Annotation of src/usr.bin/ssh/ssh-pkcs11.c, Revision 1.61
1.61 ! claudio 1: /* $OpenBSD: ssh-pkcs11.c,v 1.60 2024/04/02 09:32:28 deraadt Exp $ */
1.1 markus 2: /*
3: * Copyright (c) 2010 Markus Friedl. All rights reserved.
1.28 djm 4: * Copyright (c) 2014 Pedro Martelletto. All rights reserved.
1.1 markus 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:
19: #include <sys/types.h>
20: #include <sys/queue.h>
21: #include <stdarg.h>
22: #include <stdio.h>
23:
1.28 djm 24: #include <ctype.h>
1.1 markus 25: #include <string.h>
26: #include <dlfcn.h>
27:
1.28 djm 28: #include <openssl/ecdsa.h>
1.9 markus 29: #include <openssl/x509.h>
1.28 djm 30: #include <openssl/err.h>
1.9 markus 31:
1.1 markus 32: #define CRYPTOKI_COMPAT
33: #include "pkcs11.h"
34:
35: #include "log.h"
36: #include "misc.h"
1.15 djm 37: #include "sshkey.h"
1.1 markus 38: #include "ssh-pkcs11.h"
1.52 djm 39: #include "digest.h"
1.1 markus 40: #include "xmalloc.h"
41:
42: struct pkcs11_slotinfo {
43: CK_TOKEN_INFO token;
44: CK_SESSION_HANDLE session;
45: int logged_in;
46: };
47:
48: struct pkcs11_provider {
49: char *name;
50: void *handle;
51: CK_FUNCTION_LIST *function_list;
52: CK_INFO info;
53: CK_ULONG nslots;
54: CK_SLOT_ID *slotlist;
55: struct pkcs11_slotinfo *slotinfo;
56: int valid;
57: int refcount;
58: TAILQ_ENTRY(pkcs11_provider) next;
59: };
60:
61: TAILQ_HEAD(, pkcs11_provider) pkcs11_providers;
62:
63: struct pkcs11_key {
64: struct pkcs11_provider *provider;
65: CK_ULONG slotidx;
66: char *keyid;
67: int keyid_len;
68: };
69:
70: int pkcs11_interactive = 0;
71:
1.28 djm 72: #ifdef HAVE_DLOPEN
73: static void
74: ossl_error(const char *msg)
75: {
1.35 djm 76: unsigned long e;
1.28 djm 77:
1.51 djm 78: error_f("%s", msg);
1.35 djm 79: while ((e = ERR_get_error()) != 0)
1.51 djm 80: error_f("libcrypto error: %s", ERR_error_string(e, NULL));
1.28 djm 81: }
82: #endif
83:
1.1 markus 84: int
85: pkcs11_init(int interactive)
86: {
87: pkcs11_interactive = interactive;
88: TAILQ_INIT(&pkcs11_providers);
89: return (0);
90: }
91:
92: /*
1.28 djm 93: * finalize a provider shared library, it's no longer usable.
1.1 markus 94: * however, there might still be keys referencing this provider,
1.28 djm 95: * so the actual freeing of memory is handled by pkcs11_provider_unref().
1.1 markus 96: * this is called when a provider gets unregistered.
97: */
98: static void
99: pkcs11_provider_finalize(struct pkcs11_provider *p)
100: {
101: CK_RV rv;
102: CK_ULONG i;
103:
1.54 djm 104: debug_f("provider \"%s\" refcount %d valid %d",
105: p->name, p->refcount, p->valid);
1.1 markus 106: if (!p->valid)
107: return;
108: for (i = 0; i < p->nslots; i++) {
109: if (p->slotinfo[i].session &&
110: (rv = p->function_list->C_CloseSession(
111: p->slotinfo[i].session)) != CKR_OK)
112: error("C_CloseSession failed: %lu", rv);
113: }
114: if ((rv = p->function_list->C_Finalize(NULL)) != CKR_OK)
115: error("C_Finalize failed: %lu", rv);
116: p->valid = 0;
117: p->function_list = NULL;
1.3 deraadt 118: #ifdef HAVE_DLOPEN
1.1 markus 119: dlclose(p->handle);
1.3 deraadt 120: #endif
1.1 markus 121: }
122:
123: /*
124: * remove a reference to the provider.
125: * called when a key gets destroyed or when the provider is unregistered.
126: */
127: static void
128: pkcs11_provider_unref(struct pkcs11_provider *p)
129: {
1.54 djm 130: debug_f("provider \"%s\" refcount %d", p->name, p->refcount);
1.1 markus 131: if (--p->refcount <= 0) {
132: if (p->valid)
1.54 djm 133: error_f("provider \"%s\" still valid", p->name);
1.28 djm 134: free(p->name);
1.7 djm 135: free(p->slotlist);
136: free(p->slotinfo);
137: free(p);
1.1 markus 138: }
139: }
140:
141: /* unregister all providers, keys might still point to the providers */
142: void
143: pkcs11_terminate(void)
144: {
145: struct pkcs11_provider *p;
146:
147: while ((p = TAILQ_FIRST(&pkcs11_providers)) != NULL) {
148: TAILQ_REMOVE(&pkcs11_providers, p, next);
149: pkcs11_provider_finalize(p);
150: pkcs11_provider_unref(p);
151: }
152: }
153:
154: /* lookup provider by name */
155: static struct pkcs11_provider *
156: pkcs11_provider_lookup(char *provider_id)
157: {
158: struct pkcs11_provider *p;
159:
160: TAILQ_FOREACH(p, &pkcs11_providers, next) {
1.54 djm 161: debug("check provider \"%s\"", p->name);
1.1 markus 162: if (!strcmp(provider_id, p->name))
163: return (p);
164: }
165: return (NULL);
166: }
167:
168: /* unregister provider by name */
169: int
170: pkcs11_del_provider(char *provider_id)
171: {
172: struct pkcs11_provider *p;
173:
174: if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
175: TAILQ_REMOVE(&pkcs11_providers, p, next);
176: pkcs11_provider_finalize(p);
177: pkcs11_provider_unref(p);
178: return (0);
179: }
180: return (-1);
181: }
182:
1.28 djm 183: #ifdef HAVE_DLOPEN
1.38 djm 184: static RSA_METHOD *rsa_method;
185: static int rsa_idx = 0;
186: static EC_KEY_METHOD *ec_key_method;
187: static int ec_key_idx = 0;
188:
1.34 djm 189: /* release a wrapped object */
190: static void
191: pkcs11_k11_free(void *parent, void *ptr, CRYPTO_EX_DATA *ad, int idx,
192: long argl, void *argp)
1.1 markus 193: {
1.34 djm 194: struct pkcs11_key *k11 = ptr;
1.1 markus 195:
1.51 djm 196: debug_f("parent %p ptr %p idx %d", parent, ptr, idx);
1.34 djm 197: if (k11 == NULL)
198: return;
199: if (k11->provider)
200: pkcs11_provider_unref(k11->provider);
201: free(k11->keyid);
202: free(k11);
1.1 markus 203: }
204:
1.5 markus 205: /* find a single 'obj' for given attributes */
206: static int
207: pkcs11_find(struct pkcs11_provider *p, CK_ULONG slotidx, CK_ATTRIBUTE *attr,
208: CK_ULONG nattr, CK_OBJECT_HANDLE *obj)
209: {
210: CK_FUNCTION_LIST *f;
211: CK_SESSION_HANDLE session;
212: CK_ULONG nfound = 0;
213: CK_RV rv;
214: int ret = -1;
215:
216: f = p->function_list;
217: session = p->slotinfo[slotidx].session;
218: if ((rv = f->C_FindObjectsInit(session, attr, nattr)) != CKR_OK) {
219: error("C_FindObjectsInit failed (nattr %lu): %lu", nattr, rv);
220: return (-1);
221: }
222: if ((rv = f->C_FindObjects(session, obj, 1, &nfound)) != CKR_OK ||
223: nfound != 1) {
224: debug("C_FindObjects failed (nfound %lu nattr %lu): %lu",
225: nfound, nattr, rv);
226: } else
227: ret = 0;
228: if ((rv = f->C_FindObjectsFinal(session)) != CKR_OK)
229: error("C_FindObjectsFinal failed: %lu", rv);
230: return (ret);
231: }
232:
1.1 markus 233: static int
1.45 djm 234: pkcs11_login_slot(struct pkcs11_provider *provider, struct pkcs11_slotinfo *si,
235: CK_USER_TYPE type)
1.40 djm 236: {
237: char *pin = NULL, prompt[1024];
238: CK_RV rv;
239:
1.45 djm 240: if (provider == NULL || si == NULL || !provider->valid) {
1.40 djm 241: error("no pkcs11 (valid) provider found");
242: return (-1);
243: }
244:
245: if (!pkcs11_interactive) {
246: error("need pin entry%s",
247: (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH) ?
