appear in all copies. |
| 9 | * |
| 10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES |
| 11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF |
| 12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR |
| 13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES |
| 14 | * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN |
| 15 | * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF |
| 16 | * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 17 | */ |
| 18 | |
Damien Miller | 8ad0fbd | 2010-02-12 09:49:06 +1100 | [diff] [blame] | 19 | #include "includes.h" |
| 20 | |
Damien Miller | dfa4156 | 2010-02-12 10:06:28 +1100 | [diff] [blame] | 21 | #ifdef ENABLE_PKCS11 |
| 22 | |
Damien Miller | 8ad0fbd | 2010-02-12 09:49:06 +1100 | [diff] [blame] | 23 | #ifdef HAVE_SYS_TIME_H |
| 24 | # include <sys/time.h> |
| 25 | #endif |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 26 | |
| 27 | #include <sys/types.h> |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 28 | #include <stdarg.h> |
| 29 | #include <stdio.h> |
| 30 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 31 | #include <ctype.h> |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 32 | #include <string.h> |
| 33 | #include <dlfcn.h> |
| 34 | |
Damien Miller | 8ad0fbd | 2010-02-12 09:49:06 +1100 | [diff] [blame] | 35 | #include "openbsd-compat/sys-queue.h" |
Damien Miller | 48f54b9 | 2018-09-13 12:13:50 +1000 | [diff] [blame] | 36 | #include "openbsd-compat/openssl-compat.h" |
Damien Miller | 8ad0fbd | 2010-02-12 09:49:06 +1100 | [diff] [blame] | 37 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 38 | #include <openssl/ecdsa.h> |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 39 | #include <openssl/x509.h> |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 40 | #include <openssl/err.h> |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 41 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 42 | #define CRYPTOKI_COMPAT |
| 43 | #include "pkcs11.h" |
| 44 | |
| 45 | #include "log.h" |
| 46 | #include "misc.h" |
djm@openbsd.org | 1129dcf | 2015-01-15 09:40:00 +0000 | [diff] [blame] | 47 | #include "sshkey.h" |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 48 | #include "ssh-pkcs11.h" |
| 49 | #include "xmalloc.h" |
| 50 | |
| 51 | struct pkcs11_slotinfo { |
| 52 | CK_TOKEN_INFO token; |
| 53 | CK_SESSION_HANDLE session; |
| 54 | int logged_in; |
| 55 | }; |
| 56 | |
| 57 | struct pkcs11_provider { |
| 58 | char *name; |
| 59 | void *handle; |
| 60 | CK_FUNCTION_LIST *function_list; |
| 61 | CK_INFO info; |
| 62 | CK_ULONG nslots; |
| 63 | CK_SLOT_ID *slotlist; |
| 64 | struct pkcs11_slotinfo *slotinfo; |
| 65 | int valid; |
| 66 | int refcount; |
| 67 | TAILQ_ENTRY(pkcs11_provider) next; |
| 68 | }; |
| 69 | |
| 70 | TAILQ_HEAD(, pkcs11_provider) pkcs11_providers; |
| 71 | |
| 72 | struct pkcs11_key { |
| 73 | struct pkcs11_provider *provider; |
| 74 | CK_ULONG slotidx; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 75 | char *keyid; |
| 76 | int keyid_len; |
| 77 | }; |
| 78 | |
| 79 | int pkcs11_interactive = 0; |
| 80 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 81 | static void |
| 82 | ossl_error(const char *msg) |
| 83 | { |
djm@openbsd.org | 6529409 | 2019-01-20 23:11:11 +0000 | [diff] [blame] | 84 | unsigned long e; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 85 | |
djm@openbsd.org | 6529409 | 2019-01-20 23:11:11 +0000 | [diff] [blame] | 86 | while ((e = ERR_get_error()) != 0) |
| 87 | error("%s: %s: %.100s", __func__, msg, |
| 88 | ERR_error_string(e, NULL)); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 89 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 90 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 91 | int |
| 92 | pkcs11_init(int interactive) |
| 93 | { |
| 94 | pkcs11_interactive = interactive; |
| 95 | TAILQ_INIT(&pkcs11_providers); |
| 96 | return (0); |
| 97 | } |
| 98 | |
| 99 | /* |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 100 | * finalize a provider shared library, it's no longer usable. |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 101 | * however, there might still be keys referencing this provider, |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 102 | * so the actual freeing of memory is handled by pkcs11_provider_unref(). |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 103 | * this is called when a provider gets unregistered. |
| 104 | */ |
| 105 | static void |
| 106 | pkcs11_provider_finalize(struct pkcs11_provider *p) |
| 107 | { |
| 108 | CK_RV rv; |
| 109 | CK_ULONG i; |
| 110 | |
| 111 | debug("pkcs11_provider_finalize: %p refcount %d valid %d", |
| 112 | p, p->refcount, p->valid); |
| 113 | if (!p->valid) |
| 114 | return; |
| 115 | for (i = 0; i < p->nslots; i++) { |
| 116 | if (p->slotinfo[i].session && |
| 117 | (rv = p->function_list->C_CloseSession( |
| 118 | p->slotinfo[i].session)) != CKR_OK) |
| 119 | error("C_CloseSession failed: %lu", rv); |
| 120 | } |
| 121 | if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK) |
| 122 | error("C_Finalize failed: %lu", rv); |
| 123 | p->valid = 0; |
| 124 | p->function_list = NULL; |
| 125 | dlclose(p->handle); |
| 126 | } |
| 127 | |
| 128 | /* |
| 129 | * remove a reference to the provider. |
| 130 | * called when a key gets destroyed or when the provider is unregistered. |
| 131 | */ |
| 132 | static void |
| 133 | pkcs11_provider_unref(struct pkcs11_provider *p) |
| 134 | { |
| 135 | debug("pkcs11_provider_unref: %p refcount %d", p, p->refcount); |
| 136 | if (--p->refcount <= 0) { |
| 137 | if (p->valid) |
| 138 | error("pkcs11_provider_unref: %p still valid", p); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 139 | free(p->name); |
Darren Tucker | a627d42 | 2013-06-02 07:31:17 +1000 | [diff] [blame] | 140 | free(p->slotlist); |
| 141 | free(p->slotinfo); |
| 142 | free(p); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 143 | } |
| 144 | } |
| 145 | |
| 146 | /* unregister all providers, keys might still point to the providers */ |
| 147 | void |
| 148 | pkcs11_terminate(void) |
| 149 | { |
| 150 | struct pkcs11_provider *p; |
| 151 | |
| 152 | while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) { |
| 153 | TAILQ_REMOVE(&pkcs11_providers, p, next); |
| 154 | pkcs11_provider_finalize(p); |
| 155 | pkcs11_provider_unref(p); |
| 156 | } |
| 157 | } |
| 158 | |
| 159 | /* lookup provider by name */ |
| 160 | static struct pkcs11_provider * |
| 161 | pkcs11_provider_lookup(char *provider_id) |
| 162 | { |
| 163 | struct pkcs11_provider *p; |
| 164 | |
| 165 | TAILQ_FOREACH(p, &pkcs11_providers, next) { |
| 166 | debug("check %p %s", p, p->name); |
| 167 | if (!strcmp(provider_id, p->name)) |
| 168 | return (p); |
| 169 | } |
| 170 | return (NULL); |
| 171 | } |
| 172 | |
| 173 | /* unregister provider by name */ |
| 174 | int |
| 175 | pkcs11_del_provider(char *provider_id) |
| 176 | { |
| 177 | struct pkcs11_provider *p; |
| 178 | |
| 179 | if ((p = pkcs11_provider_lookup(provider_id)) != NULL) { |
| 180 | TAILQ_REMOVE(&pkcs11_providers, p, next); |
| 181 | pkcs11_provider_finalize(p); |
| 182 | pkcs11_provider_unref(p); |
| 183 | return (0); |
| 184 | } |
| 185 | return (-1); |
| 186 | } |
| 187 | |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 188 | /* release a wrapped object */ |
| 189 | static void |
| 190 | pkcs11_k11_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx, |
| 191 | long argl, void *argp) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 192 | { |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 193 | struct pkcs11_key *k11 = ptr; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 194 | |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 195 | debug("%s: parent %p ptr %p idx %d", __func__, parent, ptr, idx); |
| 196 | if (k11 == NULL) |
| 197 | return; |
| 198 | if (k11->provider) |
| 199 | pkcs11_provider_unref(k11->provider); |
| 200 | free(k11->keyid); |
| 201 | free(k11); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 202 | } |
| 203 | |
Damien Miller | 031c910 | 2010-04-16 15:54:44 +1000 | [diff] [blame] | 204 | /* find a single 'obj' for given attributes */ |
| 205 | static int |
| 206 | pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr, |
| 207 | CK_ULONG nattr, CK_OBJECT_HANDLE *obj) |
| 208 | { |
| 209 | CK_FUNCTION_LIST *f; |
| 210 | CK_SESSION_HANDLE session; |
| 211 | CK_ULONG nfound = 0; |
| 212 | CK_RV rv; |
| 213 | int ret = -1; |
| 214 | |
| 215 | f = p->function_list; |
| 216 | session = p->slotinfo[slotidx].session; |
| 217 | if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) { |
| 218 | error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv); |
| 219 | return (-1); |
| 220 | } |
| 221 | if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK || |
| 222 | nfound != 1) { |
| 223 | debug("C_FindObjects failed (nfound %lu nattr %lu): %lu", |
| 224 | nfound, nattr, rv); |
| 225 | } else |
| 226 | ret = 0; |
