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(const ASN1_OCTET_STRING **pmac,
24 const X509_ALGOR **pmacalg,
25 const ASN1_OCTET_STRING **psalt,
26 const ASN1_INTEGER **piter,
30 X509_SIG_get0(p12->mac->dinfo, pmacalg, pmac);
32 *psalt = p12->mac->salt;
34 *piter = p12->mac->iter;
47 # define TK26_MAC_KEY_LEN 32
49 static int pkcs12_gen_gost_mac_key(const char *pass, int passlen,
50 const unsigned char *salt, int saltlen,
51 int iter, int keylen, unsigned char *key,
54 unsigned char out[96];
56 if (keylen != TK26_MAC_KEY_LEN) {
60 if (!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter,
61 digest, sizeof(out), out)) {
64 memcpy(key, out + sizeof(out) - TK26_MAC_KEY_LEN, TK26_MAC_KEY_LEN);
65 OPENSSL_cleanse(out, sizeof(out));
70 int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
71 unsigned char *mac, unsigned int *maclen)
73 const EVP_MD *md_type;
74 HMAC_CTX *hmac = NULL;
75 unsigned char key[EVP_MAX_MD_SIZE], *salt;
79 const X509_ALGOR *macalg;
80 const ASN1_OBJECT *macoid;
82 if (!PKCS7_type_is_data(p12->authsafes)) {
83 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
87 salt = p12->mac->salt->data;
88 saltlen = p12->mac->salt->length;
92 iter = ASN1_INTEGER_get(p12->mac->iter);
93 X509_SIG_get0(p12->mac->dinfo, &macalg, NULL);
94 X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
95 if ((md_type = EVP_get_digestbyobj(macoid)) == NULL) {
96 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
99 md_size = EVP_MD_size(md_type);
100 md_type_nid = EVP_MD_type(md_type);
103 if ((md_type_nid == NID_id_GostR3411_94
104 || md_type_nid == NID_id_GostR3411_2012_256
105 || md_type_nid == NID_id_GostR3411_2012_512)
106 && !getenv("LEGACY_GOST_PKCS12")) {
107 md_size = TK26_MAC_KEY_LEN;
108 if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
109 md_size, key, md_type)) {
110 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
114 if (!PKCS12_key_gen(pass, passlen, salt, saltlen, PKCS12_MAC_ID, iter,
115 md_size, key, md_type)) {
116 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
119 hmac = HMAC_CTX_new();
120 if (!HMAC_Init_ex(hmac, key, md_size, md_type, NULL)
121 || !HMAC_Update(hmac, p12->authsafes->d.data->data,
122 p12->authsafes->d.data->length)
123 || !HMAC_Final(hmac, mac, maclen)) {
132 int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
134 unsigned char mac[EVP_MAX_MD_SIZE];
136 const ASN1_OCTET_STRING *macoct;
138 if (p12->mac == NULL) {
139 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT);
142 if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) {
143 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR);
146 X509_SIG_get0(p12->mac->dinfo, NULL, &macoct);
147 if ((maclen != (unsigned int)ASN1_STRING_length(macoct))
148 || CRYPTO_memcmp(mac, ASN1_STRING_get0_data(macoct), maclen))
155 int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
156 unsigned char *salt, int saltlen, int iter,
157 const EVP_MD *md_type)
159 unsigned char mac[EVP_MAX_MD_SIZE];
161 ASN1_OCTET_STRING *macoct;
164 md_type = EVP_sha1();
165 if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) {
166 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR);
169 if (!PKCS12_gen_mac(p12, pass, passlen, mac, &maclen)) {
170 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR);
173 X509_SIG_get0_mutable(p12->mac->dinfo, NULL, &macoct);
174 if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) {
175 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR);
181 /* Set up a mac structure */
182 int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
183 const EVP_MD *md_type)
187 if ((p12->mac = PKCS12_MAC_DATA_new()) == NULL)
190 if ((p12->mac->iter = ASN1_INTEGER_new()) == NULL) {
191 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
194 if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
195 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
200 saltlen = PKCS12_SALT_LEN;
201 if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL) {
202 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
205 p12->mac->salt->length = saltlen;
207 if (RAND_bytes(p12->mac->salt->data, saltlen) <= 0)
210 memcpy(p12->mac->salt->data, salt, saltlen);
211 X509_SIG_get0_mutable(p12->mac->dinfo, &macalg, NULL);
212 if (!X509_ALGOR_set0(macalg, OBJ_nid2obj(EVP_MD_type(md_type)),
213 V_ASN1_NULL, NULL)) {
214 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);