248: " on reader keypad" : "");
249: return (-1);
250: }
251: if (si->token.flags & CKF_PROTECTED_AUTHENTICATION_PATH)
252: verbose("Deferring PIN entry to reader keypad.");
253: else {
254: snprintf(prompt, sizeof(prompt), "Enter PIN for '%s': ",
255: si->token.label);
256: if ((pin = read_passphrase(prompt, RP_ALLOW_EOF)) == NULL) {
1.51 djm 257: debug_f("no pin specified");
1.40 djm 258: return (-1); /* bail out */
259: }
260: }
1.45 djm 261: rv = provider->function_list->C_Login(si->session, type, (u_char *)pin,
1.40 djm 262: (pin != NULL) ? strlen(pin) : 0);
263: if (pin != NULL)
264: freezero(pin, strlen(pin));
1.49 djm 265:
266: switch (rv) {
267: case CKR_OK:
268: case CKR_USER_ALREADY_LOGGED_IN:
269: /* success */
270: break;
271: case CKR_PIN_LEN_RANGE:
272: error("PKCS#11 login failed: PIN length out of range");
273: return -1;
274: case CKR_PIN_INCORRECT:
275: error("PKCS#11 login failed: PIN incorrect");
276: return -1;
277: case CKR_PIN_LOCKED:
278: error("PKCS#11 login failed: PIN locked");
279: return -1;
280: default:
281: error("PKCS#11 login failed: error %lu", rv);
282: return -1;
1.40 djm 283: }
284: si->logged_in = 1;
285: return (0);
286: }
287:
288: static int
1.45 djm 289: pkcs11_login(struct pkcs11_key *k11, CK_USER_TYPE type)
290: {
291: if (k11 == NULL || k11->provider == NULL || !k11->provider->valid) {
292: error("no pkcs11 (valid) provider found");
293: return (-1);
294: }
295:
296: return pkcs11_login_slot(k11->provider,
297: &k11->provider->slotinfo[k11->slotidx], type);
298: }
299:
300:
301: static int
1.40 djm 302: pkcs11_check_obj_bool_attrib(struct pkcs11_key *k11, CK_OBJECT_HANDLE obj,
303: CK_ATTRIBUTE_TYPE type, int *val)
304: {
305: struct pkcs11_slotinfo *si;
306: CK_FUNCTION_LIST *f;
307: CK_BBOOL flag = 0;
308: CK_ATTRIBUTE attr;
309: CK_RV rv;
310:
311: *val = 0;
312:
313: if (!k11->provider || !k11->provider->valid) {
314: error("no pkcs11 (valid) provider found");
315: return (-1);
316: }
317:
318: f = k11->provider->function_list;
319: si = &k11->provider->slotinfo[k11->slotidx];
320:
321: attr.type = type;
322: attr.pValue = &flag;
323: attr.ulValueLen = sizeof(flag);
324:
325: rv = f->C_GetAttributeValue(si->session, obj, &attr, 1);
326: if (rv != CKR_OK) {
327: error("C_GetAttributeValue failed: %lu", rv);
328: return (-1);
329: }
330: *val = flag != 0;
1.54 djm 331: debug_f("provider \"%s\" slot %lu object %lu: attrib %lu = %d",
332: k11->provider->name, k11->slotidx, obj, type, *val);
1.40 djm 333: return (0);
334: }
335:
336: static int
1.28 djm 337: pkcs11_get_key(struct pkcs11_key *k11, CK_MECHANISM_TYPE mech_type)
1.1 markus 338: {
339: struct pkcs11_slotinfo *si;
340: CK_FUNCTION_LIST *f;
1.28 djm 341: CK_OBJECT_HANDLE obj;
342: CK_RV rv;
343: CK_OBJECT_CLASS private_key_class;
344: CK_BBOOL true_val;
345: CK_MECHANISM mech;
346: CK_ATTRIBUTE key_filter[3];
1.40 djm 347: int always_auth = 0;
348: int did_login = 0;
1.1 markus 349:
350: if (!k11->provider || !k11->provider->valid) {
1.28 djm 351: error("no pkcs11 (valid) provider found");
1.1 markus 352: return (-1);
353: }
1.28 djm 354:
1.1 markus 355: f = k11->provider->function_list;
356: si = &k11->provider->slotinfo[k11->slotidx];
1.28 djm 357:
1.1 markus 358: if ((si->token.flags & CKF_LOGIN_REQUIRED) && !si->logged_in) {
1.40 djm 359: if (pkcs11_login(k11, CKU_USER) < 0) {
360: error("login failed");
1.1 markus 361: return (-1);
362: }
1.40 djm 363: did_login = 1;
1.1 markus 364: }
1.28 djm 365:
366: memset(&key_filter, 0, sizeof(key_filter));
367: private_key_class = CKO_PRIVATE_KEY;
368: key_filter[0].type = CKA_CLASS;
369: key_filter[0].pValue = &private_key_class;
370: key_filter[0].ulValueLen = sizeof(private_key_class);
371:
372: key_filter[1].type = CKA_ID;
1.1 markus 373: key_filter[1].pValue = k11->keyid;
374: key_filter[1].ulValueLen = k11->keyid_len;
1.28 djm 375:
376: true_val = CK_TRUE;
377: key_filter[2].type = CKA_SIGN;
378: key_filter[2].pValue = &true_val;
379: key_filter[2].ulValueLen = sizeof(true_val);
380:
1.5 markus 381: /* try to find object w/CKA_SIGN first, retry w/o */
382: if (pkcs11_find(k11->provider, k11->slotidx, key_filter, 3, &obj) < 0 &&
383: pkcs11_find(k11->provider, k11->slotidx, key_filter, 2, &obj) < 0) {
384: error("cannot find private key");
1.28 djm 385: return (-1);
386: }
387:
388: memset(&mech, 0, sizeof(mech));
389: mech.mechanism = mech_type;
390: mech.pParameter = NULL_PTR;
391: mech.ulParameterLen = 0;
392:
393: if ((rv = f->C_SignInit(si->session, &mech, obj)) != CKR_OK) {
1.1 markus 394: error("C_SignInit failed: %lu", rv);
1.28 djm 395: return (-1);
1.40 djm 396: }
397:
398: pkcs11_check_obj_bool_attrib(k11, obj, CKA_ALWAYS_AUTHENTICATE,
399: &always_auth); /* ignore errors here */
400: if (always_auth && !did_login) {
1.51 djm 401: debug_f("always-auth key");
1.40 djm 402: if (pkcs11_login(k11, CKU_CONTEXT_SPECIFIC) < 0) {
403: error("login failed for always-auth key");
404: return (-1);
405: }
1.1 markus 406: }
1.28 djm 407:
408: return (0);
409: }
410:
411: /* openssl callback doing the actual signing operation */
412: static int
413: pkcs11_rsa_private_encrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
414: int padding)
415: {
416: struct pkcs11_key *k11;
417: struct pkcs11_slotinfo *si;
418: CK_FUNCTION_LIST *f;
419: CK_ULONG tlen = 0;
420: CK_RV rv;
421: int rval = -1;
422:
1.38 djm 423: if ((k11 = RSA_get_ex_data(rsa, rsa_idx)) == NULL) {
1.54 djm 424: error("RSA_get_ex_data failed");
1.28 djm 425: return (-1);
426: }
427:
428: if (pkcs11_get_key(k11, CKM_RSA_PKCS) == -1) {
429: error("pkcs11_get_key failed");
430: return (-1);
431: }
432:
433: f = k11->provider->function_list;
434: si = &k11->provider->slotinfo[k11->slotidx];
435: tlen = RSA_size(rsa);
436:
437: /* XXX handle CKR_BUFFER_TOO_SMALL */
438: rv = f->C_Sign(si->session, (CK_BYTE *)from, flen, to, &tlen);
439: if (rv == CKR_OK)
440: rval = tlen;
441: else
442: error("C_Sign failed: %lu", rv);
443:
1.1 markus 444: return (rval);
445: }
446:
447: static int
448: pkcs11_rsa_private_decrypt(int flen, const u_char *from, u_char *to, RSA *rsa,
449: int padding)
450: {
451: return (-1);
452: }
453:
1.33 djm 454: static int
455: pkcs11_rsa_start_wrapper(void)
456: {
457: if (rsa_method != NULL)
458: return (0);
459: rsa_method = RSA_meth_dup(RSA_get_default_method());
460: if (rsa_method == NULL)
461: return (-1);
1.34 djm 462: rsa_idx = RSA_get_ex_new_index(0, "ssh-pkcs11-rsa",
463: NULL, NULL, pkcs11_k11_free);
464: if (rsa_idx == -1)
465: return (-1);
1.33 djm 466: if (!RSA_meth_set1_name(rsa_method, "pkcs11") ||
467: !RSA_meth_set_priv_enc(rsa_method, pkcs11_rsa_private_encrypt) ||
1.34 djm 468: !RSA_meth_set_priv_dec(rsa_method, pkcs11_rsa_private_decrypt)) {
1.51 djm 469: error_f("setup pkcs11 method failed");
1.33 djm 470: return (-1);
471: }
472: return (0);
473: }
474:
1.1 markus 475: /* redirect private key operations for rsa key to pkcs11 token */
476: static int
477: pkcs11_rsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
478: CK_ATTRIBUTE *keyid_attrib, RSA *rsa)
479: {
480: struct pkcs11_key *k11;
1.33 djm 481:
482: if (pkcs11_rsa_start_wrapper() == -1)
483: return (-1);
1.1 markus 484:
485: k11 = xcalloc(1, sizeof(*k11));
486: k11->provider = provider;
487: provider->refcount++; /* provider referenced by RSA key */
488: k11->slotidx = slotidx;
489: /* identify key object on smartcard */
490: k11->keyid_len = keyid_attrib->ulValueLen;
