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9311d0c471
This includes error reporting for libcrypto sub-libraries in surprising places. This was done using util/err-to-raise Reviewed-by: Paul Dale <paul.dale@oracle.com> (Merged from https://github.com/openssl/openssl/pull/13318)
187 lines
5.6 KiB
C
187 lines
5.6 KiB
C
/*
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* Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
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*
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* Licensed under the Apache License 2.0 (the "License"). You may not use
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* this file except in compliance with the License. You can obtain a copy
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* in the file LICENSE in the source distribution or at
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* https://www.openssl.org/source/license.html
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*/
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <openssl/pem.h>
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#include <openssl/err.h>
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#include <openssl/pkcs12.h>
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#include "p12_local.h"
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/* PKCS#12 password change routine */
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static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass);
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static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass,
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const char *newpass);
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static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass,
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const char *newpass);
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static int alg_get(const X509_ALGOR *alg, int *pnid, int *piter,
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int *psaltlen);
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/*
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* Change the password on a PKCS#12 structure.
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*/
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int PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass)
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{
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/* Check for NULL PKCS12 structure */
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if (p12 == NULL) {
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ERR_raise(ERR_LIB_PKCS12, PKCS12_R_INVALID_NULL_PKCS12_POINTER);
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return 0;
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}
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/* Check the mac */
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if (!PKCS12_verify_mac(p12, oldpass, -1)) {
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ERR_raise(ERR_LIB_PKCS12, PKCS12_R_MAC_VERIFY_FAILURE);
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return 0;
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}
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if (!newpass_p12(p12, oldpass, newpass)) {
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ERR_raise(ERR_LIB_PKCS12, PKCS12_R_PARSE_ERROR);
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return 0;
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}
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return 1;
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}
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/* Parse the outer PKCS#12 structure */
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static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass)
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{
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STACK_OF(PKCS7) *asafes = NULL, *newsafes = NULL;
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STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
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int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0;
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PKCS7 *p7, *p7new;
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ASN1_OCTET_STRING *p12_data_tmp = NULL, *macoct = NULL;
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unsigned char mac[EVP_MAX_MD_SIZE];
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unsigned int maclen;
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int rv = 0;
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if ((asafes = PKCS12_unpack_authsafes(p12)) == NULL)
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goto err;
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if ((newsafes = sk_PKCS7_new_null()) == NULL)
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goto err;
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for (i = 0; i < sk_PKCS7_num(asafes); i++) {
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p7 = sk_PKCS7_value(asafes, i);
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bagnid = OBJ_obj2nid(p7->type);
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if (bagnid == NID_pkcs7_data) {
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bags = PKCS12_unpack_p7data(p7);
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} else if (bagnid == NID_pkcs7_encrypted) {
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bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
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if (!alg_get(p7->d.encrypted->enc_data->algorithm,
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&pbe_nid, &pbe_iter, &pbe_saltlen))
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goto err;
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} else {
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continue;
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}
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if (bags == NULL)
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goto err;
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if (!newpass_bags(bags, oldpass, newpass))
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goto err;
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/* Repack bag in same form with new password */
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if (bagnid == NID_pkcs7_data)
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p7new = PKCS12_pack_p7data(bags);
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else
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p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL,
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pbe_saltlen, pbe_iter, bags);
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if (p7new == NULL || !sk_PKCS7_push(newsafes, p7new))
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goto err;
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sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
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bags = NULL;
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}
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/* Repack safe: save old safe in case of error */
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p12_data_tmp = p12->authsafes->d.data;
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if ((p12->authsafes->d.data = ASN1_OCTET_STRING_new()) == NULL)
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goto err;
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if (!PKCS12_pack_authsafes(p12, newsafes))
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goto err;
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if (!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen))
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goto err;
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X509_SIG_getm(p12->mac->dinfo, NULL, &macoct);
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if (!ASN1_OCTET_STRING_set(macoct, mac, maclen))
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goto err;
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rv = 1;
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err:
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/* Restore old safe if necessary */
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if (rv == 1) {
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ASN1_OCTET_STRING_free(p12_data_tmp);
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} else if (p12_data_tmp != NULL) {
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ASN1_OCTET_STRING_free(p12->authsafes->d.data);
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p12->authsafes->d.data = p12_data_tmp;
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}
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sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
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sk_PKCS7_pop_free(asafes, PKCS7_free);
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sk_PKCS7_pop_free(newsafes, PKCS7_free);
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return rv;
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}
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static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass,
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const char *newpass)
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{
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int i;
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for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
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if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), oldpass, newpass))
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return 0;
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}
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return 1;
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}
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/* Change password of safebag: only needs handle shrouded keybags */
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static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass,
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const char *newpass)
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{
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PKCS8_PRIV_KEY_INFO *p8;
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X509_SIG *p8new;
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int p8_nid, p8_saltlen, p8_iter;
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const X509_ALGOR *shalg;
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if (PKCS12_SAFEBAG_get_nid(bag) != NID_pkcs8ShroudedKeyBag)
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return 1;
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if ((p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1)) == NULL)
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return 0;
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X509_SIG_get0(bag->value.shkeybag, &shalg, NULL);
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if (!alg_get(shalg, &p8_nid, &p8_iter, &p8_saltlen)) {
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PKCS8_PRIV_KEY_INFO_free(p8);
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return 0;
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}
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p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen,
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p8_iter, p8);
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PKCS8_PRIV_KEY_INFO_free(p8);
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if (p8new == NULL)
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return 0;
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X509_SIG_free(bag->value.shkeybag);
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bag->value.shkeybag = p8new;
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return 1;
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}
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static int alg_get(const X509_ALGOR *alg, int *pnid, int *piter,
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int *psaltlen)
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{
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PBEPARAM *pbe;
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pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), alg->parameter);
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if (pbe == NULL)
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return 0;
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*pnid = OBJ_obj2nid(alg->algorithm);
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*piter = ASN1_INTEGER_get(pbe->iter);
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*psaltlen = pbe->salt->length;
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PBEPARAM_free(pbe);
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return 1;
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}
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