mirror of
https://github.com/RfidResearchGroup/proxmark3.git
synced 2025-02-15 11:43:14 +08:00
CHG: added some more debugstatements,
CHG: 'hf iclass sim 2' use another e-purse value {0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff}
CHG: testing to see if we can skip the parity array when logging, we don't seem to use that information anywere anyway.
CHG: no need to check tracing global var, it is done inside of LogTrace function anyway
This commit is contained in:
iceman1001
parent
269b89373d
commit
a7441c4bf6
1 changed files with 209 additions and 177 deletions
386
armsrc/iclass.c
386
armsrc/iclass.c
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@ -109,14 +109,14 @@ static RAMFUNC int OutOfNDecoding(int bit) {
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Uart.posCnt++;
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if ((Uart.bitBuffer & Uart.syncBit) ^ Uart.syncBit)
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bit = 0x00;
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bit = 0;
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else
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bit = 0x01;
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bit = 1;
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if (((Uart.bitBuffer << 1) & Uart.syncBit) ^ Uart.syncBit)
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bitright = 0x00;
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bitright = 0;
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else
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bitright = 0x01;
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bitright = 1;
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if(bit != bitright)
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bit = bitright;
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@ -167,9 +167,7 @@ static RAMFUNC int OutOfNDecoding(int bit) {
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Uart.dropPosition = Uart.nOutOfCnt;
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}
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}
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Uart.posCnt = 0;
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if (Uart.nOutOfCnt == Uart.OutOfCnt && Uart.OutOfCnt == 4) {
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Uart.nOutOfCnt = 0;
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@ -595,18 +593,20 @@ void RAMFUNC SnoopIClass(void) {
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FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
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// Setup for the DMA.
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FpgaSetupSsc();
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SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
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// free all BigBuf memory
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BigBuf_free();
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clear_trace();
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set_tracing(true);
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iso14a_set_trigger(false);
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// We won't start recording the frames that we acquire until we trigger;
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// a good trigger condition to get started is probably when we see a
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// response from the tag.
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//int triggered = false; // false to wait first for card
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// The command (reader -> tag) that we're receiving.
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// The length of a received command will in most cases be no more than 18 bytes.
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@ -619,11 +619,10 @@ void RAMFUNC SnoopIClass(void) {
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// The DMA buffer, used to stream samples from the FPGA
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uint8_t *dmaBuf = BigBuf_malloc(DMA_BUFFER_SIZE);
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uint8_t *upTo = dmaBuf;
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uint8_t *upTo;
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int lastRxCounter;
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int smpl;
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int maxBehindBy = 0;
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int lastRxCounter = DMA_BUFFER_SIZE;
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int smpl, maxBehindBy = 0;
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// Count of samples received so far, so that we can include timing
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// information in the trace buffer.
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@ -637,10 +636,6 @@ void RAMFUNC SnoopIClass(void) {
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Demod.len = 0;
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Demod.state = DEMOD_UNSYNCD;
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// Setup for the DMA.
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FpgaSetupSsc();
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upTo = dmaBuf;
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lastRxCounter = DMA_BUFFER_SIZE;
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// Setup and start DMA.
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if ( !FpgaSetupSscDma((uint8_t*) dmaBuf, DMA_BUFFER_SIZE) ){
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if (MF_DBGLEVEL > 1) Dbprintf("FpgaSetupSscDma failed. Exiting");
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@ -656,22 +651,19 @@ void RAMFUNC SnoopIClass(void) {
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// And put the FPGA in the appropriate mode
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// Signal field is off with the appropriate LED
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LED_D_OFF();
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FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_SNIFFER);
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SpinDelay(20);
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SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
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uint32_t time_0 = GetCountSspClk();
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uint32_t time_start = 0, time_stop = 0;
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int div = 0;
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//int div2 = 0;
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int decbyte = 0;
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int decbyter = 0;
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int div = 0, decbyte = 0, decbyter = 0;
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// And now we loop, receiving samples.