1.22 djm 491: if (k11->keyid_len > 0) {
492: k11->keyid = xmalloc(k11->keyid_len);
493: memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
494: }
1.33 djm 495:
1.36 djm 496: RSA_set_method(rsa, rsa_method);
1.34 djm 497: RSA_set_ex_data(rsa, rsa_idx, k11);
1.1 markus 498: return (0);
499: }
500:
1.28 djm 501: /* openssl callback doing the actual signing operation */
502: static ECDSA_SIG *
503: ecdsa_do_sign(const unsigned char *dgst, int dgst_len, const BIGNUM *inv,
504: const BIGNUM *rp, EC_KEY *ec)
505: {
506: struct pkcs11_key *k11;
507: struct pkcs11_slotinfo *si;
508: CK_FUNCTION_LIST *f;
509: CK_ULONG siglen = 0, bnlen;
510: CK_RV rv;
511: ECDSA_SIG *ret = NULL;
512: u_char *sig;
1.37 djm 513: BIGNUM *r = NULL, *s = NULL;
1.28 djm 514:
1.38 djm 515: if ((k11 = EC_KEY_get_ex_data(ec, ec_key_idx)) == NULL) {
1.56 tb 516: ossl_error("EC_KEY_get_ex_data failed for ec");
1.28 djm 517: return (NULL);
518: }
519:
520: if (pkcs11_get_key(k11, CKM_ECDSA) == -1) {
521: error("pkcs11_get_key failed");
522: return (NULL);
523: }
524:
525: f = k11->provider->function_list;
526: si = &k11->provider->slotinfo[k11->slotidx];
527:
528: siglen = ECDSA_size(ec);
529: sig = xmalloc(siglen);
530:
531: /* XXX handle CKR_BUFFER_TOO_SMALL */
532: rv = f->C_Sign(si->session, (CK_BYTE *)dgst, dgst_len, sig, &siglen);
533: if (rv != CKR_OK) {
534: error("C_Sign failed: %lu", rv);
535: goto done;
536: }
1.29 djm 537: if (siglen < 64 || siglen > 132 || siglen % 2) {
1.56 tb 538: error_f("bad signature length: %lu", (u_long)siglen);
1.29 djm 539: goto done;
540: }
541: bnlen = siglen/2;
542: if ((ret = ECDSA_SIG_new()) == NULL) {
543: error("ECDSA_SIG_new failed");
544: goto done;
545: }
1.37 djm 546: if ((r = BN_bin2bn(sig, bnlen, NULL)) == NULL ||
547: (s = BN_bin2bn(sig+bnlen, bnlen, NULL)) == NULL) {
1.56 tb 548: ossl_error("BN_bin2bn failed");
1.29 djm 549: ECDSA_SIG_free(ret);
550: ret = NULL;
551: goto done;
1.28 djm 552: }
1.37 djm 553: if (!ECDSA_SIG_set0(ret, r, s)) {
1.51 djm 554: error_f("ECDSA_SIG_set0 failed");
1.37 djm 555: ECDSA_SIG_free(ret);
556: ret = NULL;
557: goto done;
558: }
559: r = s = NULL; /* now owned by ret */
560: /* success */
1.28 djm 561: done:
1.37 djm 562: BN_free(r);
563: BN_free(s);
1.28 djm 564: free(sig);
565:
566: return (ret);
567: }
568:
569: static int
570: pkcs11_ecdsa_start_wrapper(void)
571: {
572: int (*orig_sign)(int, const unsigned char *, int, unsigned char *,
573: unsigned int *, const BIGNUM *, const BIGNUM *, EC_KEY *) = NULL;
574:
575: if (ec_key_method != NULL)
576: return (0);
1.32 djm 577: ec_key_idx = EC_KEY_get_ex_new_index(0, "ssh-pkcs11-ecdsa",
578: NULL, NULL, pkcs11_k11_free);
579: if (ec_key_idx == -1)
580: return (-1);
1.28 djm 581: ec_key_method = EC_KEY_METHOD_new(EC_KEY_OpenSSL());
582: if (ec_key_method == NULL)
583: return (-1);
584: EC_KEY_METHOD_get_sign(ec_key_method, &orig_sign, NULL, NULL);
585: EC_KEY_METHOD_set_sign(ec_key_method, orig_sign, NULL, ecdsa_do_sign);
586: return (0);
587: }
588:
589: static int
590: pkcs11_ecdsa_wrap(struct pkcs11_provider *provider, CK_ULONG slotidx,
591: CK_ATTRIBUTE *keyid_attrib, EC_KEY *ec)
592: {
593: struct pkcs11_key *k11;
594:
595: if (pkcs11_ecdsa_start_wrapper() == -1)
596: return (-1);
597:
598: k11 = xcalloc(1, sizeof(*k11));
599: k11->provider = provider;
600: provider->refcount++; /* provider referenced by ECDSA key */
601: k11->slotidx = slotidx;
602: /* identify key object on smartcard */
603: k11->keyid_len = keyid_attrib->ulValueLen;
1.55 djm 604: if (k11->keyid_len > 0) {
605: k11->keyid = xmalloc(k11->keyid_len);
606: memcpy(k11->keyid, keyid_attrib->pValue, k11->keyid_len);
607: }
1.36 djm 608: EC_KEY_set_method(ec, ec_key_method);
1.32 djm 609: EC_KEY_set_ex_data(ec, ec_key_idx, k11);
1.28 djm 610:
611: return (0);
612: }
613:
1.1 markus 614: /* remove trailing spaces */
1.59 djm 615: static char *
1.8 djm 616: rmspace(u_char *buf, size_t len)
1.1 markus 617: {
618: size_t i;
619:
1.59 djm 620: if (len == 0)
621: return buf;
622: for (i = len - 1; i > 0; i--)
623: if (buf[i] == ' ')
1.1 markus 624: buf[i] = '\0';
625: else
626: break;
1.59 djm 627: return buf;
1.1 markus 628: }
1.59 djm 629: /* Used to printf fixed-width, space-padded, unterminated strings using %.*s */
630: #define RMSPACE(s) (int)sizeof(s), rmspace(s, sizeof(s))
1.1 markus 631:
632: /*
633: * open a pkcs11 session and login if required.
634: * if pin == NULL we delay login until key use
635: */
636: static int
1.28 djm 637: pkcs11_open_session(struct pkcs11_provider *p, CK_ULONG slotidx, char *pin,
638: CK_ULONG user)
1.1 markus 639: {
1.41 djm 640: struct pkcs11_slotinfo *si;
641: CK_FUNCTION_LIST *f;
1.1 markus 642: CK_RV rv;
643: CK_SESSION_HANDLE session;
1.46 djm 644: int login_required, ret;
1.1 markus 645:
646: f = p->function_list;
1.41 djm 647: si = &p->slotinfo[slotidx];
648:
649: login_required = si->token.flags & CKF_LOGIN_REQUIRED;
650:
651: /* fail early before opening session */
1.46 djm 652: if (login_required && !pkcs11_interactive &&
1.42 djm 653: (pin == NULL || strlen(pin) == 0)) {
1.1 markus 654: error("pin required");
1.28 djm 655: return (-SSH_PKCS11_ERR_PIN_REQUIRED);
1.1 markus 656: }
657: if ((rv = f->C_OpenSession(p->slotlist[slotidx], CKF_RW_SESSION|
1.41 djm 658: CKF_SERIAL_SESSION, NULL, NULL, &session)) != CKR_OK) {
1.1 markus 659: error("C_OpenSession failed: %lu", rv);
660: return (-1);
661: }
1.46 djm 662: if (login_required && pin != NULL && strlen(pin) != 0) {
663: rv = f->C_Login(session, user, (u_char *)pin, strlen(pin));
1.16 djm 664: if (rv != CKR_OK && rv != CKR_USER_ALREADY_LOGGED_IN) {
1.1 markus 665: error("C_Login failed: %lu", rv);
1.28 djm 666: ret = (rv == CKR_PIN_LOCKED) ?
667: -SSH_PKCS11_ERR_PIN_LOCKED :
668: -SSH_PKCS11_ERR_LOGIN_FAIL;
1.1 markus 669: if ((rv = f->C_CloseSession(session)) != CKR_OK)
670: error("C_CloseSession failed: %lu", rv);
1.28 djm 671: return (ret);
1.1 markus 672: }
1.41 djm 673: si->logged_in = 1;
1.1 markus 674: }
1.41 djm 675: si->session = session;
1.1 markus 676: return (0);
677: }
678:
679: static int
1.15 djm 680: pkcs11_key_included(struct sshkey ***keysp, int *nkeys, struct sshkey *key)
1.9 markus 681: {
682: int i;
683:
684: for (i = 0; i < *nkeys; i++)
1.15 djm 685: if (sshkey_equal(key, (*keysp)[i]))
1.9 markus 686: return (1);
687: return (0);
688: }
689:
1.28 djm 690: static struct sshkey *
691: pkcs11_fetch_ecdsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
692: CK_OBJECT_HANDLE *obj)
693: {
694: CK_ATTRIBUTE key_attr[3];
695: CK_SESSION_HANDLE session;
696: CK_FUNCTION_LIST *f = NULL;
697: CK_RV rv;
1.30 djm 698: ASN1_OCTET_STRING *octet = NULL;
1.28 djm 699: EC_KEY *ec = NULL;
700: EC_GROUP *group = NULL;
701: struct sshkey *key = NULL;
702: const unsigned char *attrp = NULL;
703: int i;
704: int nid;
705:
706: memset(&key_attr, 0, sizeof(key_attr));
707: key_attr[0].type = CKA_ID;
708: key_attr[1].type = CKA_EC_POINT;
709: key_attr[2].type = CKA_EC_PARAMS;
710:
711: session = p->slotinfo[slotidx].session;
712: f = p->function_list;
713:
714: /* figure out size of the attributes */
715: rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
716: if (rv != CKR_OK) {
717: error("C_GetAttributeValue failed: %lu", rv);
718: return (NULL);
719: }
720:
721: /*
722: * Allow CKA_ID (always first attribute) to be empty, but
723: * ensure that none of the others are zero length.
724: * XXX assumes CKA_ID is always first.
