X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/b225678574c43cd109503f0b2d94f70499812c67..083ca3de73b2ae8f3842cae24571962a27741601:/armsrc/lfops.c diff --git a/armsrc/lfops.c b/armsrc/lfops.c index ba9015ee..95a9fcf6 100644 --- a/armsrc/lfops.c +++ b/armsrc/lfops.c @@ -634,11 +634,10 @@ size_t fsk_demod(uint8_t * dest, size_t size) { uint32_t last_transition = 0; uint32_t idx = 1; - // we don't care about actual value, only if it's more or less than a // threshold essentially we capture zero crossings for later analysis uint8_t threshold_value = 127; - + // sync to first lo-hi transition, and threshold //Need to threshold first sample @@ -670,7 +669,7 @@ size_t fsk_demod(uint8_t * dest, size_t size) } -size_t aggregate_bits(uint8_t *dest,size_t size, uint8_t h2l_crossing_value,uint8_t l2h_crossing_value, uint8_t maxConsequtiveBits ) +size_t aggregate_bits(uint8_t *dest,size_t size, uint8_t h2l_crossing_value,uint8_t l2h_crossing_value, uint8_t maxConsequtiveBits, uint8_t invert ) { uint8_t lastval=dest[0]; uint32_t idx=0; @@ -684,24 +683,27 @@ size_t aggregate_bits(uint8_t *dest,size_t size, uint8_t h2l_crossing_value,uint continue; } //if lastval was 1, we have a 1->0 crossing - if ( dest[idx-1] ) { + if ( dest[idx-1]==1 ) { n=(n+1) / h2l_crossing_value; } else {// 0->1 crossing n=(n+1) / l2h_crossing_value; } if (n == 0) n = 1; - if(n < maxConsequtiveBits) + if(n < maxConsequtiveBits) //Consecutive { - memset(dest+numBits, dest[idx-1] , n); + if(invert==0){ //invert bits + memset(dest+numBits, dest[idx-1] , n); + }else{ + memset(dest+numBits, dest[idx-1]^1 , n); + } + numBits += n; } n=0; lastval=dest[idx]; }//end for - return numBits; - } // loop to capture raw HID waveform then FSK demodulate the TAG ID from it void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) @@ -711,14 +713,11 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) size_t size=0,idx=0; //, found=0; uint32_t hi2=0, hi=0, lo=0; + // Configure to go in 125Khz listen mode + LFSetupFPGAForADC(95, true); while(!BUTTON_PRESS()) { - /** TODO! This should probably be moved outside the loop /Martin */ - // Configure to go in 125Khz listen mode - LFSetupFPGAForADC(0, true); - - WDT_HIT(); if (ledcontrol) LED_A_ON(); @@ -727,12 +726,12 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) // FSK demodulator size = fsk_demod(dest, size); - WDT_HIT(); // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns - // 1->0 : fc/8 in sets of 6 - // 0->1 : fc/10 in sets of 5 - size = aggregate_bits(dest,size, 6,5,5); + // 1->0 : fc/8 in sets of 6 (RF/50 / 8 = 6.25) + // 0->1 : fc/10 in sets of 5 (RF/50 / 10= 5) + // do not invert + size = aggregate_bits(dest,size, 6,5,5,0); WDT_HIT(); @@ -746,9 +745,9 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) { // frame marker found idx+=sizeof(frame_marker_mask); - while(dest[idx] != dest[idx+1] && idx < size-2) - { // Keep going until next frame marker (or error) + { + // Keep going until next frame marker (or error) // Shift in a bit. Start by shifting high registers hi2 = (hi2<<1)|(hi>>31); hi = (hi<<1)|(lo>>31); @@ -758,23 +757,73 @@ void CmdHIDdemodFSK(int findone, int *high, int *low, int ledcontrol) else // 0 1 lo=(lo<<1)| 1; - numshifts ++; + numshifts++; idx += 2; } //Dbprintf("Num shifts: %d ", numshifts); // Hopefully, we read a tag and hit upon the next frame marker - if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) + if(idx + sizeof(frame_marker_mask) < size) { - if (hi2 != 0){ - Dbprintf("TAG ID: %x%08x%08x (%d)", - (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); - } - else { - Dbprintf("TAG ID: %x%08x (%d)", - (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + if ( memcmp(dest+idx, frame_marker_mask, sizeof(frame_marker_mask)) == 0) + { + if (hi2 != 0){ //extra large HID tags + Dbprintf("TAG ID: %x%08x%08x (%d)", + (unsigned int) hi2, (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + } + else { //standard HID tags <38 bits + //Dbprintf("TAG ID: %x%08x (%d)",(unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); //old print cmd + uint8_t bitlen = 0; + uint32_t fc = 0; + uint32_t cardnum = 0; + if (((hi>>5)&1)==1){//if bit 38 is set then < 37 bit format is used + uint32_t lo2=0; + lo2=(((hi & 31) << 12) | (lo>>20)); //get bits 21-37 to check for format len bit + uint8_t idx3 = 1; + while(lo2>1){ //find last bit set to 1 (format len bit) + lo2=lo2>>1; + idx3++; + } + bitlen =idx3+19; + fc =0; + cardnum=0; + if(bitlen==26){ + cardnum = (lo>>1)&0xFFFF; + fc = (lo>>17)&0xFF; + } + if(bitlen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + if(bitlen==34){ + cardnum = (lo>>1)&0xFFFF; + fc= ((hi&1)<<15)|(lo>>17); + } + if(bitlen==35){ + cardnum = (lo>>1)&0xFFFFF; + fc = ((hi&1)<<11)|(lo>>21); + } + } + else { //if bit 38 is not set then 37 bit format is used + bitlen= 37; + fc =0; + cardnum=0; + if(bitlen==37){ + cardnum = (lo>>1)&0x7FFFF; + fc = ((hi&0xF)<<12)|(lo>>20); + } + } + //Dbprintf("TAG ID: %x%08x (%d)", + // (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF); + Dbprintf("TAG ID: %x%08x (%d) - Format Len: %dbit - FC: %d - Card: %d", + (unsigned int) hi, (unsigned int) lo, (unsigned int) (lo>>1) & 0xFFFF, + (unsigned int) bitlen, (unsigned int) fc, (unsigned int) cardnum); + } + if (findone){ + if (ledcontrol) LED_A_OFF(); + return; + } } } - // reset hi2 = hi = lo = 0; numshifts = 0; @@ -801,66 +850,63 @@ uint32_t bytebits_to_byte(uint8_t* src, int numbits) return num; } - void CmdIOdemodFSK(int findone, int *high, int *low, int ledcontrol) { uint8_t *dest = (uint8_t *)BigBuf; - size_t size=0, idx=0; uint32_t code=0, code2=0; - + // Configure to go in 125Khz listen mode + LFSetupFPGAForADC(95, true); + while(!BUTTON_PRESS()) { - - // Configure to go in 125Khz listen mode - LFSetupFPGAForADC(0, true); - WDT_HIT(); if (ledcontrol) LED_A_ON(); - DoAcquisition125k_internal(-1,true); size = sizeof(BigBuf); // FSK demodulator size = fsk_demod(dest, size); - WDT_HIT(); - // we now have a set of cycle counts, loop over previous results and aggregate data into bit patterns - // 1->0 : fc/8 in sets of 7 - // 0->1 : fc/10 in sets of 6 - size = aggregate_bits(dest, size, 7,6,13); - + // 1->0 : fc/8 in sets of 7 (RF/64 / 8 = 8) + // 0->1 : fc/10 in sets of 6 (RF/64 / 10 = 6.4) + size = aggregate_bits(dest, size, 7,6,13,1); //13 max Consecutive should be ok as most 0s in row should be 10 for init seq - invert bits WDT_HIT(); - + //Index map + //0 10 20 30 40 50 60 + //| | | | | | | + //01234567 8 90123456 7 89012345 6 78901234 5 67890123 4 56789012 3 45678901 23 + //----------------------------------------------------------------------------- + //00000000 0 11110000 1 facility 1 version* 1 code*one 1 code*two 1 ???????? 