1 /*
2 * Copyright 1999-2021 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10 #include <stdio.h>
11 #include "internal/cryptlib.h"
12 #include <openssl/pkcs12.h>
13 #include "p12_local.h"
14
15 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
16 PKCS12_SAFEBAG *bag);
17
copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)18 static int copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)
19 {
20 int idx;
21 X509_ATTRIBUTE *attr;
22 idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1);
23 if (idx < 0)
24 return 1;
25 attr = EVP_PKEY_get_attr(pkey, idx);
26 if (!X509at_add1_attr(&bag->attrib, attr))
27 return 0;
28 return 1;
29 }
30
PKCS12_create_ex(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, OSSL_LIB_CTX *ctx, const char *propq)31 PKCS12 *PKCS12_create_ex(const char *pass, const char *name, EVP_PKEY *pkey,
32 X509 *cert, STACK_OF(X509) *ca, int nid_key, int nid_cert,
33 int iter, int mac_iter, int keytype,
34 OSSL_LIB_CTX *ctx, const char *propq)
35 {
36 PKCS12 *p12 = NULL;
37 STACK_OF(PKCS7) *safes = NULL;
38 STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
39 PKCS12_SAFEBAG *bag = NULL;
40 int i;
41 unsigned char keyid[EVP_MAX_MD_SIZE];
42 unsigned int keyidlen = 0;
43
44 /* Set defaults */
45 if (nid_cert == NID_undef)
46 nid_cert = NID_aes_256_cbc;
47 if (nid_key == NID_undef)
48 nid_key = NID_aes_256_cbc;
49 if (!iter)
50 iter = PKCS12_DEFAULT_ITER;
51 if (!mac_iter)
52 mac_iter = PKCS12_DEFAULT_ITER;
53
54 if (pkey == NULL && cert == NULL && ca == NULL) {
55 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_INVALID_NULL_ARGUMENT);
56 return NULL;
57 }
58
59 if (pkey && cert) {
60 if (!X509_check_private_key(cert, pkey))
61 return NULL;
62 if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen))
63 return NULL;
64 }
65
66 if (cert) {
67 bag = PKCS12_add_cert(&bags, cert);
68 if (name && !PKCS12_add_friendlyname(bag, name, -1))
69 goto err;
70 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
71 goto err;
72 }
73
74 /* Add all other certificates */
75 for (i = 0; i < sk_X509_num(ca); i++) {
76 if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
77 goto err;
78 }
79
80 if (bags && !PKCS12_add_safe_ex(&safes, bags, nid_cert, iter, pass,
81 ctx, propq))
82 goto err;
83
84 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
85 bags = NULL;
86
87 if (pkey) {
88 bag = PKCS12_add_key_ex(&bags, pkey, keytype, iter, nid_key, pass,
89 ctx, propq);
90
91 if (!bag)
92 goto err;
93
94 if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
95 goto err;
96 if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
97 goto err;
98
99 if (name && !PKCS12_add_friendlyname(bag, name, -1))
100 goto err;
101 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
102 goto err;
103 }
104
105 if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
106 goto err;
107
108 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
109 bags = NULL;
110
111 p12 = PKCS12_add_safes_ex(safes, 0, ctx, propq);
112
113 if (p12 == NULL)
114 goto err;
115
116 sk_PKCS7_pop_free(safes, PKCS7_free);
117
118 safes = NULL;
119
120 if ((mac_iter != -1) &&
121 !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
122 goto err;
123
124 return p12;
125
126 err:
127 PKCS12_free(p12);
128 sk_PKCS7_pop_free(safes, PKCS7_free);
129 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
130 return NULL;
131
132 }
133
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)134 PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *cert,
135 STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter,
136 int mac_iter, int keytype)
137 {
138 return PKCS12_create_ex(pass, name, pkey, cert, ca, nid_key, nid_cert,
139 iter, mac_iter, keytype, NULL, NULL);
140 }
141
STACK_OFnull142 PKCS12_SAFEBAG *PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
143 {
144 PKCS12_SAFEBAG *bag = NULL;
145 char *name;
146 int namelen = -1;
147 unsigned char *keyid;
148 int keyidlen = -1;
149
150 /* Add user certificate */
151 if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL)
152 goto err;
153
154 /*
155 * Use friendlyName and localKeyID in certificate. (if present)
156 */
157
158 name = (char *)X509_alias_get0(cert, &namelen);
159
160 if (name && !PKCS12_add_friendlyname(bag, name, namelen))
161 goto err;
162
