- // Is this the entire sync pattern, or does this also include some
- // data bits that happen to be the same everywhere? That would be
- // lovely to know.
- static const int SyncPattern[] = {
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
- 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
- };
-
- // So first, we correlate for the sync pattern, and mark that.
- int bestCorrel = 0, bestPos = 0;
- int i;
- // It does us no good to find the sync pattern, with fewer than
- // 2048 samples after it...
- for (i = 0; i < (GraphTraceLen-2048); i++) {
- int sum = 0;
- int j;
- for (j = 0; j < arraylen(SyncPattern); j++) {
- sum += GraphBuffer[i+j]*SyncPattern[j];
- }
- if (sum > bestCorrel) {
- bestCorrel = sum;
- bestPos = i;
- }
- }
- PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
-
- char bits[257];
- bits[256] = '\0';
-
- int worst = INT_MAX;
- int worstPos = 0;
-
- for (i = 0; i < 2048; i += 8) {
- int sum = 0;
- int j;
- for (j = 0; j < 8; j++) {
- sum += GraphBuffer[bestPos+i+j];
- }
- if (sum < 0) {
- bits[i/8] = '.';
- } else {
- bits[i/8] = '1';
- }
- if(abs(sum) < worst) {
- worst = abs(sum);
- worstPos = i;
- }
- }
- PrintAndLog("bits:");
- PrintAndLog("%s", bits);
- PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
-
- if (strcmp(Cmd, "clone")==0) {
- GraphTraceLen = 0;
- char *s;
- for(s = bits; *s; s++) {
- int j;
- for(j = 0; j < 16; j++) {
- GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
- }
- }
- RepaintGraphWindow();
- }
- return 0;
+ // autodetect clock from Graphbuffer if using demod buffer
+ // needs clock, invert, manchester/raw as m or r, separator as s, and bitstream
+ uint8_t encoding = 1, separator = 0, clk = 0, invert = 0;
+ bool errors = FALSE;
+ char hexData[32] = {0x00};
+ uint8_t data[255]= {0x00}; // store entered hex data
+ int dataLen = 0;
+ uint8_t cmdp = 0;
+
+ while(param_getchar(Cmd, cmdp) != 0x00) {
+ switch(param_getchar(Cmd, cmdp)) {
+ case 'H':
+ case 'h': return usage_lf_simask();
+ case 'i':
+ invert = 1;
+ cmdp++;
+ break;
+ case 'c':
+ errors |= param_getdec(Cmd, cmdp+1, &clk);
+ cmdp += 2;
+ break;
+ case 'b':
+ encoding = 2; //biphase
+ cmdp++;
+ break;
+ case 'm':
+ encoding = 1; //manchester
+ cmdp++;
+ break;
+ case 'r':
+ encoding = 0; //raw
+ cmdp++;
+ break;
+ case 's':
+ separator = 1;
+ cmdp++;
+ break;
+ case 'd':
+ dataLen = param_getstr(Cmd, cmdp+1, hexData);
+ if (dataLen == 0)
+ errors = TRUE;
+ else
+ dataLen = hextobinarray((char *)data, hexData);
+
+ if (dataLen == 0) errors = TRUE;
+ if (errors) PrintAndLog ("Error getting hex data, datalen: %d", dataLen);
+ cmdp += 2;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ errors = TRUE;
+ break;
+ }
+ if(errors) break;
+ }
+
+ // No args
+ if(cmdp == 0 && DemodBufferLen == 0)
+ errors = TRUE;
+
+ //Validations
+ if(errors) return usage_lf_simask();
+
+ if (dataLen == 0){ //using DemodBuffer
+ if (clk == 0)
+ clk = GetAskClock("0", false, false);
+ } else {
+ setDemodBuf(data, dataLen, 0);
+ }
+ if (clk == 0) clk = 64;
+ if (encoding == 0) clk >>= 2; //askraw needs to double the clock speed
+
+ size_t size = DemodBufferLen;
+
+ if (size > USB_CMD_DATA_SIZE) {
+ PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+ size = USB_CMD_DATA_SIZE;
+ }
+
+ PrintAndLog("preparing to sim ask data: %d bits", size);
