/* p12_npas.c */ /* * Written by Dr Stephen N Henson (steve@openssl.org) 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); if (!alg_get(p7->d.encrypted->enc_data->algorithm, &pbe_nid, &pbe_iter, &pbe_saltlen)) { sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free); bags = NULL; } } 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; if (!alg_get(bag->value.shkeybag->algor, &p8_nid, &p8_iter, &p8_saltlen)) return 0; 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); if (!pbe) return 0; *pnid = OBJ_obj2nid(alg->algorithm); *piter = ASN1_INTEGER_get(pbe->iter); *psaltlen = pbe->salt->length; PBEPARAM_free(pbe); return 1; }