X-Git-Url: http://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/1e262141523bcda8b170cc42fb5bd8d6bb8d17f1..refs/pull/2/head:/armsrc/iclass.c diff --git a/armsrc/iclass.c b/armsrc/iclass.c index 37006e51..e876132e 100644 --- a/armsrc/iclass.c +++ b/armsrc/iclass.c @@ -60,22 +60,6 @@ static int timeout = 4096; #define SEC_Y 0x00 #define SEC_Z 0xc0 -// SAME AS IN iso14443a. -#define RECV_CMD_OFFSET 3032 -#define RECV_RES_OFFSET 3096 -#define DMA_BUFFER_OFFSET 3160 -#define DMA_BUFFER_SIZE 4096 -#define TRACE_LENGTH 3000 - -uint32_t SwapBits(uint32_t value, int nrbits) { - int i; - uint32_t newvalue = 0; - for(i = 0; i < nrbits; i++) { - newvalue ^= ((value >> i) & 1) << (nrbits - 1 - i); - } - return newvalue; -} - static int SendIClassAnswer(uint8_t *resp, int respLen, int delay); //----------------------------------------------------------------------------- @@ -687,7 +671,7 @@ void RAMFUNC SnoopIClass(void) // #define RECV_RES_OFFSET 3096 // #define DMA_BUFFER_OFFSET 3160 // #define DMA_BUFFER_SIZE 4096 -// #define TRACE_LENGTH 3000 +// #define TRACE_SIZE 3000 // We won't start recording the frames that we acquire until we trigger; // a good trigger condition to get started is probably when we see a @@ -707,7 +691,7 @@ void RAMFUNC SnoopIClass(void) // reset traceLen to 0 iso14a_set_tracing(TRUE); - iso14a_clear_tracelen(); + iso14a_clear_trace(); iso14a_set_trigger(FALSE); // The DMA buffer, used to stream samples from the FPGA @@ -816,7 +800,7 @@ void RAMFUNC SnoopIClass(void) trace[traceLen++] = Uart.byteCnt; memcpy(trace+traceLen, receivedCmd, Uart.byteCnt); traceLen += Uart.byteCnt; - if(traceLen > TRACE_LENGTH) break; + if(traceLen > TRACE_SIZE) break; //} /* And ready to receive another command. */ Uart.state = STATE_UNSYNCD; @@ -848,7 +832,7 @@ void RAMFUNC SnoopIClass(void) trace[traceLen++] = Demod.len; memcpy(trace+traceLen, receivedResponse, Demod.len); traceLen += Demod.len; - if(traceLen > TRACE_LENGTH) break; + if(traceLen > TRACE_SIZE) break; //triggered = TRUE; @@ -885,20 +869,10 @@ done: LED_D_OFF(); } - -void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN, int direction) { - int i; - int j = 0; - - if(direction == 0) { - for(i = 0; i < 8; i++) { - rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5); - } - } else { - for(i = 0; i < 8; i++) { - if(i == 0) { j = 7; } else { j = i - 1; } - originalCSN[i] = (rotatedCSN[i] << 3) | (rotatedCSN[j] >> 5); - } +void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) { + int i; + for(i = 0; i < 8; i++) { + rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5); } } @@ -909,7 +883,7 @@ void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN, int direction) { //----------------------------------------------------------------------------- static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen) { - // Set FPGA mode to "simulated ISO 14443A tag", no modulation (listen + // Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen // only, since we are receiving, not transmitting). // Signal field is off with the appropriate LED LED_D_OFF(); @@ -1019,38 +993,19 @@ static void CodeIClassTagSOF() //----------------------------------------------------------------------------- void SimulateIClass(uint8_t arg0, uint8_t *datain) { - // DEFINED ABOVE - // #define RECV_CMD_OFFSET 3032 - // #define RECV_RES_OFFSET 3096 - // #define DMA_BUFFER_OFFSET 3160 - // #define DMA_BUFFER_SIZE 4096 - // #define TRACE_LENGTH 3000 uint8_t simType = arg0; - int SMALL_BUFFER_OFFSET = 2000; - bool fullbuffer = FALSE; - uint32_t parityBits = 0; - - iso14a_set_tracing(TRUE); - iso14a_clear_tracelen(); - iso14a_set_trigger(FALSE); - // PREPARE PROTOCOL MESSAGES FIRST - - // Pointers to tag answers that should be stored in the buffer - uint8_t *response; - int responselength; + // Enable and clear the trace + tracing = TRUE; + traceLen = 0; + memset(trace, 0x44, TRACE_SIZE); // CSN followed by two CRC bytes - uint8_t response1[] = { 0x0f }; // Tag SOF uint8_t response2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; - uint8_t response3[] = { 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, 0x00, 0x00 }; - int response1length = 1; - int response2length = 10; - int response3length = 10; + uint8_t response3[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 }; // e-Purse uint8_t response4[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; - int response4length = 8; if(simType == 0) { // Use the CSN from commandline @@ -1058,7 +1013,7 