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for(;;) {
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LED_A_ON();
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WDT_HIT();
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LED_A_ON();
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int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) & (DMA_BUFFER_SIZE-1);
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if ( behindBy > maxBehindBy) {
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@ -715,11 +707,9 @@ void RAMFUNC SnoopIClass(void) {
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//if(!LogTrace(Uart.output,Uart.byteCnt, rsamples, Uart.parityBits,true)) break;
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//if(!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, true)) break;
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if (tracing) {
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uint8_t parity[MAX_PARITY_SIZE];
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GetParity(Uart.output, Uart.byteCnt, parity);
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LogTrace(Uart.output,Uart.byteCnt, time_start, time_stop, parity, true);
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}
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uint8_t parity[Uart.byteCnt/8];
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GetParity(Uart.output, Uart.byteCnt, parity);
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LogTrace(Uart.output, Uart.byteCnt, time_start, time_stop, parity, true);
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/* And ready to receive another command. */
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Uart.state = STATE_UNSYNCD;
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@ -742,11 +732,9 @@ void RAMFUNC SnoopIClass(void) {
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rsamples = samples - Demod.samples;
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LED_B_ON();
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if (tracing) {
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uint8_t parity[MAX_PARITY_SIZE];
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GetParity(Demod.output, Demod.len, parity);
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LogTrace(Demod.output, Demod.len, time_start, time_stop, parity, false);
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}
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uint8_t parity[Demod.len/8];
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GetParity(Demod.output, Demod.len, parity);
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LogTrace(Demod.output, Demod.len, time_start, time_stop, parity, false);
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// And ready to receive another response.
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memset(&Demod, 0, sizeof(Demod));
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@ -754,7 +742,7 @@ void RAMFUNC SnoopIClass(void) {
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Demod.state = DEMOD_UNSYNCD;
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LED_C_OFF();
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} else {
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time_start = (GetCountSspClk()-time_0) << 4;
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time_start = (GetCountSspClk() - time_0) << 4;
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}
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div = 0;
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@ -792,28 +780,30 @@ void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) {
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// Stop when button is pressed
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// Or return TRUE when command is captured
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//-----------------------------------------------------------------------------
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static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen) {
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// Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen
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// only, since we are receiving, not transmitting).
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// Signal field is off with the appropriate LED
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LED_D_OFF();
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FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
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static bool GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen) {
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// Now run a `software UART' on the stream of incoming samples.
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Uart.output = received;
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Uart.byteCntMax = maxLen;
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Uart.state = STATE_UNSYNCD;
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for(;;) {
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// Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen
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// only, since we are receiving, not transmitting).
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// Signal field is off with the appropriate LED
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LED_D_OFF();
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FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
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// clear RXRDY:
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uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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while (!BUTTON_PRESS()) {
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WDT_HIT();
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if (BUTTON_PRESS()) return false;
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// if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY))
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// AT91C_BASE_SSC->SSC_THR = 0x00;
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if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
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AT91C_BASE_SSC->SSC_THR = 0x00;
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}
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if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
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uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
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if (OutOfNDecoding(b & 0x0f)) {
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*len = Uart.byteCnt;
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@ -821,14 +811,16 @@ static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen) {
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}
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}
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}
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return false;
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}
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static uint8_t encode4Bits(const uint8_t b) {
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// OTA, the least significant bits first
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// Manchester encoding added
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// The columns are
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// 1 - Bit value to send
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// 2 - Reversed (big-endian)
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// 3 - Encoded
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// 3 - Machester Encoded
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// 4 - Hex values
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uint8_t c = b & 0xF;
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@ -883,10 +875,11 @@ static void CodeIClassTagAnswer(const uint8_t *cmd, int len) {
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* - A 1-bit input to the FPGA becomes 8 pulses on 423.5kHz (fc/32) (18.88us).
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* - A 0-bit input to the FPGA becomes an unmodulated time of 18.88us
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*
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* In this mode the SOF can be written as 00011101 = 0x1D
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* The EOF can be written as 10111000 = 0xb8
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* A logic 1 is 01
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* A logic 0 is 10
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* In this mode
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* SOF can be written as 00011101 = 0x1D
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* EOF can be written as 10111000 = 0xb8
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* logic 1 be written as 01 = 0x1
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* logic 0 be written as 10 = 0x2
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*
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* */
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ToSendReset();
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@ -897,8 +890,8 @@ static void CodeIClassTagAnswer(const uint8_t *cmd, int len) {
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int i;
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for(i = 0; i < len; i++) {
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uint8_t b = cmd[i];
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ToSend[++ToSendMax] = encode4Bits(b & 0xF); //Least significant half
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ToSend[++ToSendMax] = encode4Bits((b >> 4) & 0xF);//Most significant half
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ToSend[++ToSendMax] = encode4Bits(b & 0xF); // least significant half
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ToSend[++ToSendMax] = encode4Bits((b >> 4) & 0xF); // most significant half
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}
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// Send EOF
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@ -936,29 +929,34 @@ static void CodeIClassTagSOF() {
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*/
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// turn off afterwards
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void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain) {
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uint32_t simType = arg0;
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uint32_t numberOfCSNS = arg1;
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// this will clear out bigbuf memory ...