725: */
726: if (key_attr[1].ulValueLen == 0 ||
727: key_attr[2].ulValueLen == 0) {
728: error("invalid attribute length");
729: return (NULL);
730: }
731:
732: /* allocate buffers for attributes */
733: for (i = 0; i < 3; i++)
734: if (key_attr[i].ulValueLen > 0)
735: key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen);
736:
737: /* retrieve ID, public point and curve parameters of EC key */
738: rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
739: if (rv != CKR_OK) {
740: error("C_GetAttributeValue failed: %lu", rv);
741: goto fail;
742: }
743:
744: ec = EC_KEY_new();
745: if (ec == NULL) {
746: error("EC_KEY_new failed");
747: goto fail;
748: }
749:
750: attrp = key_attr[2].pValue;
751: group = d2i_ECPKParameters(NULL, &attrp, key_attr[2].ulValueLen);
752: if (group == NULL) {
753: ossl_error("d2i_ECPKParameters failed");
754: goto fail;
755: }
756:
757: if (EC_KEY_set_group(ec, group) == 0) {
758: ossl_error("EC_KEY_set_group failed");
759: goto fail;
760: }
761:
762: if (key_attr[1].ulValueLen <= 2) {
763: error("CKA_EC_POINT too small");
764: goto fail;
765: }
766:
1.30 djm 767: attrp = key_attr[1].pValue;
768: octet = d2i_ASN1_OCTET_STRING(NULL, &attrp, key_attr[1].ulValueLen);
769: if (octet == NULL) {
770: ossl_error("d2i_ASN1_OCTET_STRING failed");
771: goto fail;
772: }
773: attrp = octet->data;
774: if (o2i_ECPublicKey(&ec, &attrp, octet->length) == NULL) {
775: ossl_error("o2i_ECPublicKey failed");
776: goto fail;
1.28 djm 777: }
778:
779: nid = sshkey_ecdsa_key_to_nid(ec);
780: if (nid < 0) {
781: error("couldn't get curve nid");
782: goto fail;
783: }
784:
785: if (pkcs11_ecdsa_wrap(p, slotidx, &key_attr[0], ec))
786: goto fail;
787:
788: key = sshkey_new(KEY_UNSPEC);
789: if (key == NULL) {
790: error("sshkey_new failed");
791: goto fail;
792: }
793:
794: key->ecdsa = ec;
795: key->ecdsa_nid = nid;
796: key->type = KEY_ECDSA;
797: key->flags |= SSHKEY_FLAG_EXT;
798: ec = NULL; /* now owned by key */
799:
800: fail:
801: for (i = 0; i < 3; i++)
802: free(key_attr[i].pValue);
803: if (ec)
804: EC_KEY_free(ec);
805: if (group)
806: EC_GROUP_free(group);
1.30 djm 807: if (octet)
808: ASN1_OCTET_STRING_free(octet);
1.28 djm 809:
810: return (key);
811: }
812:
813: static struct sshkey *
814: pkcs11_fetch_rsa_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
815: CK_OBJECT_HANDLE *obj)
816: {
817: CK_ATTRIBUTE key_attr[3];
818: CK_SESSION_HANDLE session;
819: CK_FUNCTION_LIST *f = NULL;
820: CK_RV rv;
821: RSA *rsa = NULL;
822: BIGNUM *rsa_n, *rsa_e;
823: struct sshkey *key = NULL;
824: int i;
825:
826: memset(&key_attr, 0, sizeof(key_attr));
827: key_attr[0].type = CKA_ID;
828: key_attr[1].type = CKA_MODULUS;
829: key_attr[2].type = CKA_PUBLIC_EXPONENT;
830:
831: session = p->slotinfo[slotidx].session;
832: f = p->function_list;
833:
834: /* figure out size of the attributes */
835: rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
836: if (rv != CKR_OK) {
837: error("C_GetAttributeValue failed: %lu", rv);
838: return (NULL);
839: }
840:
841: /*
842: * Allow CKA_ID (always first attribute) to be empty, but
843: * ensure that none of the others are zero length.
844: * XXX assumes CKA_ID is always first.
845: */
846: if (key_attr[1].ulValueLen == 0 ||
847: key_attr[2].ulValueLen == 0) {
848: error("invalid attribute length");
849: return (NULL);
850: }
851:
852: /* allocate buffers for attributes */
853: for (i = 0; i < 3; i++)
854: if (key_attr[i].ulValueLen > 0)
855: key_attr[i].pValue = xcalloc(1, key_attr[i].ulValueLen);
856:
857: /* retrieve ID, modulus and public exponent of RSA key */
858: rv = f->C_GetAttributeValue(session, *obj, key_attr, 3);
859: if (rv != CKR_OK) {
860: error("C_GetAttributeValue failed: %lu", rv);
861: goto fail;
862: }
863:
864: rsa = RSA_new();
865: if (rsa == NULL) {
866: error("RSA_new failed");
867: goto fail;
868: }
869:
870: rsa_n = BN_bin2bn(key_attr[1].pValue, key_attr[1].ulValueLen, NULL);
871: rsa_e = BN_bin2bn(key_attr[2].pValue, key_attr[2].ulValueLen, NULL);
872: if (rsa_n == NULL || rsa_e == NULL) {
873: error("BN_bin2bn failed");
874: goto fail;
875: }
876: if (!RSA_set0_key(rsa, rsa_n, rsa_e, NULL))
1.51 djm 877: fatal_f("set key");
1.28 djm 878: rsa_n = rsa_e = NULL; /* transferred */
879:
880: if (pkcs11_rsa_wrap(p, slotidx, &key_attr[0], rsa))
881: goto fail;
882:
883: key = sshkey_new(KEY_UNSPEC);
884: if (key == NULL) {
885: error("sshkey_new failed");
886: goto fail;
887: }
888:
889: key->rsa = rsa;
890: key->type = KEY_RSA;
891: key->flags |= SSHKEY_FLAG_EXT;
892: rsa = NULL; /* now owned by key */
893:
894: fail:
895: for (i = 0; i < 3; i++)
896: free(key_attr[i].pValue);
897: RSA_free(rsa);
898:
899: return (key);
900: }
901:
1.47 djm 902: static int
1.28 djm 903: pkcs11_fetch_x509_pubkey(struct pkcs11_provider *p, CK_ULONG slotidx,
1.47 djm 904: CK_OBJECT_HANDLE *obj, struct sshkey **keyp, char **labelp)
1.28 djm 905: {
906: CK_ATTRIBUTE cert_attr[3];
907: CK_SESSION_HANDLE session;
908: CK_FUNCTION_LIST *f = NULL;
909: CK_RV rv;
910: X509 *x509 = NULL;
1.47 djm 911: X509_NAME *x509_name = NULL;
1.28 djm 912: EVP_PKEY *evp;
913: RSA *rsa = NULL;
914: EC_KEY *ec = NULL;
915: struct sshkey *key = NULL;
916: int i;
917: int nid;
1.47 djm 918: const u_char *cp;
919: char *subject = NULL;
920:
921: *keyp = NULL;
922: *labelp = NULL;
1.28 djm 923:
924: memset(&cert_attr, 0, sizeof(cert_attr));
925: cert_attr[0].type = CKA_ID;
926: cert_attr[1].type = CKA_SUBJECT;
927: cert_attr[2].type = CKA_VALUE;
928:
929: session = p->slotinfo[slotidx].session;
930: f = p->function_list;
931:
932: /* figure out size of the attributes */
933: rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3);
934: if (rv != CKR_OK) {
935: error("C_GetAttributeValue failed: %lu", rv);
1.47 djm 936: return -1;
1.28 djm 937: }
938:
939: /*
940: * Allow CKA_ID (always first attribute) to be empty, but
941: * ensure that none of the others are zero length.
942: * XXX assumes CKA_ID is always first.
943: */
944: if (cert_attr[1].ulValueLen == 0 ||
945: cert_attr[2].ulValueLen == 0) {
946: error("invalid attribute length");
1.47 djm 947: return -1;
1.28 djm 948: }
949:
950: /* allocate buffers for attributes */
951: for (i = 0; i < 3; i++)
952: if (cert_attr[i].ulValueLen > 0)
953: cert_attr[i].pValue = xcalloc(1, cert_attr[i].ulValueLen);
954:
955: /* retrieve ID, subject and value of certificate */
956: rv = f->C_GetAttributeValue(session, *obj, cert_attr, 3);
957: if (rv != CKR_OK) {
958: error("C_GetAttributeValue failed: %lu", rv);
1.47 djm 959: goto out;
1.28 djm 960: }
961:
1.47 djm 962: /* Decode DER-encoded cert subject */
1.53 djm 963: cp = cert_attr[1].pValue;
1.47 djm 964: if ((x509_name = d2i_X509_NAME(NULL, &cp,
965: cert_attr[1].ulValueLen)) == NULL ||
966: (subject = X509_NAME_oneline(x509_name, NULL, 0)) == NULL)
