2 * Copyright 1999-2020 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
13 #include <openssl/pem.h>
14 #include <openssl/err.h>
15 #include <openssl/pkcs12.h>
16 #include "p12_local.h"
18 DEFINE_STACK_OF(PKCS7)
19 DEFINE_STACK_OF(PKCS12_SAFEBAG)
21 /* PKCS#12 password change routine */
23 static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass);
24 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass,
26 static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass,
28 static int alg_get(const X509_ALGOR *alg, int *pnid, int *piter,
32 * Change the password on a PKCS#12 structure.
35 int PKCS12_newpass(PKCS12 *p12, const char *oldpass, const char *newpass)
37 /* Check for NULL PKCS12 structure */
40 PKCS12err(PKCS12_F_PKCS12_NEWPASS,
41 PKCS12_R_INVALID_NULL_PKCS12_POINTER);
47 if (!PKCS12_verify_mac(p12, oldpass, -1)) {
48 PKCS12err(PKCS12_F_PKCS12_NEWPASS, PKCS12_R_MAC_VERIFY_FAILURE);
52 if (!newpass_p12(p12, oldpass, newpass)) {
53 PKCS12err(PKCS12_F_PKCS12_NEWPASS, PKCS12_R_PARSE_ERROR);
60 /* Parse the outer PKCS#12 structure */
62 static int newpass_p12(PKCS12 *p12, const char *oldpass, const char *newpass)
64 STACK_OF(PKCS7) *asafes = NULL, *newsafes = NULL;
65 STACK_OF(PKCS12_SAFEBAG) *bags = NULL;
66 int i, bagnid, pbe_nid = 0, pbe_iter = 0, pbe_saltlen = 0;
68 ASN1_OCTET_STRING *p12_data_tmp = NULL, *macoct = NULL;
69 unsigned char mac[EVP_MAX_MD_SIZE];
73 if ((asafes = PKCS12_unpack_authsafes(p12)) == NULL)
75 if ((newsafes = sk_PKCS7_new_null()) == NULL)
77 for (i = 0; i < sk_PKCS7_num(asafes); i++) {
78 p7 = sk_PKCS7_value(asafes, i);
79 bagnid = OBJ_obj2nid(p7->type);
80 if (bagnid == NID_pkcs7_data) {
81 bags = PKCS12_unpack_p7data(p7);
82 } else if (bagnid == NID_pkcs7_encrypted) {
83 bags = PKCS12_unpack_p7encdata(p7, oldpass, -1);
84 if (!alg_get(p7->d.encrypted->enc_data->algorithm,
85 &pbe_nid, &pbe_iter, &pbe_saltlen))
92 if (!newpass_bags(bags, oldpass, newpass))
94 /* Repack bag in same form with new password */
95 if (bagnid == NID_pkcs7_data)
96 p7new = PKCS12_pack_p7data(bags);
98 p7new = PKCS12_pack_p7encdata(pbe_nid, newpass, -1, NULL,
99 pbe_saltlen, pbe_iter, bags);
100 if (p7new == NULL || !sk_PKCS7_push(newsafes, p7new))
102 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
106 /* Repack safe: save old safe in case of error */
108 p12_data_tmp = p12->authsafes->d.data;
109 if ((p12->authsafes->d.data = ASN1_OCTET_STRING_new()) == NULL)
111 if (!PKCS12_pack_authsafes(p12, newsafes))
114 if (!PKCS12_gen_mac(p12, newpass, -1, mac, &maclen))
116 X509_SIG_getm(p12->mac->dinfo, NULL, &macoct);
117 if (!ASN1_OCTET_STRING_set(macoct, mac, maclen))
123 /* Restore old safe if necessary */
125 ASN1_OCTET_STRING_free(p12_data_tmp);
126 } else if (p12_data_tmp != NULL) {
127 ASN1_OCTET_STRING_free(p12->authsafes->d.data);
128 p12->authsafes->d.data = p12_data_tmp;
130 sk_PKCS12_SAFEBAG_pop_free(bags, PKCS12_SAFEBAG_free);
131 sk_PKCS7_pop_free(asafes, PKCS7_free);
132 sk_PKCS7_pop_free(newsafes, PKCS7_free);
136 static int newpass_bags(STACK_OF(PKCS12_SAFEBAG) *bags, const char *oldpass,
140 for (i = 0; i < sk_PKCS12_SAFEBAG_num(bags); i++) {
141 if (!newpass_bag(sk_PKCS12_SAFEBAG_value(bags, i), oldpass, newpass))
147 /* Change password of safebag: only needs handle shrouded keybags */
149 static int newpass_bag(PKCS12_SAFEBAG *bag, const char *oldpass,
152 PKCS8_PRIV_KEY_INFO *p8;
154 int p8_nid, p8_saltlen, p8_iter;
155 const X509_ALGOR *shalg;
157 if (PKCS12_SAFEBAG_get_nid(bag) != NID_pkcs8ShroudedKeyBag)
160 if ((p8 = PKCS8_decrypt(bag->value.shkeybag, oldpass, -1)) == NULL)
162 X509_SIG_get0(bag->value.shkeybag, &shalg, NULL);
163 if (!alg_get(shalg, &p8_nid, &p8_iter, &p8_saltlen))
165 p8new = PKCS8_encrypt(p8_nid, NULL, newpass, -1, NULL, p8_saltlen,
167 PKCS8_PRIV_KEY_INFO_free(p8);
170 X509_SIG_free(bag->value.shkeybag);
171 bag->value.shkeybag = p8new;
175 static int alg_get(const X509_ALGOR *alg, int *pnid, int *piter,
180 pbe = ASN1_TYPE_unpack_sequence(ASN1_ITEM_rptr(PBEPARAM), alg->parameter);
183 *pnid = OBJ_obj2nid(alg->algorithm);
184 *piter = ASN1_INTEGER_get(pbe->iter);
185 *psaltlen = pbe->salt->length;