/* 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);			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;}