forked from osmocom/wireshark
Add crc7 calculation abillity.
svn path=/trunk/; revision=43680
This commit is contained in:
parent
5a63e1b79a
commit
02d23f97b0
|
@ -41,6 +41,7 @@ set(WSUTIL_FILES
|
|||
crc16-plain.c
|
||||
crc32.c
|
||||
crc6.c
|
||||
crc7.c
|
||||
crc8.c
|
||||
crcdrm.c
|
||||
mpeg-audio.c
|
||||
|
|
|
@ -30,12 +30,13 @@
|
|||
# _SOURCES variables).
|
||||
LIBWSUTIL_SRC = \
|
||||
airpdcap_wep.c \
|
||||
crc6.c \
|
||||
crc7.c \
|
||||
crc8.c \
|
||||
crc10.c \
|
||||
crc16.c \
|
||||
crc16-plain.c \
|
||||
crc32.c \
|
||||
crc6.c \
|
||||
crc8.c \
|
||||
crcdrm.c \
|
||||
mpeg-audio.c \
|
||||
privileges.c \
|
||||
|
@ -45,11 +46,12 @@ LIBWSUTIL_SRC = \
|
|||
# Header files that are not generated from other files
|
||||
LIBWSUTIL_INCLUDES = \
|
||||
crc6.h \
|
||||
crc7.h \
|
||||
crc8.h \
|
||||
crc10.h \
|
||||
crc16.h \
|
||||
crc16-plain.h \
|
||||
crc32.h \
|
||||
crc8.h \
|
||||
crcdrm.h \
|
||||
mpeg-audio.h \
|
||||
privileges.h \
|
||||
|
|
|
@ -0,0 +1,94 @@
|
|||
/**
|
||||
* crc7.c
|
||||
*
|
||||
* $Id$
|
||||
*
|
||||
* Functions and types for CRC checks.
|
||||
*
|
||||
* Wireshark - Network traffic analyzer
|
||||
* By Gerald Combs <gerald@wireshark.org>
|
||||
* Copyright 1998 Gerald Combs
|
||||
*
|
||||
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
*
|
||||
* Generated on Wed Jul 11 17:24:30 2012,
|
||||
* by pycrc v0.7.10, http://www.tty1.net/pycrc/
|
||||
* using the configuration:
|
||||
* Width = 7
|
||||
* Poly = 0x45
|
||||
* XorIn = 0x00
|
||||
* ReflectIn = False
|
||||
* XorOut = 0x00
|
||||
* ReflectOut = False
|
||||
* Algorithm = table-driven
|
||||
*****************************************************************************/
|
||||
#ifdef HAVE_CONFIG_H
|
||||
#include "config.h"
|
||||
#endif
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#include <glib.h>
|
||||
#include "crc7.h" /* include the header file generated with pycrc */
|
||||
|
||||
/**
|
||||
* Static table used for the table_driven implementation.
|
||||
*****************************************************************************/
|
||||
static const guint8 crc_table[256] = {
|
||||
0x00, 0x8a, 0x9e, 0x14, 0xb6, 0x3c, 0x28, 0xa2, 0xe6, 0x6c, 0x78, 0xf2, 0x50, 0xda, 0xce, 0x44,
|
||||
0x46, 0xcc, 0xd8, 0x52, 0xf0, 0x7a, 0x6e, 0xe4, 0xa0, 0x2a, 0x3e, 0xb4, 0x16, 0x9c, 0x88, 0x02,
|
||||
0x8c, 0x06, 0x12, 0x98, 0x3a, 0xb0, 0xa4, 0x2e, 0x6a, 0xe0, 0xf4, 0x7e, 0xdc, 0x56, 0x42, 0xc8,
|
||||
0xca, 0x40, 0x54, 0xde, 0x7c, 0xf6, 0xe2, 0x68, 0x2c, 0xa6, 0xb2, 0x38, 0x9a, 0x10, 0x04, 0x8e,
|
||||
0x92, 0x18, 0x0c, 0x86, 0x24, 0xae, 0xba, 0x30, 0x74, 0xfe, 0xea, 0x60, 0xc2, 0x48, 0x5c, 0xd6,
|
||||
0xd4, 0x5e, 0x4a, 0xc0, 0x62, 0xe8, 0xfc, 0x76, 0x32, 0xb8, 0xac, 0x26, 0x84, 0x0e, 0x1a, 0x90,
|
||||
0x1e, 0x94, 0x80, 0x0a, 0xa8, 0x22, 0x36, 0xbc, 0xf8, 0x72, 0x66, 0xec, 0x4e, 0xc4, 0xd0, 0x5a,
|
||||
0x58, 0xd2, 0xc6, 0x4c, 0xee, 0x64, 0x70, 0xfa, 0xbe, 0x34, 0x20, 0xaa, 0x08, 0x82, 0x96, 0x1c,
|
||||
0xae, 0x24, 0x30, 0xba, 0x18, 0x92, 0x86, 0x0c, 0x48, 0xc2, 0xd6, 0x5c, 0xfe, 0x74, 0x60, 0xea,
|
||||
0xe8, 0x62, 0x76, 0xfc, 0x5e, 0xd4, 0xc0, 0x4a, 0x0e, 0x84, 0x90, 0x1a, 0xb8, 0x32, 0x26, 0xac,
|
||||
0x22, 0xa8, 0xbc, 0x36, 0x94, 0x1e, 0x0a, 0x80, 0xc4, 0x4e, 0x5a, 0xd0, 0x72, 0xf8, 0xec, 0x66,
|
||||
0x64, 0xee, 0xfa, 0x70, 0xd2, 0x58, 0x4c, 0xc6, 0x82, 0x08, 0x1c, 0x96, 0x34, 0xbe, 0xaa, 0x20,
|
||||
0x3c, 0xb6, 0xa2, 0x28, 0x8a, 0x00, 0x14, 0x9e, 0xda, 0x50, 0x44, 0xce, 0x6c, 0xe6, 0xf2, 0x78,
|
||||
0x7a, 0xf0, 0xe4, 0x6e, 0xcc, 0x46, 0x52, 0xd8, 0x9c, 0x16, 0x02, 0x88, 0x2a, 0xa0, 0xb4, 0x3e,
|
||||
0xb0, 0x3a, 0x2e, 0xa4, 0x06, 0x8c, 0x98, 0x12, 0x56, 0xdc, 0xc8, 0x42, 0xe0, 0x6a, 0x7e, 0xf4,
|
||||
0xf6, 0x7c, 0x68, 0xe2, 0x40, 0xca, 0xde, 0x54, 0x10, 0x9a, 0x8e, 0x04, 0xa6, 0x2c, 0x38, 0xb2
|
||||
};
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Update the crc value with new data.