| 227 | if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK) |
| 228 | error("C_FindObjectsFinal failed: %lu", rv); |
| 229 | return (ret); |
| 230 | } |
| 231 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 232 | static int |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 233 | pkcs11_get_key(struct pkcs11_key *k11, CK_MECHANISM_TYPE mech_type) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 234 | { |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 235 | struct pkcs11_slotinfo *si; |
| 236 | CK_FUNCTION_LIST *f; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 237 | CK_OBJECT_HANDLE obj; |
| 238 | CK_RV rv; |
| 239 | CK_OBJECT_CLASS private_key_class; |
| 240 | CK_BBOOL true_val; |
| 241 | CK_MECHANISM mech; |
| 242 | CK_ATTRIBUTE key_filter[3]; |
djm@openbsd.org | a71ba58 | 2015-05-27 05:15:02 +0000 | [diff] [blame] | 243 | char *pin = NULL, prompt[1024]; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 244 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 245 | if (!k11->provider || !k11->provider->valid) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 246 | error("no pkcs11 (valid) provider found"); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 247 | return (-1); |
| 248 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 249 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 250 | f = k11->provider->function_list; |
| 251 | si = &k11->provider->slotinfo[k11->slotidx]; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 252 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 253 | if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) { |
| 254 | if (!pkcs11_interactive) { |
djm@openbsd.org | a71ba58 | 2015-05-27 05:15:02 +0000 | [diff] [blame] | 255 | error("need pin entry%s", (si->token.flags & |
| 256 | CKF_PROTECTED_AUTHENTICATION_PATH) ? |
| 257 | " on reader keypad" : ""); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 258 | return (-1); |
| 259 | } |
djm@openbsd.org | a71ba58 | 2015-05-27 05:15:02 +0000 | [diff] [blame] | 260 | if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) |
| 261 | verbose("Deferring PIN entry to reader keypad."); |
| 262 | else { |
| 263 | snprintf(prompt, sizeof(prompt), |
| 264 | "Enter PIN for '%s': ", si->token.label); |
| 265 | pin = read_passphrase(prompt, RP_ALLOW_EOF); |
| 266 | if (pin == NULL) |
| 267 | return (-1); /* bail out */ |
| 268 | } |
| 269 | rv = f->C_Login(si->session, CKU_USER, (u_char *)pin, |
| 270 | (pin != NULL) ? strlen(pin) : 0); |
| 271 | if (pin != NULL) { |
| 272 | explicit_bzero(pin, strlen(pin)); |
Darren Tucker | a627d42 | 2013-06-02 07:31:17 +1000 | [diff] [blame] | 273 | free(pin); |
djm@openbsd.org | a71ba58 | 2015-05-27 05:15:02 +0000 | [diff] [blame] | 274 | } |
| 275 | if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) { |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 276 | error("C_Login failed: %lu", rv); |
| 277 | return (-1); |
| 278 | } |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 279 | si->logged_in = 1; |
| 280 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 281 | |
| 282 | memset(&key_filter, 0, sizeof(key_filter)); |
| 283 | private_key_class = CKO_PRIVATE_KEY; |
| 284 | key_filter[0].type = CKA_CLASS; |
| 285 | key_filter[0].pValue = &private_key_class; |
| 286 | key_filter[0].ulValueLen = sizeof(private_key_class); |
| 287 | |
| 288 | key_filter[1].type = CKA_ID; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 289 | key_filter[1].pValue = k11->keyid; |
| 290 | key_filter[1].ulValueLen = k11->keyid_len; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 291 | |
| 292 | true_val = CK_TRUE; |
| 293 | key_filter[2].type = CKA_SIGN; |
| 294 | key_filter[2].pValue = &true_val; |
| 295 | key_filter[2].ulValueLen = sizeof(true_val); |
| 296 | |
Damien Miller | 031c910 | 2010-04-16 15:54:44 +1000 | [diff] [blame] | 297 | /* try to find object w/CKA_SIGN first, retry w/o */ |
| 298 | if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 && |
| 299 | pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) { |
| 300 | error("cannot find private key"); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 301 | return (-1); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 302 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 303 | |
| 304 | memset(&mech, 0, sizeof(mech)); |
| 305 | mech.mechanism = mech_type; |
| 306 | mech.pParameter = NULL_PTR; |
| 307 | mech.ulParameterLen = 0; |
| 308 | |
| 309 | if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) { |
| 310 | error("C_SignInit failed: %lu", rv); |
| 311 | return (-1); |
| 312 | } |
| 313 | |
| 314 | return (0); |
| 315 | } |
| 316 | |
| 317 | /* openssl callback doing the actual signing operation */ |
| 318 | static int |
| 319 | pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa, |
| 320 | int padding) |
| 321 | { |
| 322 | struct pkcs11_key *k11; |
| 323 | struct pkcs11_slotinfo *si; |
| 324 | CK_FUNCTION_LIST *f; |
| 325 | CK_ULONG tlen = 0; |
| 326 | CK_RV rv; |
| 327 | int rval = -1; |
| 328 | |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 329 | if ((k11 = RSA_get_ex_data(rsa, 0)) == NULL) { |
| 330 | error("RSA_get_ex_data failed for rsa %p", rsa); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 331 | return (-1); |
| 332 | } |
| 333 | |
| 334 | if (pkcs11_get_key(k11, CKM_RSA_PKCS) == -1) { |
| 335 | error("pkcs11_get_key failed"); |
| 336 | return (-1); |
| 337 | } |
| 338 | |
| 339 | f = k11->provider->function_list; |
| 340 | si = &k11->provider->slotinfo[k11->slotidx]; |
| 341 | tlen = RSA_size(rsa); |
| 342 | |
| 343 | /* XXX handle CKR_BUFFER_TOO_SMALL */ |
| 344 | rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen); |
| 345 | if (rv == CKR_OK) |
| 346 | rval = tlen; |
| 347 | else |
| 348 | error("C_Sign failed: %lu", rv); |
| 349 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 350 | return (rval); |
| 351 | } |
| 352 | |
| 353 | static int |
| 354 | pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa, |
| 355 | int padding) |
| 356 | { |
| 357 | return (-1); |
| 358 | } |
| 359 | |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 360 | static RSA_METHOD *rsa_method; |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 361 | static int rsa_idx = 0; |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 362 | |
| 363 | static int |
| 364 | pkcs11_rsa_start_wrapper(void) |
| 365 | { |
| 366 | if (rsa_method != NULL) |
| 367 | return (0); |
| 368 | rsa_method = RSA_meth_dup(RSA_get_default_method()); |
| 369 | if (rsa_method == NULL) |
| 370 | return (-1); |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 371 | rsa_idx = RSA_get_ex_new_index(0, "ssh-pkcs11-rsa", |
| 372 | NULL, NULL, pkcs11_k11_free); |
| 373 | if (rsa_idx == -1) |
| 374 | return (-1); |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 375 | if (!RSA_meth_set1_name(rsa_method, "pkcs11") || |
| 376 | !RSA_meth_set_priv_enc(rsa_method, pkcs11_rsa_private_encrypt) || |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 377 | !RSA_meth_set_priv_dec(rsa_method, pkcs11_rsa_private_decrypt)) { |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 378 | error("%s: setup pkcs11 method failed", __func__); |
| 379 | return (-1); |
| 380 | } |
| 381 | return (0); |
| 382 | } |
| 383 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 384 | /* redirect private key operations for rsa key to pkcs11 token */ |
| 385 | static int |
| 386 | pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx, |
| 387 | CK_ATTRIBUTE *keyid_attrib, RSA *rsa) |
| 388 | { |
| 389 | struct pkcs11_key *k11; |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 390 | |
| 391 | if (pkcs11_rsa_start_wrapper() == -1) |
| 392 | return (-1); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 393 | |
| 394 | k11 = xcalloc(1, sizeof(*k11)); |
| 395 | k11->provider = provider; |
| 396 | provider->refcount++; /* provider referenced by RSA key */ |
| 397 | k11->slotidx = slotidx; |
| 398 | /* identify key object on smartcard */ |
| 399 | k11->keyid_len = keyid_attrib->ulValueLen; |
djm@openbsd.org | d2d772f | 2016-02-12 00:20:30 +0000 | [diff] [blame] | 400 | if (k11->keyid_len > 0) { |
| 401 | k11->keyid = xmalloc(k11->keyid_len); |
| 402 | memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len); |
| 403 | } |
djm@openbsd.org | f118542 | 2019-01-20 23:08:24 +0000 | [diff] [blame] | 404 | |
djm@openbsd.org | fcb1b09 | 2019-01-20 23:12:35 +0000 | [diff] [blame] | 405 | RSA_set_method(rsa, rsa_method); |
djm@openbsd.org | 58622a8 | 2019-01-20 23:10:33 +0000 | [diff] [blame] | 406 | RSA_set_ex_data(rsa, rsa_idx, k11); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 407 | return (0); |
| 408 | } |
| 409 | |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 410 | #ifdef HAVE_EC_KEY_METHOD_NEW |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 411 | /* openssl callback doing the actual signing operation */ |
| 412 | static ECDSA_SIG * |
