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Inital test for the "lf em4x 410xsim / lf em4x 410xwatch" which I try to verify that the sim works.

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Something about speed,  the clock detection is not so good.  should be 64,  usually 67..
This commit is contained in:
iceman1001 2014-10-27 19:46:21 +01:00
parent 1010aacca0
commit 2ae8a312e0
16 changed files with 379 additions and 39 deletions
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1
armsrc/appmain.c
View file

@ -949,7 +949,6 @@ void UsbPacketReceived(uint8_t *packet, int len)
case CMD_DOWNLOADED_SIM_SAMPLES_125K: {
uint8_t *b = (uint8_t *)BigBuf;
memcpy(b+c->arg[0], c->d.asBytes, 48);
//Dbprintf("copied 48 bytes to %i",b+c->arg[0]);
cmd_send(CMD_ACK,0,0,0,0,0);
break;
}

14
armsrc/lfops.c
View file

@ -450,13 +450,17 @@ void WriteTItag(uint32_t idhi, uint32_t idlo, uint16_t crc)
void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
{
int i;
uint8_t *tab = (uint8_t *)BigBuf;
uint8_t *buff = (uint8_t *)BigBuf;
FpgaDownloadAndGo(FPGA_BITSTREAM_LF);
FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz
FpgaWriteConfWord(FPGA_MAJOR_MODE_LF_EDGE_DETECT);
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;
SetAdcMuxFor(GPIO_MUXSEL_LOPKD);
// Give it a bit of time for the resonant antenna to settle.
SpinDelay(150);
AT91C_BASE_PIOA->PIO_PER = GPIO_SSC_DOUT | GPIO_SSC_CLK;
AT91C_BASE_PIOA->PIO_OER = GPIO_SSC_DOUT;
AT91C_BASE_PIOA->PIO_ODR = GPIO_SSC_CLK;
@ -476,7 +480,7 @@ void SimulateTagLowFrequency(int period, int gap, int ledcontrol)
if (ledcontrol)
LED_D_ON();
if(tab[i])
if(buff[i])
OPEN_COIL();
else
SHORT_COIL();

34
client/cmdlfem4x.c
View file

@ -1,4 +1,4 @@
//-----------------------------------------------------------------------------
//-----------------------------------------------------------------------------
// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
//
// This code is licensed to you under the terms of the GNU GPL, version 2 or,
@ -195,9 +195,27 @@ retest:
* 0 <-- stop bit, end of tag
*/
int CmdEM410xSim(const char *Cmd)
{
int i, n, j, h, binary[4], parity[4];
{
int i, n, j, h, binary[4], parity[4];
char cmdp = param_getchar(Cmd, 0);
uint8_t uid[5] = {0x00};
if (cmdp == 'h' || cmdp == 'H') {
PrintAndLog("Usage: lf em4x sim <UID>");
PrintAndLog("");
PrintAndLog(" sample: lf em4x sim 0F0368568B");
return 0;
}
if (param_gethex(Cmd, 0, uid, 10)) {
PrintAndLog("UID must include 10 HEX symbols");
return 0;
}
PrintAndLog("Starting simulating with UID %02X %02X %02X %02X %02X", uid[0],uid[1],uid[2],uid[3],uid[4]);
/* clock is 64 in EM410x tags */
int clock = 64;
@ -271,10 +289,16 @@ int CmdEM410xWatch(const char *Cmd)
int read_h = (*Cmd == 'h');
do
{
if (ukbhit()) {
printf("\naborted via keyboard!\n");
break;
}
CmdLFRead(read_h ? "h" : "");
CmdSamples("16000");
CmdSamples("16000");
} while (
!CmdEM410xRead("")
!CmdEM410xRead("64")
);
return 0;
}

4
client/cmdlft55xx.c
View file

@ -316,8 +316,8 @@ int CmdDump(const char *Cmd){
}
if ( hasPwd ){
if (param_gethex(Cmd, 0, pwd, 4)) {
PrintAndLog("password must include 4 HEX symbols");
if (param_gethex(Cmd, 0, pwd, 8)) {
PrintAndLog("password must include 8 HEX symbols");
return 0;
}
}