967: subject = xstrdup("invalid subject");
968: X509_NAME_free(x509_name);
1.28 djm 969:
970: cp = cert_attr[2].pValue;
1.47 djm 971: if ((x509 = d2i_X509(NULL, &cp, cert_attr[2].ulValueLen)) == NULL) {
1.28 djm 972: error("d2i_x509 failed");
1.47 djm 973: goto out;
1.28 djm 974: }
975:
1.47 djm 976: if ((evp = X509_get_pubkey(x509)) == NULL) {
1.28 djm 977: error("X509_get_pubkey failed");
1.47 djm 978: goto out;
1.28 djm 979: }
980:
981: if (EVP_PKEY_base_id(evp) == EVP_PKEY_RSA) {
982: if (EVP_PKEY_get0_RSA(evp) == NULL) {
983: error("invalid x509; no rsa key");
1.47 djm 984: goto out;
1.28 djm 985: }
986: if ((rsa = RSAPublicKey_dup(EVP_PKEY_get0_RSA(evp))) == NULL) {
987: error("RSAPublicKey_dup failed");
1.47 djm 988: goto out;
1.28 djm 989: }
990:
991: if (pkcs11_rsa_wrap(p, slotidx, &cert_attr[0], rsa))
1.47 djm 992: goto out;
1.28 djm 993:
994: key = sshkey_new(KEY_UNSPEC);
995: if (key == NULL) {
996: error("sshkey_new failed");
1.47 djm 997: goto out;
1.28 djm 998: }
999:
1000: key->rsa = rsa;
1001: key->type = KEY_RSA;
1002: key->flags |= SSHKEY_FLAG_EXT;
1003: rsa = NULL; /* now owned by key */
1004: } else if (EVP_PKEY_base_id(evp) == EVP_PKEY_EC) {
1.31 djm 1005: if (EVP_PKEY_get0_EC_KEY(evp) == NULL) {
1.28 djm 1006: error("invalid x509; no ec key");
1.47 djm 1007: goto out;
1.28 djm 1008: }
1.31 djm 1009: if ((ec = EC_KEY_dup(EVP_PKEY_get0_EC_KEY(evp))) == NULL) {
1.28 djm 1010: error("EC_KEY_dup failed");
1.47 djm 1011: goto out;
1.28 djm 1012: }
1013:
1014: nid = sshkey_ecdsa_key_to_nid(ec);
1015: if (nid < 0) {
1016: error("couldn't get curve nid");
1.47 djm 1017: goto out;
1.28 djm 1018: }
1019:
1020: if (pkcs11_ecdsa_wrap(p, slotidx, &cert_attr[0], ec))
1.47 djm 1021: goto out;
1.28 djm 1022:
1023: key = sshkey_new(KEY_UNSPEC);
1024: if (key == NULL) {
1025: error("sshkey_new failed");
1.47 djm 1026: goto out;
1.28 djm 1027: }
1028:
1029: key->ecdsa = ec;
1030: key->ecdsa_nid = nid;
1031: key->type = KEY_ECDSA;
1032: key->flags |= SSHKEY_FLAG_EXT;
1033: ec = NULL; /* now owned by key */
1.47 djm 1034: } else {
1.28 djm 1035: error("unknown certificate key type");
1.47 djm 1036: goto out;
1037: }
1038: out:
1.28 djm 1039: for (i = 0; i < 3; i++)
1040: free(cert_attr[i].pValue);
1041: X509_free(x509);
1042: RSA_free(rsa);
1043: EC_KEY_free(ec);
1.47 djm 1044: if (key == NULL) {
1045: free(subject);
1046: return -1;
1047: }
1048: /* success */
1049: *keyp = key;
1050: *labelp = subject;
1051: return 0;
1.28 djm 1052: }
1053:
1054: #if 0
1.9 markus 1055: static int
1.27 djm 1056: have_rsa_key(const RSA *rsa)
1057: {
1058: const BIGNUM *rsa_n, *rsa_e;
1059:
1060: RSA_get0_key(rsa, &rsa_n, &rsa_e, NULL);
1061: return rsa_n != NULL && rsa_e != NULL;
1062: }
1.28 djm 1063: #endif
1.27 djm 1064:
1.52 djm 1065: static void
1066: note_key(struct pkcs11_provider *p, CK_ULONG slotidx, const char *context,
1067: struct sshkey *key)
1068: {
1069: char *fp;
1070:
1071: if ((fp = sshkey_fingerprint(key, SSH_FP_HASH_DEFAULT,
1072: SSH_FP_DEFAULT)) == NULL) {
1073: error_f("sshkey_fingerprint failed");
1074: return;
1075: }
1076: debug2("%s: provider %s slot %lu: %s %s", context, p->name,
1077: (u_long)slotidx, sshkey_type(key), fp);
1078: free(fp);
1079: }
1080:
1.28 djm 1081: /*
1082: * lookup certificates for token in slot identified by slotidx,
1083: * add 'wrapped' public keys to the 'keysp' array and increment nkeys.
1084: * keysp points to an (possibly empty) array with *nkeys keys.
1085: */
1.27 djm 1086: static int
1.28 djm 1087: pkcs11_fetch_certs(struct pkcs11_provider *p, CK_ULONG slotidx,
1.47 djm 1088: struct sshkey ***keysp, char ***labelsp, int *nkeys)
1.1 markus 1089: {
1.28 djm 1090: struct sshkey *key = NULL;
1091: CK_OBJECT_CLASS key_class;
1092: CK_ATTRIBUTE key_attr[1];
1093: CK_SESSION_HANDLE session;
1094: CK_FUNCTION_LIST *f = NULL;
1095: CK_RV rv;
1096: CK_OBJECT_HANDLE obj;
1097: CK_ULONG n = 0;
1098: int ret = -1;
1.47 djm 1099: char *label;
1.28 djm 1100:
1101: memset(&key_attr, 0, sizeof(key_attr));
1102: memset(&obj, 0, sizeof(obj));
1103:
1104: key_class = CKO_CERTIFICATE;
1105: key_attr[0].type = CKA_CLASS;
1106: key_attr[0].pValue = &key_class;
1107: key_attr[0].ulValueLen = sizeof(key_class);
1.1 markus 1108:
1.28 djm 1109: session = p->slotinfo[slotidx].session;
1.1 markus 1110: f = p->function_list;
1.28 djm 1111:
1112: rv = f->C_FindObjectsInit(session, key_attr, 1);
1113: if (rv != CKR_OK) {
1.1 markus 1114: error("C_FindObjectsInit failed: %lu", rv);
1.28 djm 1115: goto fail;
1.1 markus 1116: }
1.28 djm 1117:
1.1 markus 1118: while (1) {
1.28 djm 1119: CK_CERTIFICATE_TYPE ck_cert_type;
1120:
1121: rv = f->C_FindObjects(session, &obj, 1, &n);
1122: if (rv != CKR_OK) {
1123: error("C_FindObjects failed: %lu", rv);
1124: goto fail;
1.1 markus 1125: }
1.28 djm 1126: if (n == 0)
1.1 markus 1127: break;
1.28 djm 1128:
1129: memset(&ck_cert_type, 0, sizeof(ck_cert_type));
1130: memset(&key_attr, 0, sizeof(key_attr));
1131: key_attr[0].type = CKA_CERTIFICATE_TYPE;
1132: key_attr[0].pValue = &ck_cert_type;
1133: key_attr[0].ulValueLen = sizeof(ck_cert_type);
1134:
1135: rv = f->C_GetAttributeValue(session, obj, key_attr, 1);
1136: if (rv != CKR_OK) {
1.1 markus 1137: error("C_GetAttributeValue failed: %lu", rv);
1.28 djm 1138: goto fail;
1139: }
1140:
1.47 djm 1141: key = NULL;
1142: label = NULL;
1.28 djm 1143: switch (ck_cert_type) {
1144: case CKC_X_509:
1.47 djm 1145: if (pkcs11_fetch_x509_pubkey(p, slotidx, &obj,
1146: &key, &label) != 0) {
1147: error("failed to fetch key");
1148: continue;
1149: }
1.28 djm 1150: break;
1151: default:
1.47 djm 1152: error("skipping unsupported certificate type %lu",
1153: ck_cert_type);
1.6 markus 1154: continue;
1155: }
1.52 djm 1156: note_key(p, slotidx, __func__, key);
1.28 djm 1157: if (pkcs11_key_included(keysp, nkeys, key)) {
1.52 djm 1158: debug2_f("key already included");;
1.28 djm 1159: sshkey_free(key);
1160: } else {
1161: /* expand key array and add key */
1162: *keysp = xrecallocarray(*keysp, *nkeys,
1163: *nkeys + 1, sizeof(struct sshkey *));
1164: (*keysp)[*nkeys] = key;
1.47 djm 1165: if (labelsp != NULL) {
1166: *labelsp = xrecallocarray(*labelsp, *nkeys,
1167: *nkeys + 1, sizeof(char *));
1168: (*labelsp)[*nkeys] = xstrdup((char *)label);
1169: }
1.28 djm 1170: *nkeys = *nkeys + 1;
1171: debug("have %d keys", *nkeys);
1.21 djm 1172: }
1.28 djm 1173: }
1174:
1175: ret = 0;
1176: fail:
1177: rv = f->C_FindObjectsFinal(session);
1178: if (rv != CKR_OK) {
1179: error("C_FindObjectsFinal failed: %lu", rv);
1180: ret = -1;
1181: }
1182:
1183: return (ret);
1184: }
1.21 djm 1185:
1.28 djm 1186: /*
1187: * lookup public keys for token in slot identified by slotidx,
1188: * add 'wrapped' public keys to the 'keysp' array and increment nkeys.
1189: * keysp points to an (possibly empty) array with *nkeys keys.
