--- /dev/null
+//-----------------------------------------------------------------------------
+//
+// This code is licensed to you under the terms of the GNU GPL, version 2 or,
+// at your option, any later version. See the LICENSE.txt file for the text of
+// the license.
+//-----------------------------------------------------------------------------
+// Low frequency Farpoint / Pyramid tag commands
+//-----------------------------------------------------------------------------
+#include <string.h>
+#include <inttypes.h>
+#include "cmdlfguard.h"
+static int CmdHelp(const char *Cmd);
+
+int usage_lf_guard_clone(void){
+ PrintAndLog("clone a Guardall tag to a T55x7 tag.");
+ PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated. ");
+ PrintAndLog("Currently work only on 26bit");
+ PrintAndLog("");
+ PrintAndLog("Usage: lf guard clone <Facility-Code> <Card-Number>");
+ PrintAndLog("Options :");
+ PrintAndLog(" <Facility-Code> : 8-bit value facility code");
+ PrintAndLog(" <Card Number> : 16-bit value card number");
+ PrintAndLog("");
+ PrintAndLog("Sample : lf guard clone 123 11223");
+ return 0;
+}
+
+int usage_lf_guard_sim(void) {
+ PrintAndLog("Enables simulation of Guardall card with specified card number.");
+ PrintAndLog("Simulation runs until the button is pressed or another USB command is issued.");
+ PrintAndLog("The facility-code is 8-bit and the card number is 16-bit. Larger values are truncated.");
+ PrintAndLog("Currently work only on 26bit");
+ PrintAndLog("");
+ PrintAndLog("Usage: lf guard sim <Card-Number>");
+ PrintAndLog("Options :");
+ PrintAndLog(" <Facility-Code> : 8-bit value facility code");
+ PrintAndLog(" <Card Number> : 16-bit value card number");
+ PrintAndLog("");
+ PrintAndLog("Sample : lf guard sim 123 11223");
+ return 0;
+}
+
+
+// Works for 26bits.
+int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) {
+
+ // Intializes random number generator
+ time_t t;
+ srand((unsigned) time(&t));
+
+ uint8_t pre[96];
+ memset(pre, 0x00, sizeof(pre));
+
+ uint8_t index = 8;
+
+ // preamble 6bits
+ pre[0] = 1;
+ pre[1] = 1;
+ pre[2] = 1;
+ pre[3] = 1;
+ pre[4] = 1;
+ //pre[5] = 0;
+
+ // add xor key
+ uint8_t xorKey = rand() % 0xFF;
+ num_to_bytebits(xorKey, 8, pre+index);
+ index += 8;
+
+ // add format length
+ // len | hex | bin wiegand pos fc/cn
+ // 26 | 1A | 0001 1010
+ num_to_bytebits(26, 8, pre+index);
+ // 36 | 24 | 0010 0100
+ //num_to_bytebits(36, 8, pre+index);
+ // 40 | 28 | 0010 1000
+ //num_to_bytebits(40, 8, pre+index);
+
+ index += 8;
+
+ // 2bit checksum
+ // unknown today.
+ index += 2;
+
+ // Get 26 wiegand from FacilityCode, CardNumber
+ uint8_t wiegand[24];
+ memset(wiegand, 0x00, sizeof(wiegand));
+ num_to_bytebits(fc, 8, wiegand);
+ num_to_bytebits(cn, 16, wiegand+8);
+
+ // add wiegand parity bits (dest, source, len)
+ wiegand_add_parity(pre+index, wiegand, 24);
+
+ uint8_t tmp = 0, i = 0;
+ for (i = 2; i < 12; ++i) {
+ // // xor all bytes
+ // tmp = xorKey ^ bytebits_to_byte(pre + (i*8), 8);
+
+ // // copy to out..