4
client/graph.c
View file

@ -36,8 +36,10 @@ void AppendGraph(int redraw, int clock, int bit)
int ClearGraph(int redraw)
{
int gtl = GraphTraceLen;
GraphTraceLen = 0;
memset(GraphBuffer, 0x00, GraphTraceLen);
GraphTraceLen = 0;
if (redraw)
RepaintGraphWindow();

20
client/loclass/cipher.c
View file

@ -1,5 +1,17 @@
/*****************************************************************************
* This file is part of iClassCipher. It is a reconstructon of the cipher engine
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
@ -18,9 +30,13 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with IClassCipher. If not, see <http://www.gnu.org/licenses/>.
* along with loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#include "cipher.h"
#include "cipherutils.h"
#include <stdio.h>

20
client/loclass/cipher.h
View file

@ -1,5 +1,17 @@
/*****************************************************************************
* This file is part of iClassCipher. It is a reconstructon of the cipher engine
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
@ -18,9 +30,13 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with IClassCipher. If not, see <http://www.gnu.org/licenses/>.
* along with loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#ifndef CIPHER_H
#define CIPHER_H
#include <stdint.h>

19
client/loclass/cipherutils.c
View file

@ -1,5 +1,17 @@
/*****************************************************************************
* This file is part of iClassCipher. It is a reconstructon of the cipher engine
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
@ -18,7 +30,10 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with IClassCipher. If not, see <http://www.gnu.org/licenses/>.
* along with loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#include <stdint.h>

20
client/loclass/cipherutils.h
View file

@ -1,5 +1,17 @@
/*****************************************************************************
* This file is part of iClassCipher. It is a reconstructon of the cipher engine
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
@ -18,9 +30,13 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with IClassCipher. If not, see <http://www.gnu.org/licenses/>.
* along with loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#ifndef CIPHERUTILS_H
#define CIPHERUTILS_H
#include <stdint.h>

46
client/loclass/elite_crack.c
View file

@ -1,3 +1,41 @@
/*****************************************************************************
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This file 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 loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#include <stdint.h>
#include <stdbool.h>
#include <string.h>
@ -526,13 +564,9 @@ int bruteforceFile(const char *filename, uint16_t keytable[])
fseek(f, 0, SEEK_SET);
uint8_t *dump = malloc(fsize);
size_t bytes_read = fread(dump, fsize, 1, f);
fread(dump, fsize, 1, f);
fclose(f);
if (bytes_read < fsize)
{
prnlog("Error, could only read %d bytes (should be %d)",bytes_read, fsize );
}
return bruteforceDump(dump,fsize,keytable);
}
/**

39
client/loclass/elite_crack.h
View file

@ -1,3 +1,42 @@
/*****************************************************************************
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This file 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 loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#ifndef ELITE_CRACK_H
#define ELITE_CRACK_H
void permutekey(uint8_t key[8], uint8_t dest[8]);

49
client/loclass/fileutils.c
View file

@ -1,3 +1,41 @@
/*****************************************************************************
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This file 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 loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
@ -45,6 +83,17 @@ int saveFile(const char *preferredName, const char *suffix, const void* data, si
return 0;
}
int loadFile(const char *fileName, void* data, size_t datalen)
{
FILE *filehandle = fopen(fileName, "rb");
if(!filehandle) {
prnlog("Failed to read from file '%s'", fileName);
return 1;
}
fread(data,datalen,1,filehandle);
fclose(filehandle);
return 0;
}
/**
* Utility function to print to console. This is used consistently within the library instead
* of printf, but it actually only calls printf (and adds a linebreak).

