1 /* 2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the OpenSSL license (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_lcl.h" 14 15 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, 16 PKCS12_SAFEBAG *bag); 17 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 31 PKCS12 *PKCS12_create(const char *pass, const char *name, EVP_PKEY *pkey, X509 *cert, 32 STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter, 33 int mac_iter, int keytype) 34 { 35 PKCS12 *p12 = NULL; 36 STACK_OF(PKCS7) *safes = NULL; 37 STACK_OF(PKCS12_SAFEBAG) *bags = NULL; 38 PKCS12_SAFEBAG *bag = NULL; 39 int i; 40 unsigned char keyid[EVP_MAX_MD_SIZE]; 41 unsigned int keyidlen = 0; 42 43 /* Set defaults */ 44 if (!nid_cert) 45 #ifdef OPENSSL_NO_RC2 46 nid_cert = NID_pbe_WithSHA1And3_Key_TripleDES_CBC; 47 #else 48 nid_cert = NID_pbe_WithSHA1And40BitRC2_CBC; 49 #endif 50 if (!nid_key) 51 nid_key = NID_pbe_WithSHA1And3_Key_TripleDES_CBC; 52 if (!iter) 53 iter = PKCS12_DEFAULT_ITER; 54 if (!mac_iter) 55 mac_iter = 1; 56 57 if (!pkey && !cert && !ca) { 58 PKCS12err(PKCS12_F_PKCS12_CREATE, PKCS12_R_INVALID_NULL_ARGUMENT); 59 return NULL; 60 } 61 62 if (pkey && cert) { 63 if (!X509_check_private_key(cert, pkey)) 64 return NULL; 65 X509_digest(cert, EVP_sha1(), keyid, &keyidlen); 66 } 67 68 if (cert) { 69 bag = PKCS12_add_cert(&bags, cert); 70 if (name && !PKCS12_add_friendlyname(bag, name, -1)) 71 goto err; 72 if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen)) 73 goto err; 74 } 75 76 /* Add all other certificates */ 77 for (i = 0; i < sk_X509_num(ca); i++) { 78 if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i))) 79 goto err; 80 } 81 82 if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass)) 83 goto err; 84 85 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); 86 bags = NULL; 87 88 if (pkey) { 89 bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass); 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(safes, 0); 112 113 if (!p12) 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 } 133 134 PKCS12_SAFEBAG *PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert) 135 { 136 PKCS12_SAFEBAG *bag = NULL; 137 char *name; 138 int namelen = -1; 139 unsigned char *keyid; 140 int keyidlen = -1; 141 142 /* Add user certificate */ 143 if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL) 144 goto err; 145 146 /* 147 * Use friendlyName and localKeyID in certificate. (if present) 148 */ 149 150 name = (char *)X509_alias_get0(cert, &namelen); 151 152 if (name && !PKCS12_add_friendlyname(bag, name, namelen)) 153 goto err; 154 155 keyid = X509_keyid_get0(cert, &keyidlen); 156 157 if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen)) 158 goto err; 159 160 if (!pkcs12_add_bag(pbags, bag)) 161 goto err; 162 163 return bag; 164 165 err: 166 PKCS12_SAFEBAG_free(bag); 167 return NULL; 168 169 } 170 171 PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags, 172 EVP_PKEY *key, int key_usage, int iter, 173 int nid_key, const char *pass) 174 { 175 176 PKCS12_SAFEBAG *bag = NULL; 177 PKCS8_PRIV_KEY_INFO *p8 = NULL; 178 179 /* Make a PKCS#8 structure */ 180 if ((p8 = EVP_PKEY2PKCS8(key)) == NULL) 181 goto err; 182 if (key_usage && !PKCS8_add_keyusage(p8, key_usage)) 183 goto err; 184 if (nid_key != -1) { 185 bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1, NULL, 0, 186 iter, p8); 187 PKCS8_PRIV_KEY_INFO_free(p8); 188 } else 189 bag = PKCS12_SAFEBAG_create0_p8inf(p8); 190 191 if (!bag) 192 goto err; 193 194 if (!pkcs12_add_bag(pbags, bag)) 195 goto err; 196 197 return bag; 198 199 err: 200 PKCS12_SAFEBAG_free(bag); 201 return NULL; 202 203 } 204 205 int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags, 206 int nid_safe, int iter, const char *pass) 207 { 208 PKCS7 *p7 = NULL; 209 int free_safes = 0; 210 211 if (!*psafes) { 212 *psafes = sk_PKCS7_new_null(); 213 if (!*psafes) 214 return 0; 215 free_safes = 1; 216 } else 217 free_safes = 0; 218 219 if (nid_safe == 0) 220 #ifdef OPENSSL_NO_RC2 221 nid_safe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC; 222 #else 223 nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC; 224 #endif 225 226 if (nid_safe == -1) 227 p7 = PKCS12_pack_p7data(bags); 228 else 229 p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0, iter, bags); 230 if (!p7) 231 goto err; 232 233 if (!sk_PKCS7_push(*psafes, p7)) 234 goto err; 235 236 return 1; 237 238 err: 239 if (free_safes) { 240 sk_PKCS7_free(*psafes); 241 *psafes = NULL; 242 } 243 PKCS7_free(p7); 244 return 0; 245 246 } 247 248 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, 249 PKCS12_SAFEBAG *bag) 250 { 251 int free_bags; 252 if (!pbags) 253 return 1; 254 if (!*pbags) { 255 *pbags = sk_PKCS12_SAFEBAG_new_null(); 256 if (!*pbags) 257 return 0; 258 free_bags = 1; 259 } else 260 free_bags = 0; 261 262 if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) { 263 if (free_bags) { 264 sk_PKCS12_SAFEBAG_free(*pbags); 265 *pbags = NULL; 266 } 267 return 0; 268 } 269 270 return 1; 271 272 } 273 274 PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7) 275 { 276 PKCS12 *p12; 277 if (nid_p7 <= 0) 278 nid_p7 = NID_pkcs7_data; 279 p12 = PKCS12_init(nid_p7); 280 281 if (!p12) 282 return NULL; 283 284 if (!PKCS12_pack_authsafes(p12, safes)) { 285 PKCS12_free(p12); 286 return NULL; 287 } 288 289 return p12; 290 291 } 292