+ // num_to_bytebits(tmp, 8, pre + (i*8) );
+ }
+
+ // add spacer bit 0 every 5
+
+ // swap nibbles
+
+
+ // copy to outarray
+ memcpy(guardBits, pre, sizeof(pre));
+
+ printf(" | %s\n", sprint_bin(guardBits, 96) );
+ return 1;
+}
+
+int CmdGuardRead(const char *Cmd) {
+ CmdLFRead("s");
+ getSamples("30000",false);
+ return CmdG_Prox_II_Demod("");
+}
+
+int CmdGuardClone(const char *Cmd) {
+
+ char cmdp = param_getchar(Cmd, 0);
+ if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_guard_clone();
+
+ uint32_t facilitycode=0, cardnumber=0, fc = 0, cn = 0;
+ uint8_t i;
+ uint8_t bs[96];
+ memset(bs, 0x00, sizeof(bs));
+
+ //GuardProxII - compat mode, ASK/Biphase, data rate 64, 3 data blocks
+ uint32_t blocks[5] = {T55x7_MODULATION_BIPHASE | T55x7_BITRATE_RF_64 | 3<<T55x7_MAXBLOCK_SHIFT, 0, 0, 0, 0};
+
+// if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
+// blocks[0] = T5555_MODULATION_FSK2 | 50<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT;
+
+ if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_clone();
+
+ facilitycode = (fc & 0x000000FF);
+ cardnumber = (cn & 0x0000FFFF);
+
+ if ( !GetGuardBits(facilitycode, cardnumber, bs)) {
+ PrintAndLog("Error with tag bitstream generation.");
+ return 1;
+ }
+
+ blocks[1] = bytebits_to_byte(bs,32);
+ blocks[2] = bytebits_to_byte(bs+32,32);
+ blocks[3] = bytebits_to_byte(bs+64,32);
+
+ PrintAndLog("Preparing to clone Guardall to T55x7 with Facility Code: %u, Card Number: %u", facilitycode, cardnumber);
+ PrintAndLog("Blk | Data ");
+ PrintAndLog("----+------------");
+ for ( i = 0; i<4; ++i )
+ PrintAndLog(" %02d | %08x", i, blocks[i]);
+
+ // UsbCommand resp;
+ // UsbCommand c = {CMD_T55XX_WRITE_BLOCK, {0,0,0}};
+
+ // for ( i = 0; i<5; ++i ) {
+ // c.arg[0] = blocks[i];
+ // c.arg[1] = i;
+ // clearCommandBuffer();
+ // SendCommand(&c);
+ // if (!WaitForResponseTimeout(CMD_ACK, &resp, 1000)){
+ // PrintAndLog("Error occurred, device did not respond during write operation.");
+ // return -1;
+ // }
+ // }
+ return 0;
+}
+
+int CmdGuardSim(const char *Cmd) {
+
+ char cmdp = param_getchar(Cmd, 0);
+ if (strlen(Cmd) == 0 || cmdp == 'h' || cmdp == 'H') return usage_lf_guard_sim();
+
+ uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0;
+
+ uint8_t bs[96];
+ size_t size = sizeof(bs);
+ memset(bs, 0x00, size);
+
+ // Pyramid uses: ASK Biphase, clk: 32, invert: 0
+ uint64_t arg1, arg2;
+ arg1 = (10 << 8) + 8;
+ arg2 = 32 | 0;
+
+ if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_sim();
+
+ facilitycode = (fc & 0x000000FF);
+ cardnumber = (cn & 0x0000FFFF);
+
+ if ( !GetGuardBits(facilitycode, cardnumber, bs)) {
+ PrintAndLog("Error with tag bitstream generation.");
+ return 1;
+ }
+
+ PrintAndLog("Simulating Guardall - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber );
+
+ UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+ memcpy(c.d.asBytes, bs, size);
+ clearCommandBuffer();
+ SendCommand(&c);
+ return 0;
+}
+
+static command_t CommandTable[] = {
+ {"help", CmdHelp, 1, "This help"},
+ {"read", CmdGuardRead, 0, "Attempt to read and extract tag data"},
+ {"clone", CmdGuardClone, 0, "<Facility-Code> <Card Number> clone Guardall tag"},
+ {"sim", CmdGuardSim, 0, "<Facility-Code> <Card Number> simulate Guardall tag"},
+ {NULL, NULL, 0, NULL}
+};
+
+int CmdLFGuard(const char *Cmd) {
+ clearCommandBuffer();
+ CmdsParse(CommandTable, Cmd);
+ return 0;
+}
+
+int CmdHelp(const char *Cmd) {
+ CmdsHelp(CommandTable);
+ return 0;
+}
projects / proxmark3-svn / commitdiff