49
client/loclass/fileutils.h
View file

@ -1,3 +1,41 @@
/*****************************************************************************
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This file 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 loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#ifndef FILEUTILS_H
#define FILEUTILS_H
/**
@ -11,13 +49,22 @@
* @return 0 for ok, 1 for failz
*/
int saveFile(const char *preferredName, const char *suffix, const void* data, size_t datalen);
/**
* @brief Utility function to save load binary data from a a file. This method takes a filename,
* Should only be used for fixed-size binary files
* @param fileName the name of the file
* @param data a buffer to place data in
* @param datalen the length of the data/data.
* @return
*/
int loadFile(const char *fileName, void* data, size_t datalen);
/**
* Utility function to print to console. This is used consistently within the library instead
* of printf, but it actually only calls printf. The reason to have this method is to
*make it simple to plug this library into proxmark, which has this function already to
* write also to a logfile. When doing so, just point this function to use PrintAndLog
* write also to a logfile. When doing so, just delete this function.
* @param fmt
*/
void prnlog(char *fmt, ...);

26
client/loclass/ikeys.c
View file

@ -1,15 +1,23 @@
/*****************************************************************************
* This file is part of iClassCipher. It is a reconstructon of the cipher engine
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* This is a reference implementation of iclass key diversification. I'm sure it can be
* optimized heavily. It is written for ease of understanding and correctness, please take it
* and tweak it and make a super fast version instead, using this for testing and verification.
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
@ -22,8 +30,12 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with IClassCipher. If not, see <http://www.gnu.org/licenses/>.
* along with loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
/**
@ -391,7 +403,7 @@ void diversifyKey(uint8_t csn[8], uint8_t key[8], uint8_t div_key[8])
//Calculate HASH0(DES))
uint64_t crypt_csn = x_bytes_to_num(crypted_csn, 8);
//uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
uint64_t crypted_csn_swapped = swapZvalues(crypt_csn);
hash0(crypt_csn,div_key);
}

38
client/loclass/ikeys.h
View file

@ -1,3 +1,41 @@
/*****************************************************************************
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
* Flavio D. Garcia, Gerhard de Koning Gans, Roel Verdult and
* Milosch Meriac in the paper "Dismantling IClass".
*
* Copyright (C) 2014 Martin Holst Swende
*
* This is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as published
* by the Free Software Foundation.
*
* This file 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 loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#ifndef IKEYS_H
#define IKEYS_H

35
client/loclass/main.c
View file

@ -1,5 +1,17 @@
/*****************************************************************************
* This file is part of iClassCipher. It is a reconstructon of the cipher engine
* WARNING
*
* THIS CODE IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY.
*
* USAGE OF THIS CODE IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL
* PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL,
* AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES.
*
* THIS CODE SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS.
*
*****************************************************************************
*
* This file is part of loclass. It is a reconstructon of the cipher engine
* used in iClass, and RFID techology.
*
* The implementation is based on the work performed by
@ -18,9 +30,13 @@
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with IClassCipher. If not, see <http://www.gnu.org/licenses/>.
* along with loclass. If not, see <http://www.gnu.org/licenses/>.
*
*
*
****************************************************************************/
#include <stdio.h>
#include <cipherutils.h>
#include <stdint.h>
@ -62,9 +78,22 @@ int showHelp()
int main (int argc, char **argv)
{
prnlog("IClass Cipher version 1.2, Copyright (C) 2014 Martin Holst Swende\n");
prnlog("Comes with ABSOLUTELY NO WARRANTY");
prnlog("This is free software, and you are welcome to use, abuse and repackage, please keep the credits\n");
prnlog("Released as GPLv2\n");
prnlog("WARNING");
prnlog("");
prnlog("THIS TOOL IS CREATED FOR EXPERIMENTATION AND EDUCATIONAL USE ONLY. ");
prnlog("");
prnlog("USAGE OF THIS TOOL IN OTHER WAYS MAY INFRINGE UPON THE INTELLECTUAL ");
prnlog("PROPERTY OF OTHER PARTIES, SUCH AS INSIDE SECURE AND HID GLOBAL, ");
prnlog("AND MAY EXPOSE YOU TO AN INFRINGEMENT ACTION FROM THOSE PARTIES. ");
prnlog("");
prnlog("THIS TOOL SHOULD NEVER BE USED TO INFRINGE PATENTS OR INTELLECTUAL PROPERTY RIGHTS. ");
char *fileName = NULL;
int c;
while ((c = getopt (argc, argv, "thf:")) != -1)