p12_npas.c
上传用户:yisoukefu
上传日期:2020-08-09
资源大小:39506k
文件大小:7k
- /* p12_npas.c */
- /* Written by Dr Stephen N Henson (shenson@bigfoot.com) for the OpenSSL
- * project 1999.
- */
- /* ====================================================================
- * Copyright (c) 1999 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 <stdlib.h>
- #include <string.h>
- #include <openssl/pem.h>
- #include <openssl/err.h>
- #include <openssl/pkcs12.h>
- /* PKCS#12 password change routine */
- static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass);
- static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass,
- char *newpass);
- static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass);
- static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen);
- /*
- * Change the password on a PKCS#12 structure.
- */
- int PKCS12_newpass(PKCS12 *p12, char *oldpass, char *newpass)
- {
- /* Check for NULL PKCS12 structure */
- if(!p12) {
- PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_INVALID_NULL_PKCS12_POINTER);
- return 0;
- }
- /* Check the mac */
-
- if (!PKCS12_verify_mac(p12, oldpass, -1)) {
- PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_MAC_VERIFY_FAILURE);
- return 0;
- }
- if (!newpass_p12(p12, oldpass, newpass)) {
- PKCS12err(PKCS12_F_PKCS12_NEWPASS,PKCS12_R_PARSE_ERROR);
- return 0;
- }
- return 1;
- }
- /* Parse the outer PKCS#12 structure */
- static int newpass_p12(PKCS12 *p12, char *oldpass, char *newpass)
- {
- STACK_OF(PKCS7) *asafes, *newsafes;
- STACK_OF(PKCS12_SAFEBAG) *bags;
- int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0;
- PKCS7 *p7, *p7new;
- ASN1_OCTET_STRING *p12_data_tmp = NULL, *macnew = NULL;
- unsigned char mac[EVP_MAX_MD_SIZE];
- unsigned int maclen;
- if (!(asafes = PKCS12_unpack_authsafes(p12))) return 0;
- if(!(newsafes = sk_PKCS7_new_null())) return 0;
- for (i = 0; i < sk_PKCS7_num (asafes); i++) {
- p7 = sk_PKCS7_value(asafes, i);
- bagnid = OBJ_obj2nid(p7->type);
- if (bagnid == NID_pkcs7_data) {
- bags = PKCS12_unpack_p7data(p7);
- } else if (bagnid == NID_pkcs7_encrypted) {
- bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
- alg_get(p7->d.encrypted->enc_data->algorithm,
- &pbe_nid, &pbe_iter, &pbe_saltlen);
- } else continue;
- if (!bags) {
- sk_PKCS7_pop_free(asafes, PKCS7_free);
- return 0;
- }
- if (!newpass_bags(bags, oldpass, newpass)) {
- sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
- sk_PKCS7_pop_free(asafes, PKCS7_free);
- return 0;
- }
- /* Repack bag in same form with new password */
- if (bagnid == NID_pkcs7_data) p7new = PKCS12_pack_p7data(bags);
- else p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL,
- pbe_saltlen, pbe_iter, bags);
- sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
- if(!p7new) {
- sk_PKCS7_pop_free(asafes, PKCS7_free);
- return 0;
- }
- sk_PKCS7_push(newsafes, p7new);
- }
- sk_PKCS7_pop_free(asafes, PKCS7_free);
- /* Repack safe: save old safe in case of error */
- p12_data_tmp = p12->authsafes->d.data;
- if(!(p12->authsafes->d.data = ASN1_OCTET_STRING_new())) goto saferr;
- if(!PKCS12_pack_authsafes(p12, newsafes)) goto saferr;
- if(!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen)) goto saferr;
- if(!(macnew = ASN1_OCTET_STRING_new())) goto saferr;
- if(!ASN1_OCTET_STRING_set(macnew, mac, maclen)) goto saferr;
- ASN1_OCTET_STRING_free(p12->mac->dinfo->digest);
- p12->mac->dinfo->digest = macnew;
- ASN1_OCTET_STRING_free(p12_data_tmp);
- return 1;
- saferr:
- /* Restore old safe */
- ASN1_OCTET_STRING_free(p12->authsafes->d.data);
- ASN1_OCTET_STRING_free(macnew);
- p12->authsafes->d.data = p12_data_tmp;
- return 0;
- }
- static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, char *oldpass,
- char *newpass)
- {
- int i;
- for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
- if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i),
- oldpass, newpass))
- return 0;
- }
- return 1;
- }
- /* Change password of safebag: only needs handle shrouded keybags */
- static int newpass_bag(PKCS12_SAFEBAG *bag, char *oldpass, char *newpass)
- {
- PKCS8_PRIV_KEY_INFO *p8;
- X509_SIG *p8new;
- int p8_nid, p8_saltlen, p8_iter;
- if(M_PKCS12_bag_type(bag) != NID_pkcs8ShroudedKeyBag) return 1;
- if (!(p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1))) return 0;
- alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter, &p8_saltlen);
- if(!(p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen,
- p8_iter, p8))) return 0;
- X509_SIG_free(bag->value.shkeybag);
- bag->value.shkeybag = p8new;
- return 1;
- }
- static int alg_get(X509_ALGOR *alg, int *pnid, int *piter, int *psaltlen)
- {
- PBEPARAM *pbe;
- const unsigned char *p;
- p = alg->parameter->value.sequence->data;
- pbe = d2i_PBEPARAM(NULL, &p, alg->parameter->value.sequence->length);
- *pnid = OBJ_obj2nid(alg->algorithm);
- *piter = ASN1_INTEGER_get(pbe->iter);
- *psaltlen = pbe->salt->length;
- PBEPARAM_free(pbe);
- return 0;
- }