X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/aa41c6058a4c5768d524a711af846f43ca7a236c..6a1f2d82bb7d33cd49f9c191f36144ca10d5b629:/armsrc/iclass.c diff --git a/armsrc/iclass.c b/armsrc/iclass.c index 9d31cd73..061336a7 100644 --- a/armsrc/iclass.c +++ b/armsrc/iclass.c @@ -71,14 +71,13 @@ static struct { int nOutOfCnt; int OutOfCnt; int syncBit; - int parityBits; int samples; int highCnt; int swapper; int counter; int bitBuffer; int dropPosition; - uint8_t *output; + uint8_t *output; } Uart; static RAMFUNC int OutOfNDecoding(int bit) @@ -137,11 +136,8 @@ static RAMFUNC int OutOfNDecoding(int bit) if(Uart.byteCnt == 0) { // Its not straightforward to show single EOFs // So just leave it and do not return TRUE - Uart.output[Uart.byteCnt] = 0xf0; + Uart.output[0] = 0xf0; Uart.byteCnt++; - - // Calculate the parity bit for the client... - Uart.parityBits = 1; } else { return TRUE; @@ -223,11 +219,6 @@ static RAMFUNC int OutOfNDecoding(int bit) if(Uart.bitCnt == 8) { Uart.output[Uart.byteCnt] = (Uart.shiftReg & 0xff); Uart.byteCnt++; - - // Calculate the parity bit for the client... - Uart.parityBits <<= 1; - Uart.parityBits ^= OddByteParity[(Uart.shiftReg & 0xff)]; - Uart.bitCnt = 0; Uart.shiftReg = 0; } @@ -246,11 +237,6 @@ static RAMFUNC int OutOfNDecoding(int bit) Uart.dropPosition--; Uart.output[Uart.byteCnt] = (Uart.dropPosition & 0xff); Uart.byteCnt++; - - // Calculate the parity bit for the client... - Uart.parityBits <<= 1; - Uart.parityBits ^= OddByteParity[(Uart.dropPosition & 0xff)]; - Uart.bitCnt = 0; Uart.shiftReg = 0; Uart.nOutOfCnt = 0; @@ -311,7 +297,6 @@ static RAMFUNC int OutOfNDecoding(int bit) Uart.state = STATE_START_OF_COMMUNICATION; Uart.bitCnt = 0; Uart.byteCnt = 0; - Uart.parityBits = 0; Uart.nOutOfCnt = 0; Uart.OutOfCnt = 4; // Start at 1/4, could switch to 1/256 Uart.dropPosition = 0; @@ -353,7 +338,6 @@ static struct { int bitCount; int posCount; int syncBit; - int parityBits; uint16_t shiftReg; int buffer; int buffer2; @@ -367,7 +351,7 @@ static struct { SUB_SECOND_HALF, SUB_BOTH } sub; - uint8_t *output; + uint8_t *output; } Demod; static RAMFUNC int ManchesterDecoding(int v) @@ -420,7 +404,6 @@ static RAMFUNC int ManchesterDecoding(int v) Demod.sub = SUB_FIRST_HALF; Demod.bitCount = 0; Demod.shiftReg = 0; - Demod.parityBits = 0; Demod.samples = 0; if(Demod.posCount) { //if(trigger) LED_A_OFF(); // Not useful in this case... @@ -485,8 +468,6 @@ static RAMFUNC int ManchesterDecoding(int v) if(Demod.state == DEMOD_SOF_COMPLETE) { Demod.output[Demod.len] = 0x0f; Demod.len++; - Demod.parityBits <<= 1; - Demod.parityBits ^= OddByteParity[0x0f]; Demod.state = DEMOD_UNSYNCD; // error = 0x0f; return TRUE; @@ -567,11 +548,9 @@ static RAMFUNC int ManchesterDecoding(int v) // Tag response does not need to be a complete byte! if(Demod.len > 0 || Demod.bitCount > 0) { if(Demod.bitCount > 1) { // was > 0, do not interpret last closing bit, is part of EOF - Demod.shiftReg >>= (9 - Demod.bitCount); + Demod.shiftReg >>= (9 - Demod.bitCount); // right align data Demod.output[Demod.len] = Demod.shiftReg & 0xff; Demod.len++; - // No parity bit, so just shift a 0 - Demod.parityBits <<= 1; } Demod.state = DEMOD_UNSYNCD; @@ -608,11 +587,6 @@ static RAMFUNC int ManchesterDecoding(int v) Demod.shiftReg >>= 1; Demod.output[Demod.len] = (Demod.shiftReg & 0xff); Demod.len++; - - // FOR ISO15639 PARITY NOT SEND OTA, JUST CALCULATE IT FOR THE CLIENT - Demod.parityBits <<= 1; - Demod.parityBits ^= OddByteParity[(Demod.shiftReg & 0xff)]; - Demod.bitCount = 0; Demod.shiftReg = 0; } @@ -669,8 +643,8 @@ void RAMFUNC SnoopIClass(void) // So 32 should be enough! uint8_t *readerToTagCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); // The response (tag -> reader) that we're receiving. - uint8_t *tagToReaderResponse = (((uint8_t *)BigBuf) + RECV_RES_OFFSET); - + uint8_t *tagToReaderResponse = (((uint8_t *)BigBuf) + RECV_RESP_OFFSET); + FpgaDownloadAndGo(FPGA_BITSTREAM_HF); // reset traceLen to 0 @@ -769,10 +743,10 @@ void RAMFUNC SnoopIClass(void) //if(!LogTrace(Uart.output,Uart.byteCnt, rsamples, Uart.parityBits,TRUE)) break; //if(!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, TRUE)) break; - if(tracing) - { - LogTrace(Uart.output,Uart.byteCnt, (GetCountSspClk()-time_0) << 4, Uart.parityBits,TRUE); - LogTrace(NULL, 0, (GetCountSspClk()-time_0) << 4, 0, TRUE); + if(tracing) { + uint8_t parity[MAX_PARITY_SIZE]; + GetParity(Uart.output, Uart.byteCnt, parity); + LogTrace(Uart.output,Uart.byteCnt, (GetCountSspClk()-time_0) << 4, (GetCountSspClk()-time_0) << 4, parity, TRUE); } @@ -793,10 +767,10 @@ void RAMFUNC SnoopIClass(void) rsamples = samples - Demod.samples; LED_B_ON(); - if(tracing) - { - LogTrace(Demod.output,Demod.len, (GetCountSspClk()-time_0) << 4 , Demod.parityBits,FALSE); - LogTrace(NULL, 0, (GetCountSspClk()-time_0) << 4, 0, FALSE); + if(tracing) { + uint8_t parity[MAX_PARITY_SIZE]; + GetParity(Demod.output, Demod.len, parity); + LogTrace(Demod.output, Demod.len, (GetCountSspClk()-time_0) << 4, (GetCountSspClk()-time_0) << 4, parity, FALSE); } @@ -1079,7 +1053,7 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader // + 1720.. uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); - memset(receivedCmd, 0x44, RECV_CMD_SIZE); + memset(receivedCmd, 0x44, MAX_FRAME_SIZE); int len; // Prepare card messages @@ -1219,14 +1193,13 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader } if (tracing) { - LogTrace(receivedCmd,len, (r2t_time-time_0)<< 4, Uart.parityBits,TRUE); - LogTrace(NULL,0, (r2t_time-time_0) << 4, 0,TRUE); + uint8_t parity[MAX_PARITY_SIZE]; + GetParity(receivedCmd, len, parity); + LogTrace(receivedCmd,len, (r2t_time-time_0)<< 4, (r2t_time-time_0) << 4, parity, TRUE); if (respdata != NULL) { - LogTrace(respdata,respsize, (t2r_time-time_0) << 4,SwapBits(GetParity(respdata,respsize),respsize),FALSE); - LogTrace(NULL,0, (t2r_time-time_0) << 4,0,FALSE); - - + GetParity(respdata, respsize, parity); + LogTrace(respdata, respsize, (t2r_time-time_0) << 4, (t2r_time-time_0) << 4, parity, FALSE); } if(!tracing) { DbpString("Trace full"); @@ -1234,7 +1207,7 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader } } - memset(receivedCmd, 0x44, RECV_CMD_SIZE); + memset(receivedCmd, 0x44, MAX_FRAME_SIZE); } //Dbprintf("%x", cmdsRecvd); @@ -1295,20 +1268,23 @@ static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int FpgaSetupSsc(); if (wait) - if(*wait < 10) - *wait = 10; + { + if(*wait < 10) *wait = 10; + + for(c = 0; c < *wait;) { + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { + AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing! + c++; + } + if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { + volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; + (void)r; + } + WDT_HIT(); + } + + } - for(c = 0; c < *wait;) { - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { - AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing! - c++; - } - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR; - (void)r; - } - WDT_HIT(); - } uint8_t