1 /* $OpenBSD: p12_crt.c,v 1.25 2024/07/15 15:43:25 tb Exp $ */
2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
3 * project.
4 */
5 /* ====================================================================
6 * Copyright (c) 1999-2002 The OpenSSL Project. All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in
17 * the documentation and/or other materials provided with the
18 * distribution.
19 *
20 * 3. All advertising materials mentioning features or use of this
21 * software must display the following acknowledgment:
22 * "This product includes software developed by the OpenSSL Project
23 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
24 *
25 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
26 * endorse or promote products derived from this software without
27 * prior written permission. For written permission, please contact
28 * licensing@OpenSSL.org.
29 *
30 * 5. Products derived from this software may not be called "OpenSSL"
31 * nor may "OpenSSL" appear in their names without prior written
32 * permission of the OpenSSL Project.
33 *
34 * 6. Redistributions of any form whatsoever must retain the following
35 * acknowledgment:
36 * "This product includes software developed by the OpenSSL Project
37 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
38 *
39 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
40 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
41 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
42 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
43 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
44 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
45 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
46 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
47 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
48 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
49 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
50 * OF THE POSSIBILITY OF SUCH DAMAGE.
51 * ====================================================================
52 *
53 * This product includes cryptographic software written by Eric Young
54 * (eay@cryptsoft.com). This product includes software written by Tim
55 * Hudson (tjh@cryptsoft.com).
56 *
57 */
58
59 #include <stdio.h>
60
61 #include <openssl/err.h>
62 #include <openssl/pkcs12.h>
63 #include <openssl/x509.h>
64
65 #include "evp_local.h"
66 #include "pkcs12_local.h"
67 #include "x509_local.h"
68
69 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
70 PKCS12_SAFEBAG *bag);
71
72 static int
copy_bag_attr(PKCS12_SAFEBAG * bag,EVP_PKEY * pkey,int nid)73 copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)
74 {
75 X509_ATTRIBUTE *attr = NULL;
76 const ASN1_OBJECT *obj;
77 int i;
78
79 if ((obj = OBJ_nid2obj(nid)) == NULL) {
80 /* XXX - this seems wrong but preserves behavior. */
81 return 1;
82 }
83
84 for (i = 0; i < sk_X509_ATTRIBUTE_num(pkey->attributes); i++) {
85 attr = sk_X509_ATTRIBUTE_value(pkey->attributes, i);
86 if (OBJ_cmp(attr->object, obj) == 0)
87 break;
88 attr = NULL;
89 }
90
91 if (attr == NULL)
92 return 1;
93
94 if (!X509at_add1_attr(&bag->attrib, attr))
95 return 0;
96 return 1;
97 }
98
99 PKCS12 *
PKCS12_create(const char * pass,const char * name,EVP_PKEY * pkey,X509 * cert,STACK_OF (X509)* ca,int nid_key,int nid_cert,int iter,int mac_iter,int keytype)100 PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *cert,
101 STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter, int mac_iter,
102 int keytype)
103 {
104 PKCS12 *p12 = NULL;
105 STACK_OF(PKCS7) *safes = NULL;
106 STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
107 PKCS12_SAFEBAG *bag = NULL;
108 int i;
109 unsigned char keyid[EVP_MAX_MD_SIZE];
110 unsigned int keyidlen = 0;
111
112 /* Set defaults */
113 if (!nid_cert) {
114 nid_cert = NID_pbe_WithSHA1And40BitRC2_CBC;
115 }
116 if (!nid_key)
117 nid_key = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
118 if (!iter)
119 iter = PKCS12_DEFAULT_ITER;
120 if (!mac_iter)
121 mac_iter = 1;
122
123 if (!pkey && !cert && !ca) {
124 PKCS12error(PKCS12_R_INVALID_NULL_ARGUMENT);
125 return NULL;
126 }
127
128 if (pkey && cert) {
129 if (!X509_check_private_key(cert, pkey))
130 return NULL;
131 if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen))
132 return NULL;
133 }
134
135 if (cert) {
136 bag = PKCS12_add_cert(&bags, cert);
137 if (name && !PKCS12_add_friendlyname(bag, name, -1))
138 goto err;
139 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
140 goto err;
141 }
142
143 /* Add all other certificates */
144 for (i = 0; i < sk_X509_num(ca); i++) {
145 if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
146 goto err;
147 }
148
149 if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
150 goto err;
151
152 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
153 bags = NULL;
154
155 if (pkey) {
156 bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);
157
158 if (!bag)
159 goto err;
160
161 if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
162 goto err;
163 if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
164 goto err;
165
166 if (name && !PKCS12_add_friendlyname(bag, name, -1))
167 goto err;
168 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
169 goto err;
170 }
171
172 if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
173 goto err;
174
175 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
176 bags = NULL;
177
178 p12 = PKCS12_add_safes(safes, 0);
179
180 if (!p12)
181 goto err;
182
183 sk_PKCS7_pop_free(safes, PKCS7_free);
184
185 safes = NULL;
186
187 if ((mac_iter != -1) &&
188 !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
189 goto err;
190
191 return p12;
192
193 err:
194 if (p12)
195 PKCS12_free(p12);
196 if (safes)
197 sk_PKCS7_pop_free(safes, PKCS7_free);
198 if (bags)
199 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
200 return NULL;
201 }
202 LCRYPTO_ALIAS(PKCS12_create);
203
204 PKCS12_SAFEBAG *
PKCS12_add_cert(STACK_OF (PKCS12_SAFEBAG)** pbags,X509 * cert)205 PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
206 {
207 PKCS12_SAFEBAG *bag = NULL;
208 char *name;
209 int namelen = -1;
210 unsigned char *keyid;
211 int keyidlen = -1;
212
213 /* Add user certificate */
214 if (!(bag = PKCS12_x5092certbag(cert)))
215 goto err;
216
217 /* Use friendlyName and localKeyID in certificate.