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FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
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FpgaSetupSsc();
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SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
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// Enable and clear the trace
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clear_trace();
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set_tracing(true);
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uint32_t simType = arg0;
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uint32_t numberOfCSNS = arg1;
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//Use the emulator memory for SIM
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uint8_t *emulator = BigBuf_get_EM_addr();
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if (simType == 0) {
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// Use the CSN from commandline
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memcpy(emulator, datain, 8);
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doIClassSimulation(MODE_SIM_CSN,NULL);
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doIClassSimulation(MODE_SIM_CSN, NULL);
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} else if (simType == 1) {
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//Default CSN
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uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };
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// Use the CSN from commandline
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memcpy(emulator, csn_crc, 8);
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doIClassSimulation(MODE_SIM_CSN,NULL);
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doIClassSimulation(MODE_SIM_CSN, NULL);
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} else if (simType == 2) {
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uint8_t mac_responses[USB_CMD_DATA_SIZE] = { 0 };
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@ -1017,7 +1015,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
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Dbprintf("Simulating CSN %02x%02x%02x%02x%02x%02x%02x%02x", csn[0], csn[1], csn[2], csn[3], csn[4], csn[5], csn[6], csn[7]);
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// Construct anticollision-CSN
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rotateCSN(csn_data,anticoll_data);
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rotateCSN(csn_data, anticoll_data);
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// Compute CRC on both CSNs
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ComputeCrc14443(CRC_ICLASS, anticoll_data, 8, &anticoll_data[8], &anticoll_data[9]);
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@ -1025,7 +1023,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
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uint8_t diversified_key[8] = { 0 };
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// e-Purse
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uint8_t card_challenge_data[8] = { 0x00 };
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uint8_t card_challenge_data[8] = { 0xfe,0xff,0xff,0xff,0xff,0xff,0xff,0xff };
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if (simulationMode == MODE_FULLSIM) {
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//The diversified key should be stored on block 3
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//Get the diversified key from emulator memory
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@ -1069,8 +1067,15 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
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uint8_t *resp_cc = BigBuf_malloc(20);
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int resp_cc_len;
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// Application Issuer Area
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uint8_t *resp_aia = BigBuf_malloc(20);
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int resp_aia_len;
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uint8_t aia_data[10] = {0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0xFF,0x00,0x00};
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ComputeCrc14443(CRC_ICLASS, aia_data, 8, &aia_data[8], &aia_data[9]);
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// receive command
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uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
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int len;
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int len = 0;
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// Prepare card messages
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ToSendMax = 0;
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@ -1078,22 +1083,32 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
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// First card answer: SOF
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CodeIClassTagSOF();
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memcpy(resp_sof, ToSend, ToSendMax); resp_sof_Len = ToSendMax;
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DbpString("SOF"); PrintToSendBuffer();
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// Anticollision CSN
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CodeIClassTagAnswer(anticoll_data, sizeof(anticoll_data));
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memcpy(resp_anticoll, ToSend, ToSendMax); resp_anticoll_len = ToSendMax;
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DbpString("ANTI COLL CSN"); PrintToSendBuffer();
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// CSN
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CodeIClassTagAnswer(csn_data, sizeof(csn_data));
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memcpy(resp_csn, ToSend, ToSendMax); resp_csn_len = ToSendMax;
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DbpString("CSN"); PrintToSendBuffer();
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// e-Purse
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CodeIClassTagAnswer(card_challenge_data, sizeof(card_challenge_data));
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memcpy(resp_cc, ToSend, ToSendMax); resp_cc_len = ToSendMax;
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DbpString("e-Purse"); PrintToSendBuffer();
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// Application Issuer Area
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CodeIClassTagAnswer(aia_data, sizeof(aia_data));
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memcpy(resp_aia, ToSend, ToSendMax); resp_aia_len = ToSendMax;
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DbpString("Application Issuer Data"); PrintToSendBuffer();
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//This is used for responding to READ-block commands or other data which is dynamically generated
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//First the 'trace'-data, not encoded for FPGA
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uint8_t *data_generic_trace = BigBuf_malloc(8 + 2);//8 bytes data + 2byte CRC is max tag answer
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//Then storage for the modulated data
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//Each bit is doubled when modulated for FPGA, and we also have SOF and EOF (2 bytes)
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uint8_t *data_response = BigBuf_malloc( (8+2) * 2 + 2);
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@ -1103,11 +1118,9 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
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//SpinDelay(200);
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FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);
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SpinDelay(20);
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//SpinDelay(20);
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StartCountSspClk();
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// We need to listen to the high-frequency, peak-detected path.
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SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
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FpgaSetupSsc();
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// To control where we are in the protocol
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int cmdsRecvd = 0;
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@ -1118,50 +1131,52 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
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bool buttonPressed = false;
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uint8_t response_delay = 1;
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while (!exitLoop) {
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WDT_HIT();
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response_delay = 1;
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LED_B_OFF();
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//Signal tracer
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// Can be used to get a trigger for an oscilloscope..
