1 /* $OpenBSD: p12_crt.c,v 1.24 2024/03/24 06:48:03 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
64 #include "pkcs12_local.h"
65
66 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
67 PKCS12_SAFEBAG *bag);
68
69 static int
copy_bag_attr(PKCS12_SAFEBAG * bag,EVP_PKEY * pkey,int nid)70 copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)
71 {
72 int idx;
73 X509_ATTRIBUTE *attr;
74
75 idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1);
76 if (idx < 0)
77 return 1;
78 attr = EVP_PKEY_get_attr(pkey, idx);
79 if (!X509at_add1_attr(&bag->attrib, attr))
80 return 0;
81 return 1;
82 }
83
84 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)85 PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *cert,
86 STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter, int mac_iter,
87 int keytype)
88 {
89 PKCS12 *p12 = NULL;
90 STACK_OF(PKCS7) *safes = NULL;
91 STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
92 PKCS12_SAFEBAG *bag = NULL;
93 int i;
94 unsigned char keyid[EVP_MAX_MD_SIZE];
95 unsigned int keyidlen = 0;
96
97 /* Set defaults */
98 if (!nid_cert) {
99 nid_cert = NID_pbe_WithSHA1And40BitRC2_CBC;
100 }
101 if (!nid_key)
102 nid_key = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
103 if (!iter)
104 iter = PKCS12_DEFAULT_ITER;
105 if (!mac_iter)
106 mac_iter = 1;
107
108 if (!pkey && !cert && !ca) {
109 PKCS12error(PKCS12_R_INVALID_NULL_ARGUMENT);
110 return NULL;
111 }
112
113 if (pkey && cert) {
114 if (!X509_check_private_key(cert, pkey))
115 return NULL;
116 if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen))
117 return NULL;
118 }
119
120 if (cert) {
121 bag = PKCS12_add_cert(&bags, cert);
122 if (name && !PKCS12_add_friendlyname(bag, name, -1))
123 goto err;
124 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
125 goto err;
126 }
127
128 /* Add all other certificates */
129 for (i = 0; i < sk_X509_num(ca); i++) {
130 if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
131 goto err;
132 }
133
134 if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
135 goto err;
136
137 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
138 bags = NULL;
139
140 if (pkey) {
141 bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);
142
143 if (!bag)
144 goto err;
145
146 if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
147 goto err;
148 if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
149 goto err;
150
151 if (name && !PKCS12_add_friendlyname(bag, name, -1))
152 goto err;
153 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
154 goto err;
155 }
156
157 if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
158 goto err;
159
160 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
161 bags = NULL;
162
163 p12 = PKCS12_add_safes(safes, 0);
164
165 if (!p12)
166 goto err;
167
168 sk_PKCS7_pop_free(safes, PKCS7_free);
169
170 safes = NULL;
171
172 if ((mac_iter != -1) &&
173 !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
174 goto err;
175
176 return p12;
177
178 err:
179 if (p12)
180 PKCS12_free(p12);
181 if (safes)
182 sk_PKCS7_pop_free(safes, PKCS7_free);
183 if (bags)
184 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
185 return NULL;
186 }
187 LCRYPTO_ALIAS(PKCS12_create);
188
189 PKCS12_SAFEBAG *
PKCS12_add_cert(STACK_OF (PKCS12_SAFEBAG)** pbags,X509 * cert)190 PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
191 {
192 PKCS12_SAFEBAG *bag = NULL;
193 char *name;
194 int namelen = -1;
195 unsigned char *keyid;
196 int keyidlen = -1;
197
198 /* Add user certificate */
199 if (!(bag = PKCS12_x5092certbag(cert)))
200 goto err;
201
202 /* Use friendlyName and localKeyID in certificate.
