crypto/pkcs12/p12_crt.c

   1 /*
   2  * Copyright 1999-2020 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_local.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         if (!X509_digest(cert, EVP_sha1(), keyid, &keyidlen))
  66             return NULL;
  67     }
  68
  69     if (cert) {
  70         bag = PKCS12_add_cert(&bags, cert);
  71         if (name && !PKCS12_add_friendlyname(bag, name, -1))
  72             goto err;
  73         if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
  74             goto err;
  75     }
  76
  77     /* Add all other certificates */
  78     for (i = 0; i < sk_X509_num(ca); i++) {
  79         if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
  80             goto err;
  81     }
  82
  83     if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
  84         goto err;
  85
  86     sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
  87     bags = NULL;
  88
  89     if (pkey) {
  90         bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);
  91
  92         if (!bag)
  93             goto err;
  94
  95         if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
  96             goto err;
  97         if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
  98             goto err;
  99
 100         if (name && !PKCS12_add_friendlyname(bag, name, -1))
 101             goto err;
 102         if (keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
 103             goto err;
 104     }
 105
 106     if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
 107         goto err;
 108
 109     sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
 110     bags = NULL;
 111
 112     p12 = PKCS12_add_safes(safes, 0);
 113
 114     if (!p12)
 115         goto err;
 116
 117     sk_PKCS7_pop_free(safes, PKCS7_free);
 118
 119     safes = NULL;
 120
 121     if ((mac_iter != -1) &&
 122         !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
 123         goto err;
 124
 125     return p12;
 126
 127  err:
 128     PKCS12_free(p12);
 129     sk_PKCS7_pop_free(safes, PKCS7_free);
 130     sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
 131     return NULL;
 132
 133 }
 134
 135 PKCS12_SAFEBAG *PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
 136 {
 137     PKCS12_SAFEBAG *bag = NULL;
 138     char *name;
 139     int namelen = -1;
 140     unsigned char *keyid;
 141     int keyidlen = -1;
 142
 143     /* Add user certificate */
 144     if ((bag = PKCS12_SAFEBAG_create_cert(cert)) == NULL)
 145         goto err;
 146
 147     /*
 148      * Use friendlyName and localKeyID in certificate. (if present)
 149      */
 150
 151     name = (char *)X509_alias_get0(cert, &namelen);
 152
 153     if (name && !PKCS12_add_friendlyname(bag, name, namelen))
 154         goto err;
 155
 156     keyid = X509_keyid_get0(cert, &keyidlen);
 157
 158     if (keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
 159         goto err;
 160
 161     if (!pkcs12_add_bag(pbags, bag))
 162         goto err;
 163
 164     return bag;
 165
 166  err:
 167     PKCS12_SAFEBAG_free(bag);
 168     return NULL;
 169
 170 }
 171
 172 PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags,
 173                                EVP_PKEY *key, int key_usage, int iter,
 174                                int nid_key, const char *pass)
 175 {
 176
 177     PKCS12_SAFEBAG *bag = NULL;
 178     PKCS8_PRIV_KEY_INFO *p8 = NULL;
 179
 180     /* Make a PKCS#8 structure */
 181     if ((p8 = EVP_PKEY2PKCS8(key)) == NULL)
 182         goto err;
 183     if (key_usage && !PKCS8_add_keyusage(p8, key_usage))
 184         goto err;
 185     if (nid_key != -1) {
 186         bag = PKCS12_SAFEBAG_create_pkcs8_encrypt(nid_key, pass, -1, NULL, 0,
 187                                                   iter, p8);
 188         PKCS8_PRIV_KEY_INFO_free(p8);
 189     } else
 190         bag = PKCS12_SAFEBAG_create0_p8inf(p8);
 191
 192     if (!bag)
 193         goto err;
 194
 195     if (!pkcs12_add_bag(pbags, bag))
 196         goto err;
 197
 198     return bag;
 199
 200  err:
 201     PKCS12_SAFEBAG_free(bag);
 202     return NULL;
 203
 204 }
 205
 206 int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
 207                     int nid_safe, int iter, const char *pass)
 208 {
 209     PKCS7 *p7 = NULL;
 210     int free_safes = 0;
 211
 212     if (!*psafes) {
 213         *psafes = sk_PKCS7_new_null();
 214         if (!*psafes)
 215             return 0;
 216         free_safes = 1;
 217     } else
 218         free_safes = 0;
 219
 220     if (nid_safe == 0)
 221 #ifdef OPENSSL_NO_RC2
 222         nid_safe = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
 223 #else
 224         nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;
 225 #endif
 226
 227     if (nid_safe == -1)
 228         p7 = PKCS12_pack_p7data(bags);
 229     else
 230         p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0, iter, bags);
 231     if (!p7)
 232         goto err;
 233
 234     if (!sk_PKCS7_push(*psafes, p7))
 235         goto err;
 236
 237     return 1;
 238
 239  err:
 240     if (free_safes) {
 241         sk_PKCS7_free(*psafes);
 242         *psafes = NULL;
 243     }
 244     PKCS7_free(p7);
 245     return 0;
 246
 247 }
 248
 249 static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags,
 250                           PKCS12_SAFEBAG *bag)
 251 {
 252     int free_bags;
 253     if (!pbags)
 254         return 1;
 255     if (!*pbags) {
 256         *pbags = sk_PKCS12_SAFEBAG_new_null();
 257         if (!*pbags)
 258             return 0;
 259         free_bags = 1;
 260     } else
 261         free_bags = 0;
 262
 263     if (!sk_PKCS12_SAFEBAG_push(*pbags, bag)) {
 264         if (free_bags) {
 265             sk_PKCS12_SAFEBAG_free(*pbags);
 266             *pbags = NULL;
 267         }
 268         return 0;
 269     }
 270
 271     return 1;
 272
 273 }
 274
 275 PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
 276 {
 277     PKCS12 *p12;
 278     if (nid_p7 <= 0)
 279         nid_p7 = NID_pkcs7_data;
 280     p12 = PKCS12_init(nid_p7);
 281
 282     if (!p12)
 283         return NULL;
 284
 285     if (!PKCS12_pack_authsafes(p12, safes)) {
 286         PKCS12_free(p12);
 287         return NULL;
 288     }
 289
 290     return p12;
 291
 292 }