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LED_C_OFF();
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//Signal tracer, can be used to get a trigger for an oscilloscope..
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LED_B_OFF(); LED_C_OFF();
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if (!GetIClassCommandFromReader(receivedCmd, &len, 100)) {
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buttonPressed = true;
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exitLoop = true;
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continue;
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}
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r2t_time = GetCountSspClk();
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//Signal tracer
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LED_C_ON();
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// Okay, look at the command now.
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if (receivedCmd[0] == ICLASS_CMD_ACTALL ) {
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if (receivedCmd[0] == ICLASS_CMD_ACTALL ) { // 0x0A
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// Reader in anticollission phase
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modulated_response = resp_sof; modulated_response_size = resp_sof_Len; //order = 1;
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trace_data = sof_data;
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trace_data_size = sizeof(sof_data);
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} else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) {
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} else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) { // 0x0C
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// Reader asks for anticollission CSN
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modulated_response = resp_anticoll; modulated_response_size = resp_anticoll_len; //order = 2;
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trace_data = anticoll_data;
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trace_data_size = sizeof(anticoll_data);
|
||||
//DbpString("Reader requests anticollission CSN:");
|
||||
} else if (receivedCmd[0] == ICLASS_CMD_SELECT) {
|
||||
} else if (receivedCmd[0] == ICLASS_CMD_SELECT) { // 0x81
|
||||
// Reader selects anticollission CSN.
|
||||
// Tag sends the corresponding real CSN
|
||||
modulated_response = resp_csn; modulated_response_size = resp_csn_len; //order = 3;
|
||||
trace_data = csn_data;
|
||||
trace_data_size = sizeof(csn_data);
|
||||
//DbpString("Reader selects anticollission CSN:");
|
||||
} else if (receivedCmd[0] == ICLASS_CMD_READCHECK_KD) {
|
||||
} else if (receivedCmd[0] == ICLASS_CMD_READCHECK_KD) { // 0x88
|
||||
// Read e-purse (88 02)
|
||||
modulated_response = resp_cc; modulated_response_size = resp_cc_len; //order = 4;
|
||||
trace_data = card_challenge_data;
|
||||
trace_data_size = sizeof(card_challenge_data);
|
||||
LED_B_ON();
|
||||
} else if (receivedCmd[0] == ICLASS_CMD_CHECK) {
|
||||
} else if (receivedCmd[0] == ICLASS_CMD_CHECK) { // 0x05
|
||||
// Reader random and reader MAC!!!
|
||||
if(simulationMode == MODE_FULLSIM)
|
||||
{
|
||||
if(simulationMode == MODE_FULLSIM) {
|
||||
//NR, from reader, is in receivedCmd +1
|
||||
opt_doTagMAC_2(cipher_state,receivedCmd+1,data_generic_trace,diversified_key);
|
||||
|
||||
|
|
@ -1180,7 +1195,7 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
|
|||
trace_data = NULL;
|
||||
trace_data_size = 0;
|
||||
|
||||
if (simulationMode == MODE_EXIT_AFTER_MAC){
|
||||
if (simulationMode == MODE_EXIT_AFTER_MAC) {
|
||||
// dbprintf:ing ...
|
||||
Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x"
|
||||
,csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);
|
||||
|
|
@ -1201,6 +1216,19 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
|
|||
modulated_response = resp_sof; modulated_response_size = 0; //order = 0;
|
||||
trace_data = NULL;
|
||||
trace_data_size = 0;
|
||||
|
||||
// (iceman) Special case for testing in SIM 2 attack mode.
|
||||
// hence the ridiculous if statement.. (MY TESTING PURPOSES)
|
||||
} else if ( simulationMode == MODE_EXIT_AFTER_MAC &&
|
||||
receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY &&
|
||||
receivedCmd[1] == 0x05 &&
|
||||
len == 4) {
|
||||
// some readers likes the Application Issuer Area
|
||||
// Read Application Issuer Area (0c 05)
|
||||
modulated_response = resp_aia; modulated_response_size = resp_aia_len;
|
||||
trace_data = aia_data;
|
||||
trace_data_size = sizeof(aia_data);
|
||||
|
||||
} else if (simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){
|
||||
//Read block
|
||||
uint16_t blk = receivedCmd[1];
|
||||
|
|
@ -1230,16 +1258,17 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
|
|||
memcpy(data_response, ToSend, ToSendMax);
|
||||
modulated_response = data_response;
|
||||
modulated_response_size = ToSendMax;
|
||||
} else if(receivedCmd[0] == ICLASS_CMD_PAGESEL) {
|
||||
} else if(receivedCmd[0] == ICLASS_CMD_PAGESEL) { // 0x84
|
||||
//Pagesel
|
||||
//Pagesel enables to select a page in the selected chip memory and return its configuration block
|
||||
//Chips with a single page will not answer to this command
|
||||
// It appears we're fine ignoring this.