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) } // Construct anticollision-CSN - rotateCSN(response3,response2,0); + rotateCSN(response3,response2); // Compute CRC on both CSNs ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]); @@ -1071,37 +1026,36 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) // Reader 81 anticoll. CSN // Tag CSN - uint8_t *resp; - int respLen; + uint8_t *resp; + int respLen; + uint8_t* respdata = NULL; + int respsize = 0; + uint8_t sof = 0x0f; // Respond SOF -- takes 8 bytes - uint8_t *resp1 = (((uint8_t *)BigBuf)); + uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET); int resp1Len; // Anticollision CSN (rotated CSN) // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit) - uint8_t *resp2 = (((uint8_t *)BigBuf) + 10 + SMALL_BUFFER_OFFSET); + uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 10); int resp2Len; // CSN // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit) - uint8_t *resp3 = (((uint8_t *)BigBuf) + 190 + SMALL_BUFFER_OFFSET); - //int resp3Len; // NOT USED + uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 190); + int resp3Len; // e-Purse // 144: Takes 16 bytes for SOF/EOF and 8 * 16 = 128 bytes (2 bytes/bit) - uint8_t *resp4 = (((uint8_t *)BigBuf) + 270 + SMALL_BUFFER_OFFSET); + uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 370); int resp4Len; // + 1720.. - //uint8_t *receivedCmd = (uint8_t *)BigBuf; - uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); - memset(receivedCmd, 0x44, 64); + uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); + memset(receivedCmd, 0x44, RECV_CMD_SIZE); int len; - // Reset trace buffer - memset(trace, 0x44, RECV_CMD_OFFSET); - // Prepare card messages ToSendMax = 0; @@ -1115,7 +1069,7 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) // CSN CodeIClassTagAnswer(response3, sizeof(response3)); - memcpy(resp3, ToSend, ToSendMax); //resp3Len = ToSendMax; // NOT USED + memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax; // e-Purse CodeIClassTagAnswer(response4, sizeof(response4)); @@ -1126,50 +1080,52 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) FpgaSetupSsc(); // To control where we are in the protocol - //int order = 0; - // int lastorder; // NOT USED int cmdsRecvd = 0; - resp = resp1; respLen = 0; - response = response1; responselength = response1length; + LED_A_ON(); for(;;) { LED_B_OFF(); if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) { - DbpString("button press"); + DbpString("button press"); break; - } + } - // Okay, look at the command now. - //lastorder = order; // NOT USED - if(receivedCmd[0] == 0x0a) { + // Okay, look at the command now. + if(receivedCmd[0] == 0x0a) { // Reader in anticollission phase resp = resp1; respLen = resp1Len; //order = 1; - response = response1; responselength = response1length; + respdata = &sof; + respsize = sizeof(sof); //resp = resp2; respLen = resp2Len; order = 2; //DbpString("Hello request from reader:"); } else if(receivedCmd[0] == 0x0c) { // Reader asks for anticollission CSN resp = resp2; respLen = resp2Len; //order = 2; - response = response2; responselength = response2length; + respdata = response2; + respsize = sizeof(response2); //DbpString("Reader requests anticollission CSN:"); } else if(receivedCmd[0] == 0x81) { // Reader selects anticollission CSN. // Tag sends the corresponding real CSN - resp = resp3; respLen = resp2Len; //order = 3; - response = response3; responselength = response3length; + resp = resp3; respLen = resp3Len; //order = 3; + respdata = response3; + respsize = sizeof(response3); //DbpString("Reader selects anticollission CSN:"); } else if(receivedCmd[0] == 0x88) { // Read e-purse (88 02) resp = resp4; respLen = resp4Len; //order = 4; - response = response4; responselength = response4length; + respdata = response4; + respsize = sizeof(response4); LED_B_ON(); } else if(receivedCmd[0] == 0x05) { // Reader random and reader MAC!!! // Lets store this ;-) - Dbprintf(" CSN: %02x %02x %02x %02x %02x %02x %02x %02x", +/* + Dbprintf(" CSN: %02x %02x %02x %02x %02x %02x %02x %02x", response3[0], response3[1], response3[2], response3[3], response3[4], response3[5], response3[6], response3[7]); +*/ Dbprintf("READER AUTH (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x", len, receivedCmd[0], receivedCmd[1], receivedCmd[2], @@ -1179,10 +1135,14 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) // Do not respond // We do not know what to answer, so lets keep quit resp = resp1; respLen = 0; //order = 5; + respdata = NULL; + respsize = 0; } else