blob: 19dc0d71ab0ef799bf205e13a381bf607a50db0a (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
|
/* crc16.h
* Declaration of CRC-16 routines and table
*
* 2004 Richard van der Hoff <richardv@mxtelecom.com>
*
* $Id$
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@xxxxxxxxxxxx>
* Copyright 1998 Gerald Combs
*
* Copied from README.developer
*
* 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 2
* 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, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/* Calculate the CCITT/ITU/CRC-16 16-bit CRC
(parameters for this CRC are:
Polynomial: x^16 + x^12 + x^5 + 1 (0x1021);
Start value 0xFFFF;
XOR result with 0xFFFF;
First bit is LSB)
*/
extern guint16 crc16_ccitt(const unsigned char *buf, guint len);
extern guint16 crc16_ccitt_tvb(tvbuff_t *tvb, unsigned int len);
|