sendbyte; bool firstpart = TRUE; @@ -1388,21 +1364,24 @@ void CodeIClassCommand(const uint8_t * cmd, int len) void ReaderTransmitIClass(uint8_t* frame, int len) { - int wait = 0; - int samples = 0; - int par = 0; - - // This is tied to other size changes - // uint8_t* frame_addr = ((uint8_t*)BigBuf) + 2024; - CodeIClassCommand(frame,len); - - // Select the card - TransmitIClassCommand(ToSend, ToSendMax, &samples, &wait); - if(trigger) - LED_A_ON(); - - // Store reader command in buffer - if (tracing) LogTrace(frame,len,rsamples,par,TRUE); + int wait = 0; + int samples = 0; + + // This is tied to other size changes + // uint8_t* frame_addr = ((uint8_t*)BigBuf) + 2024; + CodeIClassCommand(frame,len); + + // Select the card + TransmitIClassCommand(ToSend, ToSendMax, &samples, &wait); + if(trigger) + LED_A_ON(); + + // Store reader command in buffer + if (tracing) { + uint8_t par[MAX_PARITY_SIZE]; + GetParity(frame, len, par); + LogTrace(frame, len, rsamples, rsamples, par, TRUE); + } } //----------------------------------------------------------------------------- @@ -1461,7 +1440,11 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer) int samples = 0; if (!GetIClassAnswer(receivedAnswer,160,&samples,0)) return FALSE; rsamples += samples; - if (tracing) LogTrace(receivedAnswer,Demod.len,rsamples,Demod.parityBits,FALSE); + if (tracing) { + uint8_t parity[MAX_PARITY_SIZE]; + GetParity(receivedAnswer, Demod.len, parity); + LogTrace(receivedAnswer,Demod.len,rsamples,rsamples,parity,FALSE); + } if(samples == 0) return FALSE; return Demod.len; } @@ -1501,9 +1484,8 @@ void ReaderIClass(uint8_t arg0) { uint8_t card_data[24]={0}; uint8_t last_csn[8]={0}; - uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes - FpgaDownloadAndGo(FPGA_BITSTREAM_HF); - + uint8_t *resp = (((uint8_t *)BigBuf) + RECV_RESP_OFFSET); + int read_status= 0; bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE; @@ -1593,29 +1575,10 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) { int keyaccess; } memory; - uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes - // Enable and clear the trace - iso14a_set_tracing(TRUE); - iso14a_clear_trace(); - - - - // Setup SSC - FpgaSetupSsc(); - // Start from off (no field generated) - // Signal field is off with the appropriate LED - LED_D_OFF(); - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - SpinDelay(200); - - SetAdcMuxFor(GPIO_MUXSEL_HIPKD); - - // Now give it time to spin up. - // Signal field is on with the appropriate LED - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD); - SpinDelay(200); + uint8_t* resp = (((uint8_t *)BigBuf) + RECV_RESP_OFFSET); + + setupIclassReader(); - LED_A_ON(); for(int i=0;i<1;i++) { @@ -1654,8 +1617,8 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) { Dbprintf("Authenticate"); //for now replay captured auth (as cc not updated) memcpy(check+5,MAC,4); - Dbprintf(" AA: %02x %02x %02x %02x", - check[5], check[6], check[7],check[8]); + //Dbprintf(" AA: %02x %02x %02x %02x", + // check[5], check[6], check[7],check[8]); ReaderTransmitIClass(check, sizeof(check)); if(ReaderReceiveIClass(resp) == 4) { Dbprintf(" AR: %02x %02x %02x %02x", @@ -1731,7 +1694,7 @@ void IClass_iso14443A_write(uint8_t arg0, uint8_t blockNo, uint8_t *data, uint8_ uint16_t crc = 0; - uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes + uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // Reset trace buffer memset(trace, 0x44, RECV_CMD_OFFSET);