+
+ uint16_t arg1, arg2;
+ arg1 = clk << 8 | encoding;
+ arg2 = invert << 8 | separator;
+
+ UsbCommand c = {CMD_ASK_SIM_TAG, {arg1, arg2, size}};
+ memcpy(c.d.asBytes, DemodBuffer, size);
+ clearCommandBuffer();
+ SendCommand(&c);
+ return 0;
+}
+
+// by marshmellow - sim psk data given carrier, clock, invert
+// - allow pull data from DemodBuffer or parameters
+int CmdLFpskSim(const char *Cmd) {
+ //might be able to autodetect FC and clock from Graphbuffer if using demod buffer
+ //will need carrier, Clock, and bitstream
+ uint8_t carrier=0, clk=0;
+ uint8_t invert=0;
+ bool errors = FALSE;
+ char hexData[32] = {0x00}; // store entered hex data
+ uint8_t data[255] = {0x00};
+ int dataLen = 0;
+ uint8_t cmdp = 0;
+ uint8_t pskType = 1;
+
+ while(param_getchar(Cmd, cmdp) != 0x00) {
+ switch(param_getchar(Cmd, cmdp)) {
+ case 'h':
+ return usage_lf_simpsk();
+ case 'i':
+ invert = 1;
+ cmdp++;
+ break;
+ case 'c':
+ errors |= param_getdec(Cmd,cmdp+1,&clk);
+ cmdp +=2;
+ break;
+ case 'r':
+ errors |= param_getdec(Cmd,cmdp+1,&carrier);
+ cmdp += 2;
+ break;
+ case '1':
+ pskType = 1;
+ cmdp++;
+ break;
+ case '2':
+ pskType = 2;
+ cmdp++;
+ break;
+ case '3':
+ pskType = 3;
+ cmdp++;
+ break;
+ case 'd':
+ dataLen = param_getstr(Cmd, cmdp+1, hexData);
+ if (dataLen == 0)
+ errors = TRUE;
+ else
+ dataLen = hextobinarray((char *)data, hexData);
+
+ if (dataLen == 0) errors = TRUE;
+ if (errors) PrintAndLog ("Error getting hex data");
+ cmdp+=2;
+ break;
+ default:
+ PrintAndLog("Unknown parameter '%c'", param_getchar(Cmd, cmdp));
+ errors = TRUE;
+ break;
+ }
+ if (errors) break;
+ }
+ // No args
+ if (cmdp == 0 && DemodBufferLen == 0)
+ errors = TRUE;
+
+ //Validations
+ if (errors) return usage_lf_simpsk();
+
+ if (dataLen == 0){ //using DemodBuffer
+ PrintAndLog("Getting Clocks");
+
+ if (clk==0) clk = GetPskClock("", FALSE, FALSE);
+ PrintAndLog("clk: %d",clk);
+
+ if (!carrier) carrier = GetPskCarrier("", FALSE, FALSE);
+ PrintAndLog("carrier: %d", carrier);
+
+ } else {
+ setDemodBuf(data, dataLen, 0);
+ }
+
+ if (clk <= 0) clk = 32;
+
+ if (carrier == 0) carrier = 2;
+
+ if (pskType != 1){
+ if (pskType == 2){
+ //need to convert psk2 to psk1 data before sim
+ psk2TOpsk1(DemodBuffer, DemodBufferLen);
+ } else {
+ PrintAndLog("Sorry, PSK3 not yet available");
+ }
+ }
+ uint16_t arg1, arg2;
+ arg1 = clk << 8 | carrier;
+ arg2 = invert;
+ size_t size = DemodBufferLen;
+ if (size > USB_CMD_DATA_SIZE) {
+ PrintAndLog("DemodBuffer too long for current implementation - length: %d - max: %d", size, USB_CMD_DATA_SIZE);
+ size = USB_CMD_DATA_SIZE;
+ }
+ UsbCommand c = {CMD_PSK_SIM_TAG, {arg1, arg2, size}};
+ PrintAndLog("DEBUG: Sending DemodBuffer Length: %d", size);
+ memcpy(c.d.asBytes, DemodBuffer, size);
+ clearCommandBuffer();
+ SendCommand(&c);
+ return 0;
+}
+
+int CmdLFSimBidir(const char *Cmd) {
+ // Set ADC to twice the carrier for a slight supersampling
+ // HACK: not implemented in ARMSRC.
+ PrintAndLog("Not implemented yet.");
+ UsbCommand c = {CMD_LF_SIMULATE_BIDIR, {47, 384, 0}};
+ SendCommand(&c);
+ return 0;
+}
+
+int CmdVchDemod(const char *Cmd) {
+ // Is this the entire sync pattern, or does this also include some
+ // data bits that happen to be the same everywhere? That would be
+ // lovely to know.