|
||||
//Otherwise, we should answer 8bytes (block) + 2bytes CRC
|
||||
// } else if(receivedCmd[0] == ICLASS_CMD_DETECT) { // 0x0F
|
||||
} else {
|
||||
//#db# Unknown command received from reader (len=5): 26 1 0 f6 a 44 44 44 44
|
||||
// Never seen this command before
|
||||
Dbprintf("Unhandled command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
|
||||
Dbprintf("Unhandled command received from reader (len %d) | %02x %02x %02x %02x %02x %02x %02x %02x %02x",
|
||||
len,
|
||||
receivedCmd[0], receivedCmd[1], receivedCmd[2],
|
||||
receivedCmd[3], receivedCmd[4], receivedCmd[5],
|
||||
|
|
@ -1252,11 +1281,6 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
|
|||
}
|
||||
|
||||
cmdsRecvd++;
|
||||
// if (cmdsRecvd > 999) {
|
||||
//DbpString("999 commands later...");
|
||||
//exitLoop = true;
|
||||
//continue;
|
||||
// }
|
||||
|
||||
/**
|
||||
A legit tag has about 380us delay between reader EOT and tag SOF.
|
||||
|
|
@ -1266,17 +1290,17 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
|
|||
t2r_time = (GetCountSspClk() - time_0) << 4;
|
||||
}
|
||||
|
||||
if (tracing) {
|
||||
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);
|
||||
//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 (trace_data != NULL) {
|
||||
GetParity(trace_data, trace_data_size, parity);
|
||||
LogTrace(trace_data, trace_data_size, t2r_time, t2r_time, parity, false);
|
||||
}
|
||||
if (!tracing)
|
||||
DbpString("Trace full");
|
||||
LogTrace(receivedCmd, len, (r2t_time - time_0)<< 4, (r2t_time - time_0) << 4, NULL, true);
|
||||
|
||||
if (trace_data != NULL) {
|
||||
//GetParity(trace_data, trace_data_size, parity);
|
||||
//LogTrace(trace_data, trace_data_size, t2r_time, t2r_time, parity, false);
|
||||
LogTrace(trace_data, trace_data_size, t2r_time, t2r_time, NULL, false);
|
||||
DbpString("trace written");
|
||||
}
|
||||
}
|
||||
|
||||
|
|
@ -1288,15 +1312,20 @@ int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf) {
|
|||
return buttonPressed;
|
||||
}
|
||||
|
||||
/**
|
||||
* @brief sends our simulated tag answer
|
||||
* @param resp
|
||||
* @param respLen
|
||||
* @param delay
|
||||
*/
|
||||
static int SendIClassAnswer(uint8_t *resp, int respLen, int delay) {
|
||||
int i = 0, d = 0;
|
||||
uint8_t b = 0;
|
||||
|
||||
//FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_424K);
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_424K_8BIT);
|
||||
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_MODULATE_424K_8BIT);
|
||||
AT91C_BASE_SSC->SSC_THR = 0x00;
|
||||
FpgaSetupSsc();
|
||||
//FpgaSetupSsc();
|
||||
|
||||
while (!BUTTON_PRESS()) {
|
||||
if ( (AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)){
|
||||
b = AT91C_BASE_SSC->SSC_RHR; (void) b;
|
||||
|
|
@ -1327,16 +1356,23 @@ static int SendIClassAnswer(uint8_t *resp, int respLen, int delay) {
|
|||
// Transmit the command (to the tag) that was placed in ToSend[].
|
||||
//-----------------------------------------------------------------------------
|
||||
static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int *wait) {
|
||||
|
||||
int c;
|
||||
volatile uint32_t r;
|
||||
bool firstpart = true;
|
||||
uint8_t sendbyte;
|
||||
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
|
||||
AT91C_BASE_SSC->SSC_THR = 0x00;
|
||||
FpgaSetupSsc();
|
||||
SpinDelay(100);
|
||||
|
||||
if (wait) {
|
||||
if (*wait < 10) *wait = 10;
|
||||
|
||||
for (c = 0; c < *wait;) {
|
||||
|
||||
WDT_HIT();
|
||||
|
||||
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
|
||||
AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing!
|
||||
c++;
|
||||
|
|
@ -1344,14 +1380,15 @@ static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int
|
|||
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
|
||||
r = AT91C_BASE_SSC->SSC_RHR; (void)r;
|
||||
}
|
||||
WDT_HIT();
|
||||
}
|
||||
}
|
||||
|
||||
uint8_t sendbyte;
|
||||
bool firstpart = true;
|
||||
c = 0;
|
||||
|
||||
for(;;) {
|
||||
|
||||
WDT_HIT();
|
||||
|
||||
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
|
||||
|
||||
// DOUBLE THE SAMPLES!
