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(const 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 static int pkcs12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
71 unsigned char *mac, unsigned int *maclen,
72 int (*pkcs12_key_gen)(const char *pass, int passlen,
73 unsigned char *salt, int slen,
74 int id, int iter, int n,
76 const EVP_MD *md_type))
78 const EVP_MD *md_type;
79 HMAC_CTX *hmac = NULL;
80 unsigned char key[EVP_MAX_MD_SIZE], *salt;
84 const X509_ALGOR *macalg;
85 const ASN1_OBJECT *macoid;
87 if (pkcs12_key_gen == NULL)
88 pkcs12_key_gen = PKCS12_key_gen_utf8;
90 if (!PKCS7_type_is_data(p12->authsafes)) {
91 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
95 salt = p12->mac->salt->data;
96 saltlen = p12->mac->salt->length;
100 iter = ASN1_INTEGER_get(p12->mac->iter);
101 X509_SIG_get0(p12->mac->dinfo, &macalg, NULL);
102 X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
103 if ((md_type = EVP_get_digestbyobj(macoid)) == NULL) {
104 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
107 md_size = EVP_MD_size(md_type);
108 md_type_nid = EVP_MD_type(md_type);
111 if ((md_type_nid == NID_id_GostR3411_94
112 || md_type_nid == NID_id_GostR3411_2012_256
113 || md_type_nid == NID_id_GostR3411_2012_512)
114 && !getenv("LEGACY_GOST_PKCS12")) {
115 md_size = TK26_MAC_KEY_LEN;
116 if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
117 md_size, key, md_type)) {
118 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
122 if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_MAC_ID,
123 iter, md_size, key, md_type)) {
124 PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
127 hmac = HMAC_CTX_new();
128 if (!HMAC_Init_ex(hmac, key, md_size, md_type, NULL)
129 || !HMAC_Update(hmac, p12->authsafes->d.data->data,
130 p12->authsafes->d.data->length)
131 || !HMAC_Final(hmac, mac, maclen)) {
139 int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
140 unsigned char *mac, unsigned int *maclen)
142 return pkcs12_gen_mac(p12, pass, passlen, mac, maclen, NULL);
146 int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
148 unsigned char mac[EVP_MAX_MD_SIZE];
150 const ASN1_OCTET_STRING *macoct;
152 if (p12->mac == NULL) {
153 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT);
156 if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen,
157 PKCS12_key_gen_utf8)) {
158 PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR);
161 X509_SIG_get0(p12->mac->dinfo, NULL, &macoct);
162 if ((maclen != (unsigned int)ASN1_STRING_length(macoct))
163 || CRYPTO_memcmp(mac, ASN1_STRING_get0_data(macoct), maclen) != 0)
171 int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
172 unsigned char *salt, int saltlen, int iter,
173 const EVP_MD *md_type)
175 unsigned char mac[EVP_MAX_MD_SIZE];
177 ASN1_OCTET_STRING *macoct;
180 md_type = EVP_sha1();
181 if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) {
182 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR);
186 * Note that output mac is forced to UTF-8...
188 if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen,
189 PKCS12_key_gen_utf8)) {
190 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR);
193 X509_SIG_getm(p12->mac->dinfo, NULL, &macoct);
194 if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) {
195 PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR);
201 /* Set up a mac structure */
202 int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
203 const EVP_MD *md_type)
207 PKCS12_MAC_DATA_free(p12->mac);
210 if ((p12->mac = PKCS12_MAC_DATA_new()) == NULL)
213 if ((p12->mac->iter = ASN1_INTEGER_new()) == NULL) {
214 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
217 if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
218 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
223 saltlen = PKCS12_SALT_LEN;
224 if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL) {
225 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
228 p12->mac->salt->length = saltlen;
230 if (RAND_bytes(p12->mac->salt->data, saltlen) <= 0)
233 memcpy(p12->mac->salt->data, salt, saltlen);
234 X509_SIG_getm(p12->mac->dinfo, &macalg, NULL);
235 if (!X509_ALGOR_set0(macalg, OBJ_nid2obj(EVP_MD_type(md_type)),
236 V_ASN1_NULL, NULL)) {
237 PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);