// the license.
//-----------------------------------------------------------------------------
// Low frequency Farpoint / Pyramid tag commands
+// FSK2a, rf/50, 128 bits (complete)
//-----------------------------------------------------------------------------
#include <string.h>
#include <inttypes.h>
#include "util.h"
#include "graph.h"
#include "cmdparser.h"
-#include "cmddata.h"
+#include "cmddata.h" // setDemodBuf +
#include "cmdmain.h"
#include "cmdlf.h"
#include "protocols.h" // for T55xx config register definitions
int usage_lf_pyramid_clone(void){
PrintAndLog("clone a Farpointe/Pyramid 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("Currently only works on 26bit");
PrintAndLog("");
PrintAndLog("Usage: lf pyramid clone <Facility-Code> <Card-Number>");
PrintAndLog("Options :");
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)
+{
+ //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);
+ if (size==0) return 0;
+
+ int waveIdx=0;
+ //get binary from fsk wave
+ int idx = PyramiddemodFSK(BitStream, &size, &waveIdx);
+ if (idx < 0){
+ if (g_debugMode){
+ if (idx == -5)
+ PrintAndLog("DEBUG: Error - not enough samples");
+ else if (idx == -1)
+ PrintAndLog("DEBUG: Error - only noise found");
+ else if (idx == -2)
+ PrintAndLog("DEBUG: Error - problem during FSK demod");
+ else if (idx == -3)
+ PrintAndLog("DEBUG: Error - Size not correct: %d", size);
+ else if (idx == -4)
+ PrintAndLog("DEBUG: Error - Pyramid preamble not found");
+ else
+ PrintAndLog("DEBUG: Error - idx: %d",idx);
+ }
+ return 0;
+ }
+ // 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 bytes for checksum calc
+ uint8_t checksum = bytebits_to_byte(BitStream + idx + 120, 8);
+ uint8_t csBuff[14] = {0x00};
+ for (uint8_t i = 0; i < 13; i++){
+ csBuff[i] = bytebits_to_byte(BitStream + idx + 16 + (i*8), 8);
+ }
+ //check checksum calc
+ //checksum calc thanks to ICEMAN!!
+ uint32_t checkCS = CRC8Maxim(csBuff,13);
+
+ //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);
+ setDemodBuf(BitStream,128,idx);
+ setClockGrid(50, waveIdx + (idx*50));
+
+ size = removeParity(BitStream, idx+8, 8, 1, 120);
+ if (size != 105){
+ if (g_debugMode)
+ PrintAndLog("DEBUG: 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
+ int j;
+ for (j=0; j<size; j++){
+ if(BitStream[j]) break;
+ }
+ uint8_t fmtLen = size-j-8;
+ uint32_t fc = 0;
+ uint32_t cardnum = 0;
+ uint32_t code1 = 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("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Wiegand: %x, Raw: %08x%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("Pyramid ID Found - BitLength: %d, FC: %d, Card: %d - Raw: %08x%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("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ } else{
+ //code1 = bytebits_to_byte(BitStream+(size-fmtLen),fmtLen);
+ PrintAndLog("Pyramid ID Found - BitLength: %d -unknown BitLength- (%d), Raw: %08x%08x%08x%08x", fmtLen, cardnum, rawHi3, rawHi2, rawHi, rawLo);
+ }
+ }
+ if (checksum == checkCS)
+ PrintAndLog("Checksum %02x passed", checksum);
+ else
+ PrintAndLog("Checksum %02x failed - should have been %02x", checksum, checkCS);
+
+ if (g_debugMode){
+ PrintAndLog("DEBUG: idx: %d, Len: %d, Printing Demod Buffer:", idx, 128);
+ printDemodBuff();
+ }
+ return 1;
+}
+
int CmdPyramidRead(const char *Cmd) {
- CmdLFRead("s");
- getSamples("30000",false);
+ lf_read(true, 15000);
return CmdFSKdemodPyramid("");
}
}
static command_t CommandTable[] = {
- {"help", CmdHelp, 1, "This help"},
- {"read", CmdPyramidRead, 0, "Attempt to read and extract tag data"},
- {"clone", CmdPyramidClone, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
- {"sim", CmdPyramidSim, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
+ {"help", CmdHelp, 1, "This help"},
+ {"demod", CmdFSKdemodPyramid, 1, "Demodulate a Pyramid FSK tag from the GraphBuffer"},
+ {"read", CmdPyramidRead, 0, "Attempt to read and extract tag data"},
+ {"clone", CmdPyramidClone, 0, "<Facility-Code> <Card Number> clone pyramid tag"},
+ {"sim", CmdPyramidSim, 0, "<Facility-Code> <Card Number> simulate pyramid tag"},
{NULL, NULL, 0, NULL}
};
projects / proxmark3-svn / blobdiff