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ADD: finished of the "LF GUARD SIM" command. needs testing.

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iceman1001 2016-02-28 23:28:38 +01:00
commit 07291f87d8
2 changed files with 102 additions and 106 deletions
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38
client/cmdlfguard.c
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@ -91,12 +91,6 @@ int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) {
if (g_debugMode) printf(" WIE | %s\n", sprint_hex(rawbytes, sizeof(rawbytes)));
// NIBBLE_SWAP (works on all data)
// for (i = 0; i < 12; ++i)
// rawbytes[i] = SWAP_NIBBLE( rawbytes[i] );
// printf("SWAP | %s\n", sprint_hex(rawbytes, sizeof(rawbytes)));
// XOR (only works on wiegand stuff)
for (i = 1; i < 12; ++i)
rawbytes[i] ^= xorKey ;
@ -111,7 +105,7 @@ int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) {
if (g_debugMode) printf(" Raw | %s\n", sprint_bin(pre, 64) );
// add spacer bit 0 every 4 bits, starting with index 0,
// 12 bytes, 24 nibbles. 24+1 extra bites. 3bytes. Ie 9bytes | 1byte xorkey, 8bytes rawdata (64bits, should be enough for a 40bit wiegand)
// 12 bytes, 24 nibbles. 24+1 extra bites. 3bytes. ie 9bytes | 1byte xorkey, 8bytes rawdata (64bits, should be enough for a 40bit wiegand)
addParity(pre, guardBits+6, 64, 5, 3);
// preamble
@ -121,10 +115,6 @@ int GetGuardBits(uint32_t fc, uint32_t cn, uint8_t *guardBits) {
guardBits[3] = 1;
guardBits[4] = 1;
guardBits[5] = 0;
/* 6 B
PRE | 0110 1101 0101 1110 0001 1101 1101 0111 1101011011010110110101101101011
FIN | 111110 0 0110 0 1101 0 0101 0 1110 0 0001 0 1101 0 1101 0 0111 0 110100110011010011001101001100110100110000000000
*/
if (g_debugMode) printf(" FIN | %s\n", sprint_bin(guardBits, 96) );
return 1;
@ -194,16 +184,11 @@ int CmdGuardSim(const char *Cmd) {
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 clock = 64, encoding = 2, separator = 0, invert = 0;
uint8_t bs[96];
size_t size = sizeof(bs);
memset(bs, 0x00, size);
memset(bs, 0x00, sizeof(bs));
// 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);
@ -215,9 +200,20 @@ int CmdGuardSim(const char *Cmd) {
}
PrintAndLog("Simulating Guardall - Facility Code: %u, CardNumber: %u", facilitycode, cardnumber );
// Guard uses: clk: 64, invert: 0, encoding: 2 (ASK Biphase)
uint64_t arg1, arg2;
arg1 = (clock << 8) | encoding;
arg2 = (invert << 8) | separator;
uint8_t rawbytes[12];
size_t size = sizeof(rawbytes);
for (uint8_t i=0; i < size; ++i){
rawbytes[i] = bytebits_to_byte( bs + (i*8), 8);
}
UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
memcpy(c.d.asBytes, bs, size);
memcpy(c.d.asBytes, rawbytes, size );
clearCommandBuffer();
SendCommand(&c);
return 0;
@ -227,7 +223,7 @@ 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"},
{"sim", CmdGuardSim, 0, "<Facility-Code> <Card Number> simulate Guardall tag"},
{NULL, NULL, 0, NULL}
};