218 * (if present)
219 */
220 name = (char *)X509_alias_get0(cert, &namelen);
221 if (name && !PKCS12_add_friendlyname(bag, name, namelen))
222 goto err;
223
224 keyid = X509_keyid_get0(cert, &keyidlen);
225
226 if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
227 goto err;
228
229 if (!pkcs12_add_bag(pbags, bag))
230 goto err;
231
232 return bag;
233
234 err:
235 if (bag)
236 PKCS12_SAFEBAG_free(bag);
237
238 return NULL;
239 }
240
241 PKCS12_SAFEBAG *
PKCS12_add_key(STACK_OF (PKCS12_SAFEBAG)** pbags,EVP_PKEY * key,int key_usage,int iter,int nid_key,const char * pass)242 PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags, EVP_PKEY *key, int key_usage,
243 int iter, int nid_key, const char *pass)
244 {
245 PKCS12_SAFEBAG *bag = NULL;
246 PKCS8_PRIV_KEY_INFO *p8 = NULL;
247
248 /* Make a PKCS#8 structure */
249 if (!(p8 = EVP_PKEY2PKCS8(key)))
250 goto err;
251 if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
252 goto err;
253 if (nid_key != -1) {
254 bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1,
255 NULL, 0, iter, p8);
256 PKCS8_PRIV_KEY_INFO_free(p8);
257 p8 = NULL;
258 } else {
259 bag = PKCS12_SAFEBAG_create0_p8inf(p8);
260 if (bag != NULL)
261 p8 = NULL;
262 }
263
264 if (!bag)
265 goto err;
266
267 if (!pkcs12_add_bag(pbags, bag))
268 goto err;
269
270 return bag;
271
272 err:
273 if (bag)
274 PKCS12_SAFEBAG_free(bag);
275 if (p8)
276 PKCS8_PRIV_KEY_INFO_free(p8);
277
278 return NULL;
279 }
280
281 int
PKCS12_add_safe(STACK_OF (PKCS7)** psafes,STACK_OF (PKCS12_SAFEBAG)* bags,int nid_safe,int iter,const char * pass)282 PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
283 int nid_safe, int iter, const char *pass)
284 {
285 PKCS7 *p7 = NULL;
286 int free_safes = 0;
287
288 if (!*psafes) {
289 *psafes = sk_PKCS7_new_null();
290 if (!*psafes)
291 return 0;
292 free_safes = 1;
293 } else
294 free_safes = 0;
295
296 if (nid_safe == 0)
297 nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
298
299 if (nid_safe == -1)
300 p7 = PKCS12_pack_p7data(bags);
301 else
302 p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0,
303 iter, bags);
304 if (!p7)
305 goto err;
306
307 if (!sk_PKCS7_push(*psafes, p7))
308 goto err;
309
310 return 1;
311
312 err:
313 if (free_safes) {
314 sk_PKCS7_free(*psafes);
315 *psafes = NULL;
316 }
317
318 if (p7)
319 PKCS7_free(p7);
320
321 return 0;
322 }
323
324 static int
pkcs12_add_bag(STACK_OF (PKCS12_SAFEBAG)** pbags,PKCS12_SAFEBAG * bag)325 pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, PKCS12_SAFEBAG *bag)
326 {
327 int free_bags;
328
329 if (!pbags)
330 return 1;
331 if (!*pbags) {
332 *pbags = sk_PKCS12_SAFEBAG_new_null();
333 if (!*pbags)
334 return 0;
335 free_bags = 1;
336 } else
337 free_bags = 0;
338
339 if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) {
340 if (free_bags) {
341 sk_PKCS12_SAFEBAG_free(*pbags);
342 *pbags = NULL;
343 }
344 return 0;
345 }
346
347 return 1;
348 }
349
350 PKCS12 *
PKCS12_add_safes(STACK_OF (PKCS7)* safes,int nid_p7)351 PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
352 {
353 PKCS12 *p12;
354
355 if (nid_p7 <= 0)
356 nid_p7 = NID_pkcs7_data;
357 p12 = PKCS12_init(nid_p7);
358
359 if (!p12)
360 return NULL;
361
362 if (!PKCS12_pack_authsafes(p12, safes)) {
363 PKCS12_free(p12);
364 return NULL;
365 }
366
367 return p12;
368 }
369