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/*
* Unix SMB/CIFS implementation.
* RPC Pipe client / server routines
* Copyright (C) Guenther Deschner 2008.
*
* 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/>.
*/
#include "includes.h"
#include "../libcli/auth/libcli_auth.h"
#include "../lib/crypto/arcfour.h"
#include "rpc_client/init_samr.h"
#include <gnutls/gnutls.h>
#include <gnutls/crypto.h>
/*************************************************************************
inits a samr_CryptPasswordEx structure
*************************************************************************/
void init_samr_CryptPasswordEx(const char *pwd,
DATA_BLOB *session_key,
struct samr_CryptPasswordEx *pwd_buf)
{
/* samr_CryptPasswordEx */
uint8_t pwbuf[532];
gnutls_hash_hd_t hash_hnd = NULL;
uint8_t confounder[16];
DATA_BLOB confounded_session_key = data_blob(NULL, 16);
int rc;
encode_pw_buffer(pwbuf, pwd, STR_UNICODE);
generate_random_buffer((uint8_t *)confounder, 16);
rc = gnutls_hash_init(&hash_hnd, GNUTLS_DIG_MD5);
if (rc < 0) {
goto out;
}
rc = gnutls_hash(hash_hnd, confounder, 16);
if (rc < 0) {
gnutls_hash_deinit(hash_hnd, NULL);
goto out;
}
rc = gnutls_hash(hash_hnd, session_key->data, session_key->length);
if (rc < 0) {
gnutls_hash_deinit(hash_hnd, NULL);
goto out;
}
gnutls_hash_deinit(hash_hnd, confounded_session_key.data);
arcfour_crypt_blob(pwbuf, 516, &confounded_session_key);
ZERO_ARRAY_LEN(confounded_session_key.data,
confounded_session_key.length);
data_blob_free(&confounded_session_key);
memcpy(&pwbuf[516], confounder, 16);
ZERO_ARRAY(confounder);
memcpy(pwd_buf->data, pwbuf, sizeof(pwbuf));
ZERO_ARRAY(pwbuf);
out:
return;
}
/*************************************************************************
inits a samr_CryptPassword structure
*************************************************************************/
void init_samr_CryptPassword(const char *pwd,
DATA_BLOB *session_key,
struct samr_CryptPassword *pwd_buf)
{
/* samr_CryptPassword */
encode_pw_buffer(pwd_buf->data, pwd, STR_UNICODE);
arcfour_crypt_blob(pwd_buf->data, 516, session_key);
}
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