1 /* 2 * Copyright 1999-2024 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 static PKCS12_SAFEBAG *pkcs12_add_cert_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, 18 X509 *cert, 19 const char *name, 20 int namelen, 21 unsigned char *keyid, 22 int keyidlen); 23 24 static int copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid) 25 { 26 int idx; 27 X509_ATTRIBUTE *attr; 28 idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1); 29 if (idx < 0) 30 return 1; 31 attr = EVP_PKEY_get_attr(pkey, idx); 32 if (!X509at_add1_attr(&bag->attrib, attr)) 33 return 0; 34 return 1; 35 } 36 37 PKCS12 *PKCS12_create_ex(const char *pass, const char *name, EVP_PKEY *pkey, 38 X509 *cert, STACK_OF(X509) *ca, int nid_key, int nid_cert, 39 int iter, int mac_iter, int keytype, 40 OSSL_LIB_CTX *ctx, const char *propq) 41 { 42 PKCS12 *p12 = NULL; 43 STACK_OF(PKCS7) *safes = NULL; 44 STACK_OF(PKCS12_SAFEBAG) *bags = NULL; 45 PKCS12_SAFEBAG *bag = NULL; 46 int i; 47 unsigned char keyid[EVP_MAX_MD_SIZE]; 48 unsigned int keyidlen = 0; 49 int namelen = -1; 50 unsigned char *pkeyid = NULL; 51 int pkeyidlen = -1; 52 53 /* Set defaults */ 54 if (nid_cert == NID_undef) 55 nid_cert = NID_aes_256_cbc; 56 if (nid_key == NID_undef) 57 nid_key = NID_aes_256_cbc; 58 if (!iter) 59 iter = PKCS12_DEFAULT_ITER; 60 if (!mac_iter) 61 mac_iter = PKCS12_DEFAULT_ITER; 62 63 if (pkey == NULL && cert == NULL && ca == NULL) { 64 ERR_raise(ERR_LIB_PKCS12, PKCS12_R_INVALID_NULL_ARGUMENT); 65 return NULL; 66 } 67 68 if (pkey && cert) { 69 if (!X509_check_private_key(cert, pkey)) 70 return NULL; 71 if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen)) 72 return NULL; 73 } 74 75 if (cert) { 76 if (name == NULL) 77 name = (char *)X509_alias_get0(cert, &namelen); 78 if (keyidlen > 0) { 79 pkeyid = keyid; 80 pkeyidlen = keyidlen; 81 } else { 82 pkeyid = X509_keyid_get0(cert, &pkeyidlen); 83 } 84 85 bag = pkcs12_add_cert_bag(&bags, cert, name, namelen, pkeyid, pkeyidlen); 86 } 87 88 /* Add all other certificates */ 89 for (i = 0; i < sk_X509_num(ca); i++) { 90 if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i))) 91 goto err; 92 } 93 94 if (bags && !PKCS12_add_safe_ex(&safes, bags, nid_cert, iter, pass, 95 ctx, propq)) 96 goto err; 97 98 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 99 bags = NULL; 100 101 if (pkey) { 102 bag = PKCS12_add_key_ex(&bags, pkey, keytype, iter, nid_key, pass, 103 ctx, propq); 104 105 if (!bag) 106 goto err; 107 108 if (!copy_bag_attr(bag, pkey, NID_ms_csp_name)) 109 goto err; 110 if (!copy_bag_attr(bag, pkey, NID_LocalKeySet)) 111 goto err; 112 113 if (name && !PKCS12_add_friendlyname(bag, name, -1)) 114 goto err; 115 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen)) 116 goto err; 117 } 118 119 if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL)) 120 goto err; 121 122 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 123 bags = NULL; 124 125 p12 = PKCS12_add_safes_ex(safes, 0, ctx, propq); 126 127 if (p12 == NULL) 128 goto err; 129 130 sk_PKCS7_pop_free(safes, PKCS7_free); 131 132 safes = NULL; 133 134 if ((mac_iter != -1) && 135 !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL)) 136 goto err; 137 138 return p12; 139 140 err: 141 PKCS12_free(p12); 142 sk_PKCS7_pop_free(safes, PKCS7_free); 143 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 144 return NULL; 145 146 } 147 148 PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *cert, 149 STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter, 150 int mac_iter, int keytype) 151 { 152 return PKCS12_create_ex(pass, name, pkey, cert, ca, nid_key, nid_cert, 153 iter, mac_iter, keytype, NULL, NULL); 154 } 155 156 static PKCS12_SAFEBAG *pkcs12_add_cert_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, 157 X509 *cert, 158 const char *name, 159 int namelen, 160 unsigned char *keyid, 161 int keyidlen) 162 { 163 PKCS12_SAFEBAG *bag = NULL; 164 165 /* Add user certificate */ 166 if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL) 167 goto err; 168 169 if (name != NULL && !PKCS12_add_friendlyname(bag, name, namelen)) 170 goto err; 171 172 if (keyid != NULL && !PKCS12_add_localkeyid(bag, keyid, keyidlen)) 173 goto err; 174 175 if (!pkcs12_add_bag(pbags, bag)) 176 goto err; 177 178 return bag; 179 180 err: 181 PKCS12_SAFEBAG_free(bag); 182 return NULL; 183 } 184 185 PKCS12_SAFEBAG *PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert) 186 { 187 char *name = NULL; 188 int namelen = -1; 189 unsigned char *keyid = NULL; 190 int keyidlen = -1; 191 192 /* 193 * Use friendlyName and localKeyID in certificate. (if present) 194 */ 195 name = (char *)X509_alias_get0(cert, &namelen); 196 keyid = X509_keyid_get0(cert, &keyidlen); 197 198 return pkcs12_add_cert_bag(pbags, cert, name, namelen, keyid, keyidlen); 199 } 200 201 PKCS12_SAFEBAG *PKCS12_add_key_ex(STACK_OF(PKCS12_SAFEBAG) **pbags, 202 EVP_PKEY *key, int key_usage, int iter, 203 int nid_key, const char *pass, 204 OSSL_LIB_CTX *ctx, const char *propq) 205 { 206 207 PKCS12_SAFEBAG *bag = NULL; 208 PKCS8_PRIV_KEY_INFO *p8 = NULL; 209 210 /* Make a PKCS#8 structure */ 211 if ((p8 = EVP_PKEY2PKCS8(key)) == NULL) 212 goto err; 213 if (key_usage && !PKCS8_add_keyusage(p8, key_usage)) 214 goto err; 215 if (nid_key != -1) { 216 /* This call does not take ownership of p8 */ 217 bag = PKCS12_SAFEBAG_create_pkcs8_encrypt_ex(nid_key, pass, -1, NULL, 0, 218 iter, p8, ctx, propq); 219 } else { 220 bag = PKCS12_SAFEBAG_create0_p8inf(p8); 221 if (bag != NULL) 222 p8 = NULL; /* bag takes ownership of p8 */ 223 } 224 /* This does not need to be in the error path */ 225 if (p8 != NULL) 226 PKCS8_PRIV_KEY_INFO_free(p8); 227 228 if (bag == NULL || !pkcs12_add_bag(pbags, bag)) 229 goto err; 230 231 return bag; 232 233 err: 234 PKCS12_SAFEBAG_free(bag); 235 return NULL; 236 237 } 238 239 PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags, 240 EVP_PKEY *key, int key_usage, int iter, 241 int nid_key, const char *pass) 242 { 243 return PKCS12_add_key_ex(pbags, key, key_usage, iter, nid_key, pass, 244 NULL, NULL); 245 } 246 247 PKCS12_SAFEBAG *PKCS12_add_secret(STACK_OF(PKCS12_SAFEBAG) **pbags, 248 int nid_type, const unsigned char *value, int len) 249 { 250 PKCS12_SAFEBAG *bag = NULL; 251 252 /* Add secret, storing the value as an octet string */ 253 if ((bag = PKCS12_SAFEBAG_create_secret(nid_type, V_ASN1_OCTET_STRING, value, len)) == NULL) 254 goto err; 255 256 if (!pkcs12_add_bag(pbags, bag)) 257 goto err; 258 259 return bag; 260 err: 261 PKCS12_SAFEBAG_free(bag); 262 return NULL; 263 } 264 265 int PKCS12_add_safe_ex(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags, 266 int nid_safe, int iter, const char *pass, 267 OSSL_LIB_CTX *ctx, const char *propq) 268 { 269 PKCS7 *p7 = NULL; 270 int free_safes = 0; 271 272 if (*psafes == NULL) { 273 *psafes = sk_PKCS7_new_null(); 274 if (*psafes == NULL) 275 return 0; 276 free_safes = 1; 277 } 278 279 if (nid_safe == 0) 280 #ifdef OPENSSL_NO_RC2 281 nid_safe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC; 282 #else 283 nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC; 284 #endif 285 286 if (nid_safe == -1) 287 p7 = PKCS12_pack_p7data(bags); 288 else 289 p7 = PKCS12_pack_p7encdata_ex(nid_safe, pass, -1, NULL, 0, iter, bags, ctx, propq); 290 if (p7 == NULL) 291 goto err; 292 293 if (!sk_PKCS7_push(*psafes, p7)) 294 goto err; 295 296 return 1; 297 298 err: 299 if (free_safes) { 300 sk_PKCS7_free(*psafes); 301 *psafes = NULL; 302 } 303 PKCS7_free(p7); 304 return 0; 305 } 306 307 int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags, 308 int nid_safe, int iter, const char *pass) 309 { 310 return PKCS12_add_safe_ex(psafes, bags, nid_safe, iter, pass, NULL, NULL); 311 } 312 313 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, 314 PKCS12_SAFEBAG *bag) 315 { 316 int free_bags = 0; 317 318 if (pbags == NULL) 319 return 1; 320 if (*pbags == NULL) { 321 *pbags = sk_PKCS12_SAFEBAG_new_null(); 322 if (*pbags == NULL) 323 return 0; 324 free_bags = 1; 325 } 326 327 if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) { 328 if (free_bags) { 329 sk_PKCS12_SAFEBAG_free(*pbags); 330 *pbags = NULL; 331 } 332 return 0; 333 } 334 335 return 1; 336 337 } 338 339 PKCS12 *PKCS12_add_safes_ex(STACK_OF(PKCS7) *safes, int nid_p7, 340 OSSL_LIB_CTX *ctx, const char *propq) 341 { 342 PKCS12 *p12; 343 344 if (nid_p7 <= 0) 345 nid_p7 = NID_pkcs7_data; 346 p12 = PKCS12_init_ex(nid_p7, ctx, propq); 347 if (p12 == NULL) 348 return NULL; 349 350 if (!PKCS12_pack_authsafes(p12, safes)) { 351 PKCS12_free(p12); 352 return NULL; 353 } 354 355 return p12; 356 357 } 358 359 PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7) 360 { 361 return PKCS12_add_safes_ex(safes, nid_p7, NULL, NULL); 362 } 363