mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2024-09-21 07:46:12 +08:00
316 lines
7.5 KiB
C
316 lines
7.5 KiB
C
//-----------------------------------------------------------------------------
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// Copyright (C) 2010 iZsh <izsh at fail0verflow.com>
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//
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// This code is licensed to you under the terms of the GNU GPL, version 2 or,
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// at your option, any later version. See the LICENSE.txt file for the text of
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// the license.
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//-----------------------------------------------------------------------------
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// Low frequency HID commands
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//-----------------------------------------------------------------------------
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#include <stdio.h>
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#include <string.h>
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#include "proxmark3.h"
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#include "ui.h"
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#include "graph.h"
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#include "cmdparser.h"
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#include "cmdlfhid.h"
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#include "util.h"
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#include "cmdmain.h"
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static int CmdHelp(const char *Cmd);
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int usage_hid_wiegand(){
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PrintAndLog("Usage: lf hid wiegand [h] [formatlenght] [oem] [FacilityCode] [cardnumber]");
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PrintAndLog("This command converts FC/Cardnum to wiegand code");
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PrintAndLog("Options:");
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PrintAndLog(" h - This help");
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PrintAndLog(" formatlen - Format length, 26|34|35|37|44|84");
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PrintAndLog(" oem - Oem number");
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PrintAndLog(" facilitynum - Facility number");
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PrintAndLog(" cardnum - Card number");
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PrintAndLog("Examples:");
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PrintAndLog(" lf hid wiegand 26 0 304 2001");
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return 0;
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}
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/*
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int CmdHIDDemod(const char *Cmd)
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{
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if (GraphTraceLen < 4800) {
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PrintAndLog("too short; need at least 4800 samples");
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return 0;
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}
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GraphTraceLen = 4800;
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for (int i = 0; i < GraphTraceLen; ++i) {
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if (GraphBuffer[i] < 0) {
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GraphBuffer[i] = 0;
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} else {
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GraphBuffer[i] = 1;
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}
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}
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RepaintGraphWindow();
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return 0;
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}
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*/
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int CmdHIDDemodFSK(const char *Cmd)
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{
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int findone = ( Cmd[0] == '1' ) ? 1 : 0;
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UsbCommand c = {CMD_HID_DEMOD_FSK, {findone, 0 , 0}};
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdHIDSim(const char *Cmd)
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{
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unsigned int hi = 0, lo = 0;
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int n = 0, i = 0;
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi = (hi << 4) | (lo >> 28);
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lo = (lo << 4) | (n & 0xf);
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}
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PrintAndLog("Emulating tag with ID %x%16x", hi, lo);
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PrintAndLog("Press pm3-button to abort simulation");
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UsbCommand c = {CMD_HID_SIM_TAG, {hi, lo, 0}};
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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int CmdHIDClone(const char *Cmd)
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{
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unsigned int hi2 = 0, hi = 0, lo = 0;
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int n = 0, i = 0;
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UsbCommand c;
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if (strchr(Cmd,'l') != 0) {
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi2 = (hi2 << 4) | (hi >> 28);
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hi = (hi << 4) | (lo >> 28);
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lo = (lo << 4) | (n & 0xf);
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}
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PrintAndLog("Cloning tag with long ID %x%08x%08x", hi2, hi, lo);
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c.d.asBytes[0] = 1;
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} else {
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while (sscanf(&Cmd[i++], "%1x", &n ) == 1) {
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hi = (hi << 4) | (lo >> 28);
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lo = (lo << 4) | (n & 0xf);
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}
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PrintAndLog("Cloning tag with ID %x%08x", hi, lo);
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hi2 = 0;
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c.d.asBytes[0] = 0;
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}
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c.cmd = CMD_HID_CLONE_TAG;
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c.arg[0] = hi2;
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c.arg[1] = hi;
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c.arg[2] = lo;
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clearCommandBuffer();
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SendCommand(&c);
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return 0;
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}
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static void getParity26(uint32_t *hi, uint32_t *lo){
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uint32_t result = 0;
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int i;
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// even parity
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for (i = 24;i >= 13;i--)
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result ^= (*lo >> i) & 1;
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// even parity 26th bit
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*lo |= result << 25;
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// odd parity
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result = 0;
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for (i = 12;i >= 1;i--)
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result ^= (*lo >> i) & 1;
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*lo |= !result;
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}
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static void getParity34(uint32_t *hi, uint32_t *lo){
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uint32_t result = 0;
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int i;
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// even parity
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for (i = 7;i >= 0;i--)
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result ^= (*hi >> i) & i;
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for (i = 31;i >= 24;i--)
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result ^= (*lo >> i) & 1;
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*hi |= result << 2;
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// odd parity bit
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result = 0;
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for (i = 23;i >= 1;i--)
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result ^= (*lo >> i) & 1;
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*lo |= !result;
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}
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static void getParity35(uint32_t *hi, uint32_t *lo){
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*hi = *hi;
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}
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static void getParity37S(uint32_t *hi,uint32_t *lo){
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uint32_t result = 0;
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uint8_t i;
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// even parity
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for (i = 4; i >= 0; i--)
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result ^= (*hi >> i) & 1;
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for (i = 31; i >= 20; i--)
