//by marshmellow
//biphase decode
//take 01 or 10 = 0 and 11 or 00 = 1
-//takes 1 argument "offset" default = 0 if 1 it will shift the decode by one bit
+//takes 2 arguments "offset" default = 0 if 1 it will shift the decode by one bit
+// and "invert" default = 0 if 1 it will invert output
// since it is not like manchester and doesn't have an incorrect bit pattern we
// cannot determine if our decode is correct or if it should be shifted by one bit
// the argument offset allows us to manually shift if the output is incorrect
int errCnt=0;
size_t size=0;
int offset=0;
+ int invert=0;
int high=0, low=0;
- sscanf(Cmd, "%i", &offset);
+ sscanf(Cmd, "%i %i", &offset, &invert);
uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
//get graphbuffer & high and low
for (;i<DemodBufferLen;++i){
return 0;
}
size=i;
- errCnt=BiphaseRawDecode(BitStream, &size, offset);
+ errCnt=BiphaseRawDecode(BitStream, &size, offset, invert);
if (errCnt>=20){
PrintAndLog("Too many errors attempting to decode: %d",errCnt);
return 0;
DemodBufferLen=64;
return 1;
}
+
+
+//by marshmellow
+//AWID Prox demod - FSK RF/50 with preamble of 00000001 (always a 96 bit data stream)
+//print full AWID Prox ID and some bit format details if found
+int CmdFSKdemodAWID(const char *Cmd)
+{
+
+ int verbose=1;
+ sscanf(Cmd, "%i", &verbose);
+
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
+
+ //get binary from fsk wave
+ int idx = AWIDdemodFSK(BitStream, size);
+ if (idx<=0){
+ if (verbose){
+ if (idx == -1)
+ PrintAndLog("Error: not enough samples");
+ else if (idx == -2)
+ PrintAndLog("Error: only noise found - no waves");
+ else if (idx == -3)
+ PrintAndLog("Error: problem during FSK demod");
+ // else if (idx == -3)
+ // PrintAndLog("Error: thought we had a tag but the parity failed");
+ else if (idx == -4)
+ PrintAndLog("Error: AWID preamble not found");
+ }
+ return 0;
+ }
+
+ // Index map
+ // 0 10 20 30 40 50 60
+ // | | | | | | |
+ // 01234567 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 456 7 890 1 234 5 678 9 012 3 - to 96
+ // -----------------------------------------------------------------------------
+ // 00000001 000 1 110 1 101 1 011 1 101 1 010 0 000 1 000 1 010 0 001 0 110 1 100 0 000 1 000 1
+ // premable bbb o bbb o bbw o fff o fff o ffc o ccc o ccc o ccc o ccc o ccc o wxx o xxx o xxx o - to 96
+ // |---26 bit---| |-----117----||-------------142-------------|
+ // b = format bit len, o = odd parity of last 3 bits
+ // f = facility code, c = card number
+ // w = wiegand parity
+ // (26 bit format shown)
+
+ //get raw ID before removing parities
+ uint32_t rawLo = bytebits_to_byte(BitStream+idx+64,32);
+ uint32_t rawHi = bytebits_to_byte(BitStream+idx+32,32);
+ uint32_t rawHi2 = bytebits_to_byte(BitStream+idx,32);
+ size = removeParity(BitStream, idx+8, 4, 1, 88);
+ if (size != 66){
+ if (verbose) PrintAndLog("Error: at parity check-tag size does not match AWID format");
+ return 0;
+ }
+ // ok valid card found!
