mirror of
https://github.com/openssl/openssl.git
synced 2024-12-09 05:51:54 +08:00
0fe17491c3
To avoid possible race conditions don't switch password format using global state in crypto/pkcs12 Reviewed-by: Richard Levitte <levitte@openssl.org>
240 lines
7.6 KiB
C
240 lines
7.6 KiB
C
/*
|
|
* Copyright 1999-2016 The OpenSSL Project Authors. All Rights Reserved.
|
|
*
|
|
* Licensed under the OpenSSL license (the "License"). You may not use
|
|
* this file except in compliance with the License. You can obtain a copy
|
|
* in the file LICENSE in the source distribution or at
|
|
* https://www.openssl.org/source/license.html
|
|
*/
|
|
|
|
# include <stdio.h>
|
|
# include "internal/cryptlib.h"
|
|
# include <openssl/crypto.h>
|
|
# include <openssl/hmac.h>
|
|
# include <openssl/rand.h>
|
|
# include <openssl/pkcs12.h>
|
|
# include "p12_lcl.h"
|
|
|
|
int PKCS12_mac_present(const PKCS12 *p12)
|
|
{
|
|
return p12->mac ? 1 : 0;
|
|
}
|
|
|
|
void PKCS12_get0_mac(const ASN1_OCTET_STRING **pmac,
|
|
const X509_ALGOR **pmacalg,
|
|
const ASN1_OCTET_STRING **psalt,
|
|
const ASN1_INTEGER **piter,
|
|
const PKCS12 *p12)
|
|
{
|
|
if (p12->mac) {
|
|
X509_SIG_get0(p12->mac->dinfo, pmacalg, pmac);
|
|
if (psalt)
|
|
*psalt = p12->mac->salt;
|
|
if (piter)
|
|
*piter = p12->mac->iter;
|
|
} else {
|
|
if (pmac)
|
|
*pmac = NULL;
|
|
if (pmacalg)
|
|
*pmacalg = NULL;
|
|
if (psalt)
|
|
*psalt = NULL;
|
|
if (piter)
|
|
*piter = NULL;
|
|
}
|
|
}
|
|
|
|
# define TK26_MAC_KEY_LEN 32
|
|
|
|
static int pkcs12_gen_gost_mac_key(const char *pass, int passlen,
|
|
const unsigned char *salt, int saltlen,
|
|
int iter, int keylen, unsigned char *key,
|
|
const EVP_MD *digest)
|
|
{
|
|
unsigned char out[96];
|
|
|
|
if (keylen != TK26_MAC_KEY_LEN) {
|
|
return 0;
|
|
}
|
|
|
|
if (!PKCS5_PBKDF2_HMAC(pass, passlen, salt, saltlen, iter,
|
|
digest, sizeof(out), out)) {
|
|
return 0;
|
|
}
|
|
memcpy(key, out + sizeof(out) - TK26_MAC_KEY_LEN, TK26_MAC_KEY_LEN);
|
|
OPENSSL_cleanse(out, sizeof(out));
|
|
return 1;
|
|
}
|
|
|
|
/* Generate a MAC */
|
|
static int pkcs12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
|
|
unsigned char *mac, unsigned int *maclen,
|
|
int (*pkcs12_key_gen)(const char *pass, int passlen,
|
|
unsigned char *salt, int slen,
|
|
int id, int iter, int n,
|
|
unsigned char *out,
|
|
const EVP_MD *md_type))
|
|
{
|
|
const EVP_MD *md_type;
|
|
HMAC_CTX *hmac = NULL;
|
|
unsigned char key[EVP_MAX_MD_SIZE], *salt;
|
|
int saltlen, iter;
|
|
int md_size = 0;
|
|
int md_type_nid;
|
|
const X509_ALGOR *macalg;
|
|
const ASN1_OBJECT *macoid;
|
|
|
|
if (pkcs12_key_gen == NULL)
|
|
pkcs12_key_gen = PKCS12_key_gen_utf8;
|
|
|
|
if (!PKCS7_type_is_data(p12->authsafes)) {
|
|
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_CONTENT_TYPE_NOT_DATA);
|
|
return 0;
|
|
}
|
|
|
|
salt = p12->mac->salt->data;
|
|
saltlen = p12->mac->salt->length;
|
|
if (!p12->mac->iter)
|
|
iter = 1;
|
|
else
|
|
iter = ASN1_INTEGER_get(p12->mac->iter);
|
|
X509_SIG_get0(p12->mac->dinfo, &macalg, NULL);
|
|
X509_ALGOR_get0(&macoid, NULL, NULL, macalg);
|
|
if ((md_type = EVP_get_digestbyobj(macoid)) == NULL) {
|
|
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_UNKNOWN_DIGEST_ALGORITHM);
|
|
return 0;
|
|
}
|
|
md_size = EVP_MD_size(md_type);
|
|
md_type_nid = EVP_MD_type(md_type);
|
|
if (md_size < 0)
|
|
return 0;
|
|
if ((md_type_nid == NID_id_GostR3411_94
|
|
|| md_type_nid == NID_id_GostR3411_2012_256
|
|
|| md_type_nid == NID_id_GostR3411_2012_512)
|
|
&& !getenv("LEGACY_GOST_PKCS12")) {
|
|
md_size = TK26_MAC_KEY_LEN;
|
|
if (!pkcs12_gen_gost_mac_key(pass, passlen, salt, saltlen, iter,