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result ^= (*lo >> i) & 1;
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*hi |= result;
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// odd parity
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result = 0;
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for (i = 19; i >= 1; i--)
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result ^= (*lo >> i) & 1;
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*lo |= result;
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}
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static void getParity37H(uint32_t *hi, uint32_t *lo){
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uint32_t result = 0;
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int i;
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// even parity
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for (i = 4;i >= 0;i--)
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result ^= (*hi >> i) & 1;
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for (i = 31;i >= 20;i--)
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result ^= (*lo >> i) & 1;
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*hi |= result << 4;
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// odd parity
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result = 0;
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for (i = 19;i >= 1;i--)
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result ^= (*lo >> i) & 1;
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*lo |= result;
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}
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static void calc26(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
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*lo = ((cardno & 0xFFFF) << 1) | ((fc & 0xFF) << 17) | (1 << 26);
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*hi = (1 << 5);
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}
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static void calc34(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
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// put card number first bit 1 .. 20 //
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*lo = ((cardno & 0X000F7FFF) << 1) | ((fc & 0XFFFF) << 17);
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// set bit format for less than 37 bit format
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*hi = (1 << 5) | (fc >> 15);
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}
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static void calc35(uint16_t fc, uint32_t cardno, uint32_t *hi, uint32_t *lo){
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*lo = ((cardno & 0xFFFFF) << 1) | fc << 21;
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*hi = (1 << 5) | ((fc >> 11) & 1);
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}
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static void calc37S(uint16_t sc, uint32_t cn, uint32_t *hi, uint32_t *lo){
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// SC 2 - 17 - 16 bit
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// CN 18 - 36 - 19 bit
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// Even P1 1 - 19
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// Odd P37 19 - 36
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sc = sc & 0xFFFF;
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*lo = ( (sc << 20) | (cn & 0x7FFFF) << 1);
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*hi = (sc >> 12);
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}
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static void calc37H(uint64_t cn, uint32_t *hi, uint32_t *lo){
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// SC NONE
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// CN 1-35 34 bits
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// Even Parity 0th bit 1-18
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// Odd Parity 36th bit 19-35
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cn = (cn & 0x00000003FFFFFFFF);
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*lo = (cn << 1);
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*hi = (cn >> 31);
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}
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static void calc40(uint64_t cn, uint32_t *hi, uint32_t *lo){
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cn = (cn & 0xFFFFFFFFFF);
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*lo = (uint32_t)((cn & 0xFFFFFFFF) << 1 );
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*hi = (uint32_t) (cn >> 31);
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}
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int CmdHIDWiegand(const char *Cmd)
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{
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uint32_t oem;
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uint32_t fmtlen = 0;
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uint32_t fc, lo = 0, hi = 0;
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uint64_t cn = 0;
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uint32_t cardnum = 0;
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//uint32_t temp, p
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uint8_t ctmp = param_getchar(Cmd, 0);
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if ( strlen(Cmd) < 0 || strlen(Cmd) < 4 || ctmp == 'H' || ctmp == 'h' ) return usage_hid_wiegand();
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fmtlen = param_get8(Cmd, 0);
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oem = param_get8(Cmd, 1);
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fc = param_get32ex(Cmd, 2, 0, 10);
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cn = param_get64ex(Cmd, 3, 0, 10);
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switch ( fmtlen ) {
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case 26 : {
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cardnum = (cn & 0xFFFFFFFF);
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calc26(fc, cardnum, &hi, &lo);
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getParity26(&hi, &lo);
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break;
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}
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case 34 : {
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cardnum = (cn & 0xFFFFFFFF);
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calc34(fc, cardnum, &hi, &lo);
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getParity34(&hi, &lo);
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break;
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}
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case 35 : {
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cardnum = (cn & 0xFFFFFFFF);
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calc35(fc, cardnum, &hi, &lo);
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getParity35(&hi, &lo);
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break;
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}
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case 37 : {
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cardnum = (cn & 0xFFFFFFFF);
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calc37S(fc, cardnum, &hi, &lo);
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getParity37S(&hi, &lo);
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break;
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}
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case 38 : {
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cardnum = (cn & 0xFFFFFFFF);
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calc37H(cardnum, &hi, &lo);
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getParity37H(&hi, &lo);
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break;
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}
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case 40 : {
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calc40(cn, &hi, &lo);
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PrintAndLog("%x %x", hi, lo);
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break;
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}
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case 44 : { break; }
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case 84 : { break; }
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}
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PrintAndLog("HID %d bit | FC: %d CN: %d | Wiegand Code: %08X%08X", fmtlen, fc, cn, hi, lo);
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return 0;
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}
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static command_t CommandTable[] = {
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{"help", CmdHelp, 1, "This help"},
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//{"demod", CmdHIDDemod, 1, "Demodulate HID Prox Card II (not optimal)"},
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{"fskdemod", CmdHIDDemodFSK, 0, "['1'] Realtime HID FSK demodulator (option '1' for one tag only)"},
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{"sim", CmdHIDSim, 0, "<ID> -- HID tag simulator"},
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{"clone", CmdHIDClone, 0, "<ID> ['l'] -- Clone HID to T55x7 (tag must be in antenna)(option 'l' for 84bit ID)"},
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{"wiegand", CmdHIDWiegand, 1, "<oem> <fmtlen> <fc> <cardnum> -- convert facilitycode, cardnumber to Wiegand code"},
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{NULL, NULL, 0, NULL}
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};
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int CmdLFHID(const char *Cmd) {
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CmdsParse(CommandTable, Cmd);
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return 0;
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}
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int CmdHelp(const char *Cmd) {
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CmdsHelp(CommandTable);
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return 0;
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}
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