| 413 | ecdsa_do_sign(const unsigned char *dgst, int dgst_len, const BIGNUM *inv, |
| 414 | const BIGNUM *rp, EC_KEY *ec) |
| 415 | { |
| 416 | struct pkcs11_key *k11; |
| 417 | struct pkcs11_slotinfo *si; |
| 418 | CK_FUNCTION_LIST *f; |
| 419 | CK_ULONG siglen = 0, bnlen; |
| 420 | CK_RV rv; |
| 421 | ECDSA_SIG *ret = NULL; |
| 422 | u_char *sig; |
djm@openbsd.org | 6329764 | 2019-01-21 00:47:34 +0000 | [diff] [blame] | 423 | BIGNUM *r = NULL, *s = NULL; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 424 | |
| 425 | if ((k11 = EC_KEY_get_ex_data(ec, 0)) == NULL) { |
| 426 | ossl_error("EC_KEY_get_key_method_data failed for ec"); |
| 427 | return (NULL); |
| 428 | } |
| 429 | |
| 430 | if (pkcs11_get_key(k11, CKM_ECDSA) == -1) { |
| 431 | error("pkcs11_get_key failed"); |
| 432 | return (NULL); |
| 433 | } |
| 434 | |
| 435 | f = k11->provider->function_list; |
| 436 | si = &k11->provider->slotinfo[k11->slotidx]; |
| 437 | |
| 438 | siglen = ECDSA_size(ec); |
| 439 | sig = xmalloc(siglen); |
| 440 | |
| 441 | /* XXX handle CKR_BUFFER_TOO_SMALL */ |
| 442 | rv = f->C_Sign(si->session, (CK_BYTE *)dgst, dgst_len, sig, &siglen); |
| 443 | if (rv != CKR_OK) { |
| 444 | error("C_Sign failed: %lu", rv); |
| 445 | goto done; |
| 446 | } |
djm@openbsd.org | 749aef3 | 2019-01-20 23:00:12 +0000 | [diff] [blame] | 447 | if (siglen < 64 || siglen > 132 || siglen % 2) { |
| 448 | ossl_error("d2i_ECDSA_SIG failed"); |
| 449 | goto done; |
| 450 | } |
| 451 | bnlen = siglen/2; |
| 452 | if ((ret = ECDSA_SIG_new()) == NULL) { |
| 453 | error("ECDSA_SIG_new failed"); |
| 454 | goto done; |
| 455 | } |
djm@openbsd.org | 6329764 | 2019-01-21 00:47:34 +0000 | [diff] [blame] | 456 | if ((r = BN_bin2bn(sig, bnlen, NULL)) == NULL || |
| 457 | (s = BN_bin2bn(sig+bnlen, bnlen, NULL)) == NULL) { |
djm@openbsd.org | 749aef3 | 2019-01-20 23:00:12 +0000 | [diff] [blame] | 458 | ossl_error("d2i_ECDSA_SIG failed"); |
| 459 | ECDSA_SIG_free(ret); |
| 460 | ret = NULL; |
| 461 | goto done; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 462 | } |
djm@openbsd.org | 6329764 | 2019-01-21 00:47:34 +0000 | [diff] [blame] | 463 | if (!ECDSA_SIG_set0(ret, r, s)) { |
| 464 | error("%s: ECDSA_SIG_set0 failed", __func__); |
| 465 | ECDSA_SIG_free(ret); |
| 466 | ret = NULL; |
| 467 | goto done; |
| 468 | } |
| 469 | r = s = NULL; /* now owned by ret */ |
| 470 | /* success */ |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 471 | done: |
djm@openbsd.org | 6329764 | 2019-01-21 00:47:34 +0000 | [diff] [blame] | 472 | BN_free(r); |
| 473 | BN_free(s); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 474 | free(sig); |
| 475 | |
| 476 | return (ret); |
| 477 | } |
| 478 | |
| 479 | static EC_KEY_METHOD *ec_key_method; |
djm@openbsd.org | 445cfce | 2019-01-20 23:05:52 +0000 | [diff] [blame] | 480 | static int ec_key_idx = 0; |
| 481 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 482 | static int |
| 483 | pkcs11_ecdsa_start_wrapper(void) |
| 484 | { |
| 485 | int (*orig_sign)(int, const unsigned char *, int, unsigned char *, |
| 486 | unsigned int *, const BIGNUM *, const BIGNUM *, EC_KEY *) = NULL; |
| 487 | |
| 488 | if (ec_key_method != NULL) |
| 489 | return (0); |
djm@openbsd.org | 445cfce | 2019-01-20 23:05:52 +0000 | [diff] [blame] | 490 | ec_key_idx = EC_KEY_get_ex_new_index(0, "ssh-pkcs11-ecdsa", |
| 491 | NULL, NULL, pkcs11_k11_free); |
| 492 | if (ec_key_idx == -1) |
| 493 | return (-1); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 494 | ec_key_method = EC_KEY_METHOD_new(EC_KEY_OpenSSL()); |
| 495 | if (ec_key_method == NULL) |
| 496 | return (-1); |
| 497 | EC_KEY_METHOD_get_sign(ec_key_method, &orig_sign, NULL, NULL); |
| 498 | EC_KEY_METHOD_set_sign(ec_key_method, orig_sign, NULL, ecdsa_do_sign); |
| 499 | return (0); |
| 500 | } |
| 501 | |
| 502 | static int |
| 503 | pkcs11_ecdsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx, |
| 504 | CK_ATTRIBUTE *keyid_attrib, EC_KEY *ec) |
| 505 | { |
| 506 | struct pkcs11_key *k11; |
| 507 | |
| 508 | if (pkcs11_ecdsa_start_wrapper() == -1) |
| 509 | return (-1); |
| 510 | |
| 511 | k11 = xcalloc(1, sizeof(*k11)); |
| 512 | k11->provider = provider; |
| 513 | provider->refcount++; /* provider referenced by ECDSA key */ |
| 514 | k11->slotidx = slotidx; |
| 515 | /* identify key object on smartcard */ |
| 516 | k11->keyid_len = keyid_attrib->ulValueLen; |
| 517 | k11->keyid = xmalloc(k11->keyid_len); |
| 518 | memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 519 | |
djm@openbsd.org | fcb1b09 | 2019-01-20 23:12:35 +0000 | [diff] [blame] | 520 | EC_KEY_set_method(ec, ec_key_method); |
djm@openbsd.org | 445cfce | 2019-01-20 23:05:52 +0000 | [diff] [blame] | 521 | EC_KEY_set_ex_data(ec, ec_key_idx, k11); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 522 | |
| 523 | return (0); |
| 524 | } |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 525 | #endif /* HAVE_EC_KEY_METHOD_NEW */ |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 526 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 527 | /* remove trailing spaces */ |
| 528 | static void |
Damien Miller | 746d1a6 | 2013-07-18 16:13:02 +1000 | [diff] [blame] | 529 | rmspace(u_char *buf, size_t len) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 530 | { |
| 531 | size_t i; |
| 532 | |
| 533 | if (!len) |
| 534 | return; |
| 535 | for (i = len - 1; i > 0; i--) |
| 536 | if (i == len - 1 || buf[i] == ' ') |
| 537 | buf[i] = '\0'; |
| 538 | else |
| 539 | break; |
| 540 | } |
| 541 | |
| 542 | /* |
| 543 | * open a pkcs11 session and login if required. |
| 544 | * if pin == NULL we delay login until key use |
| 545 | */ |
| 546 | static int |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 547 | pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin, |
| 548 | CK_ULONG user) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 549 | { |
| 550 | CK_RV rv; |
| 551 | CK_FUNCTION_LIST *f; |
| 552 | CK_SESSION_HANDLE session; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 553 | int login_required, ret; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 554 | |
| 555 | f = p->function_list; |
| 556 | login_required = p->slotinfo[slotidx].token.flags & CKF_LOGIN_REQUIRED; |
| 557 | if (pin && login_required && !strlen(pin)) { |
| 558 | error("pin required"); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 559 | return (-SSH_PKCS11_ERR_PIN_REQUIRED); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 560 | } |
| 561 | if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION| |
| 562 | CKF_SERIAL_SESSION, NULL, NULL, &session)) |
| 563 | != CKR_OK) { |
| 564 | error("C_OpenSession failed: %lu", rv); |
| 565 | return (-1); |
| 566 | } |
| 567 | if (login_required && pin) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 568 | rv = f->C_Login(session, user, |
deraadt@openbsd.org | ce4f59b | 2015-02-03 08:07:20 +0000 | [diff] [blame] | 569 | (u_char *)pin, strlen(pin)); |
djm@openbsd.org | cb3bde3 | 2015-02-02 22:48:53 +0000 | [diff] [blame] | 570 | if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) { |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 571 | error("C_Login failed: %lu", rv); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 572 | ret = (rv == CKR_PIN_LOCKED) ? |
| 573 | -SSH_PKCS11_ERR_PIN_LOCKED : |
| 574 | -SSH_PKCS11_ERR_LOGIN_FAIL; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 575 | if ((rv = f->C_CloseSession(session)) != CKR_OK) |
| 576 | error("C_CloseSession failed: %lu", rv); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 577 | return (ret); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 578 | } |
| 579 | p->slotinfo[slotidx].logged_in = 1; |
| 580 | } |
| 581 | p->slotinfo[slotidx].session = session; |
| 582 | return (0); |
| 583 | } |
| 584 | |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 585 | static int |
djm@openbsd.org | 1129dcf | 2015-01-15 09:40:00 +0000 | [diff] [blame] | 586 | pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key) |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 587 | { |
| 588 | int i; |
| 589 | |
| 590 | for (i = 0; i < *nkeys; i++) |
djm@openbsd.org | 1129dcf | 2015-01-15 09:40:00 +0000 | [diff] [blame] | 591 | if (sshkey_equal(key, (*keysp)[i])) |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 592 | return (1); |
| 593 | return (0); |
| 594 | } |
| 595 | |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 596 | #ifdef HAVE_EC_KEY_METHOD_NEW |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 597 | static struct sshkey * |
| 598 | pkcs11_fetch_ecdsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx, |
| 599 | CK_OBJECT_HANDLE *obj) |
| 600 | { |
| 601 | CK_ATTRIBUTE key_attr[3]; |
| 602 | CK_SESSION_HANDLE session; |
| 603 | CK_FUNCTION_LIST *f = NULL; |
| 604 | CK_RV rv; |
djm@openbsd.org | 24757c1 | 2019-01-20 23:01:59 +0000 | [diff] [blame] | 605 | ASN1_OCTET_STRING *octet = NULL; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 606 | EC_KEY *ec = NULL; |