+
+ // Index map
+ // 0 10 20 30 40 50 60
+ // | | | | | | |
+ // 01234567 8 90123456 7890123456789012 3 456789012345678901234567890123456
+ // -----------------------------------------------------------------------------
+ // 00011010 1 01110101 0000000010001110 1 000000000000000000000000000000000
+ // bbbbbbbb w ffffffff cccccccccccccccc w xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+ // |26 bit| |-117--| |-----142------|
+ // b = format bit len, o = odd parity of last 3 bits
+ // f = facility code, c = card number
+ // w = wiegand parity
+ // (26 bit format shown)
+
+ uint32_t fc = 0;
+ uint32_t cardnum = 0;
+ uint32_t code1 = 0;
+ uint32_t code2 = 0;
+ uint8_t fmtLen = bytebits_to_byte(BitStream,8);
+ if (fmtLen==26){
+ fc = bytebits_to_byte(BitStream+9, 8);
+ cardnum = bytebits_to_byte(BitStream+17, 16);
+ code1 = bytebits_to_byte(BitStream+8,fmtLen);
+ PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x", fmtLen, fc, cardnum, code1, rawHi2, rawHi, rawLo);
+ } else {
+ cardnum = bytebits_to_byte(BitStream+8+(fmtLen-17), 16);
+ if (fmtLen>32){
+ code1 = bytebits_to_byte(BitStream+8,fmtLen-32);
+ code2 = bytebits_to_byte(BitStream+8+(fmtLen-32),32);
+ PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x%08x, Raw: %x%08x%08x", fmtLen, cardnum, code1, code2, rawHi2, rawHi, rawLo);
+ } else{
+ code1 = bytebits_to_byte(BitStream+8,fmtLen);
+ PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d) - Wiegand: %x, Raw: %x%08x%08x", fmtLen, cardnum, code1, rawHi2, rawHi, rawLo);
+ }
+ }
+
+ //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
+
+ return 1;
+}
+
+//by marshmellow
+//Pyramid Prox demod - FSK RF/50 with preamble of 0000000000000001 (always a 128 bit data stream)
+//print full Farpointe Data/Pyramid Prox ID and some bit format details if found
+int CmdFSKdemodPyramid(const char *Cmd)
+{
+
+ int verbose=1;
+ sscanf(Cmd, "%i", &verbose);
+
+ //raw fsk demod no manchester decoding no start bit finding just get binary from wave
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
+
+ //get binary from fsk wave
+ int idx = PyramiddemodFSK(BitStream, size);
+ if (idx < 0){
+ if (verbose){
+ if (idx == -5)
+ PrintAndLog("Error: not enough samples");
+ else if (idx == -1)
+ PrintAndLog("Error: only noise found - no waves");
+ else if (idx == -2)
+ PrintAndLog("Error: problem during FSK demod");
+ //else if (idx == -3)
+ // PrintAndLog("Error: thought we had a tag but the parity failed");
+ else if (idx == -4)
+ PrintAndLog("Error: AWID preamble not found");
+ }
+ PrintAndLog("idx: %d",idx);
+ return 0;
+ }
+ //PrintAndLog("DEBUG: idx: %d",idx);
+
+ // Index map
+ // 0 10 20 30 40 50 60
+ // | | | | | | |
+ // 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3
+ // -----------------------------------------------------------------------------
+ // 0000000 0 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1 0000000 1
+ // premable xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o xxxxxxx o
+
+ // 64 70 80 90 100 110 120
+ // | | | | | | |
+ // 4567890 1 2345678 9 0123456 7 8901234 5 6789012 3 4567890 1 2345678 9 0123456 7
+ // -----------------------------------------------------------------------------
+ // 0000000 1 0000000 1 0000000 1 0110111 0 0011000 1 0000001 0 0001100 1 1001010 0
+ // xxxxxxx o xxxxxxx o xxxxxxx o xswffff o ffffccc o ccccccc o ccccccw o ppppppp o
+ // |---115---||---------71---------|
+ // s = format start bit, o = odd parity of last 7 bits
+ // f = facility code, c = card number
+ // w = wiegand parity, x = extra space for other formats
+ // p = unknown checksum
+ // (26 bit format shown)
+
+ //get raw ID before removing parities
+ uint32_t rawLo = bytebits_to_byte(BitStream+idx+96,32);
+ uint32_t rawHi = bytebits_to_byte(BitStream+idx+64,32);
+ uint32_t rawHi2 = bytebits_to_byte(BitStream+idx+32,32);
+ uint32_t rawHi3 = bytebits_to_byte(BitStream+idx,32);
+ size = removeParity(BitStream, idx+8, 8, 1, 120);
+ if (size != 105){
+ if (verbose) PrintAndLog("Error: at parity check-tag size does not match Pyramid format, SIZE: %d, IDX: %d, hi3: %x",size, idx, rawHi3);
+ return 0;
+ }
+
+ // ok valid card found!
