diff --git a/client/cmdlft55xx.c b/client/cmdlft55xx.c index 743d2db9c..bf73d6ff5 100644 --- a/client/cmdlft55xx.c +++ b/client/cmdlft55xx.c @@ -1507,7 +1507,7 @@ int CmdT55xxBruteForce(const char *Cmd) { // load a default pwd file. char line[9]; - char filename[FILE_PATH_SIZE]={0}; + char filename[FILE_PATH_SIZE] = {0}; int keycnt = 0; uint8_t stKeyBlock = 20; uint8_t *keyBlock = NULL, *p = NULL; @@ -1752,9 +1752,10 @@ int CmdT55xxRecoverPW(const char *Cmd) { return 0; } + // note length of data returned is different for different chips. -// some return all page 1 (64 bits) and others return just that block (32 bits) -// unfortunately the 64 bits makes this more likely to get a false positive... +// some return all page 1 (64 bits) and others return just that block (32 bits) +// unfortunately the 64 bits makes this more likely to get a false positive... bool tryDetectP1(bool getData) { uint8_t preamble[] = {1,1,1,0,0,0,0,0,0,0,0,1,0,1,0,1}; size_t startIdx = 0; @@ -1771,7 +1772,7 @@ bool tryDetectP1(bool getData) { ans = fskClocks(&fc1, &fc2, (uint8_t *)&clk, &firstClockEdge); if (ans && ((fc1==10 && fc2==8) || (fc1==8 && fc2==5))) { if ( FSKrawDemod("0 0", false) && - preambleSearchEx(DemodBuffer, preamble,sizeof(preamble), &DemodBufferLen, &startIdx, false) && + preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && (DemodBufferLen == 32 || DemodBufferLen == 64) ) { return true; } @@ -1783,40 +1784,6 @@ bool tryDetectP1(bool getData) { return false; } - // try psk clock detect. if successful it cannot be any other type of modulation... (in theory...) - clk = GetPskClock("", false); - if (clk > 0) { - // allow undo - // save_restoreGB(1); - // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise) - //CmdLtrim("160"); - if ( PSKDemod("0 0 6", false) && - preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && - (DemodBufferLen == 32 || DemodBufferLen == 64) ) { - //save_restoreGB(0); - return true; - } - if ( PSKDemod("0 1 6", false) && - preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && - (DemodBufferLen == 32 || DemodBufferLen == 64) ) { - //save_restoreGB(0); - return true; - } - // PSK2 - needs a call to psk1TOpsk2. - if ( PSKDemod("0 0 6", false)) { - psk1TOpsk2(DemodBuffer, DemodBufferLen); - if (preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && - (DemodBufferLen == 32 || DemodBufferLen == 64) ) { - //save_restoreGB(0); - return true; - } - } // inverse waves does not affect PSK2 demod - //undo trim samples - //save_restoreGB(0); - // no other modulation clocks = 2 or 4 so quit searching - if (fc1 != 8) return false; - } - // try ask clock detect. it could be another type even if successful. clk = GetAskClock("", false); if (clk>0) { @@ -1857,6 +1824,42 @@ bool tryDetectP1(bool getData) { return true; } } + + // Fewer card uses PSK + // try psk clock detect. if successful it cannot be any other type of modulation... (in theory...) + clk = GetPskClock("", false); + if (clk > 0) { + // allow undo + // save_restoreGB(1); + // skip first 160 samples to allow antenna to settle in (psk gets inverted occasionally otherwise) + //CmdLtrim("160"); + if ( PSKDemod("0 0 6", false) && + preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && + (DemodBufferLen == 32 || DemodBufferLen == 64) ) { + //save_restoreGB(0); + return true; + } + if ( PSKDemod("0 1 6", false) && + preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && + (DemodBufferLen == 32 || DemodBufferLen == 64) ) { + //save_restoreGB(0); + return true; + } + // PSK2 - needs a call to psk1TOpsk2. + if ( PSKDemod("0 0 6", false)) { + psk1TOpsk2(DemodBuffer, DemodBufferLen); + if (preambleSearchEx(DemodBuffer, preamble, sizeof(preamble), &DemodBufferLen, &startIdx, false) && + (DemodBufferLen == 32 || DemodBufferLen == 64) ) { + //save_restoreGB(0); + return true; + } + } // inverse waves does not affect PSK2 demod + //undo trim samples + //save_restoreGB(0); + // no other modulation clocks = 2 or 4 so quit searching + if (fc1 != 8) return false; + } + return false; } // does this need to be a callable command?