| 607 | EC_GROUP *group = NULL; |
| 608 | struct sshkey *key = NULL; |
| 609 | const unsigned char *attrp = NULL; |
| 610 | int i; |
| 611 | int nid; |
| 612 | |
| 613 | memset(&key_attr, 0, sizeof(key_attr)); |
| 614 | key_attr[0].type = CKA_ID; |
| 615 | key_attr[1].type = CKA_EC_POINT; |
| 616 | key_attr[2].type = CKA_EC_PARAMS; |
| 617 | |
| 618 | session = p->slotinfo[slotidx].session; |
| 619 | f = p->function_list; |
| 620 | |
| 621 | /* figure out size of the attributes */ |
| 622 | rv = f->C_GetAttributeValue(session, *obj, key_attr, 3); |
| 623 | if (rv != CKR_OK) { |
| 624 | error("C_GetAttributeValue failed: %lu", rv); |
| 625 | return (NULL); |
| 626 | } |
| 627 | |
| 628 | /* |
| 629 | * Allow CKA_ID (always first attribute) to be empty, but |
| 630 | * ensure that none of the others are zero length. |
| 631 | * XXX assumes CKA_ID is always first. |
| 632 | */ |
| 633 | if (key_attr[1].ulValueLen == 0 || |
| 634 | key_attr[2].ulValueLen == 0) { |
| 635 | error("invalid attribute length"); |
| 636 | return (NULL); |
| 637 | } |
| 638 | |
| 639 | /* allocate buffers for attributes */ |
| 640 | for (i = 0; i < 3; i++) |
| 641 | if (key_attr[i].ulValueLen > 0) |
| 642 | key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen); |
| 643 | |
| 644 | /* retrieve ID, public point and curve parameters of EC key */ |
| 645 | rv = f->C_GetAttributeValue(session, *obj, key_attr, 3); |
| 646 | if (rv != CKR_OK) { |
| 647 | error("C_GetAttributeValue failed: %lu", rv); |
| 648 | goto fail; |
| 649 | } |
| 650 | |
| 651 | ec = EC_KEY_new(); |
| 652 | if (ec == NULL) { |
| 653 | error("EC_KEY_new failed"); |
| 654 | goto fail; |
| 655 | } |
| 656 | |
| 657 | attrp = key_attr[2].pValue; |
| 658 | group = d2i_ECPKParameters(NULL, &attrp, key_attr[2].ulValueLen); |
| 659 | if (group == NULL) { |
| 660 | ossl_error("d2i_ECPKParameters failed"); |
| 661 | goto fail; |
| 662 | } |
| 663 | |
| 664 | if (EC_KEY_set_group(ec, group) == 0) { |
| 665 | ossl_error("EC_KEY_set_group failed"); |
| 666 | goto fail; |
| 667 | } |
| 668 | |
| 669 | if (key_attr[1].ulValueLen <= 2) { |
| 670 | error("CKA_EC_POINT too small"); |
| 671 | goto fail; |
| 672 | } |
| 673 | |
djm@openbsd.org | 24757c1 | 2019-01-20 23:01:59 +0000 | [diff] [blame] | 674 | attrp = key_attr[1].pValue; |
| 675 | octet = d2i_ASN1_OCTET_STRING(NULL, &attrp, key_attr[1].ulValueLen); |
| 676 | if (octet == NULL) { |
| 677 | ossl_error("d2i_ASN1_OCTET_STRING failed"); |
| 678 | goto fail; |
| 679 | } |
| 680 | attrp = octet->data; |
| 681 | if (o2i_ECPublicKey(&ec, &attrp, octet->length) == NULL) { |
| 682 | ossl_error("o2i_ECPublicKey failed"); |
| 683 | goto fail; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 684 | } |
| 685 | |
| 686 | nid = sshkey_ecdsa_key_to_nid(ec); |
| 687 | if (nid < 0) { |
| 688 | error("couldn't get curve nid"); |
| 689 | goto fail; |
| 690 | } |
| 691 | |
| 692 | if (pkcs11_ecdsa_wrap(p, slotidx, &key_attr[0], ec)) |
| 693 | goto fail; |
| 694 | |
| 695 | key = sshkey_new(KEY_UNSPEC); |
| 696 | if (key == NULL) { |
| 697 | error("sshkey_new failed"); |
| 698 | goto fail; |
| 699 | } |
| 700 | |
| 701 | key->ecdsa = ec; |
| 702 | key->ecdsa_nid = nid; |
| 703 | key->type = KEY_ECDSA; |
| 704 | key->flags |= SSHKEY_FLAG_EXT; |
| 705 | ec = NULL; /* now owned by key */ |
| 706 | |
| 707 | fail: |
| 708 | for (i = 0; i < 3; i++) |
| 709 | free(key_attr[i].pValue); |
| 710 | if (ec) |
| 711 | EC_KEY_free(ec); |
| 712 | if (group) |
| 713 | EC_GROUP_free(group); |
djm@openbsd.org | 24757c1 | 2019-01-20 23:01:59 +0000 | [diff] [blame] | 714 | if (octet) |
| 715 | ASN1_OCTET_STRING_free(octet); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 716 | |
| 717 | return (key); |
| 718 | } |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 719 | #endif /* HAVE_EC_KEY_METHOD_NEW */ |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 720 | |
| 721 | static struct sshkey * |
| 722 | pkcs11_fetch_rsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx, |
| 723 | CK_OBJECT_HANDLE *obj) |
| 724 | { |
| 725 | CK_ATTRIBUTE key_attr[3]; |
| 726 | CK_SESSION_HANDLE session; |
| 727 | CK_FUNCTION_LIST *f = NULL; |
| 728 | CK_RV rv; |
| 729 | RSA *rsa = NULL; |
| 730 | BIGNUM *rsa_n, *rsa_e; |
| 731 | struct sshkey *key = NULL; |
| 732 | int i; |
| 733 | |
| 734 | memset(&key_attr, 0, sizeof(key_attr)); |
| 735 | key_attr[0].type = CKA_ID; |
| 736 | key_attr[1].type = CKA_MODULUS; |
| 737 | key_attr[2].type = CKA_PUBLIC_EXPONENT; |
| 738 | |
| 739 | session = p->slotinfo[slotidx].session; |
| 740 | f = p->function_list; |
| 741 | |
| 742 | /* figure out size of the attributes */ |
| 743 | rv = f->C_GetAttributeValue(session, *obj, key_attr, 3); |
| 744 | if (rv != CKR_OK) { |
| 745 | error("C_GetAttributeValue failed: %lu", rv); |
| 746 | return (NULL); |
| 747 | } |
| 748 | |
| 749 | /* |
| 750 | * Allow CKA_ID (always first attribute) to be empty, but |
| 751 | * ensure that none of the others are zero length. |
| 752 | * XXX assumes CKA_ID is always first. |
| 753 | */ |
| 754 | if (key_attr[1].ulValueLen == 0 || |
| 755 | key_attr[2].ulValueLen == 0) { |
| 756 | error("invalid attribute length"); |
| 757 | return (NULL); |
| 758 | } |
| 759 | |
| 760 | /* allocate buffers for attributes */ |
| 761 | for (i = 0; i < 3; i++) |
| 762 | if (key_attr[i].ulValueLen > 0) |
| 763 | key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen); |
| 764 | |
| 765 | /* retrieve ID, modulus and public exponent of RSA key */ |
| 766 | rv = f->C_GetAttributeValue(session, *obj, key_attr, 3); |
| 767 | if (rv != CKR_OK) { |
| 768 | error("C_GetAttributeValue failed: %lu", rv); |
| 769 | goto fail; |
| 770 | } |
| 771 | |
| 772 | rsa = RSA_new(); |
| 773 | if (rsa == NULL) { |
| 774 | error("RSA_new failed"); |
| 775 | goto fail; |
| 776 | } |
| 777 | |
| 778 | rsa_n = BN_bin2bn(key_attr[1].pValue, key_attr[1].ulValueLen, NULL); |
| 779 | rsa_e = BN_bin2bn(key_attr[2].pValue, key_attr[2].ulValueLen, NULL); |
| 780 | if (rsa_n == NULL || rsa_e == NULL) { |
| 781 | error("BN_bin2bn failed"); |
| 782 | goto fail; |
| 783 | } |
| 784 | if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL)) |
| 785 | fatal("%s: set key", __func__); |
| 786 | rsa_n = rsa_e = NULL; /* transferred */ |
| 787 | |
| 788 | if (pkcs11_rsa_wrap(p, slotidx, &key_attr[0], rsa)) |
| 789 | goto fail; |
| 790 | |
| 791 | key = sshkey_new(KEY_UNSPEC); |
| 792 | if (key == NULL) { |
| 793 | error("sshkey_new failed"); |
| 794 | goto fail; |
| 795 | } |
| 796 | |
| 797 | key->rsa = rsa; |
| 798 | key->type = KEY_RSA; |
| 799 | key->flags |= SSHKEY_FLAG_EXT; |
| 800 | rsa = NULL; /* now owned by key */ |
| 801 | |
| 802 | fail: |
| 803 | for (i = 0; i < 3; i++) |
| 804 | free(key_attr[i].pValue); |
| 805 | RSA_free(rsa); |
| 806 | |
| 807 | return (key); |
| 808 | } |
| 809 | |
| 810 | static struct sshkey * |
| 811 | pkcs11_fetch_x509_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx, |
| 812 | CK_OBJECT_HANDLE *obj) |
| 813 | { |
| 814 | CK_ATTRIBUTE cert_attr[3]; |
| 815 | CK_SESSION_HANDLE session; |
| 816 | CK_FUNCTION_LIST *f = NULL; |
| 817 | CK_RV rv; |
| 818 | X509 *x509 = NULL; |
| 819 | EVP_PKEY *evp; |
| 820 | RSA *rsa = NULL; |
| 821 | EC_KEY *ec = NULL; |
| 822 | struct sshkey *key = NULL; |
| 823 | int i; |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 824 | #ifdef HAVE_EC_KEY_METHOD_NEW |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 825 | int nid; |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 826 | #endif |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 827 | const u_char *cp; |
| 828 | |
| 829 | memset(&cert_attr, 0, sizeof(cert_attr)); |
| 830 | cert_attr[0].type = CKA_ID; |
| 831 | cert_attr[1].type = CKA_SUBJECT; |
| 832 | cert_attr[2].type = CKA_VALUE; |
| 833 | |
| 834 | session = p->slotinfo[slotidx].session; |
| 835 | f = p->function_list; |
| 836 | |
| 837 | /* figure out size of the attributes */ |
| 838 | rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3); |
| 839 | if (rv != CKR_OK) { |
| 840 | error("C_GetAttributeValue failed: %lu", rv); |
| 841 | return (NULL); |
| 842 | } |
| 843 | |
| 844 | /* |
| 845 | * Allow CKA_ID (always first attribute) to be empty, but |
| 846 | * ensure that none of the others are zero length. |
| 847 | * XXX assumes CKA_ID is always first. |
| 848 | */ |
| 849 | if (cert_attr[1].ulValueLen == 0 || |
| 850 | cert_attr[2].ulValueLen == 0) { |
| 851 | error("invalid attribute length"); |
| 852 | return (NULL); |
| 853 | } |
| 854 | |
| 855 | /* allocate buffers for attributes */ |
| 856 | for (i = 0; i < 3; i++) |
| 857 | if (cert_attr[i].ulValueLen > 0) |
| 858 | cert_attr[i].pValue = xcalloc(1, cert_attr[i].ulValueLen); |
| 859 | |
| 860 | /* retrieve ID, subject and value of certificate */ |
| 861 | rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3); |
| 862 | if (rv != CKR_OK) { |
| 863 | error("C_GetAttributeValue failed: %lu", rv); |
| 864 | goto fail; |
