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p12_crt.c

/* p12_crt.c */
/* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
 * project.
 */
/* ====================================================================
 * Copyright (c) 1999-2002 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    licensing@OpenSSL.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */

#include <stdio.h>
#include "cryptlib.h"
#include <openssl/pkcs12.h>
#ifdef OPENSSL_FIPS
#include <openssl/fips.h>
#endif



static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, PKCS12_SAFEBAG *bag);

static int copy_bag_attr(PKCS12_SAFEBAG *bag, EVP_PKEY *pkey, int nid)
      {
      int idx;
      X509_ATTRIBUTE *attr;
      idx = EVP_PKEY_get_attr_by_NID(pkey, nid, -1);
      if (idx < 0)
            return 1;
      attr = EVP_PKEY_get_attr(pkey, idx);
      if (!X509at_add1_attr(&bag->attrib, attr))
            return 0;
      return 1;
      }

PKCS12 *PKCS12_create(char *pass, char *name, EVP_PKEY *pkey, X509 *cert,
           STACK_OF(X509) *ca, int nid_key, int nid_cert, int iter, int mac_iter,
           int keytype)
{
      PKCS12 *p12 = NULL;
      STACK_OF(PKCS7) *safes = NULL;
      STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
      PKCS12_SAFEBAG *bag = NULL;
      int i;
      unsigned char keyid[EVP_MAX_MD_SIZE];
      unsigned int keyidlen = 0;

      /* Set defaults */
      if (!nid_cert)
            {
#ifdef OPENSSL_FIPS
            if (FIPS_mode())
                  nid_cert = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
            else
#endif
            nid_cert = NID_pbe_WithSHA1And40BitRC2_CBC;
            }
      if (!nid_key)
            nid_key = NID_pbe_WithSHA1And3_Key_TripleDES_CBC;
      if (!iter)
            iter = PKCS12_DEFAULT_ITER;
      if (!mac_iter)
            mac_iter = 1;

      if(!pkey && !cert && !ca)
            {
            PKCS12err(PKCS12_F_PKCS12_CREATE,PKCS12_R_INVALID_NULL_ARGUMENT);
            return NULL;
            }

      if (pkey && cert)
            {
            if(!X509_check_private_key(cert, pkey))
                  return NULL;
            X509_digest(cert, EVP_sha1(), keyid, &keyidlen);
            }

      if (cert)
            {
            bag = PKCS12_add_cert(&bags, cert);
            if(name && !PKCS12_add_friendlyname(bag, name, -1))
                  goto err;
            if(keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
                  goto err;
            }

      /* Add all other certificates */
      for(i = 0; i < sk_X509_num(ca); i++)
            {
            if (!PKCS12_add_cert(&bags, sk_X509_value(ca, i)))
                  goto err;
            }

      if (bags && !PKCS12_add_safe(&safes, bags, nid_cert, iter, pass))
                  goto err;

      sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      bags = NULL;

      if (pkey)
            {
            bag = PKCS12_add_key(&bags, pkey, keytype, iter, nid_key, pass);

            if (!bag)
                  goto err;

            if (!copy_bag_attr(bag, pkey, NID_ms_csp_name))
                  goto err;
            if (!copy_bag_attr(bag, pkey, NID_LocalKeySet))
                  goto err;

            if(name && !PKCS12_add_friendlyname(bag, name, -1))
                  goto err;
            if(keyidlen && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
                  goto err;
            }

      if (bags && !PKCS12_add_safe(&safes, bags, -1, 0, NULL))
                  goto err;

      sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      bags = NULL;

      p12 = PKCS12_add_safes(safes, 0);

      if (!p12)
            goto err;

      sk_PKCS7_pop_free(safes, PKCS7_free);

      safes = NULL;

      if ((mac_iter != -1) &&
            !PKCS12_set_mac(p12, pass, -1, NULL, 0, mac_iter, NULL))
          goto err;

      return p12;

      err:

      if (p12)
            PKCS12_free(p12);
      if (safes)
            sk_PKCS7_pop_free(safes, PKCS7_free);
      if (bags)
            sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
      return NULL;

}

PKCS12_SAFEBAG *PKCS12_add_cert(STACK_OF(PKCS12_SAFEBAG) **pbags, X509 *cert)
      {
      PKCS12_SAFEBAG *bag = NULL;
      char *name;
      int namelen = -1;
      unsigned char *keyid;
      int keyidlen = -1;