|
||||
|
|
@ -1369,12 +1406,11 @@ static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int
|
|||
firstpart = !firstpart;
|
||||
|
||||
if (c >= len) break;
|
||||
|
||||
}
|
||||
|
||||
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
|
||||
r = AT91C_BASE_SSC->SSC_RHR; (void)r;
|
||||
}
|
||||
WDT_HIT();
|
||||
}
|
||||
|
||||
if (samples) {
|
||||
|
|
@ -1388,13 +1424,13 @@ static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int
|
|||
//-----------------------------------------------------------------------------
|
||||
// Prepare iClass reader command to send to FPGA
|
||||
//-----------------------------------------------------------------------------
|
||||
void CodeIClassCommand(const uint8_t * cmd, int len) {
|
||||
void CodeIClassCommand(const uint8_t* cmd, int len) {
|
||||
int i, j, k;
|
||||
uint8_t b;
|
||||
|
||||
ToSendReset();
|
||||
|
||||
// Start of Communication: 1 out of 4
|
||||
// (SOC) Start of Communication: 1 out of 4
|
||||
ToSend[++ToSendMax] = 0xf0;
|
||||
ToSend[++ToSendMax] = 0x00;
|
||||
ToSend[++ToSendMax] = 0x0f;
|
||||
|
|
@ -1415,7 +1451,7 @@ void CodeIClassCommand(const uint8_t * cmd, int len) {
|
|||
}
|
||||
}
|
||||
|
||||
// End of Communication
|
||||
// (EOC) End of Communication
|
||||
ToSend[++ToSendMax] = 0x00;
|
||||
ToSend[++ToSendMax] = 0x00;
|
||||
ToSend[++ToSendMax] = 0xf0;
|
||||
|
|
@ -1426,23 +1462,21 @@ void CodeIClassCommand(const uint8_t * cmd, int len) {
|
|||
}
|
||||
|
||||
void ReaderTransmitIClass(uint8_t* frame, int len) {
|
||||
int wait = 0;
|
||||
int samples = 0;
|
||||
|
||||
int wait = 0, samples = 0;
|
||||
|
||||
// This is tied to other size changes
|
||||
CodeIClassCommand(frame,len);
|
||||
CodeIClassCommand(frame, len);
|
||||
|
||||
// Select the card
|
||||
TransmitIClassCommand(ToSend, ToSendMax, &samples, &wait);
|
||||
if(trigger)
|
||||
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);
|
||||
}
|
||||
uint8_t par[len/8];
|
||||
GetParity(frame, len, par);
|
||||
LogTrace(frame, len, rsamples, rsamples, par, true);
|
||||
}
|
||||
|
||||
//-----------------------------------------------------------------------------
|
||||
|
|
@ -1450,39 +1484,40 @@ void ReaderTransmitIClass(uint8_t* frame, int len) {
|
|||
// If a response is captured return TRUE
|
||||
// If it takes too long return FALSE
|
||||
//-----------------------------------------------------------------------------
|
||||
static int GetIClassAnswer(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) {
|
||||
static int GetIClassAnswer(uint8_t* receivedResponse, int maxLen, int *samples, int *elapsed) {
|
||||
// buffer needs to be 512 bytes
|
||||
int c;
|
||||
|
||||
// maxLen is not used...
|
||||
|
||||
int c = 0;
|
||||
bool skip = false;
|
||||
|
||||
// Setup UART/DEMOD to receive
|
||||
Demod.output = receivedResponse;
|
||||
Demod.len = 0;
|
||||
Demod.state = DEMOD_UNSYNCD;
|
||||
|
||||
if (elapsed) *elapsed = 0;
|
||||
|
||||
// Set FPGA mode to "reader listen mode", no modulation (listen
|
||||
// only, since we are receiving, not transmitting).
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_LISTEN);
|
||||
|
||||
// Now get the answer from the card
|
||||
Demod.output = receivedResponse;
|
||||
Demod.len = 0;
|
||||
Demod.state = DEMOD_UNSYNCD;
|
||||
// clear RXRDY:
|
||||
uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
|
||||
|
||||
uint8_t b;
|
||||
if (elapsed) *elapsed = 0;
|
||||
|
||||
bool skip = false;
|
||||
|
||||
c = 0;
|
||||
for(;;) {
|
||||
while (!BUTTON_PRESS()) {
|
||||
WDT_HIT();
|
||||
|
||||
if (BUTTON_PRESS()) return false;
|
||||
|
||||
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
|
||||
AT91C_BASE_SSC->SSC_THR = 0x00; // To make use of exact timing of next command from reader!!