| 865 | } |
| 866 | |
| 867 | x509 = X509_new(); |
| 868 | if (x509 == NULL) { |
| 869 | error("x509_new failed"); |
| 870 | goto fail; |
| 871 | } |
| 872 | |
| 873 | cp = cert_attr[2].pValue; |
| 874 | if (d2i_X509(&x509, &cp, cert_attr[2].ulValueLen) == NULL) { |
| 875 | error("d2i_x509 failed"); |
| 876 | goto fail; |
| 877 | } |
| 878 | |
| 879 | evp = X509_get_pubkey(x509); |
| 880 | if (evp == NULL) { |
| 881 | error("X509_get_pubkey failed"); |
| 882 | goto fail; |
| 883 | } |
| 884 | |
| 885 | if (EVP_PKEY_base_id(evp) == EVP_PKEY_RSA) { |
| 886 | if (EVP_PKEY_get0_RSA(evp) == NULL) { |
| 887 | error("invalid x509; no rsa key"); |
| 888 | goto fail; |
| 889 | } |
| 890 | if ((rsa = RSAPublicKey_dup(EVP_PKEY_get0_RSA(evp))) == NULL) { |
| 891 | error("RSAPublicKey_dup failed"); |
| 892 | goto fail; |
| 893 | } |
| 894 | |
| 895 | if (pkcs11_rsa_wrap(p, slotidx, &cert_attr[0], rsa)) |
| 896 | goto fail; |
| 897 | |
| 898 | key = sshkey_new(KEY_UNSPEC); |
| 899 | if (key == NULL) { |
| 900 | error("sshkey_new failed"); |
| 901 | goto fail; |
| 902 | } |
| 903 | |
| 904 | key->rsa = rsa; |
| 905 | key->type = KEY_RSA; |
| 906 | key->flags |= SSHKEY_FLAG_EXT; |
| 907 | rsa = NULL; /* now owned by key */ |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 908 | #ifdef HAVE_EC_KEY_METHOD_NEW |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 909 | } else if (EVP_PKEY_base_id(evp) == EVP_PKEY_EC) { |
djm@openbsd.org | 8a24675 | 2019-01-20 23:03:26 +0000 | [diff] [blame] | 910 | if (EVP_PKEY_get0_EC_KEY(evp) == NULL) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 911 | error("invalid x509; no ec key"); |
| 912 | goto fail; |
| 913 | } |
djm@openbsd.org | 8a24675 | 2019-01-20 23:03:26 +0000 | [diff] [blame] | 914 | if ((ec = EC_KEY_dup(EVP_PKEY_get0_EC_KEY(evp))) == NULL) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 915 | error("EC_KEY_dup failed"); |
| 916 | goto fail; |
| 917 | } |
| 918 | |
| 919 | nid = sshkey_ecdsa_key_to_nid(ec); |
| 920 | if (nid < 0) { |
| 921 | error("couldn't get curve nid"); |
| 922 | goto fail; |
| 923 | } |
| 924 | |
| 925 | if (pkcs11_ecdsa_wrap(p, slotidx, &cert_attr[0], ec)) |
| 926 | goto fail; |
| 927 | |
| 928 | key = sshkey_new(KEY_UNSPEC); |
| 929 | if (key == NULL) { |
| 930 | error("sshkey_new failed"); |
| 931 | goto fail; |
| 932 | } |
| 933 | |
| 934 | key->ecdsa = ec; |
| 935 | key->ecdsa_nid = nid; |
| 936 | key->type = KEY_ECDSA; |
| 937 | key->flags |= SSHKEY_FLAG_EXT; |
| 938 | ec = NULL; /* now owned by key */ |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 939 | #endif /* HAVE_EC_KEY_METHOD_NEW */ |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 940 | } else |
| 941 | error("unknown certificate key type"); |
| 942 | |
| 943 | fail: |
| 944 | for (i = 0; i < 3; i++) |
| 945 | free(cert_attr[i].pValue); |
| 946 | X509_free(x509); |
| 947 | RSA_free(rsa); |
| 948 | EC_KEY_free(ec); |
| 949 | |
| 950 | return (key); |
| 951 | } |
| 952 | |
| 953 | #if 0 |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 954 | static int |
djm@openbsd.org | 482d23b | 2018-09-13 02:08:33 +0000 | [diff] [blame] | 955 | have_rsa_key(const RSA *rsa) |
| 956 | { |
| 957 | const BIGNUM *rsa_n, *rsa_e; |
| 958 | |
| 959 | RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL); |
| 960 | return rsa_n != NULL && rsa_e != NULL; |
| 961 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 962 | #endif |
djm@openbsd.org | 482d23b | 2018-09-13 02:08:33 +0000 | [diff] [blame] | 963 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 964 | /* |
| 965 | * lookup certificates for token in slot identified by slotidx, |
| 966 | * add 'wrapped' public keys to the 'keysp' array and increment nkeys. |
| 967 | * keysp points to an (possibly empty) array with *nkeys keys. |
| 968 | */ |
djm@openbsd.org | 482d23b | 2018-09-13 02:08:33 +0000 | [diff] [blame] | 969 | static int |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 970 | pkcs11_fetch_certs(struct pkcs11_provider *p, CK_ULONG slotidx, |
djm@openbsd.org | 1129dcf | 2015-01-15 09:40:00 +0000 | [diff] [blame] | 971 | struct sshkey ***keysp, int *nkeys) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 972 | { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 973 | struct sshkey *key = NULL; |
| 974 | CK_OBJECT_CLASS key_class; |
| 975 | CK_ATTRIBUTE key_attr[1]; |
| 976 | CK_SESSION_HANDLE session; |
| 977 | CK_FUNCTION_LIST *f = NULL; |
| 978 | CK_RV rv; |
| 979 | CK_OBJECT_HANDLE obj; |
| 980 | CK_ULONG n = 0; |
| 981 | int ret = -1; |
Tim Rice | 179eee0 | 2010-03-04 12:48:05 -0800 | [diff] [blame] | 982 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 983 | memset(&key_attr, 0, sizeof(key_attr)); |
| 984 | memset(&obj, 0, sizeof(obj)); |
| 985 | |
| 986 | key_class = CKO_CERTIFICATE; |
| 987 | key_attr[0].type = CKA_CLASS; |
| 988 | key_attr[0].pValue = &key_class; |
| 989 | key_attr[0].ulValueLen = sizeof(key_class); |
| 990 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 991 | session = p->slotinfo[slotidx].session; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 992 | f = p->function_list; |
| 993 | |
| 994 | rv = f->C_FindObjectsInit(session, key_attr, 1); |
| 995 | if (rv != CKR_OK) { |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 996 | error("C_FindObjectsInit failed: %lu", rv); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 997 | goto fail; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 998 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 999 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1000 | while (1) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1001 | CK_CERTIFICATE_TYPE ck_cert_type; |
| 1002 | |
| 1003 | rv = f->C_FindObjects(session, &obj, 1, &n); |
| 1004 | if (rv != CKR_OK) { |
| 1005 | error("C_FindObjects failed: %lu", rv); |
| 1006 | goto fail; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1007 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1008 | if (n == 0) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1009 | break; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1010 | |
| 1011 | memset(&ck_cert_type, 0, sizeof(ck_cert_type)); |
| 1012 | memset(&key_attr, 0, sizeof(key_attr)); |
| 1013 | key_attr[0].type = CKA_CERTIFICATE_TYPE; |
| 1014 | key_attr[0].pValue = &ck_cert_type; |
| 1015 | key_attr[0].ulValueLen = sizeof(ck_cert_type); |
| 1016 | |
| 1017 | rv = f->C_GetAttributeValue(session, obj, key_attr, 1); |
| 1018 | if (rv != CKR_OK) { |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1019 | error("C_GetAttributeValue failed: %lu", rv); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1020 | goto fail; |
djm@openbsd.org | 63ebcd0 | 2015-07-18 08:02:17 +0000 | [diff] [blame] | 1021 | } |
| 1022 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1023 | switch (ck_cert_type) { |
| 1024 | case CKC_X_509: |
| 1025 | key = pkcs11_fetch_x509_pubkey(p, slotidx, &obj); |
| 1026 | break; |
| 1027 | default: |
| 1028 | /* XXX print key type? */ |
| 1029 | error("skipping unsupported certificate type"); |
| 1030 | } |
djm@openbsd.org | 482d23b | 2018-09-13 02:08:33 +0000 | [diff] [blame] | 1031 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1032 | if (key == NULL) { |
| 1033 | error("failed to fetch key"); |
| 1034 | continue; |
| 1035 | } |
| 1036 | |
| 1037 | if (pkcs11_key_included(keysp, nkeys, key)) { |
| 1038 | sshkey_free(key); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1039 | } else { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1040 | /* expand key array and add key */ |
| 1041 | *keysp = xrecallocarray(*keysp, *nkeys, |
| 1042 | *nkeys + 1, sizeof(struct sshkey *)); |
| 1043 | (*keysp)[*nkeys] = key; |
| 1044 | *nkeys = *nkeys + 1; |
| 1045 | debug("have %d keys", *nkeys); |
Damien Miller | d2252c7 | 2013-11-04 07:41:48 +1100 | [diff] [blame] | 1046 | } |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1047 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1048 | |
| 1049 | ret = 0; |
| 1050 | fail: |
| 1051 | rv = f->C_FindObjectsFinal(session); |
| 1052 | if (rv != CKR_OK) { |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1053 | error("C_FindObjectsFinal failed: %lu", rv); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1054 | ret = -1; |
| 1055 | } |
| 1056 | |
| 1057 | return (ret); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1058 | } |
| 1059 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1060 | /* |
| 1061 | * lookup public keys for token in slot identified by slotidx, |
| 1062 | * add 'wrapped' public keys to the 'keysp' array and increment nkeys. |
| 1063 | * keysp points to an (possibly empty) array with *nkeys keys. |
| 1064 | */ |
| 1065 | static int |
| 1066 | pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx, |
| 1067 | struct sshkey ***keysp, int *nkeys) |
| 1068 | { |
| 1069 | struct sshkey *key = NULL; |
| 1070 | CK_OBJECT_CLASS key_class; |
| 1071 | CK_ATTRIBUTE key_attr[1]; |