11 + // + //XSF(version)facility:codeone+codetwo //Handle the data uint8_t mask[] = {0,0,0,0,0,0,0,0,0,1}; - for( idx=0; idx < size - 64; idx++) { - - if ( memcmp(dest + idx, mask, sizeof(mask)) ) continue; - - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx], dest[idx+1], dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+8], dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+16],dest[idx+17],dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+24],dest[idx+25],dest[idx+26],dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35],dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44],dest[idx+45],dest[idx+46],dest[idx+47]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53],dest[idx+54],dest[idx+55]); - Dbprintf("%d%d%d%d%d%d%d%d",dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]); - - code = bytebits_to_byte(dest+idx,32); - code2 = bytebits_to_byte(dest+idx+32,32); - - short version = bytebits_to_byte(dest+idx+14,4); - char unknown = bytebits_to_byte(dest+idx+19,8) ; - uint16_t number = bytebits_to_byte(dest+idx+36,9); - - Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,unknown,number,code,code2); - if (ledcontrol) LED_D_OFF(); - - // if we're only looking for one tag - if (findone){ - LED_A_OFF(); - return; + for( idx=0; idx < (size - 64); idx++) { + if ( memcmp(dest + idx, mask, sizeof(mask))==0) { + //frame marker found + if(findone){ //only print binary if we are doing one + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx], dest[idx+1], dest[idx+2],dest[idx+3],dest[idx+4],dest[idx+5],dest[idx+6],dest[idx+7],dest[idx+8]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+9], dest[idx+10],dest[idx+11],dest[idx+12],dest[idx+13],dest[idx+14],dest[idx+15],dest[idx+16],dest[idx+17]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+18],dest[idx+19],dest[idx+20],dest[idx+21],dest[idx+22],dest[idx+23],dest[idx+24],dest[idx+25],dest[idx+26]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+27],dest[idx+28],dest[idx+29],dest[idx+30],dest[idx+31],dest[idx+32],dest[idx+33],dest[idx+34],dest[idx+35]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+36],dest[idx+37],dest[idx+38],dest[idx+39],dest[idx+40],dest[idx+41],dest[idx+42],dest[idx+43],dest[idx+44]); + Dbprintf("%d%d%d%d%d%d%d%d %d",dest[idx+45],dest[idx+46],dest[idx+47],dest[idx+48],dest[idx+49],dest[idx+50],dest[idx+51],dest[idx+52],dest[idx+53]); + Dbprintf("%d%d%d%d%d%d%d%d %d%d",dest[idx+54],dest[idx+55],dest[idx+56],dest[idx+57],dest[idx+58],dest[idx+59],dest[idx+60],dest[idx+61],dest[idx+62],dest[idx+63]); + } + code = bytebits_to_byte(dest+idx,32); + code2 = bytebits_to_byte(dest+idx+32,32); + short version = bytebits_to_byte(dest+idx+28,8); //14,4 + char facilitycode = bytebits_to_byte(dest+idx+19,8) ; + uint16_t number = (bytebits_to_byte(dest+idx+37,8)<<8)|(bytebits_to_byte(dest+idx+46,8)); //36,9 + + Dbprintf("XSF(%02d)%02x:%d (%08x%08x)",version,facilitycode,number,code,code2); + // if we're only looking for one tag + if (findone){ + if (ledcontrol) LED_A_OFF(); + //LED_A_OFF(); + return; + } } } WDT_HIT(); @@ -950,7 +996,8 @@ void T55xxWriteBit(int bit) // Write one card block in page 0, no lock void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMode) { - unsigned int i; + //unsigned int i; //enio adjustment 12/10/14 + uint32_t i; FpgaDownloadAndGo(FPGA_BITSTREAM_LF); FpgaSendCommand(FPGA_CMD_SET_DIVISOR, 95); //125Khz @@ -995,8 +1042,8 @@ void T55xxWriteBlock(uint32_t Data, uint32_t Block, uint32_t Pwd, uint8_t PwdMod void T55xxReadBlock(uint32_t Block, uint32_t Pwd, uint8_t