if(receivedCmd[0] == 0x00 && len == 1) { // Reader ends the session resp = resp1; respLen = 0; //order = 0; - } else { + respdata = NULL; + respsize = 0; + } else { // Never seen this command before Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x", len, @@ -1191,7 +1151,8 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) receivedCmd[6], receivedCmd[7], receivedCmd[8]); // Do not respond resp = resp1; respLen = 0; //order = 0; - response = response1; responselength = response1length; + respdata = NULL; + respsize = 0; } if(cmdsRecvd > 999) { @@ -1202,27 +1163,25 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain) cmdsRecvd++; } - if(respLen <= 0) continue; - - SendIClassAnswer(resp, respLen, 21); - - // Store commands and responses in buffer - // as long as there is room for it. - if(traceLen < (SMALL_BUFFER_OFFSET - 32)) { - if(tracing) { - LogTrace(receivedCmd,len,0,GetParity(receivedCmd,len),TRUE); - parityBits = SwapBits(GetParity(response,responselength),responselength); - LogTrace(response,responselength,0,parityBits,FALSE); + if(respLen > 0) { + SendIClassAnswer(resp, respLen, 21); + } + + if (tracing) { + LogTrace(receivedCmd,len, rsamples, Uart.parityBits, TRUE); + if (respdata != NULL) { + LogTrace(respdata,respsize, rsamples, SwapBits(GetParity(respdata,respsize),respsize), FALSE); + } + if(traceLen > TRACE_SIZE) { + DbpString("Trace full"); + break; } - } else if(!fullbuffer) { - DbpString("Trace buffer is full now..."); - fullbuffer = TRUE; } - memset(receivedCmd, 0x44, 32); - } + memset(receivedCmd, 0x44, RECV_CMD_SIZE); + } - //Dbprintf("Commands received: %d", cmdsRecvd); + Dbprintf("%x", cmdsRecvd); LED_A_OFF(); LED_B_OFF(); } @@ -1231,6 +1190,9 @@ static int SendIClassAnswer(uint8_t *resp, int respLen, int delay) { int i = 0, u = 0, d = 0; uint8_t b = 0; + // return 0; + // Modulate Manchester + // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD424); FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD); AT91C_BASE_SSC->SSC_THR = 0x00; FpgaSetupSsc(); @@ -1387,7 +1349,7 @@ void ReaderTransmitIClass(uint8_t* frame, int len) LED_A_ON(); // Store reader command in buffer - if (tracing) LogTrace(frame,len,0,par,TRUE); + if (tracing) LogTrace(frame,len,rsamples,par,TRUE); } //----------------------------------------------------------------------------- @@ -1445,21 +1407,17 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer) { int samples = 0; if (!GetIClassAnswer(receivedAnswer,160,&samples,0)) return FALSE; - if (tracing) LogTrace(receivedAnswer,Demod.len,samples,Demod.parityBits,FALSE); + rsamples += samples; + if (tracing) LogTrace(receivedAnswer,Demod.len,rsamples,Demod.parityBits,FALSE); if(samples == 0) return FALSE; return Demod.len; } // Reader iClass Anticollission void ReaderIClass(uint8_t arg0) { - int i = 0; - int length = 0; - bool csn_failure = FALSE; - uint8_t act_all[] = { 0x0a }; uint8_t identify[] = { 0x0c }; uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; - uint8_t check_csn[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }; uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes @@ -1485,47 +1443,37 @@ void ReaderIClass(uint8_t arg0) { LED_A_ON(); for(;;) { - if(traceLen > TRACE_LENGTH || BUTTON_PRESS()) break; + + if(traceLen > TRACE_SIZE) { + DbpString("Trace full"); + break; + } + + if (BUTTON_PRESS()) break; // Send act_all ReaderTransmitIClass(act_all, 1); // Card present? if(ReaderReceiveIClass(resp)) { ReaderTransmitIClass(identify, 1); - if((length = ReaderReceiveIClass(resp))) { - if(length == 10) { - // Select card - memcpy(&select[1],resp,8); - ReaderTransmitIClass(select, sizeof(select)); - - if((length = ReaderReceiveIClass(resp))) { - if(length == 10) { - rotateCSN(check_csn,&select[1],1); - csn_failure = FALSE; - for(i = 0; i < 8; i++) { - if(check_csn[i] != resp[i]) { - csn_failure = TRUE; - break; - } - } - - if(!csn_failure) { - Dbprintf(" Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x", - check_csn[0], check_csn[1], check_csn[2], - check_csn[3], check_csn[4], check_csn[5], - check_csn[6], check_csn[7]); - } - // Card selected, whats next... ;-) - - } - } + if(ReaderReceiveIClass(resp) == 10) { + // Select card + memcpy(&select[1],resp,8); + ReaderTransmitIClass(select, sizeof(select)); + + if(ReaderReceiveIClass(resp) == 10) { + Dbprintf(" Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x", + resp[0], resp[1], resp[2], + resp[3], resp[4], resp[5], + resp[6], resp[7]); } + // Card selected, whats next... ;-) } } WDT_HIT(); } LED_A_OFF(); - } +