203 * (if present)
204 */
205 name = (char *)X509_alias_get0(cert, &namelen);
206 if (name && !PKCS12_add_friendlyname(bag, name, namelen))
207 goto err;
208
209 keyid = X509_keyid_get0(cert, &keyidlen);
210
211 if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
212 goto err;
213
214 if (!pkcs12_add_bag(pbags, bag))
215 goto err;
216
217 return bag;
218
219 err:
220 if (bag)
221 PKCS12_SAFEBAG_free(bag);
222
223 return NULL;
224 }
225
226 PKCS12_SAFEBAG *
PKCS12_add_key(STACK_OF (PKCS12_SAFEBAG)** pbags,EVP_PKEY * key,int key_usage,int iter,int nid_key,const char * pass)227 PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags, EVP_PKEY *key, int key_usage,
228 int iter, int nid_key, const char *pass)
229 {
230 PKCS12_SAFEBAG *bag = NULL;
231 PKCS8_PRIV_KEY_INFO *p8 = NULL;
232
233 /* Make a PKCS#8 structure */
234 if (!(p8 = EVP_PKEY2PKCS8(key)))
235 goto err;
236 if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
237 goto err;
238 if (nid_key != -1) {
239 bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1,
240 NULL, 0, iter, p8);
241 PKCS8_PRIV_KEY_INFO_free(p8);
242 p8 = NULL;
243 } else {
244 bag = PKCS12_SAFEBAG_create0_p8inf(p8);
245 if (bag != NULL)
246 p8 = NULL;
247 }
248
249 if (!bag)
250 goto err;
251
252 if (!pkcs12_add_bag(pbags, bag))
253 goto err;
254
255 return bag;
256
257 err:
258 if (bag)
259 PKCS12_SAFEBAG_free(bag);
260 if (p8)
261 PKCS8_PRIV_KEY_INFO_free(p8);
262
263 return NULL;
264 }
265
266 int
PKCS12_add_safe(STACK_OF (PKCS7)** psafes,STACK_OF (PKCS12_SAFEBAG)* bags,int nid_safe,int iter,const char * pass)267 PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
268 int nid_safe, int iter, const char *pass)
269 {
270 PKCS7 *p7 = NULL;
271 int free_safes = 0;
272
273 if (!*psafes) {
274 *psafes = sk_PKCS7_new_null();
275 if (!*psafes)
276 return 0;
277 free_safes = 1;
278 } else
279 free_safes = 0;
280
281 if (nid_safe == 0)
282 nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
283
284 if (nid_safe == -1)
285 p7 = PKCS12_pack_p7data(bags);
286 else
287 p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0,
288 iter, bags);
289 if (!p7)
290 goto err;
291
292 if (!sk_PKCS7_push(*psafes, p7))
293 goto err;
294
295 return 1;
296
297 err:
298 if (free_safes) {
299 sk_PKCS7_free(*psafes);
300 *psafes = NULL;
301 }
302
303 if (p7)
304 PKCS7_free(p7);
305
306 return 0;
307 }
308
309 static int
pkcs12_add_bag(STACK_OF (PKCS12_SAFEBAG)** pbags,PKCS12_SAFEBAG * bag)310 pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, PKCS12_SAFEBAG *bag)
311 {
312 int free_bags;
313
314 if (!pbags)
315 return 1;
316 if (!*pbags) {
317 *pbags = sk_PKCS12_SAFEBAG_new_null();
318 if (!*pbags)
319 return 0;
320 free_bags = 1;
321 } else
322 free_bags = 0;
323
324 if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) {
325 if (free_bags) {
326 sk_PKCS12_SAFEBAG_free(*pbags);
327 *pbags = NULL;
328 }
329 return 0;
330 }
331
332 return 1;
333 }
334
335 PKCS12 *
PKCS12_add_safes(STACK_OF (PKCS7)* safes,int nid_p7)336 PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
337 {
338 PKCS12 *p12;
339
340 if (nid_p7 <= 0)
341 nid_p7 = NID_pkcs7_data;
342 p12 = PKCS12_init(nid_p7);
343
344 if (!p12)
345 return NULL;
346
347 if (!PKCS12_pack_authsafes(p12, safes)) {
348 PKCS12_free(p12);
349 return NULL;
350 }
351
352 return p12;
353 }
354