|
||||
if (elapsed) (*elapsed)++;
|
||||
}
|
||||
|
||||
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
|
||||
if (c < timeout)
|
||||
c++;
|
||||
else
|
||||
return false;
|
||||
if (c >= timeout) return false;
|
||||
|
||||
c++;
|
||||
|
||||
b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
|
||||
|
||||
|
|
@ -1497,6 +1532,7 @@ static int GetIClassAnswer(uint8_t *receivedResponse, int maxLen, int *samples,
|
|||
}
|
||||
}
|
||||
}
|
||||
return false;
|
||||
}
|
||||
|
||||
int ReaderReceiveIClass(uint8_t* receivedAnswer) {
|
||||
|
|
@ -1507,11 +1543,8 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer) {
|
|||
|
||||
rsamples += samples;
|
||||
|
||||
if (tracing) {
|
||||
uint8_t parity[MAX_PARITY_SIZE];
|
||||
GetParity(receivedAnswer, Demod.len, parity);
|
||||
LogTrace(receivedAnswer, Demod.len, rsamples, rsamples, parity, false);
|
||||
}
|
||||
LogTrace(receivedAnswer, Demod.len, rsamples, rsamples, NULL, false);
|
||||
|
||||
if (samples == 0)
|
||||
return false;
|
||||
return Demod.len;
|
||||
|
|
@ -1519,26 +1552,26 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer) {
|
|||
|
||||
void setupIclassReader() {
|
||||
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
|
||||
|
||||
FpgaSetupSsc();
|
||||
|
||||
SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
|
||||
|
||||
// Reset trace buffer
|
||||
clear_trace();
|
||||
set_tracing(true);
|
||||
|
||||
// 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);
|
||||
SpinDelay(20);
|
||||
LED_A_ON();
|
||||
|
||||
}
|
||||
|
||||
bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries) {
|
||||
|
|
@ -1560,15 +1593,16 @@ bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* re
|
|||
* 2 = Got CSN and CC
|
||||
*/
|
||||
uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key) {
|
||||
static uint8_t act_all[] = { 0x0a };
|
||||
//static uint8_t identify[] = { 0x0c };
|
||||
static uint8_t identify[] = { 0x0c, 0x00, 0x73, 0x33 };
|
||||
static uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
||||
static uint8_t readcheck_cc[]= { 0x88, 0x02 };
|
||||
if (use_credit_key)
|
||||
readcheck_cc[0] = 0x18;
|
||||
else
|
||||
readcheck_cc[0] = 0x88;
|
||||
|
||||
// act_all...
|
||||
|
||||
static uint8_t act_all[] = { ICLASS_CMD_ACTALL };
|
||||
static uint8_t identify[] = { ICLASS_CMD_READ_OR_IDENTIFY, 0x00, 0x73, 0x33 };
|
||||
static uint8_t select[] = { ICLASS_CMD_SELECT, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
|
||||
static uint8_t readcheck_cc[]= { ICLASS_CMD_READCHECK_KD, 0x02 };
|
||||
|
||||
if (use_credit_key)
|
||||
readcheck_cc[0] = ICLASS_CMD_READCHECK_KC;
|
||||
|
||||
uint8_t resp[ICLASS_BUFFER_SIZE];
|
||||
|
||||
|
|
@ -1576,16 +1610,19 @@ uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key) {
|
|||
|
||||
// Send act_all
|
||||
ReaderTransmitIClass(act_all, 1);
|
||||
|
||||
// Card present?