+ static const int SyncPattern[] = {
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
+ 1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1,
+ };
+
+ // So first, we correlate for the sync pattern, and mark that.
+ int bestCorrel = 0, bestPos = 0;
+ int i, j, sum = 0;
+
+ // It does us no good to find the sync pattern, with fewer than 2048 samples after it.
+
+ for (i = 0; i < (GraphTraceLen - 2048); i++) {
+ for (j = 0; j < ARRAYLEN(SyncPattern); j++) {
+ sum += GraphBuffer[i+j] * SyncPattern[j];
+ }
+ if (sum > bestCorrel) {
+ bestCorrel = sum;
+ bestPos = i;
+ }
+ }
+ PrintAndLog("best sync at %d [metric %d]", bestPos, bestCorrel);
+
+ char bits[257];
+ bits[256] = '\0';
+
+ int worst = INT_MAX, worstPos = 0;
+
+ for (i = 0; i < 2048; i += 8) {
+ sum = 0;
+ for (j = 0; j < 8; j++)
+ sum += GraphBuffer[bestPos+i+j];
+
+ if (sum < 0)
+ bits[i/8] = '.';
+ else
+ bits[i/8] = '1';
+
+ if(abs(sum) < worst) {
+ worst = abs(sum);
+ worstPos = i;
+ }
+ }
+ PrintAndLog("bits:");
+ PrintAndLog("%s", bits);
+ PrintAndLog("worst metric: %d at pos %d", worst, worstPos);
+
+ // clone
+ if (strcmp(Cmd, "clone")==0) {
+ GraphTraceLen = 0;
+ char *s;
+ for(s = bits; *s; s++) {
+ for(j = 0; j < 16; j++) {
+ GraphBuffer[GraphTraceLen++] = (*s == '1') ? 1 : 0;
+ }
+ }
+ RepaintGraphWindow();
+ }
+ return 0;
+}
+
+//by marshmellow
+int CmdLFfind(const char *Cmd) {
+ int ans = 0;
+ size_t minLength = 1000;
+ char cmdp = param_getchar(Cmd, 0);
+ char testRaw = param_getchar(Cmd, 1);
+ if (strlen(Cmd) > 3 || cmdp == 'h' || cmdp == 'H') return usage_lf_find();
+
+ if (!offline && (cmdp != '1')){
+ CmdLFRead("s");
+ getSamples("30000", false);
+ } else if (GraphTraceLen < minLength) {
+ PrintAndLog("Data in Graphbuffer was too small.");
+ return 0;
+ }
+ if (cmdp == 'u' || cmdp == 'U') testRaw = 'u';
+
+ PrintAndLog("NOTE: some demods output possible binary\n if it finds something that looks like a tag");
+ PrintAndLog("False Positives ARE possible\n");
+ PrintAndLog("\nChecking for known tags:\n");
+
+ size_t testLen = minLength;
+
+ // only run these tests if device is online
+ if (!offline && (cmdp != '1')){
+
+ // only run if graphbuffer is just noise as it should be for hitag/cotag
+ if (graphJustNoise(GraphBuffer, testLen)) {
+
+ ans=CmdLFHitagReader("26");
+ if (ans==0)
+ return 1;
+
+ ans=CmdCOTAGRead("");
+ if (ans>0){
+ PrintAndLog("\nValid COTAG ID Found!");
+ return 1;
+ }
+ PrintAndLog("Signal looks just like noise. Quitting.");
+ return 0;
+ }
+ }
+
+ ans=CmdFSKdemodIO("");
+ if (ans>0) {
+ PrintAndLog("\nValid IO Prox ID Found!");
+ return 1;
+ }
+ ans=CmdFSKdemodPyramid("");
+ if (ans>0) {
+ PrintAndLog("\nValid Pyramid ID Found!");
+ return 1;
+ }
+ ans=CmdFSKdemodParadox("");
+ if (ans>0) {
+ PrintAndLog("\nValid Paradox ID Found!");
+ return 1;
+ }
+ ans=CmdFSKdemodAWID("");
+ if (ans>0) {
+ PrintAndLog("\nValid AWID ID Found!");
+ return 1;
+ }
+ ans=CmdFSKdemodHID("");
+ if (ans>0) {
+ PrintAndLog("\nValid HID Prox ID Found!");
+ return 1;
+ }