+
+ // Index map
+ // 0 10 20 30 40 50 60 70
+ // | | | | | | | |
+ // 01234567890123456789012345678901234567890123456789012345678901234567890
+ // -----------------------------------------------------------------------
+ // 00000000000000000000000000000000000000000000000000000000000000000000000
+ // xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
+
+ // 71 80 90 100
+ // | | | |
+ // 1 2 34567890 1234567890123456 7 8901234
+ // ---------------------------------------
+ // 1 1 01110011 0000000001000110 0 1001010
+ // s w ffffffff cccccccccccccccc w ppppppp
+ // |--115-| |------71------|
+ // s = format start bit, o = odd parity of last 7 bits
+ // f = facility code, c = card number
+ // w = wiegand parity, x = extra space for other formats
+ // p = unknown checksum
+ // (26 bit format shown)
+
+ //find start bit to get fmtLen
+ idx = 0;
+ int j;
+ for (j=0; j<size; j++){
+ if(BitStream[idx+j]) break;
+ }
+ uint8_t fmtLen = size-j-8;
+ uint32_t fc = 0;
+ uint32_t cardnum = 0;
+ uint32_t code1 = 0;
+ //uint32_t code2 = 0;
+ if (fmtLen==26){
+ fc = bytebits_to_byte(BitStream+73, 8);
+ cardnum = bytebits_to_byte(BitStream+81, 16);
+ code1 = bytebits_to_byte(BitStream+72,fmtLen);
+ PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, code1, rawHi3, rawHi2, rawHi, rawLo);
+ } else if (fmtLen==45){
+ fmtLen=42; //end = 10 bits not 7 like 26 bit fmt
+ fc = bytebits_to_byte(BitStream+53, 10);
+ cardnum = bytebits_to_byte(BitStream+63, 32);
+ PrintAndLog("AWID Found - BitLength: %d, FC: %d, Card: %d - Raw: %x%08x%08x%08x", fmtLen, fc, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ } else {
+ cardnum = bytebits_to_byte(BitStream+81, 16);
+ if (fmtLen>32){
+ //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen-32);
+ //code2 = bytebits_to_byte(BitStream+(size-32),32);
+ PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ } else{
+ //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
+ PrintAndLog("AWID Found - BitLength: %d -unknown BitLength- (%d), Raw: %x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ }
+ }
+ //todo - convert hi2, hi, lo to demodbuffer for future sim/clone commands
+
+ return 1;
+}
+
int CmdFSKdemod(const char *Cmd) //old CmdFSKdemod needs updating
{
static const int LowTone[] = {
return 0;
}
+int CmdFSKfcDetect(const char *Cmd)
+{
+ uint8_t BitStream[MAX_GRAPH_TRACE_LEN]={0};
+ size_t size = getFromGraphBuf(BitStream);
+
+
+ uint32_t ans = countFC(BitStream, size);
+ int fc1, fc2, rf1;
+ fc1 = (ans >> 8) & 0xFF;
+ fc2 = ans & 0xFF;
+ rf1 = (ans >>16) & 0xFF;
+ PrintAndLog("Detected Field Clocks: FC/%d, FC/%d - Bit Clock: RF/%d", fc1, fc2, rf1);
+ return 1;
+}
+
int CmdDetectNRZpskClockRate(const char *Cmd)
{
GetNRZpskClock("",0,0);
{"help", CmdHelp, 1, "This help"},
{"amp", CmdAmp, 1, "Amplify peaks"},
{"askdemod", Cmdaskdemod, 1, "<0 or 1> -- Attempt to demodulate simple ASK tags"},
- {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional[clock will try Auto-detect])"},
- {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output binary (args optional[clock will try Auto-detect])"},
+ {"askmandemod", Cmdaskmandemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK/Manchester tags and output binary (args optional)"},