PwdMode) { uint8_t *dest = (uint8_t *)BigBuf; - int m=0, i=0; - + //int m=0, i=0; //enio adjustment 12/10/14 + uint32_t m=0, i=0; FpgaDownloadAndGo(FPGA_BITSTREAM_LF); m = sizeof(BigBuf); // Clear destination buffer before sending the command @@ -1456,78 +1503,81 @@ int DemodPCF7931(uint8_t **outBlocks) { for (bitidx = 0; i < GraphTraceLen; i++) { - if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin)) - { - lc = i - lastval; - lastval = i; - - // Switch depending on lc length: - // Tolerance is 1/8 of clock rate (arbitrary) - if (abs(lc-clock/4) < tolerance) { - // 16T0 - if((i - pmc) == lc) { /* 16T0 was previous one */ - /* It's a PMC ! */ - i += (128+127+16+32+33+16)-1; - lastval = i; - pmc = 0; - block_done = 1; - } - else { - pmc = i; - } - } else if (abs(lc-clock/2) < tolerance) { - // 32TO - if((i - pmc) == lc) { /* 16T0 was previous one */ - /* It's a PMC ! */ - i += (128+127+16+32+33)-1; - lastval = i; - pmc = 0; - block_done = 1; - } - else if(half_switch == 1) { - BitStream[bitidx++] = 0; - half_switch = 0; - } - else - half_switch++; - } else if (abs(lc-clock) < tolerance) { - // 64TO - BitStream[bitidx++] = 1; - } else { - // Error - warnings++; - if (warnings > 10) - { - Dbprintf("Error: too many detection errors, aborting."); - return 0; - } - } - - if(block_done == 1) { - if(bitidx == 128) { - for(j=0; j<16; j++) { - Blocks[num_blocks][j] = 128*BitStream[j*8+7]+ - 64*BitStream[j*8+6]+ - 32*BitStream[j*8+5]+ - 16*BitStream[j*8+4]+ - 8*BitStream[j*8+3]+ - 4*BitStream[j*8+2]+ - 2*BitStream[j*8+1]+ - BitStream[j*8]; - } - num_blocks++; - } - bitidx = 0; - block_done = 0; - half_switch = 0; - } - if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0; - else dir = 1; - } - if(bitidx==255) - bitidx=0; - warnings = 0; - if(num_blocks == 4) break; + if ( (GraphBuffer[i-1] > GraphBuffer[i] && dir == 1 && GraphBuffer[i] > lmax) || (GraphBuffer[i-1] < GraphBuffer[i] && dir == 0 && GraphBuffer[i] < lmin)) + { + lc = i - lastval; + lastval = i; + + // Switch depending on lc length: + // Tolerance is 1/8 of clock rate (arbitrary) + if (abs(lc-clock/4) < tolerance) { + // 16T0 + if((i - pmc) == lc) { /* 16T0 was previous one */ + /* It's a PMC ! */ + i += (128+127+16+32+33+16)-1; + lastval = i; + pmc = 0; + block_done = 1; + } + else { + pmc = i; + } + } else if (abs(lc-clock/2) < tolerance) { + // 32TO + if((i - pmc) == lc) { /* 16T0 was previous one */ + /* It's a PMC ! */ + i += (128+127+16+32+33)-1; + lastval = i; + pmc = 0; + block_done = 1; + } + else if(half_switch == 1) { + BitStream[bitidx++] = 0; + half_switch = 0; + } + else + half_switch++; + } else if (abs(lc-clock) < tolerance) { + // 64TO + BitStream[bitidx++] = 1; + } else { + // Error + warnings++; + if (warnings > 10) + { + Dbprintf("Error: too many detection errors, aborting."); + return 0; + } + } + + if(block_done == 1) { + if(bitidx == 128) { + for(j=0; j<16; j++) { + Blocks[num_blocks][j] = 128*BitStream[j*8+7]+ + 64*BitStream[j*8+6]+ + 32*BitStream[j*8+5]+ + 16*BitStream[j*8+4]+ + 8*BitStream[j*8+3]+ + 4*BitStream[j*8+2]+ + 2*BitStream[j*8+1]+ + BitStream[j*8]; + } + num_blocks++; + } + bitidx = 0; + block_done = 0; + half_switch = 0; + } + if(i < GraphTraceLen) + { + if (GraphBuffer[i-1] > GraphBuffer[i]) dir=0; + else dir = 1; + } + } + if(bitidx==255) + bitidx=0; + warnings = 0; + if(num_blocks == 4) break; } memcpy(outBlocks, Blocks, 16*num_blocks); return num_blocks;