|
||||
*
|
||||
* \param crc The current crc value.
|
||||
* \param data Pointer to a buffer of \a data_len bytes.
|
||||
* \param data_len Number of bytes in the \a data buffer.
|
||||
* \return The updated crc value.
|
||||
*****************************************************************************/
|
||||
guint8 crc7update(guint8 crc, const unsigned char *data, int data_len)
|
||||
{
|
||||
unsigned int tbl_idx;
|
||||
|
||||
while (data_len--) {
|
||||
tbl_idx = ((crc >> 0) ^ *data) & 0xff;
|
||||
crc = (crc_table[tbl_idx] ^ (crc << (8 - 1))) & (0x7f << 1);
|
||||
|
||||
data++;
|
||||
}
|
||||
return crc & (0x7f << 1);
|
||||
}
|
||||
|
||||
|
||||
|
|
@ -0,0 +1,92 @@
|
|||
/*
|
||||
* crc7.h
|
||||
*
|
||||
* $Id$
|
||||
*
|
||||
* Functions and types for CRC checks.
|
||||
*
|
||||
* Wireshark - Network traffic analyzer
|
||||
* By Gerald Combs <gerald@wireshark.org>
|
||||
* Copyright 1998 Gerald Combs
|
||||
*
|
||||
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
|
||||
*
|
||||
* Generated on Wed Jul 11 17:24:57 2012,
|
||||
* by pycrc v0.7.10, http://www.tty1.net/pycrc/
|
||||
* using the configuration:
|
||||
* Width = 7
|
||||
* Poly = 0x45
|
||||
* XorIn = 0x00
|
||||
* ReflectIn = False
|
||||
* XorOut = 0x00
|
||||
* ReflectOut = False
|
||||
* Algorithm = table-driven
|
||||
****************************************************************************
|
||||
*/
|
||||
#ifndef __CRC7__H__
|
||||
#define __CRC7__H__
|
||||
|
||||
#include <stdlib.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#ifdef __cplusplus
|
||||
extern "C" {
|
||||
#endif
|
||||
|
||||
|
||||
/**
|
||||
* The definition of the used algorithm.
|
||||
*****************************************************************************/
|
||||
#define CRC_ALGO_TABLE_DRIVEN 1
|
||||
|
||||
/**
|
||||
* Calculate the initial crc value.
|
||||
*
|
||||
* \return The initial crc value.
|
||||
*****************************************************************************/
|
||||
static inline guint8 crc7init(void)
|
||||
{
|
||||
return 0x00 << 1;
|
||||
}
|
||||
|
||||
|
||||
/**
|
||||
* Update the crc value with new data.
|
||||
*
|
||||
* \param crc The current crc value.
|
||||
* \param data Pointer to a buffer of \a data_len bytes.
|
||||
* \param data_len Number of bytes in the \a data buffer.
|
||||
* \return The updated crc value.
|
||||
*****************************************************************************/
|
||||
extern guint8 crc7update(guint8 crc, const unsigned char *data, int data_len);
|
||||
|
||||
|
||||
/**
|
||||
* Calculate the final crc value.
|
||||
*
|
||||
* \param crc The current crc value.
|
||||
* \return The final crc value.
|
||||
*****************************************************************************/
|
||||
static inline guint8 crc7finalize(guint8 crc)
|
||||
{
|
||||
return (crc >> 1) ^ 0x00;
|
||||
}
|
||||
|
||||
|
||||
#ifdef __cplusplus
|
||||
} /* closing brace for extern "C" */
|
||||
#endif
|
||||
|
||||
#endif /* __CRC7__H__ */
|
|
@ -14,6 +14,9 @@ AirPDcapWepDecrypt
|
|||
; crc6.c
|
||||
update_crc6_by_bytes
|
||||
|
||||
; crc7.c
|
||||
crc7update
|
||||
|
||||
; crc10.c
|
||||
update_crc10_by_bytes
|
||||
|
||||
|
|
Loading…
Reference in New Issue