|
|
md_size, key, md_type)) {
|
|
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
|
|
return 0;
|
|
}
|
|
} else
|
|
if (!(*pkcs12_key_gen)(pass, passlen, salt, saltlen, PKCS12_MAC_ID,
|
|
iter, md_size, key, md_type)) {
|
|
PKCS12err(PKCS12_F_PKCS12_GEN_MAC, PKCS12_R_KEY_GEN_ERROR);
|
|
return 0;
|
|
}
|
|
hmac = HMAC_CTX_new();
|
|
if (!HMAC_Init_ex(hmac, key, md_size, md_type, NULL)
|
|
|| !HMAC_Update(hmac, p12->authsafes->d.data->data,
|
|
p12->authsafes->d.data->length)
|
|
|| !HMAC_Final(hmac, mac, maclen)) {
|
|
HMAC_CTX_free(hmac);
|
|
return 0;
|
|
}
|
|
HMAC_CTX_free(hmac);
|
|
return 1;
|
|
}
|
|
|
|
int PKCS12_gen_mac(PKCS12 *p12, const char *pass, int passlen,
|
|
unsigned char *mac, unsigned int *maclen)
|
|
{
|
|
return pkcs12_gen_mac(p12, pass, passlen, mac, maclen, NULL);
|
|
}
|
|
|
|
/* Verify the mac */
|
|
int PKCS12_verify_mac(PKCS12 *p12, const char *pass, int passlen)
|
|
{
|
|
unsigned char mac[EVP_MAX_MD_SIZE];
|
|
unsigned int maclen;
|
|
const ASN1_OCTET_STRING *macoct;
|
|
|
|
if (p12->mac == NULL) {
|
|
PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_ABSENT);
|
|
return 0;
|
|
}
|
|
if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen,
|
|
PKCS12_key_gen_utf8)) {
|
|
PKCS12err(PKCS12_F_PKCS12_VERIFY_MAC, PKCS12_R_MAC_GENERATION_ERROR);
|
|
return 0;
|
|
}
|
|
X509_SIG_get0(p12->mac->dinfo, NULL, &macoct);
|
|
if ((maclen != (unsigned int)ASN1_STRING_length(macoct))
|
|
|| CRYPTO_memcmp(mac, ASN1_STRING_get0_data(macoct), maclen) != 0)
|
|
return 0;
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Set a mac */
|
|
|
|
int PKCS12_set_mac(PKCS12 *p12, const char *pass, int passlen,
|
|
unsigned char *salt, int saltlen, int iter,
|
|
const EVP_MD *md_type)
|
|
{
|
|
unsigned char mac[EVP_MAX_MD_SIZE];
|
|
unsigned int maclen;
|
|
ASN1_OCTET_STRING *macoct;
|
|
|
|
if (!md_type)
|
|
md_type = EVP_sha1();
|
|
if (PKCS12_setup_mac(p12, iter, salt, saltlen, md_type) == PKCS12_ERROR) {
|
|
PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_SETUP_ERROR);
|
|
return 0;
|
|
}
|
|
/*
|
|
* Note that output mac is forced to UTF-8...
|
|
*/
|
|
if (!pkcs12_gen_mac(p12, pass, passlen, mac, &maclen,
|
|
PKCS12_key_gen_utf8)) {
|
|
PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_GENERATION_ERROR);
|
|
return 0;
|
|
}
|
|
X509_SIG_getm(p12->mac->dinfo, NULL, &macoct);
|
|
if (!ASN1_OCTET_STRING_set(macoct, mac, maclen)) {
|
|
PKCS12err(PKCS12_F_PKCS12_SET_MAC, PKCS12_R_MAC_STRING_SET_ERROR);
|
|
return 0;
|
|
}
|
|
return 1;
|
|
}
|
|
|
|
/* Set up a mac structure */
|
|
int PKCS12_setup_mac(PKCS12 *p12, int iter, unsigned char *salt, int saltlen,
|
|
const EVP_MD *md_type)
|
|
{
|
|
X509_ALGOR *macalg;
|
|
|
|
if ((p12->mac = PKCS12_MAC_DATA_new()) == NULL)
|
|
return PKCS12_ERROR;
|
|
if (iter > 1) {
|
|
if ((p12->mac->iter = ASN1_INTEGER_new()) == NULL) {
|
|
PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
if (!ASN1_INTEGER_set(p12->mac->iter, iter)) {
|
|
PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
}
|
|
if (!saltlen)
|
|
saltlen = PKCS12_SALT_LEN;
|
|
if ((p12->mac->salt->data = OPENSSL_malloc(saltlen)) == NULL) {
|
|
PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
p12->mac->salt->length = saltlen;
|
|
if (!salt) {
|
|
if (RAND_bytes(p12->mac->salt->data, saltlen) <= 0)
|
|
return 0;
|
|
} else
|
|
memcpy(p12->mac->salt->data, salt, saltlen);
|
|
X509_SIG_getm(p12->mac->dinfo, &macalg, NULL);
|
|
if (!X509_ALGOR_set0(macalg, OBJ_nid2obj(EVP_MD_type(md_type)),
|
|
V_ASN1_NULL, NULL)) {
|
|
PKCS12err(PKCS12_F_PKCS12_SETUP_MAC, ERR_R_MALLOC_FAILURE);
|
|
return 0;
|
|
}
|
|
|
|
return 1;
|
|
}
|