1190: */
1191: static int
1192: pkcs11_fetch_keys(struct pkcs11_provider *p, CK_ULONG slotidx,
1.47 djm 1193: struct sshkey ***keysp, char ***labelsp, int *nkeys)
1.28 djm 1194: {
1195: struct sshkey *key = NULL;
1196: CK_OBJECT_CLASS key_class;
1.47 djm 1197: CK_ATTRIBUTE key_attr[2];
1.28 djm 1198: CK_SESSION_HANDLE session;
1199: CK_FUNCTION_LIST *f = NULL;
1200: CK_RV rv;
1201: CK_OBJECT_HANDLE obj;
1202: CK_ULONG n = 0;
1203: int ret = -1;
1204:
1205: memset(&key_attr, 0, sizeof(key_attr));
1206: memset(&obj, 0, sizeof(obj));
1207:
1208: key_class = CKO_PUBLIC_KEY;
1209: key_attr[0].type = CKA_CLASS;
1210: key_attr[0].pValue = &key_class;
1211: key_attr[0].ulValueLen = sizeof(key_class);
1212:
1213: session = p->slotinfo[slotidx].session;
1214: f = p->function_list;
1215:
1216: rv = f->C_FindObjectsInit(session, key_attr, 1);
1217: if (rv != CKR_OK) {
1218: error("C_FindObjectsInit failed: %lu", rv);
1219: goto fail;
1220: }
1221:
1222: while (1) {
1223: CK_KEY_TYPE ck_key_type;
1.47 djm 1224: CK_UTF8CHAR label[256];
1.28 djm 1225:
1226: rv = f->C_FindObjects(session, &obj, 1, &n);
1227: if (rv != CKR_OK) {
1228: error("C_FindObjects failed: %lu", rv);
1229: goto fail;
1230: }
1231: if (n == 0)
1232: break;
1233:
1234: memset(&ck_key_type, 0, sizeof(ck_key_type));
1235: memset(&key_attr, 0, sizeof(key_attr));
1236: key_attr[0].type = CKA_KEY_TYPE;
1237: key_attr[0].pValue = &ck_key_type;
1238: key_attr[0].ulValueLen = sizeof(ck_key_type);
1.47 djm 1239: key_attr[1].type = CKA_LABEL;
1240: key_attr[1].pValue = &label;
1241: key_attr[1].ulValueLen = sizeof(label) - 1;
1.28 djm 1242:
1.47 djm 1243: rv = f->C_GetAttributeValue(session, obj, key_attr, 2);
1.28 djm 1244: if (rv != CKR_OK) {
1.1 markus 1245: error("C_GetAttributeValue failed: %lu", rv);
1.28 djm 1246: goto fail;
1247: }
1248:
1.47 djm 1249: label[key_attr[1].ulValueLen] = '\0';
1250:
1.28 djm 1251: switch (ck_key_type) {
1252: case CKK_RSA:
1253: key = pkcs11_fetch_rsa_pubkey(p, slotidx, &obj);
1254: break;
1255: case CKK_ECDSA:
1256: key = pkcs11_fetch_ecdsa_pubkey(p, slotidx, &obj);
1257: break;
1258: default:
1259: /* XXX print key type? */
1.43 markus 1260: key = NULL;
1.28 djm 1261: error("skipping unsupported key type");
1262: }
1263:
1264: if (key == NULL) {
1265: error("failed to fetch key");
1266: continue;
1267: }
1.52 djm 1268: note_key(p, slotidx, __func__, key);
1.28 djm 1269: if (pkcs11_key_included(keysp, nkeys, key)) {
1.52 djm 1270: debug2_f("key already included");;
1.28 djm 1271: sshkey_free(key);
1.1 markus 1272: } else {
1.28 djm 1273: /* expand key array and add key */
1274: *keysp = xrecallocarray(*keysp, *nkeys,
1275: *nkeys + 1, sizeof(struct sshkey *));
1276: (*keysp)[*nkeys] = key;
1.47 djm 1277: if (labelsp != NULL) {
1278: *labelsp = xrecallocarray(*labelsp, *nkeys,
1279: *nkeys + 1, sizeof(char *));
1280: (*labelsp)[*nkeys] = xstrdup((char *)label);
1281: }
1.28 djm 1282: *nkeys = *nkeys + 1;
1283: debug("have %d keys", *nkeys);
1.1 markus 1284: }
1285: }
1.28 djm 1286:
1287: ret = 0;
1288: fail:
1289: rv = f->C_FindObjectsFinal(session);
1290: if (rv != CKR_OK) {
1.1 markus 1291: error("C_FindObjectsFinal failed: %lu", rv);
1.28 djm 1292: ret = -1;
1293: }
1294:
1295: return (ret);
1296: }
1297:
1298: #ifdef WITH_PKCS11_KEYGEN
1299: #define FILL_ATTR(attr, idx, typ, val, len) \
1300: { (attr[idx]).type=(typ); (attr[idx]).pValue=(val); (attr[idx]).ulValueLen=len; idx++; }
1301:
1302: static struct sshkey *
1303: pkcs11_rsa_generate_private_key(struct pkcs11_provider *p, CK_ULONG slotidx,
1304: char *label, CK_ULONG bits, CK_BYTE keyid, u_int32_t *err)
1305: {
1306: struct pkcs11_slotinfo *si;
1307: char *plabel = label ? label : "";
1308: int npub = 0, npriv = 0;
1309: CK_RV rv;
1310: CK_FUNCTION_LIST *f;
1311: CK_SESSION_HANDLE session;
1312: CK_BBOOL true_val = CK_TRUE, false_val = CK_FALSE;
1313: CK_OBJECT_HANDLE pubKey, privKey;
1314: CK_ATTRIBUTE tpub[16], tpriv[16];
1315: CK_MECHANISM mech = {
1316: CKM_RSA_PKCS_KEY_PAIR_GEN, NULL_PTR, 0
1317: };
1318: CK_BYTE pubExponent[] = {
1319: 0x01, 0x00, 0x01 /* RSA_F4 in bytes */
1320: };
1321:
1322: *err = 0;
1323:
1324: FILL_ATTR(tpub, npub, CKA_TOKEN, &true_val, sizeof(true_val));
1325: FILL_ATTR(tpub, npub, CKA_LABEL, plabel, strlen(plabel));
1326: FILL_ATTR(tpub, npub, CKA_ENCRYPT, &false_val, sizeof(false_val));
1327: FILL_ATTR(tpub, npub, CKA_VERIFY, &true_val, sizeof(true_val));
1328: FILL_ATTR(tpub, npub, CKA_VERIFY_RECOVER, &false_val,
1329: sizeof(false_val));
1330: FILL_ATTR(tpub, npub, CKA_WRAP, &false_val, sizeof(false_val));
1331: FILL_ATTR(tpub, npub, CKA_DERIVE, &false_val, sizeof(false_val));
1332: FILL_ATTR(tpub, npub, CKA_MODULUS_BITS, &bits, sizeof(bits));
1333: FILL_ATTR(tpub, npub, CKA_PUBLIC_EXPONENT, pubExponent,
1334: sizeof(pubExponent));
1335: FILL_ATTR(tpub, npub, CKA_ID, &keyid, sizeof(keyid));
1336:
1337: FILL_ATTR(tpriv, npriv, CKA_TOKEN, &true_val, sizeof(true_val));
1338: FILL_ATTR(tpriv, npriv, CKA_LABEL, plabel, strlen(plabel));
1339: FILL_ATTR(tpriv, npriv, CKA_PRIVATE, &true_val, sizeof(true_val));
1340: FILL_ATTR(tpriv, npriv, CKA_SENSITIVE, &true_val, sizeof(true_val));
1341: FILL_ATTR(tpriv, npriv, CKA_DECRYPT, &false_val, sizeof(false_val));
1342: FILL_ATTR(tpriv, npriv, CKA_SIGN, &true_val, sizeof(true_val));
1343: FILL_ATTR(tpriv, npriv, CKA_SIGN_RECOVER, &false_val,
1344: sizeof(false_val));
1345: FILL_ATTR(tpriv, npriv, CKA_UNWRAP, &false_val, sizeof(false_val));
1346: FILL_ATTR(tpriv, npriv, CKA_DERIVE, &false_val, sizeof(false_val));
1347: FILL_ATTR(tpriv, npriv, CKA_ID, &keyid, sizeof(keyid));
1348:
1349: f = p->function_list;
1350: si = &p->slotinfo[slotidx];
1351: session = si->session;
1352:
1353: if ((rv = f->C_GenerateKeyPair(session, &mech, tpub, npub, tpriv, npriv,
1354: &pubKey, &privKey)) != CKR_OK) {
1.51 djm 1355: error_f("key generation failed: error 0x%lx", rv);
1.28 djm 1356: *err = rv;
1357: return NULL;
1358: }
1359:
1360: return pkcs11_fetch_rsa_pubkey(p, slotidx, &pubKey);
1361: }
1362:
1363: static int
1.60 deraadt 1364: h2i(char c)
1365: {
1366: if (c >= '0' && c <= '9')
1367: c -= '0';
1368: else if (c >= 'a' && c <= 'f')
1369: c -= 'a';
1370: else if (c >= 'A' && c <= 'F')
1371: c -= 'A';
1372: else
1373: return -1;
1374: return c;
1375: }
1376:
1377: static int
1.28 djm 1378: pkcs11_decode_hex(const char *hex, unsigned char **dest, size_t *rlen)
1379: {
1380: size_t i, len;
1381:
1382: if (dest)
1383: *dest = NULL;
1384: if (rlen)
1385: *rlen = 0;
1386:
1387: if ((len = strlen(hex)) % 2)
1388: return -1;
1389: len /= 2;
1390:
1391: *dest = xmalloc(len);
1392:
1393: for (i = 0; i < len; i++) {
1.60 deraadt 1394: int hi, low;
1395:
1396: hi = h2i(hex[2 * i]);
1397: lo = h2i(hex[(2 * i) + 1]);
1398: if (hi == -1 || lo == -1)
1.28 djm 1399: return -1;
1.60 deraadt 1400: (*dest)[i] = (hi << 4) | lo;
1.28 djm 1401: }
1402:
1403: if (rlen)
1404: *rlen = len;
1405:
1406: return 0;
1407: }
1408:
1409: static struct ec_curve_info {
1410: const char *name;
1411: const char *oid;
1412: const char *oid_encoded;
1413: size_t size;
1414: } ec_curve_infos[] = {
1415: {"prime256v1", "1.2.840.10045.3.1.7", "06082A8648CE3D030107", 256},
1416: {"secp384r1", "1.3.132.0.34", "06052B81040022", 384},
1417: {"secp521r1", "1.3.132.0.35", "06052B81040023", 521},
1.35 djm 1418: {NULL, NULL, NULL, 0},
1.28 djm 1419: };
1420:
1421: static struct sshkey *
1422: pkcs11_ecdsa_generate_private_key(struct pkcs11_provider *p, CK_ULONG slotidx,
1423: char *label, CK_ULONG bits, CK_BYTE keyid, u_int32_t *err)
1424: {
1425: struct pkcs11_slotinfo *si;