|
||||
if (!ReaderReceiveIClass(resp)) return read_status;//Fail
|
||||
|
||||
//Send Identify
|
||||
ReaderTransmitIClass(identify, 1);
|
||||
|
||||
//We expect a 10-byte response here, 8 byte anticollision-CSN and 2 byte CRC
|
||||
uint8_t len = ReaderReceiveIClass(resp);
|
||||
if (len != 10) return read_status;//Fail
|
||||
|
||||
//Copy the Anti-collision CSN to our select-packet
|
||||
memcpy(&select[1],resp,8);
|
||||
memcpy(&select[1], resp, 8);
|
||||
//Select the card
|
||||
ReaderTransmitIClass(select, sizeof(select));
|
||||
//We expect a 10-byte response here, 8 byte CSN and 2 byte CRC
|
||||
|
|
@ -1594,7 +1631,7 @@ uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key) {
|
|||
|
||||
//Success - level 1, we got CSN
|
||||
//Save CSN in response data
|
||||
memcpy(card_data,resp,8);
|
||||
memcpy(card_data, resp, 8);
|
||||
|
||||
//Flag that we got to at least stage 1, read CSN
|
||||
read_status = 1;
|
||||
|
|
@ -1603,7 +1640,7 @@ uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key) {
|
|||
ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
|
||||
if (ReaderReceiveIClass(resp) == 8) {
|
||||
//Save CC (e-purse) in response data
|
||||
memcpy(card_data+8,resp,8);
|
||||
memcpy(card_data+8, resp, 8);
|
||||
read_status++;
|
||||
}
|
||||
|
||||
|
|
@ -1651,16 +1688,13 @@ void ReaderIClass(uint8_t arg0) {
|
|||
uint16_t tryCnt = 0;
|
||||
bool userCancelled = BUTTON_PRESS() || usb_poll_validate_length();
|
||||
while (!userCancelled) {
|
||||
|
||||
WDT_HIT();
|
||||
|
||||
// if only looking for one card try 2 times if we missed it the first time
|
||||
if (try_once && tryCnt > 2) break;
|
||||
|
||||
tryCnt++;
|
||||
|
||||
if (!tracing) {
|
||||
DbpString("Trace full");
|
||||
break;
|
||||
}
|
||||
WDT_HIT();
|
||||
|
||||
read_status = handshakeIclassTag_ext(card_data, use_credit_key);
|
||||
|
||||
|
|
@ -1672,6 +1706,7 @@ void ReaderIClass(uint8_t arg0) {
|
|||
// layout is CSN|CONFIG|CC, so here we reorder the data,
|
||||
// moving CC forward 8 bytes
|
||||
memcpy(card_data+16, card_data+8, 8);
|
||||
|
||||
//Read block 1, config
|
||||
if (flagReadConfig) {
|
||||
if (sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, 10, 10)) {
|
||||
|
|
@ -1703,9 +1738,8 @@ void ReaderIClass(uint8_t arg0) {
|
|||
|
||||
LED_B_ON();
|
||||
//Send back to client, but don't bother if we already sent this -
|
||||
// only useful if looping in arm (not try_once && not abort_after_read)
|
||||
if (memcmp(last_csn, card_data, 8) != 0)
|
||||
{
|
||||
// only useful if looping in arm (not try_once && not abort_after_read)
|
||||
if (memcmp(last_csn, card_data, 8) != 0) {
|
||||
// If caller requires that we get Conf, CC, AA, continue until we got it
|
||||
if ( (result_status ^ FLAG_ICLASS_READER_CSN ^ flagReadConfig ^ flagReadCC ^ flagReadAA) == 0) {
|
||||
cmd_send(CMD_ACK, result_status, 0, 0, card_data, sizeof(card_data) );
|
||||
|
|
@ -1726,6 +1760,7 @@ void ReaderIClass(uint8_t arg0) {
|
|||
|
||||
out:
|
||||
LEDsoff();
|
||||
Dbprintf("Done...");
|
||||
set_tracing(false);
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||||
}
|
||||
|
|
@ -1767,19 +1802,14 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
|
|||
while (!BUTTON_PRESS()) {
|
||||
|
||||
WDT_HIT();
|
||||
|
||||
if (!tracing) {
|
||||
DbpString("Trace full");
|
||||
break;
|
||||
}
|
||||
|
||||
uint8_t read_status = handshakeIclassTag(card_data);
|
||||
if (read_status < 2) continue;
|
||||
|
||||
//for now replay captured auth (as cc not updated)
|
||||
memcpy(check+5,MAC,4);
|
||||
memcpy(check+5, MAC, 4);
|
||||
|
||||
if (!sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5)) {
|
||||
if (!sendCmdGetResponseWithRetries(check, sizeof(check), resp, 4, 5)) {
|
||||
Dbprintf("Error: Authentication Fail!");
|
||||
continue;
|
||||
}
|
||||
|
|
@ -1790,7 +1820,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
|
|||
read[2] = crc >> 8;
|
||||
read[3] = crc & 0xff;
|
||||
|
||||
if (!sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10)) {
|
||||
if (!sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10)) {
|
||||
Dbprintf("Dump config (block 1) failed");
|
||||
continue;
|
||||
}
|
||||
|
|
@ -1803,6 +1833,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
|
|||
memory.keyaccess = (mem & 0x1);
|
||||
|
||||
cardsize = memory.k16 ? 255 : 32;
|
||||
|
||||
WDT_HIT();
|
||||
//Set card_data to all zeroes, we'll fill it with data
|
||||
memset(card_data, 0x0, USB_CMD_DATA_SIZE);
|
||||
|
|
@ -1869,7 +1900,8 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
|
|||
0
|
||||
);
|
||||
|
||||
LED_A_OFF();
|
||||
LEDsoff();
|
||||
Dbprintf("Done...");
|
||||
set_tracing(false);
|
||||
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
|
||||
}
|
||||
|
|
|
|||
Loading…
Reference in a new issue