      /* Add user certificate */
      if(!(bag = PKCS12_x5092certbag(cert)))
            goto err;

      /* Use friendlyName and localKeyID in certificate.
       * (if present)
       */

      name = (char *)X509_alias_get0(cert, &namelen);

      if(name && !PKCS12_add_friendlyname(bag, name, namelen))
            goto err;

      keyid = X509_keyid_get0(cert, &keyidlen);

      if(keyid && !PKCS12_add_localkeyid(bag, keyid, keyidlen))
            goto err;

      if (!pkcs12_add_bag(pbags, bag))
            goto err;

      return bag;

      err:

      if (bag)
            PKCS12_SAFEBAG_free(bag);

      return NULL;

      }

PKCS12_SAFEBAG *PKCS12_add_key(STACK_OF(PKCS12_SAFEBAG) **pbags, EVP_PKEY *key,
                                    int key_usage, int iter,
                                    int nid_key, char *pass)
      {

      PKCS12_SAFEBAG *bag = NULL;
      PKCS8_PRIV_KEY_INFO *p8 = NULL;

      /* Make a PKCS#8 structure */
      if(!(p8 = EVP_PKEY2PKCS8(key)))
            goto err;
      if(key_usage && !PKCS8_add_keyusage(p8, key_usage))
            goto err;
      if (nid_key != -1)
            {
            bag = PKCS12_MAKE_SHKEYBAG(nid_key, pass, -1, NULL, 0, iter, p8);
            PKCS8_PRIV_KEY_INFO_free(p8);
            }
      else
            bag = PKCS12_MAKE_KEYBAG(p8);

      if(!bag)
            goto err;

      if (!pkcs12_add_bag(pbags, bag))
            goto err;

      return bag;

      err:

      if (bag)
            PKCS12_SAFEBAG_free(bag);

      return NULL;

      }

int PKCS12_add_safe(STACK_OF(PKCS7) **psafes, STACK_OF(PKCS12_SAFEBAG) *bags,
                                    int nid_safe, int iter, char *pass)
      {
      PKCS7 *p7 = NULL;
      int free_safes = 0;

      if (!*psafes)
            {
            *psafes = sk_PKCS7_new_null();
            if (!*psafes)
                  return 0;
            free_safes = 1;
            }
      else
            free_safes = 0;

      if (nid_safe == 0)
            nid_safe = NID_pbe_WithSHA1And40BitRC2_CBC;

      if (nid_safe == -1)
            p7 = PKCS12_pack_p7data(bags);
      else
            p7 = PKCS12_pack_p7encdata(nid_safe, pass, -1, NULL, 0,
                                iter, bags);
      if (!p7)
            goto err;

      if (!sk_PKCS7_push(*psafes, p7))
            goto err;

      return 1;

      err:
      if (free_safes)
            {
            sk_PKCS7_free(*psafes);
            *psafes = NULL;
            }

      if (p7)
            PKCS7_free(p7);

      return 0;

      }

static int pkcs12_add_bag(STACK_OF(PKCS12_SAFEBAG) **pbags, PKCS12_SAFEBAG *bag)
      {
      int free_bags;
      if (!pbags)
            return 1;
      if (!*pbags)
            {
            *pbags = sk_PKCS12_SAFEBAG_new_null();
            if (!*pbags)
                  return 0;
            free_bags = 1;
            }
      else 
            free_bags = 0;

      if (!sk_PKCS12_SAFEBAG_push(*pbags, bag))
            {
            if (free_bags)
                  {
                  sk_PKCS12_SAFEBAG_free(*pbags);
                  *pbags = NULL;
                  }
            return 0;
            }

      return 1;

      }
            

PKCS12 *PKCS12_add_safes(STACK_OF(PKCS7) *safes, int nid_p7)
      {
      PKCS12 *p12;
      if (nid_p7 <= 0)
            nid_p7 = NID_pkcs7_data;
      p12 = PKCS12_init(nid_p7);

      if (!p12)
            return NULL;

      if(!PKCS12_pack_authsafes(p12, safes))
            {
            PKCS12_free(p12);
            return NULL;
            }

      return p12;

      }

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