1426: char *plabel = label ? label : "";
1427: int i;
1428: size_t ecparams_size;
1429: unsigned char *ecparams = NULL;
1430: int npub = 0, npriv = 0;
1431: CK_RV rv;
1432: CK_FUNCTION_LIST *f;
1433: CK_SESSION_HANDLE session;
1434: CK_BBOOL true_val = CK_TRUE, false_val = CK_FALSE;
1435: CK_OBJECT_HANDLE pubKey, privKey;
1436: CK_MECHANISM mech = {
1437: CKM_EC_KEY_PAIR_GEN, NULL_PTR, 0
1438: };
1439: CK_ATTRIBUTE tpub[16], tpriv[16];
1440:
1441: *err = 0;
1442:
1443: for (i = 0; ec_curve_infos[i].name; i++) {
1444: if (ec_curve_infos[i].size == bits)
1445: break;
1446: }
1447: if (!ec_curve_infos[i].name) {
1.51 djm 1448: error_f("invalid key size %lu", bits);
1.28 djm 1449: return NULL;
1450: }
1451: if (pkcs11_decode_hex(ec_curve_infos[i].oid_encoded, &ecparams,
1452: &ecparams_size) == -1) {
1.51 djm 1453: error_f("invalid oid");
1.28 djm 1454: return NULL;
1455: }
1456:
1457: FILL_ATTR(tpub, npub, CKA_TOKEN, &true_val, sizeof(true_val));
1458: FILL_ATTR(tpub, npub, CKA_LABEL, plabel, strlen(plabel));
1459: FILL_ATTR(tpub, npub, CKA_ENCRYPT, &false_val, sizeof(false_val));
1460: FILL_ATTR(tpub, npub, CKA_VERIFY, &true_val, sizeof(true_val));
1461: FILL_ATTR(tpub, npub, CKA_VERIFY_RECOVER, &false_val,
1462: sizeof(false_val));
1463: FILL_ATTR(tpub, npub, CKA_WRAP, &false_val, sizeof(false_val));
1464: FILL_ATTR(tpub, npub, CKA_DERIVE, &false_val, sizeof(false_val));
1465: FILL_ATTR(tpub, npub, CKA_EC_PARAMS, ecparams, ecparams_size);
1466: FILL_ATTR(tpub, npub, CKA_ID, &keyid, sizeof(keyid));
1467:
1468: FILL_ATTR(tpriv, npriv, CKA_TOKEN, &true_val, sizeof(true_val));
1469: FILL_ATTR(tpriv, npriv, CKA_LABEL, plabel, strlen(plabel));
1470: FILL_ATTR(tpriv, npriv, CKA_PRIVATE, &true_val, sizeof(true_val));
1471: FILL_ATTR(tpriv, npriv, CKA_SENSITIVE, &true_val, sizeof(true_val));
1472: FILL_ATTR(tpriv, npriv, CKA_DECRYPT, &false_val, sizeof(false_val));
1473: FILL_ATTR(tpriv, npriv, CKA_SIGN, &true_val, sizeof(true_val));
1474: FILL_ATTR(tpriv, npriv, CKA_SIGN_RECOVER, &false_val,
1475: sizeof(false_val));
1476: FILL_ATTR(tpriv, npriv, CKA_UNWRAP, &false_val, sizeof(false_val));
1477: FILL_ATTR(tpriv, npriv, CKA_DERIVE, &false_val, sizeof(false_val));
1478: FILL_ATTR(tpriv, npriv, CKA_ID, &keyid, sizeof(keyid));
1479:
1480: f = p->function_list;
1481: si = &p->slotinfo[slotidx];
1482: session = si->session;
1483:
1484: if ((rv = f->C_GenerateKeyPair(session, &mech, tpub, npub, tpriv, npriv,
1485: &pubKey, &privKey)) != CKR_OK) {
1.51 djm 1486: error_f("key generation failed: error 0x%lx", rv);
1.28 djm 1487: *err = rv;
1488: return NULL;
1489: }
1490:
1491: return pkcs11_fetch_ecdsa_pubkey(p, slotidx, &pubKey);
1.1 markus 1492: }
1.28 djm 1493: #endif /* WITH_PKCS11_KEYGEN */
1.1 markus 1494:
1.28 djm 1495: /*
1496: * register a new provider, fails if provider already exists. if
1497: * keyp is provided, fetch keys.
1498: */
1499: static int
1.47 djm 1500: pkcs11_register_provider(char *provider_id, char *pin,
1501: struct sshkey ***keyp, char ***labelsp,
1.28 djm 1502: struct pkcs11_provider **providerp, CK_ULONG user)
1.1 markus 1503: {
1504: int nkeys, need_finalize = 0;
1.28 djm 1505: int ret = -1;
1.1 markus 1506: struct pkcs11_provider *p = NULL;
1507: void *handle = NULL;
1508: CK_RV (*getfunctionlist)(CK_FUNCTION_LIST **);
1509: CK_RV rv;
1510: CK_FUNCTION_LIST *f = NULL;
1511: CK_TOKEN_INFO *token;
1512: CK_ULONG i;
1513:
1.28 djm 1514: if (providerp == NULL)
1515: goto fail;
1516: *providerp = NULL;
1517:
1518: if (keyp != NULL)
1519: *keyp = NULL;
1.47 djm 1520: if (labelsp != NULL)
1521: *labelsp = NULL;
1.28 djm 1522:
1.1 markus 1523: if (pkcs11_provider_lookup(provider_id) != NULL) {
1.51 djm 1524: debug_f("provider already registered: %s", provider_id);
1.58 djm 1525: goto fail;
1526: }
1527: if (lib_contains_symbol(provider_id, "C_GetFunctionList") != 0) {
1528: error("provider %s is not a PKCS11 library", provider_id);
1.1 markus 1529: goto fail;
1530: }
1.28 djm 1531: /* open shared pkcs11-library */
1.1 markus 1532: if ((handle = dlopen(provider_id, RTLD_NOW)) == NULL) {
1533: error("dlopen %s failed: %s", provider_id, dlerror());
1534: goto fail;
1535: }
1.57 djm 1536: if ((getfunctionlist = dlsym(handle, "C_GetFunctionList")) == NULL)
1537: fatal("dlsym(C_GetFunctionList) failed: %s", dlerror());
1.1 markus 1538: p = xcalloc(1, sizeof(*p));
1539: p->name = xstrdup(provider_id);
1540: p->handle = handle;
1541: /* setup the pkcs11 callbacks */
1542: if ((rv = (*getfunctionlist)(&f)) != CKR_OK) {
1.23 djm 1543: error("C_GetFunctionList for provider %s failed: %lu",
1544: provider_id, rv);
1.1 markus 1545: goto fail;
1546: }
1547: p->function_list = f;
1548: if ((rv = f->C_Initialize(NULL)) != CKR_OK) {
1.23 djm 1549: error("C_Initialize for provider %s failed: %lu",
1550: provider_id, rv);
1.1 markus 1551: goto fail;
1552: }
1553: need_finalize = 1;
1554: if ((rv = f->C_GetInfo(&p->info)) != CKR_OK) {
1.23 djm 1555: error("C_GetInfo for provider %s failed: %lu",
1556: provider_id, rv);
1.1 markus 1557: goto fail;
1558: }
1.59 djm 1559: debug("provider %s: manufacturerID <%.*s> cryptokiVersion %d.%d"
1560: " libraryDescription <%.*s> libraryVersion %d.%d",
1.23 djm 1561: provider_id,
1.59 djm 1562: RMSPACE(p->info.manufacturerID),
1.1 markus 1563: p->info.cryptokiVersion.major,
1564: p->info.cryptokiVersion.minor,
1.59 djm 1565: RMSPACE(p->info.libraryDescription),
1.1 markus 1566: p->info.libraryVersion.major,
1567: p->info.libraryVersion.minor);
1568: if ((rv = f->C_GetSlotList(CK_TRUE, NULL, &p->nslots)) != CKR_OK) {
1569: error("C_GetSlotList failed: %lu", rv);
1570: goto fail;
1571: }
1572: if (p->nslots == 0) {
1.51 djm 1573: debug_f("provider %s returned no slots", provider_id);
1.28 djm 1574: ret = -SSH_PKCS11_ERR_NO_SLOTS;
1.1 markus 1575: goto fail;
1576: }
1577: p->slotlist = xcalloc(p->nslots, sizeof(CK_SLOT_ID));
1578: if ((rv = f->C_GetSlotList(CK_TRUE, p->slotlist, &p->nslots))
1579: != CKR_OK) {
1.23 djm 1580: error("C_GetSlotList for provider %s failed: %lu",
1581: provider_id, rv);
1.1 markus 1582: goto fail;
1583: }
1584: p->slotinfo = xcalloc(p->nslots, sizeof(struct pkcs11_slotinfo));
1585: p->valid = 1;
1586: nkeys = 0;
1587: for (i = 0; i < p->nslots; i++) {
1588: token = &p->slotinfo[i].token;
1589: if ((rv = f->C_GetTokenInfo(p->slotlist[i], token))
1590: != CKR_OK) {
1.23 djm 1591: error("C_GetTokenInfo for provider %s slot %lu "
1.51 djm 1592: "failed: %lu", provider_id, (u_long)i, rv);
1.20 djm 1593: continue;
1594: }
1595: if ((token->flags & CKF_TOKEN_INITIALIZED) == 0) {
1.51 djm 1596: debug2_f("ignoring uninitialised token in "
1597: "provider %s slot %lu", provider_id, (u_long)i);
1.1 markus 1598: continue;
1599: }
1.59 djm 1600: debug("provider %s slot %lu: label <%.*s> "
1601: "manufacturerID <%.*s> model <%.*s> serial <%.*s> "
1602: "flags 0x%lx",
1.23 djm 1603: provider_id, (unsigned long)i,
1.59 djm 1604: RMSPACE(token->label), RMSPACE(token->manufacturerID),
1605: RMSPACE(token->model), RMSPACE(token->serialNumber),
1606: token->flags);
1.28 djm 1607: /*
1608: * open session, login with pin and retrieve public
1609: * keys (if keyp is provided)
1610: */
1.45 djm 1611: if ((ret = pkcs11_open_session(p, i, pin, user)) != 0 ||
1612: keyp == NULL)
1613: continue;
1.47 djm 1614: pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys);
1615: pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys);
1.45 djm 1616: if (nkeys == 0 && !p->slotinfo[i].logged_in &&
1617: pkcs11_interactive) {
1618: /*
1619: * Some tokens require login before they will
1620: * expose keys.
