| 1 | /*
|
|---|
| 2 | Unix SMB/CIFS implementation.
|
|---|
| 3 | HMAC MD5 code for use in NTLMv2
|
|---|
| 4 | Copyright (C) Luke Kenneth Casson Leighton 1996-2000
|
|---|
| 5 | Copyright (C) Andrew Tridgell 1992-2000
|
|---|
| 6 |
|
|---|
| 7 | This program is free software; you can redistribute it and/or modify
|
|---|
| 8 | it under the terms of the GNU General Public License as published by
|
|---|
| 9 | the Free Software Foundation; either version 3 of the License, or
|
|---|
| 10 | (at your option) any later version.
|
|---|
| 11 |
|
|---|
| 12 | This program is distributed in the hope that it will be useful,
|
|---|
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|---|
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|---|
| 15 | GNU General Public License for more details.
|
|---|
| 16 |
|
|---|
| 17 | You should have received a copy of the GNU General Public License
|
|---|
| 18 | along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|---|
| 19 | */
|
|---|
| 20 |
|
|---|
| 21 | /* taken direct from rfc2104 implementation and modified for suitable use
|
|---|
| 22 | * for ntlmv2.
|
|---|
| 23 | */
|
|---|
| 24 |
|
|---|
| 25 | #include "includes.h"
|
|---|
| 26 |
|
|---|
| 27 | /***********************************************************************
|
|---|
| 28 | the rfc 2104 version of hmac_md5 initialisation.
|
|---|
| 29 | ***********************************************************************/
|
|---|
| 30 |
|
|---|
| 31 | void hmac_md5_init_rfc2104(const unsigned char *key, int key_len, HMACMD5Context *ctx)
|
|---|
| 32 | {
|
|---|
| 33 | int i;
|
|---|
| 34 | unsigned char tk[16];
|
|---|
| 35 |
|
|---|
| 36 | /* if key is longer than 64 bytes reset it to key=MD5(key) */
|
|---|
| 37 | if (key_len > 64) {
|
|---|
| 38 | struct MD5Context tctx;
|
|---|
| 39 |
|
|---|
| 40 | MD5Init(&tctx);
|
|---|
| 41 | MD5Update(&tctx, key, key_len);
|
|---|
| 42 | MD5Final(tk, &tctx);
|
|---|
| 43 |
|
|---|
| 44 | key = tk;
|
|---|
| 45 | key_len = 16;
|
|---|
| 46 | }
|
|---|
| 47 |
|
|---|
| 48 | /* start out by storing key in pads */
|
|---|
| 49 | ZERO_STRUCT(ctx->k_ipad);
|
|---|
| 50 | ZERO_STRUCT(ctx->k_opad);
|
|---|
| 51 | memcpy( ctx->k_ipad, key, key_len);
|
|---|
| 52 | memcpy( ctx->k_opad, key, key_len);
|
|---|
|
|---|
