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 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 * 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 * 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 * 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 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 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 * 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