+ {"askrawdemod", Cmdaskrawdemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate ASK tags and output bin (args optional)"},
{"autocorr", CmdAutoCorr, 1, "<window length> -- Autocorrelation over window"},
- {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] Biphase decode binary stream already in graph buffer (offset = bit to start decode from)"},
+ {"biphaserawdecode",CmdBiphaseDecodeRaw,1,"[offset] [invert<0|1>] Biphase decode bin stream in demod buffer (offset = 0|1 bits to shift the decode start)"},
{"bitsamples", CmdBitsamples, 0, "Get raw samples as bitstring"},
{"bitstream", CmdBitstream, 1, "[clock rate] -- Convert waveform into a bitstream"},
{"buffclear", CmdBuffClear, 1, "Clear sample buffer and graph window"},
{"dec", CmdDec, 1, "Decimate samples"},
{"detectclock", CmdDetectClockRate, 1, "Detect ASK clock rate"},
{"fskdemod", CmdFSKdemod, 1, "Demodulate graph window as a HID FSK"},
- {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK using raw"},
- {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox FSK using raw"},
- {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to binary (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
+ {"fskawiddemod", CmdFSKdemodAWID, 1, "Demodulate graph window as an AWID FSK tag using raw"},
+ {"fskfcdetect", CmdFSKfcDetect, 1, "Try to detect the Field Clock of an FSK wave"},
+ {"fskhiddemod", CmdFSKdemodHID, 1, "Demodulate graph window as a HID FSK tag using raw"},
+ {"fskiodemod", CmdFSKdemodIO, 1, "Demodulate graph window as an IO Prox tag FSK using raw"},
+ {"fskpyramiddemod",CmdFSKdemodPyramid,1, "Demodulate graph window as a Pyramid FSK tag using raw"},
+ {"fskrawdemod", CmdFSKrawdemod, 1, "[clock rate] [invert] [rchigh] [rclow] Demodulate graph window from FSK to bin (clock = 50)(invert = 1|0)(rchigh = 10)(rclow=8)"},
{"grid", CmdGrid, 1, "<x> <y> -- overlay grid on graph window, use zero value to turn off either"},
{"hexsamples", CmdHexsamples, 0, "<bytes> [<offset>] -- Dump big buffer as hex bytes"},
{"hide", CmdHide, 1, "Hide graph window"},
{"plot", CmdPlot, 1, "Show graph window (hit 'h' in window for keystroke help)"},
{"pskclean", CmdPskClean, 1, "Attempt to clean psk wave"},
{"pskdetectclock",CmdDetectNRZpskClockRate, 1, "Detect ASK, PSK, or NRZ clock rate"},
- {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk indala tags and output ID binary & hex (args optional[clock will try Auto-detect])"},
- {"psknrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk or nrz tags and output binary (args optional[clock will try Auto-detect])"},
+ {"pskindalademod",CmdIndalaDecode, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk indala tags and output ID binary & hex (args optional)"},
+ {"psknrzrawdemod",CmdpskNRZrawDemod, 1, "[clock] [invert<0|1>] -- Attempt to demodulate psk or nrz tags and output binary (args optional)"},
{"samples", CmdSamples, 0, "[512 - 40000] -- Get raw samples for graph window"},
{"save", CmdSave, 1, "<filename> -- Save trace (from graph window)"},
{"scale", CmdScale, 1, "<int> -- Set cursor display scale"},
projects / proxmark3-svn / blobdiff