1621: */
1622: if (pkcs11_login_slot(p, &p->slotinfo[i],
1623: CKU_USER) < 0) {
1624: error("login failed");
1.28 djm 1625: continue;
1.45 djm 1626: }
1.47 djm 1627: pkcs11_fetch_keys(p, i, keyp, labelsp, &nkeys);
1628: pkcs11_fetch_certs(p, i, keyp, labelsp, &nkeys);
1.28 djm 1629: }
1.1 markus 1630: }
1.28 djm 1631:
1632: /* now owned by caller */
1633: *providerp = p;
1634:
1635: TAILQ_INSERT_TAIL(&pkcs11_providers, p, next);
1636: p->refcount++; /* add to provider list */
1637:
1638: return (nkeys);
1.1 markus 1639: fail:
1640: if (need_finalize && (rv = f->C_Finalize(NULL)) != CKR_OK)
1.23 djm 1641: error("C_Finalize for provider %s failed: %lu",
1642: provider_id, rv);
1.1 markus 1643: if (p) {
1.28 djm 1644: free(p->name);
1.7 djm 1645: free(p->slotlist);
1646: free(p->slotinfo);
1647: free(p);
1.1 markus 1648: }
1649: if (handle)
1650: dlclose(handle);
1.48 markus 1651: if (ret > 0)
1652: ret = -1;
1.28 djm 1653: return (ret);
1654: }
1655:
1656: /*
1657: * register a new provider and get number of keys hold by the token,
1658: * fails if provider already exists
1659: */
1660: int
1.47 djm 1661: pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp,
1662: char ***labelsp)
1.28 djm 1663: {
1664: struct pkcs11_provider *p = NULL;
1665: int nkeys;
1666:
1.47 djm 1667: nkeys = pkcs11_register_provider(provider_id, pin, keyp, labelsp,
1668: &p, CKU_USER);
1.28 djm 1669:
1670: /* no keys found or some other error, de-register provider */
1671: if (nkeys <= 0 && p != NULL) {
1672: TAILQ_REMOVE(&pkcs11_providers, p, next);
1673: pkcs11_provider_finalize(p);
1674: pkcs11_provider_unref(p);
1675: }
1676: if (nkeys == 0)
1.51 djm 1677: debug_f("provider %s returned no keys", provider_id);
1.28 djm 1678:
1679: return (nkeys);
1680: }
1681:
1682: #ifdef WITH_PKCS11_KEYGEN
1683: struct sshkey *
1684: pkcs11_gakp(char *provider_id, char *pin, unsigned int slotidx, char *label,
1685: unsigned int type, unsigned int bits, unsigned char keyid, u_int32_t *err)
1686: {
1687: struct pkcs11_provider *p = NULL;
1688: struct pkcs11_slotinfo *si;
1689: CK_FUNCTION_LIST *f;
1690: CK_SESSION_HANDLE session;
1691: struct sshkey *k = NULL;
1692: int ret = -1, reset_pin = 0, reset_provider = 0;
1693: CK_RV rv;
1694:
1695: *err = 0;
1696:
1697: if ((p = pkcs11_provider_lookup(provider_id)) != NULL)
1.51 djm 1698: debug_f("provider \"%s\" available", provider_id);
1.47 djm 1699: else if ((ret = pkcs11_register_provider(provider_id, pin, NULL, NULL,
1700: &p, CKU_SO)) < 0) {
1.51 djm 1701: debug_f("could not register provider %s", provider_id);
1.28 djm 1702: goto out;
1703: } else
1704: reset_provider = 1;
1705:
1706: f = p->function_list;
1707: si = &p->slotinfo[slotidx];
1708: session = si->session;
1709:
1710: if ((rv = f->C_SetOperationState(session , pin, strlen(pin),
1711: CK_INVALID_HANDLE, CK_INVALID_HANDLE)) != CKR_OK) {
1.51 djm 1712: debug_f("could not supply SO pin: %lu", rv);
1.28 djm 1713: reset_pin = 0;
1714: } else
1715: reset_pin = 1;
1716:
1717: switch (type) {
1718: case KEY_RSA:
1719: if ((k = pkcs11_rsa_generate_private_key(p, slotidx, label,
1720: bits, keyid, err)) == NULL) {
1.51 djm 1721: debug_f("failed to generate RSA key");
1.28 djm 1722: goto out;
1723: }
1724: break;
1725: case KEY_ECDSA:
1726: if ((k = pkcs11_ecdsa_generate_private_key(p, slotidx, label,
1727: bits, keyid, err)) == NULL) {
1.51 djm 1728: debug_f("failed to generate ECDSA key");
1.28 djm 1729: goto out;
1730: }
1731: break;
1732: default:
1733: *err = SSH_PKCS11_ERR_GENERIC;
1.51 djm 1734: debug_f("unknown type %d", type);
1.28 djm 1735: goto out;
1736: }
1737:
1738: out:
1739: if (reset_pin)
1740: f->C_SetOperationState(session , NULL, 0, CK_INVALID_HANDLE,
1741: CK_INVALID_HANDLE);
1742:
1743: if (reset_provider)
1744: pkcs11_del_provider(provider_id);
1745:
1746: return (k);
1747: }
1748:
1749: struct sshkey *
1750: pkcs11_destroy_keypair(char *provider_id, char *pin, unsigned long slotidx,
1751: unsigned char keyid, u_int32_t *err)
1752: {
1753: struct pkcs11_provider *p = NULL;
1754: struct pkcs11_slotinfo *si;
1755: struct sshkey *k = NULL;
1756: int reset_pin = 0, reset_provider = 0;
1757: CK_ULONG nattrs;
1758: CK_FUNCTION_LIST *f;
1759: CK_SESSION_HANDLE session;
1760: CK_ATTRIBUTE attrs[16];
1761: CK_OBJECT_CLASS key_class;
1762: CK_KEY_TYPE key_type;
1763: CK_OBJECT_HANDLE obj = CK_INVALID_HANDLE;
1764: CK_RV rv;
1765:
1766: *err = 0;
1767:
1768: if ((p = pkcs11_provider_lookup(provider_id)) != NULL) {
1.51 djm 1769: debug_f("using provider \"%s\"", provider_id);
1.47 djm 1770: } else if (pkcs11_register_provider(provider_id, pin, NULL, NULL, &p,
1.28 djm 1771: CKU_SO) < 0) {
1.51 djm 1772: debug_f("could not register provider %s",
1.28 djm 1773: provider_id);
1774: goto out;
1775: } else
1776: reset_provider = 1;
1777:
1778: f = p->function_list;
1779: si = &p->slotinfo[slotidx];
1780: session = si->session;
1781:
1782: if ((rv = f->C_SetOperationState(session , pin, strlen(pin),
1783: CK_INVALID_HANDLE, CK_INVALID_HANDLE)) != CKR_OK) {
1.51 djm 1784: debug_f("could not supply SO pin: %lu", rv);
1.28 djm 1785: reset_pin = 0;
1786: } else
1787: reset_pin = 1;
1788:
1789: /* private key */
1790: nattrs = 0;
1791: key_class = CKO_PRIVATE_KEY;
1792: FILL_ATTR(attrs, nattrs, CKA_CLASS, &key_class, sizeof(key_class));
1793: FILL_ATTR(attrs, nattrs, CKA_ID, &keyid, sizeof(keyid));
1794:
1795: if (pkcs11_find(p, slotidx, attrs, nattrs, &obj) == 0 &&
1796: obj != CK_INVALID_HANDLE) {
1797: if ((rv = f->C_DestroyObject(session, obj)) != CKR_OK) {
1.51 djm 1798: debug_f("could not destroy private key 0x%hhx",
1799: keyid);
1.28 djm 1800: *err = rv;
1801: goto out;
1802: }
1803: }
1804:
1805: /* public key */
1806: nattrs = 0;
1807: key_class = CKO_PUBLIC_KEY;
1808: FILL_ATTR(attrs, nattrs, CKA_CLASS, &key_class, sizeof(key_class));
1809: FILL_ATTR(attrs, nattrs, CKA_ID, &keyid, sizeof(keyid));
1810:
1811: if (pkcs11_find(p, slotidx, attrs, nattrs, &obj) == 0 &&
1812: obj != CK_INVALID_HANDLE) {
1813:
1814: /* get key type */
1815: nattrs = 0;
1816: FILL_ATTR(attrs, nattrs, CKA_KEY_TYPE, &key_type,
1817: sizeof(key_type));
1818: rv = f->C_GetAttributeValue(session, obj, attrs, nattrs);
1819: if (rv != CKR_OK) {
1.51 djm 1820: debug_f("could not get key type of public key 0x%hhx",
1821: keyid);
1.28 djm 1822: *err = rv;
1823: key_type = -1;
1824: }
1825: if (key_type == CKK_RSA)
1826: k = pkcs11_fetch_rsa_pubkey(p, slotidx, &obj);
1827: else if (key_type == CKK_ECDSA)
1828: k = pkcs11_fetch_ecdsa_pubkey(p, slotidx, &obj);
1829:
1830: if ((rv = f->C_DestroyObject(session, obj)) != CKR_OK) {
1.51 djm 1831: debug_f("could not destroy public key 0x%hhx", keyid);
1.28 djm 1832: *err = rv;
1833: goto out;
1834: }
1835: }
1836:
1837: out:
1838: if (reset_pin)
1839: f->C_SetOperationState(session , NULL, 0, CK_INVALID_HANDLE,
1840: CK_INVALID_HANDLE);
1841:
1842: if (reset_provider)
1843: pkcs11_del_provider(provider_id);
1844:
1845: return (k);
1.1 markus 1846: }
1.28 djm 1847: #endif /* WITH_PKCS11_KEYGEN */
1.2 markus 1848: #else
1849: int
1.50 djm 1850: pkcs11_add_provider(char *provider_id, char *pin, struct sshkey ***keyp,
1851: char ***labelsp)
1.2 markus 1852: {
1853: error("dlopen() not supported");
1854: return (-1);
1855: }
1.28 djm 1856: #endif /* HAVE_DLOPEN */
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