2 * Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
4 * Licensed under the OpenSSL license (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
11 # include "internal/cryptlib.h"
12 # include <openssl/crypto.h>
13 # include <openssl/hmac.h>
14 # include <openssl/rand.h>
15 # include <openssl/pkcs12.h>
18 int PKCS12_mac_present(PKCS12 *p12)
20 return p12->mac ? 1 : 0;
23 void PKCS12_get0_mac(ASN1_OCTET_STRING **pmac, X509_ALGOR **pmacalg,
24 ASN1_OCTET_STRING **psalt, ASN1_INTEGER **piter,
28 X509_SIG_get0(pmacalg, pmac, p12->mac->dinfo);
30 *psalt = p12->mac->salt;
32 *piter = p12->mac->iter;
45 # define TK26_MAC_KEY_LEN 32
47 static int pkcs12_gen_gost_mac_key(const char *pass, int passlen,
48 const unsigned char *salt, int saltlen,
49 int iter, int keylen, unsigned char *key,
52 unsigned char out[96];
54 if (keylen != TK26_MAC_KEY_LEN) {
58 if (!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter,
59 digest, sizeof(out), out)) {
62 memcpy(key, out + sizeof(out) - TK26_MAC_KEY_LEN, TK26_MAC_KEY_LEN);
63 OPENSSL_cleanse(out, sizeof(out));
68 int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
69 unsigned char *mac, unsigned int *maclen)
71 const EVP_MD *md_type;
72 HMAC_CTX *hmac = NULL;
73 unsigned char key[EVP_MAX_MD_SIZE], *salt;
80 if (!PKCS7_type_is_data(p12->authsafes)) {
81 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
85 salt = p12->mac->salt->data;
86 saltlen = p12->mac->salt->length;
90 iter = ASN1_INTEGER_get(p12->mac->iter);
91 X509_SIG_get0(&macalg, NULL, p12->mac->dinfo);
92 X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
93 if ((md_type = EVP_get_digestbyobj(macoid)) == NULL) {
94 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
97 md_size = EVP_MD_size(md_type);
98 md_type_nid = EVP_MD_type(md_type);
101 if ((md_type_nid == NID_id_GostR3411_94
102 || md_type_nid == NID_id_GostR3411_2012_256
103 || md_type_nid == NID_id_GostR3411_2012_512)
104 && !getenv("LEGACY_GOST_PKCS12")) {
105 md_size = TK26_MAC_KEY_LEN;
106 if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
107 md_size, key, md_type)) {
108 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
112 if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
113 md_size, key, md_type)) {
114 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
117 hmac = HMAC_CTX_new();
118 if (!HMAC_Init_ex(hmac, key, md_size, md_type, NULL)
119 || !HMAC_Update(hmac, p12->authsafes->d.data->data,
120 p12->authsafes->d.data->length)
121 || !HMAC_Final(hmac, mac, maclen)) {
130 int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
132 unsigned char mac[EVP_MAX_MD_SIZE];
134 ASN1_OCTET_STRING *macoct;
136 if (p12->mac == NULL) {
137 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT);
140 if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) {
141 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR);
144 X509_SIG_get0(NULL, &macoct, p12->mac->dinfo);
145 if ((maclen != (unsigned int)ASN1_STRING_length(macoct))
146 || CRYPTO_memcmp(mac, ASN1_STRING_get0_data(macoct), maclen))
153 int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
154 unsigned char *salt, int saltlen, int iter,
155 const EVP_MD *md_type)
157 unsigned char mac[EVP_MAX_MD_SIZE];
159 ASN1_OCTET_STRING *macoct;
162 md_type = EVP_sha1();
163 if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) {
164 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR);
167 if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) {
168 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR);
171 X509_SIG_get0(NULL, &macoct, p12->mac->dinfo);
172 if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) {
173 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR);
179 /* Set up a mac structure */
180 int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
181 const EVP_MD *md_type)
185 if ((p12->mac = PKCS12_MAC_DATA_new()) == NULL)
188 if ((p12->mac->iter = ASN1_INTEGER_new()) == NULL) {
189 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
192 if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
193 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
198 saltlen = PKCS12_SALT_LEN;
199 if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL) {
200 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
203 p12->mac->salt->length = saltlen;
205 if (RAND_bytes(p12->mac->salt->data, saltlen) <= 0)
208 memcpy(p12->mac->salt->data, salt, saltlen);
209 X509_SIG_get0(&macalg, NULL, p12->mac->dinfo);
210 if (!X509_ALGOR_set0(macalg, OBJ_nid2obj(EVP_MD_type(md_type)),
211 V_ASN1_NULL, NULL)) {
212 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);