| 1072 | CK_SESSION_HANDLE session; |
| 1073 | CK_FUNCTION_LIST *f = NULL; |
| 1074 | CK_RV rv; |
| 1075 | CK_OBJECT_HANDLE obj; |
| 1076 | CK_ULONG n = 0; |
| 1077 | int ret = -1; |
| 1078 | |
| 1079 | memset(&key_attr, 0, sizeof(key_attr)); |
| 1080 | memset(&obj, 0, sizeof(obj)); |
| 1081 | |
| 1082 | key_class = CKO_PUBLIC_KEY; |
| 1083 | key_attr[0].type = CKA_CLASS; |
| 1084 | key_attr[0].pValue = &key_class; |
| 1085 | key_attr[0].ulValueLen = sizeof(key_class); |
| 1086 | |
| 1087 | session = p->slotinfo[slotidx].session; |
| 1088 | f = p->function_list; |
| 1089 | |
| 1090 | rv = f->C_FindObjectsInit(session, key_attr, 1); |
| 1091 | if (rv != CKR_OK) { |
| 1092 | error("C_FindObjectsInit failed: %lu", rv); |
| 1093 | goto fail; |
| 1094 | } |
| 1095 | |
| 1096 | while (1) { |
| 1097 | CK_KEY_TYPE ck_key_type; |
| 1098 | |
| 1099 | rv = f->C_FindObjects(session, &obj, 1, &n); |
| 1100 | if (rv != CKR_OK) { |
| 1101 | error("C_FindObjects failed: %lu", rv); |
| 1102 | goto fail; |
| 1103 | } |
| 1104 | if (n == 0) |
| 1105 | break; |
| 1106 | |
| 1107 | memset(&ck_key_type, 0, sizeof(ck_key_type)); |
| 1108 | memset(&key_attr, 0, sizeof(key_attr)); |
| 1109 | key_attr[0].type = CKA_KEY_TYPE; |
| 1110 | key_attr[0].pValue = &ck_key_type; |
| 1111 | key_attr[0].ulValueLen = sizeof(ck_key_type); |
| 1112 | |
| 1113 | rv = f->C_GetAttributeValue(session, obj, key_attr, 1); |
| 1114 | if (rv != CKR_OK) { |
| 1115 | error("C_GetAttributeValue failed: %lu", rv); |
| 1116 | goto fail; |
| 1117 | } |
| 1118 | |
| 1119 | switch (ck_key_type) { |
| 1120 | case CKK_RSA: |
| 1121 | key = pkcs11_fetch_rsa_pubkey(p, slotidx, &obj); |
| 1122 | break; |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 1123 | #ifdef HAVE_EC_KEY_METHOD_NEW |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1124 | case CKK_ECDSA: |
| 1125 | key = pkcs11_fetch_ecdsa_pubkey(p, slotidx, &obj); |
| 1126 | break; |
Damien Miller | e2cb445 | 2019-01-21 11:32:28 +1100 | [diff] [blame] | 1127 | #endif /* HAVE_EC_KEY_METHOD_NEW */ |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1128 | default: |
| 1129 | /* XXX print key type? */ |
| 1130 | error("skipping unsupported key type"); |
| 1131 | } |
| 1132 | |
| 1133 | if (key == NULL) { |
| 1134 | error("failed to fetch key"); |
| 1135 | continue; |
| 1136 | } |
| 1137 | |
| 1138 | if (pkcs11_key_included(keysp, nkeys, key)) { |
| 1139 | sshkey_free(key); |
| 1140 | } else { |
| 1141 | /* expand key array and add key */ |
| 1142 | *keysp = xrecallocarray(*keysp, *nkeys, |
| 1143 | *nkeys + 1, sizeof(struct sshkey *)); |
| 1144 | (*keysp)[*nkeys] = key; |
| 1145 | *nkeys = *nkeys + 1; |
| 1146 | debug("have %d keys", *nkeys); |
| 1147 | } |
| 1148 | } |
| 1149 | |
| 1150 | ret = 0; |
| 1151 | fail: |
| 1152 | rv = f->C_FindObjectsFinal(session); |
| 1153 | if (rv != CKR_OK) { |
| 1154 | error("C_FindObjectsFinal failed: %lu", rv); |
| 1155 | ret = -1; |
| 1156 | } |
| 1157 | |
| 1158 | return (ret); |
| 1159 | } |
| 1160 | |
| 1161 | #ifdef WITH_PKCS11_KEYGEN |
| 1162 | #define FILL_ATTR(attr, idx, typ, val, len) \ |
| 1163 | { (attr[idx]).type=(typ); (attr[idx]).pValue=(val); (attr[idx]).ulValueLen=len; idx++; } |
| 1164 | |
| 1165 | static struct sshkey * |
| 1166 | pkcs11_rsa_generate_private_key(struct pkcs11_provider *p, CK_ULONG slotidx, |
| 1167 | char *label, CK_ULONG bits, CK_BYTE keyid, u_int32_t *err) |
| 1168 | { |
| 1169 | struct pkcs11_slotinfo *si; |
| 1170 | char *plabel = label ? label : ""; |
| 1171 | int npub = 0, npriv = 0; |
| 1172 | CK_RV rv; |
| 1173 | CK_FUNCTION_LIST *f; |
| 1174 | CK_SESSION_HANDLE session; |
| 1175 | CK_BBOOL true_val = CK_TRUE, false_val = CK_FALSE; |
| 1176 | CK_OBJECT_HANDLE pubKey, privKey; |
| 1177 | CK_ATTRIBUTE tpub[16], tpriv[16]; |
| 1178 | CK_MECHANISM mech = { |
| 1179 | CKM_RSA_PKCS_KEY_PAIR_GEN, NULL_PTR, 0 |
| 1180 | }; |
| 1181 | CK_BYTE pubExponent[] = { |
| 1182 | 0x01, 0x00, 0x01 /* RSA_F4 in bytes */ |
| 1183 | }; |
| 1184 | pubkey_filter[0].pValue = &pubkey_class; |
| 1185 | cert_filter[0].pValue = &cert_class; |
| 1186 | |
| 1187 | *err = 0; |
| 1188 | |
| 1189 | FILL_ATTR(tpub, npub, CKA_TOKEN, &true_val, sizeof(true_val)); |
| 1190 | FILL_ATTR(tpub, npub, CKA_LABEL, plabel, strlen(plabel)); |
| 1191 | FILL_ATTR(tpub, npub, CKA_ENCRYPT, &false_val, sizeof(false_val)); |
| 1192 | FILL_ATTR(tpub, npub, CKA_VERIFY, &true_val, sizeof(true_val)); |
| 1193 | FILL_ATTR(tpub, npub, CKA_VERIFY_RECOVER, &false_val, |
| 1194 | sizeof(false_val)); |
| 1195 | FILL_ATTR(tpub, npub, CKA_WRAP, &false_val, sizeof(false_val)); |
| 1196 | FILL_ATTR(tpub, npub, CKA_DERIVE, &false_val, sizeof(false_val)); |
| 1197 | FILL_ATTR(tpub, npub, CKA_MODULUS_BITS, &bits, sizeof(bits)); |
| 1198 | FILL_ATTR(tpub, npub, CKA_PUBLIC_EXPONENT, pubExponent, |
| 1199 | sizeof(pubExponent)); |
| 1200 | FILL_ATTR(tpub, npub, CKA_ID, &keyid, sizeof(keyid)); |
| 1201 | |
| 1202 | FILL_ATTR(tpriv, npriv, CKA_TOKEN, &true_val, sizeof(true_val)); |
| 1203 | FILL_ATTR(tpriv, npriv, CKA_LABEL, plabel, strlen(plabel)); |
| 1204 | FILL_ATTR(tpriv, npriv, CKA_PRIVATE, &true_val, sizeof(true_val)); |
| 1205 | FILL_ATTR(tpriv, npriv, CKA_SENSITIVE, &true_val, sizeof(true_val)); |
| 1206 | FILL_ATTR(tpriv, npriv, CKA_DECRYPT, &false_val, sizeof(false_val)); |
| 1207 | FILL_ATTR(tpriv, npriv, CKA_SIGN, &true_val, sizeof(true_val)); |
| 1208 | FILL_ATTR(tpriv, npriv, CKA_SIGN_RECOVER, &false_val, |
| 1209 | sizeof(false_val)); |
| 1210 | FILL_ATTR(tpriv, npriv, CKA_UNWRAP, &false_val, sizeof(false_val)); |
| 1211 | FILL_ATTR(tpriv, npriv, CKA_DERIVE, &false_val, sizeof(false_val)); |
| 1212 | FILL_ATTR(tpriv, npriv, CKA_ID, &keyid, sizeof(keyid)); |
| 1213 | |
| 1214 | f = p->function_list; |
| 1215 | si = &p->slotinfo[slotidx]; |
| 1216 | session = si->session; |
| 1217 | |
| 1218 | if ((rv = f->C_GenerateKeyPair(session, &mech, tpub, npub, tpriv, npriv, |
| 1219 | &pubKey, &privKey)) != CKR_OK) { |
| 1220 | error("%s: key generation failed: error 0x%lx", __func__, rv); |
| 1221 | *err = rv; |
| 1222 | return NULL; |
| 1223 | } |
| 1224 | |
| 1225 | return pkcs11_fetch_rsa_pubkey(p, slotidx, &pubKey); |
| 1226 | } |
| 1227 | |
| 1228 | static int |
| 1229 | pkcs11_decode_hex(const char *hex, unsigned char **dest, size_t *rlen) |
| 1230 | { |
| 1231 | size_t i, len; |
| 1232 | char ptr[3]; |
| 1233 | |
| 1234 | if (dest) |
| 1235 | *dest = NULL; |
| 1236 | if (rlen) |
| 1237 | *rlen = 0; |
| 1238 | |
| 1239 | if ((len = strlen(hex)) % 2) |
| 1240 | return -1; |
| 1241 | len /= 2; |
| 1242 | |
| 1243 | *dest = xmalloc(len); |
| 1244 | |
| 1245 | ptr[2] = '\0'; |
| 1246 | for (i = 0; i < len; i++) { |
| 1247 | ptr[0] = hex[2 * i]; |
| 1248 | ptr[1] = hex[(2 * i) + 1]; |
| 1249 | if (!isxdigit(ptr[0]) || !isxdigit(ptr[1])) |
| 1250 | return -1; |
| 1251 | (*dest)[i] = (unsigned char)strtoul(ptr, NULL, 16); |
| 1252 | } |
| 1253 | |
| 1254 | if (rlen) |
| 1255 | *rlen = len; |
| 1256 | |
| 1257 | return 0; |
| 1258 | } |
| 1259 | |
| 1260 | static struct ec_curve_info { |
| 1261 | const char *name; |
| 1262 | const char *oid; |
| 1263 | const char *oid_encoded; |
| 1264 | size_t size; |
| 1265 | } ec_curve_infos[] = { |
| 1266 | {"prime256v1", "1.2.840.10045.3.1.7", "06082A8648CE3D030107", 256}, |
| 1267 | {"secp384r1", "1.3.132.0.34", "06052B81040022", 384}, |
| 1268 | {"secp521r1", "1.3.132.0.35", "06052B81040023", 521}, |
djm@openbsd.org | 6529409 | 2019-01-20 23:11:11 +0000 | [diff] [blame] | 1269 | {NULL, NULL, NULL, 0}, |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1270 | }; |
| 1271 | |
| 1272 | static struct sshkey * |
| 1273 | pkcs11_ecdsa_generate_private_key(struct pkcs11_provider *p, CK_ULONG slotidx, |
| 1274 | char *label, CK_ULONG bits, CK_BYTE keyid, u_int32_t *err) |
| 1275 | { |
| 1276 | struct pkcs11_slotinfo *si; |
| 1277 | char *plabel = label ? label : ""; |
| 1278 | int i; |
| 1279 | size_t ecparams_size; |
| 1280 | unsigned char *ecparams = NULL; |
| 1281 | int npub = 0, npriv = 0; |
| 1282 | CK_RV rv; |
| 1283 | CK_FUNCTION_LIST *f; |
| 1284 | CK_SESSION_HANDLE session; |
| 1285 | CK_BBOOL true_val = CK_TRUE, false_val = CK_FALSE; |
| 1286 | CK_OBJECT_HANDLE pubKey, privKey; |
| 1287 | CK_MECHANISM mech = { |
| 1288 | CKM_EC_KEY_PAIR_GEN, NULL_PTR, 0 |
| 1289 | }; |
| 1290 | CK_ATTRIBUTE tpub[16], tpriv[16]; |
| 1291 | |
| 1292 | *err = 0; |
| 1293 | |
| 1294 | for (i = 0; ec_curve_infos[i].name; i++) { |
| 1295 | if (ec_curve_infos[i].size == bits) |
| 1296 | break; |
| 1297 | } |
| 1298 | if (!ec_curve_infos[i].name) { |
| 1299 | error("%s: invalid key size %lu", __func__, bits); |
| 1300 | return NULL; |
| 1301 | } |
| 1302 | if (pkcs11_decode_hex(ec_curve_infos[i].oid_encoded, &ecparams, |
| 1303 | &ecparams_size) == -1) { |
| 1304 | error("%s: invalid oid", __func__); |
| 1305 | return NULL; |
| 1306 | } |
| 1307 | |
| 1308 | FILL_ATTR(tpub, npub, CKA_TOKEN, &true_val, sizeof(true_val)); |
| 1309 | FILL_ATTR(tpub, npub, CKA_LABEL, plabel, strlen(plabel)); |