+ ans=CmdAskEM410xDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid EM410x ID Found!");
+ return 1;
+ }
+ ans=CmdG_Prox_II_Demod("");
+ if (ans>0) {
+ PrintAndLog("\nValid Guardall G-Prox II ID Found!");
+ return 1;
+ }
+ ans=CmdFDXBdemodBI("");
+ if (ans>0) {
+ PrintAndLog("\nValid FDX-B ID Found!");
+ return 1;
+ }
+ ans=EM4x50Read("", false);
+ if (ans>0) {
+ PrintAndLog("\nValid EM4x50 ID Found!");
+ return 1;
+ }
+ ans=CmdVikingDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid Viking ID Found!");
+ return 1;
+ }
+ ans=CmdIndalaDecode("");
+ if (ans>0) {
+ PrintAndLog("\nValid Indala ID Found!");
+ return 1;
+ }
+ ans=CmdPSKNexWatch("");
+ if (ans>0) {
+ PrintAndLog("\nValid NexWatch ID Found!");
+ return 1;
+ }
+ ans=CmdPSKIdteck("");
+ if (ans>0) {
+ PrintAndLog("\nValid Idteck ID Found!");
+ return 1;
+ }
+ ans=CmdJablotronDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid Jablotron ID Found!");
+ return 1;
+ }
+ ans=CmdLFNedapDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid NEDAP ID Found!");
+ return 1;
+ }
+ ans=CmdVisa2kDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid Visa2000 ID Found!");
+ return 1;
+ }
+ ans=CmdNoralsyDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid Noralsy ID Found!");
+ return 1;
+ }
+ ans=CmdPrescoDemod("");
+ if (ans>0) {
+ PrintAndLog("\nValid Presco ID Found!");
+ return 1;
+ }
+
+ // TIdemod?
+ PrintAndLog("\nNo Known Tags Found!\n");
+ if (testRaw=='u' || testRaw=='U'){
+ //test unknown tag formats (raw mode)
+ PrintAndLog("\nChecking for Unknown tags:\n");
+ ans=AutoCorrelate(4000, FALSE, FALSE);
+
+ if (ans > 0) {
+
+ PrintAndLog("Possible Auto Correlation of %d repeating samples",ans);
+
+ if ( ans % 8 == 0) {
+ int bytes = (ans / 8);
+ PrintAndLog("Possible %d bytes", bytes);
+ int blocks = 0;
+ if ( bytes % 2 == 0) {
+ blocks = (bytes / 2);
+ PrintAndLog("Possible 2 blocks, width %d", blocks);
+ }
+ if ( bytes % 4 == 0) {
+ blocks = (bytes / 4);
+ PrintAndLog("Possible 4 blocks, width %d", blocks);
+ }
+ if ( bytes % 8 == 0) {
+ blocks = (bytes / 8);
+ PrintAndLog("Possible 8 blocks, width %d", blocks);
+ }
+ if ( bytes % 16 == 0) {
+ blocks = (bytes / 16);
+ PrintAndLog("Possible 16 blocks, width %d", blocks);
+ }
+ }
+ }
+
+ ans=GetFskClock("",FALSE,FALSE);
+ if (ans != 0){ //fsk
+ ans=FSKrawDemod("",TRUE);
+ if (ans>0) {
+ PrintAndLog("\nUnknown FSK Modulated Tag Found!");
+ return 1;
+ }
+ }
+ bool st = TRUE;
+ ans=ASKDemod_ext("0 0 0",TRUE,FALSE,1,&st);
+ if (ans>0) {
+ PrintAndLog("\nUnknown ASK Modulated and Manchester encoded Tag Found!");
+ PrintAndLog("\nif it does not look right it could instead be ASK/Biphase - try 'data rawdemod ab'");
+ return 1;
+ }
+
+ ans=CmdPSK1rawDemod("");
+ if (ans>0) {
+ PrintAndLog("Possible unknown PSK1 Modulated Tag Found above!\n\nCould also be PSK2 - try 'data rawdemod p2'");
+ PrintAndLog("\nCould also be PSK3 - [currently not supported]");
+ PrintAndLog("\nCould also be NRZ - try 'data nrzrawdemod");
+ return 1;
+ }
+ PrintAndLog("\nNo Data Found!\n");
+ }
+ return 0;
projects / proxmark3-svn / blobdiff