mirror of
https://github.com/samba-team/samba.git
synced 2024-12-24 21:34:56 +03:00
ad4505624e
This allows Samba to use GnuTLS for drsuapi_{en,de}crypt_attribute_value() Signed-off-by: Andrew Bartlett <abartlet@samba.org> Reviewed-by: Andreas Schneider <asn@samba.org>
94 lines
2.5 KiB
C
94 lines
2.5 KiB
C
/*
|
|
Unix SMB/CIFS implementation.
|
|
Wrapper for gnutls hash and encryption functions
|
|
|
|
Copyright (C) Stefan Metzmacher <metze@samba.org> 2007
|
|
Copyright (C) Andrew Bartlett <abartlet@samba.org> 2009-2019
|
|
Copyright (c) Andreas Schneider <asn@samba.org> 2019
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 3 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
*/
|
|
|
|
/*
|
|
* This (arcfour over data with a key combined from two imputs, one
|
|
* the key another the confounder), is a common pattern in pre-AES
|
|
* windows cryptography
|
|
*
|
|
* Some protocols put the confounder first, others second so both
|
|
* parameters are named key_input here.
|
|
*
|
|
*/
|
|
|
|
#include "includes.h"
|
|
#include "lib/util/data_blob.h"
|
|
#include <gnutls/gnutls.h>
|
|
#include <gnutls/crypto.h>
|
|
#include "gnutls_helpers.h"
|
|
#include "lib/util/memory.h"
|
|
|
|
int samba_gnutls_arcfour_confounded_md5(const DATA_BLOB *key_input1,
|
|
const DATA_BLOB *key_input2,
|
|
DATA_BLOB *data,
|
|
enum samba_gnutls_direction encrypt)
|
|
{
|
|
int rc;
|
|
gnutls_hash_hd_t hash_hnd = NULL;
|
|
uint8_t confounded_key[16];
|
|
gnutls_cipher_hd_t cipher_hnd = NULL;
|
|
gnutls_datum_t confounded_key_datum = {
|
|
.data = confounded_key,
|
|
.size = sizeof(confounded_key),
|
|
};
|
|
|
|
rc = gnutls_hash_init(&hash_hnd, GNUTLS_DIG_MD5);
|
|
if (rc < 0) {
|
|
return rc;
|
|
}
|
|
rc = gnutls_hash(hash_hnd, key_input1->data, key_input1->length);
|
|
if (rc < 0) {
|
|
gnutls_hash_deinit(hash_hnd, NULL);
|
|
return rc;
|
|
}
|
|
rc = gnutls_hash(hash_hnd, key_input2->data, key_input2->length);
|
|
if (rc < 0) {
|
|
gnutls_hash_deinit(hash_hnd, NULL);
|
|
return rc;
|
|
}
|
|
|
|
gnutls_hash_deinit(hash_hnd, confounded_key);
|
|
|
|
rc = gnutls_cipher_init(&cipher_hnd,
|
|
GNUTLS_CIPHER_ARCFOUR_128,
|
|
&confounded_key_datum,
|
|
NULL);
|
|
if (rc < 0) {
|
|
return rc;
|
|
}
|
|
|
|
if (encrypt == SAMBA_GNUTLS_ENCRYPT) {
|
|
rc = gnutls_cipher_encrypt(cipher_hnd,
|
|
data->data,
|
|
data->length);
|
|
} else {
|
|
rc = gnutls_cipher_decrypt(cipher_hnd,
|
|
data->data,
|
|
data->length);
|
|
}
|
|
gnutls_cipher_deinit(cipher_hnd);
|
|
ZERO_ARRAY(confounded_key);
|
|
|
|
return rc;
|
|
}
|