| 1310 | FILL_ATTR(tpub, npub, CKA_ENCRYPT, &false_val, sizeof(false_val)); |
| 1311 | FILL_ATTR(tpub, npub, CKA_VERIFY, &true_val, sizeof(true_val)); |
| 1312 | FILL_ATTR(tpub, npub, CKA_VERIFY_RECOVER, &false_val, |
| 1313 | sizeof(false_val)); |
| 1314 | FILL_ATTR(tpub, npub, CKA_WRAP, &false_val, sizeof(false_val)); |
| 1315 | FILL_ATTR(tpub, npub, CKA_DERIVE, &false_val, sizeof(false_val)); |
| 1316 | FILL_ATTR(tpub, npub, CKA_EC_PARAMS, ecparams, ecparams_size); |
| 1317 | FILL_ATTR(tpub, npub, CKA_ID, &keyid, sizeof(keyid)); |
| 1318 | |
| 1319 | FILL_ATTR(tpriv, npriv, CKA_TOKEN, &true_val, sizeof(true_val)); |
| 1320 | FILL_ATTR(tpriv, npriv, CKA_LABEL, plabel, strlen(plabel)); |
| 1321 | FILL_ATTR(tpriv, npriv, CKA_PRIVATE, &true_val, sizeof(true_val)); |
| 1322 | FILL_ATTR(tpriv, npriv, CKA_SENSITIVE, &true_val, sizeof(true_val)); |
| 1323 | FILL_ATTR(tpriv, npriv, CKA_DECRYPT, &false_val, sizeof(false_val)); |
| 1324 | FILL_ATTR(tpriv, npriv, CKA_SIGN, &true_val, sizeof(true_val)); |
| 1325 | FILL_ATTR(tpriv, npriv, CKA_SIGN_RECOVER, &false_val, |
| 1326 | sizeof(false_val)); |
| 1327 | FILL_ATTR(tpriv, npriv, CKA_UNWRAP, &false_val, sizeof(false_val)); |
| 1328 | FILL_ATTR(tpriv, npriv, CKA_DERIVE, &false_val, sizeof(false_val)); |
| 1329 | FILL_ATTR(tpriv, npriv, CKA_ID, &keyid, sizeof(keyid)); |
| 1330 | |
| 1331 | f = p->function_list; |
| 1332 | si = &p->slotinfo[slotidx]; |
| 1333 | session = si->session; |
| 1334 | |
| 1335 | if ((rv = f->C_GenerateKeyPair(session, &mech, tpub, npub, tpriv, npriv, |
| 1336 | &pubKey, &privKey)) != CKR_OK) { |
| 1337 | error("%s: key generation failed: error 0x%lx", __func__, rv); |
| 1338 | *err = rv; |
| 1339 | return NULL; |
| 1340 | } |
| 1341 | |
| 1342 | return pkcs11_fetch_ecdsa_pubkey(p, slotidx, &pubKey); |
| 1343 | } |
| 1344 | #endif /* WITH_PKCS11_KEYGEN */ |
| 1345 | |
| 1346 | /* |
| 1347 | * register a new provider, fails if provider already exists. if |
| 1348 | * keyp is provided, fetch keys. |
| 1349 | */ |
| 1350 | static int |
| 1351 | pkcs11_register_provider(char *provider_id, char *pin, struct sshkey ***keyp, |
| 1352 | struct pkcs11_provider **providerp, CK_ULONG user) |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1353 | { |
| 1354 | int nkeys, need_finalize = 0; |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1355 | int ret = -1; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1356 | struct pkcs11_provider *p = NULL; |
| 1357 | void *handle = NULL; |
| 1358 | CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **); |
| 1359 | CK_RV rv; |
| 1360 | CK_FUNCTION_LIST *f = NULL; |
| 1361 | CK_TOKEN_INFO *token; |
| 1362 | CK_ULONG i; |
| 1363 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1364 | if (providerp == NULL) |
| 1365 | goto fail; |
| 1366 | *providerp = NULL; |
| 1367 | |
| 1368 | if (keyp != NULL) |
| 1369 | *keyp = NULL; |
| 1370 | |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1371 | if (pkcs11_provider_lookup(provider_id) != NULL) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1372 | debug("%s: provider already registered: %s", |
| 1373 | __func__, provider_id); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1374 | goto fail; |
| 1375 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1376 | /* open shared pkcs11-library */ |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1377 | if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) { |
| 1378 | error("dlopen %s failed: %s", provider_id, dlerror()); |
| 1379 | goto fail; |
| 1380 | } |
| 1381 | if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL) { |
| 1382 | error("dlsym(C_GetFunctionList) failed: %s", dlerror()); |
| 1383 | goto fail; |
| 1384 | } |
| 1385 | p = xcalloc(1, sizeof(*p)); |
| 1386 | p->name = xstrdup(provider_id); |
| 1387 | p->handle = handle; |
| 1388 | /* setup the pkcs11 callbacks */ |
| 1389 | if ((rv = (*getfunctionlist)(&f)) != CKR_OK) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1390 | error("C_GetFunctionList for provider %s failed: %lu", |
| 1391 | provider_id, rv); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1392 | goto fail; |
| 1393 | } |
| 1394 | p->function_list = f; |
| 1395 | if ((rv = f->C_Initialize(NULL)) != CKR_OK) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1396 | error("C_Initialize for provider %s failed: %lu", |
| 1397 | provider_id, rv); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1398 | goto fail; |
| 1399 | } |
| 1400 | need_finalize = 1; |
| 1401 | if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1402 | error("C_GetInfo for provider %s failed: %lu", |
| 1403 | provider_id, rv); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1404 | goto fail; |
| 1405 | } |
| 1406 | rmspace(p->info.manufacturerID, sizeof(p->info.manufacturerID)); |
| 1407 | rmspace(p->info.libraryDescription, sizeof(p->info.libraryDescription)); |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1408 | debug("provider %s: manufacturerID <%s> cryptokiVersion %d.%d" |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1409 | " libraryDescription <%s> libraryVersion %d.%d", |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1410 | provider_id, |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1411 | p->info.manufacturerID, |
| 1412 | p->info.cryptokiVersion.major, |
| 1413 | p->info.cryptokiVersion.minor, |
| 1414 | p->info.libraryDescription, |
| 1415 | p->info.libraryVersion.major, |
| 1416 | p->info.libraryVersion.minor); |
| 1417 | if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) { |
| 1418 | error("C_GetSlotList failed: %lu", rv); |
| 1419 | goto fail; |
| 1420 | } |
| 1421 | if (p->nslots == 0) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1422 | error("%s: provider %s returned no slots", __func__, |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1423 | provider_id); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1424 | ret = -SSH_PKCS11_ERR_NO_SLOTS; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1425 | goto fail; |
| 1426 | } |
| 1427 | p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID)); |
| 1428 | if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots)) |
| 1429 | != CKR_OK) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1430 | error("C_GetSlotList for provider %s failed: %lu", |
| 1431 | provider_id, rv); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1432 | goto fail; |
| 1433 | } |
| 1434 | p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo)); |
| 1435 | p->valid = 1; |
| 1436 | nkeys = 0; |
| 1437 | for (i = 0; i < p->nslots; i++) { |
| 1438 | token = &p->slotinfo[i].token; |
| 1439 | if ((rv = f->C_GetTokenInfo(p->slotlist[i], token)) |
| 1440 | != CKR_OK) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1441 | error("C_GetTokenInfo for provider %s slot %lu " |
| 1442 | "failed: %lu", provider_id, (unsigned long)i, rv); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1443 | continue; |
| 1444 | } |
djm@openbsd.org | b15fd98 | 2015-07-18 08:00:21 +0000 | [diff] [blame] | 1445 | if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) { |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1446 | debug2("%s: ignoring uninitialised token in " |
| 1447 | "provider %s slot %lu", __func__, |
| 1448 | provider_id, (unsigned long)i); |
djm@openbsd.org | b15fd98 | 2015-07-18 08:00:21 +0000 | [diff] [blame] | 1449 | continue; |
| 1450 | } |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1451 | rmspace(token->label, sizeof(token->label)); |
| 1452 | rmspace(token->manufacturerID, sizeof(token->manufacturerID)); |
| 1453 | rmspace(token->model, sizeof(token->model)); |
| 1454 | rmspace(token->serialNumber, sizeof(token->serialNumber)); |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1455 | debug("provider %s slot %lu: label <%s> manufacturerID <%s> " |
| 1456 | "model <%s> serial <%s> flags 0x%lx", |
| 1457 | provider_id, (unsigned long)i, |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1458 | token->label, token->manufacturerID, token->model, |
| 1459 | token->serialNumber, token->flags); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1460 | /* |
| 1461 | * open session, login with pin and retrieve public |
| 1462 | * keys (if keyp is provided) |
| 1463 | */ |
| 1464 | if ((ret = pkcs11_open_session(p, i, pin, user)) == 0) { |
| 1465 | if (keyp == NULL) |
| 1466 | continue; |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1467 | pkcs11_fetch_keys(p, i, keyp, &nkeys); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1468 | pkcs11_fetch_certs(p, i, keyp, &nkeys); |
| 1469 | } |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1470 | } |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1471 | |
| 1472 | /* now owned by caller */ |
| 1473 | *providerp = p; |
| 1474 | |
| 1475 | TAILQ_INSERT_TAIL(&pkcs11_providers, p, next); |
| 1476 | p->refcount++; /* add to provider list */ |
| 1477 | |
| 1478 | return (nkeys); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1479 | fail: |