163 keyid = X509_keyid_get0(cert, &keyidlen);
164
165 if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
166 goto err;
167
168 if (!pkcs12_add_bag(pbags, bag))
169 goto err;
170
171 return bag;
172
173 err:
174 PKCS12_SAFEBAG_free(bag);
175 return NULL;
176
177 }
178
STACK_OFnull179 PKCS12_SAFEBAG *PKCS12_add_key_ex(STACK_OF(PKCS12_SAFEBAG) **pbags,
180 EVP_PKEY *key, int key_usage, int iter,
181 int nid_key, const char *pass,
182 OSSL_LIB_CTX *ctx, const char *propq)
183 {
184
185 PKCS12_SAFEBAG *bag = NULL;
186 PKCS8_PRIV_KEY_INFO *p8 = NULL;
187
188 /* Make a PKCS#8 structure */
189 if ((p8 = EVP_PKEY2PKCS8(key)) == NULL)
190 goto err;
191 if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
192 goto err;
193 if (nid_key != -1) {
194 /* This call does not take ownership of p8 */
195 bag = PKCS12_SAFEBAG_create_pkcs8_encrypt_ex(nid_key, pass, -1, NULL, 0,
196 iter, p8, ctx, propq);
197 } else {
198 bag = PKCS12_SAFEBAG_create0_p8inf(p8);
199 if (bag != NULL)
200 p8 = NULL; /* bag takes ownership of p8 */
201 }
202 /* This does not need to be in the error path */
203 if (p8 != NULL)
204 PKCS8_PRIV_KEY_INFO_free(p8);
205
206 if (bag == NULL || !pkcs12_add_bag(pbags, bag))
207 goto err;
208
209 return bag;
210
211 err:
212 PKCS12_SAFEBAG_free(bag);
213 return NULL;
214
215 }
216
STACK_OFnull217 PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags,
218 EVP_PKEY *key, int key_usage, int iter,
219 int nid_key, const char *pass)
220 {
221 return PKCS12_add_key_ex(pbags, key, key_usage, iter, nid_key, pass,
222 NULL, NULL);
223 }
224
STACK_OFnull225 PKCS12_SAFEBAG *PKCS12_add_secret(STACK_OF(PKCS12_SAFEBAG) **pbags,
226 int nid_type, const unsigned char *value, int len)
227 {
228 PKCS12_SAFEBAG *bag = NULL;
229
230 /* Add secret, storing the value as an octet string */
231 if ((bag = PKCS12_SAFEBAG_create_secret(nid_type, V_ASN1_OCTET_STRING, value, len)) == NULL)
232 goto err;
233
234 if (!pkcs12_add_bag(pbags, bag))
235 goto err;
236
237 return bag;
238 err:
239 PKCS12_SAFEBAG_free(bag);
240 return NULL;
241 }
242
STACK_OFnull243 int PKCS12_add_safe_ex(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
244 int nid_safe, int iter, const char *pass,
245 OSSL_LIB_CTX *ctx, const char *propq)
246 {
247 PKCS7 *p7 = NULL;
248 int free_safes = 0;
249
250 if (*psafes == NULL) {
251 *psafes = sk_PKCS7_new_null();
252 if (*psafes == NULL)
253 return 0;
254 free_safes = 1;
255 }
256
257 if (nid_safe == 0)
258 #ifdef OPENSSL_NO_RC2
259 nid_safe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
260 #else
261 nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
262 #endif
263
264 if (nid_safe == -1)
265 p7 = PKCS12_pack_p7data(bags);
266 else
267 p7 = PKCS12_pack_p7encdata_ex(nid_safe, pass, -1, NULL, 0, iter, bags, ctx, propq);
268 if (p7 == NULL)
269 goto err;
270
271 if (!sk_PKCS7_push(*psafes, p7))
272 goto err;
273
274 return 1;
275
276 err:
277 if (free_safes) {
278 sk_PKCS7_free(*psafes);
279 *psafes = NULL;
280 }
281 PKCS7_free(p7);
282 return 0;
283 }
284
STACK_OFnull285 int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
286 int nid_safe, int iter, const char *pass)
287 {
288 return PKCS12_add_safe_ex(psafes, bags, nid_safe, iter, pass, NULL, NULL);
289 }
290
STACK_OFnull291 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
292 PKCS12_SAFEBAG *bag)
293 {
294 int free_bags = 0;
295
296 if (pbags == NULL)
297 return 1;
298 if (*pbags == NULL) {
299 *pbags = sk_PKCS12_SAFEBAG_new_null();
300 if (*pbags == NULL)
301 return 0;
302 free_bags = 1;
303 }
304
305 if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) {
306 if (free_bags) {
307 sk_PKCS12_SAFEBAG_free(*pbags);
308 *pbags = NULL;
309 }
310 return 0;
311 }
312
313 return 1;
314
315 }
316
STACK_OFnull317 PKCS12 *PKCS12_add_safes_ex(STACK_OF(PKCS7) *safes, int nid_p7,
318 OSSL_LIB_CTX *ctx, const char *propq)
319 {
320 PKCS12 *p12;
321
322 if (nid_p7 <= 0)
323 nid_p7 = NID_pkcs7_data;
324 p12 = PKCS12_init_ex(nid_p7, ctx, propq);
325 if (p12 == NULL)
326 return NULL;
327
328 if (!PKCS12_pack_authsafes(p12, safes)) {
329 PKCS12_free(p12);
330 return NULL;
331 }
332
333 return p12;
334
335 }
336
STACK_OFnull337 PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
338 {
339 return PKCS12_add_safes_ex(safes, nid_p7, NULL, NULL);
340 }
341