1 /* $OpenBSD: p12_crt.c,v 1.20 2022/08/20 09:16:18 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 X509_digest(cert, EVP_sha1(), keyid, &keyidlen);
117 }
118
119 if (cert) {
120 bag = PKCS12_add_cert(&bags, cert);
121 if (name && !PKCS12_add_friendlyname(bag, name, -1))
122 goto err;
123 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
124 goto err;
125 }
126
127 /* Add all other certificates */
128 for (i = 0; i < sk_X509_num(ca); i++) {
129 if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
130 goto err;
131 }
132
133 if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
134 goto err;
135
136 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
137 bags = NULL;
138
139 if (pkey) {
140 bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);
141
142 if (!bag)
143 goto err;
144
145 if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
146 goto err;
147 if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
148 goto err;
149
150 if (name && !PKCS12_add_friendlyname(bag, name, -1))
151 goto err;
152 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
153 goto err;
154 }
155
156 if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
157 goto err;
158
159 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
160 bags = NULL;
161
162 p12 = PKCS12_add_safes(safes, 0);
163
164 if (!p12)
165 goto err;
166
167 sk_PKCS7_pop_free(safes, PKCS7_free);
168
169 safes = NULL;
170
171 if ((mac_iter != -1) &&
172 !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
173 goto err;
174
175 return p12;
176
177 err:
178 if (p12)
179 PKCS12_free(p12);
180 if (safes)
181 sk_PKCS7_pop_free(safes, PKCS7_free);
182 if (bags)
183 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
184 return NULL;
185 }
186
187 PKCS12_SAFEBAG *
PKCS12_add_cert(STACK_OF (PKCS12_SAFEBAG)** pbags,X509 * cert)188 PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
189 {
190 PKCS12_SAFEBAG *bag = NULL;
191 char *name;
192 int namelen = -1;
193 unsigned char *keyid;
194 int keyidlen = -1;
195
196 /* Add user certificate */
197 if (!(bag = PKCS12_x5092certbag(cert)))
198 goto err;
199
200 /* Use friendlyName and localKeyID in certificate.
201 * (if present)
202 */
203 name = (char *)X509_alias_get0(cert, &namelen);
204 if (name && !PKCS12_add_friendlyname(bag, name, namelen))
205 goto err;
206
207 keyid = X509_keyid_get0(cert, &keyidlen);
208
209 if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
210 goto err;
211
212 if (!pkcs12_add_bag(pbags, bag))
213 goto err;
214
215 return bag;
216
217 err:
218 if (bag)
219 PKCS12_SAFEBAG_free(bag);
220
221 return NULL;
222 }
223
224 PKCS12_SAFEBAG *
PKCS12_add_key(STACK_OF (PKCS12_SAFEBAG)** pbags,EVP_PKEY * key,int key_usage,int iter,int nid_key,const char * pass)225 PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags, EVP_PKEY *key, int key_usage,
226 int iter, int nid_key, const char *pass)
227 {
228 PKCS12_SAFEBAG *bag = NULL;
229 PKCS8_PRIV_KEY_INFO *p8 = NULL;
230
231 /* Make a PKCS#8 structure */
232 if (!(p8 = EVP_PKEY2PKCS8(key)))
233 goto err;
234 if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
235 goto err;
236 if (nid_key != -1) {
237 bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1,
238 NULL, 0, iter, p8);
239 PKCS8_PRIV_KEY_INFO_free(p8);
240 p8 = NULL;
241 } else {
242 bag = PKCS12_SAFEBAG_create0_p8inf(p8);
243 if (bag != NULL)
244 p8 = NULL;
245 }
246
247 if (!bag)
248 goto err;
249
250 if (!pkcs12_add_bag(pbags, bag))
251 goto err;
252
253 return bag;
254
255 err:
256 if (bag)
257 PKCS12_SAFEBAG_free(bag);
258 if (p8)
259 PKCS8_PRIV_KEY_INFO_free(p8);
260
261 return NULL;
262 }
263
264 int
PKCS12_add_safe(STACK_OF (PKCS7)** psafes,STACK_OF (PKCS12_SAFEBAG)* bags,int nid_safe,int iter,const char * pass)265 PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
266 int nid_safe, int iter, const char *pass)
267 {
268 PKCS7 *p7 = NULL;
269 int free_safes = 0;
270
271 if (!*psafes) {
272 *psafes = sk_PKCS7_new_null();
273 if (!*psafes)
274 return 0;
275 free_safes = 1;
276 } else
277 free_safes = 0;
278
279 if (nid_safe == 0)
280 nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
281
282 if (nid_safe == -1)
283 p7 = PKCS12_pack_p7data(bags);
284 else
285 p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0,
286 iter, bags);
287 if (!p7)
288 goto err;
289
290 if (!sk_PKCS7_push(*psafes, p7))
291 goto err;
292
293 return 1;
294
295 err:
296 if (free_safes) {
297 sk_PKCS7_free(*psafes);
298 *psafes = NULL;
299 }
300
301 if (p7)
302 PKCS7_free(p7);
303
304 return 0;
305 }
306
307 static int
pkcs12_add_bag(STACK_OF (PKCS12_SAFEBAG)** pbags,PKCS12_SAFEBAG * bag)308 pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, PKCS12_SAFEBAG *bag)
309 {
310 int free_bags;
311
312 if (!pbags)
313 return 1;
314 if (!*pbags) {
315 *pbags = sk_PKCS12_SAFEBAG_new_null();
316 if (!*pbags)
317 return 0;
318 free_bags = 1;
319 } else
320 free_bags = 0;
321
322 if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) {
323 if (free_bags) {
324 sk_PKCS12_SAFEBAG_free(*pbags);
325 *pbags = NULL;
326 }
327 return 0;
328 }
329
330 return 1;
331 }
332
333 PKCS12 *
PKCS12_add_safes(STACK_OF (PKCS7)* safes,int nid_p7)334 PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
335 {
336 PKCS12 *p12;
337
338 if (nid_p7 <= 0)
339 nid_p7 = NID_pkcs7_data;
340 p12 = PKCS12_init(nid_p7);
341
342 if (!p12)
343 return NULL;
344
345 if (!PKCS12_pack_authsafes(p12, safes)) {
346 PKCS12_free(p12);
347 return NULL;
348 }
349
350 return p12;
351 }
352