| 1480 | if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK) |
djm@openbsd.org | efb494e | 2016-10-28 03:33:52 +0000 | [diff] [blame] | 1481 | error("C_Finalize for provider %s failed: %lu", |
| 1482 | provider_id, rv); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1483 | if (p) { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1484 | free(p->name); |
Darren Tucker | a627d42 | 2013-06-02 07:31:17 +1000 | [diff] [blame] | 1485 | free(p->slotlist); |
| 1486 | free(p->slotinfo); |
| 1487 | free(p); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1488 | } |
| 1489 | if (handle) |
| 1490 | dlclose(handle); |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1491 | return (ret); |
Damien Miller | 7ea845e | 2010-02-12 09:21:02 +1100 | [diff] [blame] | 1492 | } |
Damien Miller | dfa4156 | 2010-02-12 10:06:28 +1100 | [diff] [blame] | 1493 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1494 | /* |
| 1495 | * register a new provider and get number of keys hold by the token, |
| 1496 | * fails if provider already exists |
| 1497 | */ |
| 1498 | int |
| 1499 | pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp) |
| 1500 | { |
| 1501 | struct pkcs11_provider *p = NULL; |
| 1502 | int nkeys; |
Darren Tucker | 0dd24e0 | 2011-09-04 19:59:26 +1000 | [diff] [blame] | 1503 | |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1504 | nkeys = pkcs11_register_provider(provider_id, pin, keyp, &p, CKU_USER); |
| 1505 | |
| 1506 | /* no keys found or some other error, de-register provider */ |
| 1507 | if (nkeys <= 0 && p != NULL) { |
| 1508 | TAILQ_REMOVE(&pkcs11_providers, p, next); |
| 1509 | pkcs11_provider_finalize(p); |
| 1510 | pkcs11_provider_unref(p); |
| 1511 | } |
| 1512 | if (nkeys == 0) |
| 1513 | debug("%s: provider %s returned no keys", __func__, |
| 1514 | provider_id); |
| 1515 | |
| 1516 | return (nkeys); |
| 1517 | } |
| 1518 | |
| 1519 | #ifdef WITH_PKCS11_KEYGEN |
| 1520 | struct sshkey * |
| 1521 | pkcs11_gakp(char *provider_id, char *pin, unsigned int slotidx, char *label, |
| 1522 | unsigned int type, unsigned int bits, unsigned char keyid, u_int32_t *err) |
| 1523 | { |
| 1524 | struct pkcs11_provider *p = NULL; |
| 1525 | struct pkcs11_slotinfo *si; |
| 1526 | CK_FUNCTION_LIST *f; |
| 1527 | CK_SESSION_HANDLE session; |
| 1528 | struct sshkey *k = NULL; |
| 1529 | int ret = -1, reset_pin = 0, reset_provider = 0; |
| 1530 | CK_RV rv; |
| 1531 | |
| 1532 | *err = 0; |
| 1533 | |
| 1534 | if ((p = pkcs11_provider_lookup(provider_id)) != NULL) |
| 1535 | debug("%s: provider \"%s\" available", __func__, provider_id); |
| 1536 | else if ((ret = pkcs11_register_provider(provider_id, pin, NULL, &p, |
| 1537 | CKU_SO)) < 0) { |
| 1538 | debug("%s: could not register provider %s", __func__, |
| 1539 | provider_id); |
| 1540 | goto out; |
| 1541 | } else |
| 1542 | reset_provider = 1; |
| 1543 | |
| 1544 | f = p->function_list; |
| 1545 | si = &p->slotinfo[slotidx]; |
| 1546 | session = si->session; |
| 1547 | |
| 1548 | if ((rv = f->C_SetOperationState(session , pin, strlen(pin), |
| 1549 | CK_INVALID_HANDLE, CK_INVALID_HANDLE)) != CKR_OK) { |
| 1550 | debug("%s: could not supply SO pin: %lu", __func__, rv); |
| 1551 | reset_pin = 0; |
| 1552 | } else |
| 1553 | reset_pin = 1; |
| 1554 | |
| 1555 | switch (type) { |
| 1556 | case KEY_RSA: |
| 1557 | if ((k = pkcs11_rsa_generate_private_key(p, slotidx, label, |
| 1558 | bits, keyid, err)) == NULL) { |
| 1559 | debug("%s: failed to generate RSA key", __func__); |
| 1560 | goto out; |
| 1561 | } |
| 1562 | break; |
| 1563 | case KEY_ECDSA: |
| 1564 | if ((k = pkcs11_ecdsa_generate_private_key(p, slotidx, label, |
| 1565 | bits, keyid, err)) == NULL) { |
| 1566 | debug("%s: failed to generate ECDSA key", __func__); |
| 1567 | goto out; |
| 1568 | } |
| 1569 | break; |
| 1570 | default: |
| 1571 | *err = SSH_PKCS11_ERR_GENERIC; |
| 1572 | debug("%s: unknown type %d", __func__, type); |
| 1573 | goto out; |
| 1574 | } |
| 1575 | |
| 1576 | out: |
| 1577 | if (reset_pin) |
| 1578 | f->C_SetOperationState(session , NULL, 0, CK_INVALID_HANDLE, |
| 1579 | CK_INVALID_HANDLE); |
| 1580 | |
| 1581 | if (reset_provider) |
| 1582 | pkcs11_del_provider(provider_id); |
| 1583 | |
| 1584 | return (k); |
| 1585 | } |
| 1586 | |
| 1587 | struct sshkey * |
| 1588 | pkcs11_destroy_keypair(char *provider_id, char *pin, unsigned long slotidx, |
| 1589 | unsigned char keyid, u_int32_t *err) |
| 1590 | { |
| 1591 | struct pkcs11_provider *p = NULL; |
| 1592 | struct pkcs11_slotinfo *si; |
| 1593 | struct sshkey *k = NULL; |
| 1594 | int reset_pin = 0, reset_provider = 0; |
| 1595 | CK_ULONG nattrs; |
| 1596 | CK_FUNCTION_LIST *f; |
| 1597 | CK_SESSION_HANDLE session; |
| 1598 | CK_ATTRIBUTE attrs[16]; |
| 1599 | CK_OBJECT_CLASS key_class; |
| 1600 | CK_KEY_TYPE key_type; |
| 1601 | CK_OBJECT_HANDLE obj = CK_INVALID_HANDLE; |
| 1602 | CK_RV rv; |
| 1603 | |
| 1604 | *err = 0; |
| 1605 | |
| 1606 | if ((p = pkcs11_provider_lookup(provider_id)) != NULL) { |
| 1607 | debug("%s: using provider \"%s\"", __func__, provider_id); |
| 1608 | } else if (pkcs11_register_provider(provider_id, pin, NULL, &p, |
| 1609 | CKU_SO) < 0) { |
| 1610 | debug("%s: could not register provider %s", __func__, |
| 1611 | provider_id); |
| 1612 | goto out; |
| 1613 | } else |
| 1614 | reset_provider = 1; |
| 1615 | |
| 1616 | f = p->function_list; |
| 1617 | si = &p->slotinfo[slotidx]; |
| 1618 | session = si->session; |
| 1619 | |
| 1620 | if ((rv = f->C_SetOperationState(session , pin, strlen(pin), |
| 1621 | CK_INVALID_HANDLE, CK_INVALID_HANDLE)) != CKR_OK) { |
| 1622 | debug("%s: could not supply SO pin: %lu", __func__, rv); |
| 1623 | reset_pin = 0; |
| 1624 | } else |
| 1625 | reset_pin = 1; |
| 1626 | |
| 1627 | /* private key */ |
| 1628 | nattrs = 0; |
| 1629 | key_class = CKO_PRIVATE_KEY; |
| 1630 | FILL_ATTR(attrs, nattrs, CKA_CLASS, &key_class, sizeof(key_class)); |
| 1631 | FILL_ATTR(attrs, nattrs, CKA_ID, &keyid, sizeof(keyid)); |
| 1632 | |
| 1633 | if (pkcs11_find(p, slotidx, attrs, nattrs, &obj) == 0 && |
| 1634 | obj != CK_INVALID_HANDLE) { |
| 1635 | if ((rv = f->C_DestroyObject(session, obj)) != CKR_OK) { |
| 1636 | debug("%s: could not destroy private key 0x%hhx", |
| 1637 | __func__, keyid); |
| 1638 | *err = rv; |
| 1639 | goto out; |
| 1640 | } |
| 1641 | } |
| 1642 | |
| 1643 | /* public key */ |
| 1644 | nattrs = 0; |
| 1645 | key_class = CKO_PUBLIC_KEY; |
| 1646 | FILL_ATTR(attrs, nattrs, CKA_CLASS, &key_class, sizeof(key_class)); |
| 1647 | FILL_ATTR(attrs, nattrs, CKA_ID, &keyid, sizeof(keyid)); |
| 1648 | |
| 1649 | if (pkcs11_find(p, slotidx, attrs, nattrs, &obj) == 0 && |
| 1650 | obj != CK_INVALID_HANDLE) { |
| 1651 | |
| 1652 | /* get key type */ |
| 1653 | nattrs = 0; |
| 1654 | FILL_ATTR(attrs, nattrs, CKA_KEY_TYPE, &key_type, |
| 1655 | sizeof(key_type)); |
| 1656 | rv = f->C_GetAttributeValue(session, obj, attrs, nattrs); |
| 1657 | if (rv != CKR_OK) { |
| 1658 | debug("%s: could not get key type of public key 0x%hhx", |
| 1659 | __func__, keyid); |
| 1660 | *err = rv; |
| 1661 | key_type = -1; |
| 1662 | } |
| 1663 | if (key_type == CKK_RSA) |
| 1664 | k = pkcs11_fetch_rsa_pubkey(p, slotidx, &obj); |
| 1665 | else if (key_type == CKK_ECDSA) |
| 1666 | k = pkcs11_fetch_ecdsa_pubkey(p, slotidx, &obj); |
| 1667 | |
| 1668 | if ((rv = f->C_DestroyObject(session, obj)) != CKR_OK) { |
| 1669 | debug("%s: could not destroy public key 0x%hhx", |
| 1670 | __func__, keyid); |
| 1671 | *err = rv; |
| 1672 | goto out; |
| 1673 | } |
| 1674 | } |
| 1675 | |
| 1676 | out: |
| 1677 | if (reset_pin) |
| 1678 | f->C_SetOperationState(session , NULL, 0, CK_INVALID_HANDLE, |
| 1679 | CK_INVALID_HANDLE); |
| 1680 | |
| 1681 | if (reset_provider) |
| 1682 | pkcs11_del_provider(provider_id); |
| 1683 | |
| 1684 | return (k); |
| 1685 | } |
| 1686 | #endif /* WITH_PKCS11_KEYGEN */ |
Damien Miller | 5de6ac2 | 2019-01-21 11:44:19 +1100 | [diff] [blame] | 1687 | #else /* ENABLE_PKCS11 */ |
Darren Tucker | 0dd24e0 | 2011-09-04 19:59:26 +1000 | [diff] [blame] | 1688 | int |
| 1689 | pkcs11_init(int interactive) |
| 1690 | { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1691 | error("%s: dlopen() not supported", __func__); |
| 1692 | return (-1); |
| 1693 | } |
| 1694 | |
| 1695 | int |
| 1696 | pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp) |
| 1697 | { |
| 1698 | error("%s: dlopen() not supported", __func__); |
| 1699 | return (-1); |
Darren Tucker | 0dd24e0 | 2011-09-04 19:59:26 +1000 | [diff] [blame] | 1700 | } |
| 1701 | |
| 1702 | void |
| 1703 | pkcs11_terminate(void) |
| 1704 | { |
djm@openbsd.org | 93f0210 | 2019-01-20 22:51:37 +0000 | [diff] [blame] | 1705 | error("%s: dlopen() not supported", __func__); |
Darren Tucker | 0dd24e0 | 2011-09-04 19:59:26 +1000 | [diff] [blame] | 1706 | } |
Damien Miller | 5de6ac2 | 2019-01-21 11:44:19 +1100 | [diff] [blame] | 1707 | #endif /* ENABLE_PKCS11 */ |