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("Usage: lf guard clone <format> <Facility-Code> <Card-Number>");
PrintAndLog("Options :");
+ PrintAndLog(" <format> : format length 26|32|36|40");
PrintAndLog(" <Facility-Code> : 8-bit value facility code");
PrintAndLog(" <Card Number> : 16-bit value card number");
PrintAndLog("");
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("Usage: lf guard sim <format> <Card-Number>");
PrintAndLog("Options :");
+ PrintAndLog(" <format> : format length 26|32|36|40");
PrintAndLog(" <Facility-Code> : 8-bit value facility code");
PrintAndLog(" <Card Number> : 16-bit value card number");
PrintAndLog("");
}
// Works for 26bits.
-int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) {
+int GetGuardBits(uint8_t fmtlen, uint32_t fc, uint32_t cn, uint8_t *guardBits) {
- // Intializes random number generator
- time_t t;
- srand((unsigned) time(&t));
- //uint8_t xorKey = rand() % 0xFF;
uint8_t xorKey = 0x66;
uint8_t i;
uint8_t pre[96];
+ uint8_t rawbytes[12];
memset(pre, 0x00, sizeof(pre));
+ memset(rawbytes, 0x00, sizeof(rawbytes));
- // 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, wiegand, 24);
-
- // lets start. 12bytes of data to be produced.
- uint8_t rawbytes[12];
- memset(rawbytes, 0x00, sizeof(rawbytes));
+ // add format length (decimal)
+ switch (fmtlen) {
+ case 32: {
+ rawbytes[1] = (32 << 2);
+
+ break;
+ }
+ case 36: {
+ // FC = ((ByteStream[3] & 0x7F)<<7) | (ByteStream[4]>>1);
+ // Card = ((ByteStream[4]&1)<<19) | (ByteStream[5]<<11) | (ByteStream[6]<<3) | (ByteStream[7]>>5);
+ rawbytes[1] = (36 << 2);
+ // Get 26 wiegand from FacilityCode, CardNumber
+ uint8_t wiegand[34];
+ memset(wiegand, 0x00, sizeof(wiegand));
+ num_to_bytebits(fc, 8, wiegand);
+ num_to_bytebits(cn, 26, wiegand+8);
+
+ // add wiegand parity bits (dest, source, len)
+ wiegand_add_parity(pre, wiegand, 34);
+ break;
+ }
+ case 40: {
+ rawbytes[1] = (40 << 2);
+ break;
+ }
+ case 26:
+ default: {
+ rawbytes[1] = (26 << 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, wiegand, 24);
+ break;
+ }
+ }
+ // 2bit checksum, unknown today,
+ // these two bits are the last ones of rawbyte[1], hence the LSHIFT above.
+
// xor key
rawbytes[0] = xorKey;
-
- // add format length (decimal)
- // len | hex | bin
- // 26 | 1A | 0001 1010
- rawbytes[1] = (26 << 2);
- // 36 | 24 | 0010 0100
- //rawbytes[1] = (36 << 2);
- // 40 | 28 | 0010 1000
- //rawbytes[1] = (40 << 2);
- // 2bit checksum, unknown today,
- // these two bits are the last ones of rawbyte[1], hence the LSHIFT above.
rawbytes[2] = 1;
rawbytes[3] = 0;
if (g_debugMode) printf(" WIE | %s\n", sprint_hex(rawbytes, sizeof(rawbytes)));
+
// XOR (only works on wiegand stuff)
for (i = 1; i < 12; ++i)
rawbytes[i] ^= xorKey ;
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;
+ uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0, fmtlen = 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};
+ 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')
- //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
-// blocks[0] = T5555_MODULATION_FSK2 | 50<<T5555_BITRATE_SHIFT | 4<<T5555_MAXBLOCK_SHIFT;
+ if (param_getchar(Cmd, 3) == 'Q' || param_getchar(Cmd, 3) == 'q')
+ //t5555 (Q5) BITRATE = (RF-2)/2 (iceman)
+ blocks[0] = T5555_MODULATION_FSK2 | ((50-2)>>1) << T5555_BITRATE_SHIFT | 3 << T5555_MAXBLOCK_SHIFT;
- if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_clone();
+ if (sscanf(Cmd, "%u %u %u", &fmtlen, &fc, &cn ) != 2) return usage_lf_guard_clone();
+ fmtlen &= 0x7f;
facilitycode = (fc & 0x000000FF);
cardnumber = (cn & 0x0000FFFF);
- if ( !GetGuardBits(facilitycode, cardnumber, bs)) {
+ if ( !GetGuardBits(fmtlen, facilitycode, cardnumber, bs)) {
PrintAndLog("Error with tag bitstream generation.");
return 1;
}
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;
+ uint32_t facilitycode = 0, cardnumber = 0, fc = 0, cn = 0, fmtlen = 0;
uint8_t clock = 64, encoding = 2, separator = 0, invert = 0;
uint8_t bs[96];
memset(bs, 0x00, sizeof(bs));
- if (sscanf(Cmd, "%u %u", &fc, &cn ) != 2) return usage_lf_guard_sim();
+ if (sscanf(Cmd, "%u %u %u", &fmtlen, &fc, &cn ) != 2) return usage_lf_guard_sim();
+ fmtlen &= 0x7F;
facilitycode = (fc & 0x000000FF);
cardnumber = (cn & 0x0000FFFF);
- if ( !GetGuardBits(facilitycode, cardnumber, bs)) {
+ if ( !GetGuardBits(fmtlen, facilitycode, cardnumber, bs)) {
PrintAndLog("Error with tag bitstream generation.");
return 1;
}
projects / proxmark3-svn / blobdiff