From: roel@libnfc.org Date: Fri, 29 Jun 2012 12:09:24 +0000 (+0000) Subject: cleaned up some code X-Git-Tag: v1.0.0~182 X-Git-Url: https://git.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/commitdiff_plain/254b70a4afb07e6ec0f8b1b300df488337bbebc3 cleaned up some code --- diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c index 7eca7977..7f82ad32 100644 --- a/armsrc/iso14443a.c +++ b/armsrc/iso14443a.c @@ -1042,52 +1042,12 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) response3a[0] = sak & 0xFB; ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]); + uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce + uint8_t response6[] = { 0x03, 0x3B, 0x00, 0x00, 0x00 }; // dummy ATS (pseudo-ATR), answer to RATS + ComputeCrc14443(CRC_14443_A, response6, 3, &response6[3], &response6[4]); -/* - // Check if the uid uses the (optional) second part - if (uid_2nd) { - // Configure the ATQA and SAK accordingly - response1[0] |= 0x40; - sak |= 0x04; - } -*/ - -//static const uint8_t response2a[] = { 0x51, 0x48, 0x1d, 0x80, 0x84 }; // uid - cascade2 - 2nd half (4 bytes) of UID+ BCCheck - - - // Prepare protocol messages - // static const uint8_t cmd1[] = { 0x26 }; -// static const uint8_t response1[] = { 0x02, 0x00 }; // Says: I am Mifare 4k - original line - greg -// -// uint8_t response1[] = { 0x44, 0x03 }; // Says: I am a DESFire Tag, ph33r me -// static const uint8_t response1[] = { 0x44, 0x00 }; // Says: I am a ULTRALITE Tag, 0wn me - - // UID response - // static const uint8_t cmd2[] = { 0x93, 0x20 }; - //static const uint8_t response2[] = { 0x9a, 0xe5, 0xe4, 0x43, 0xd8 }; // original value - greg - -// my desfire -// uint8_t response2[] = { 0x88, 0x04, 0x21, 0x3f, 0x4d }; // known uid - note cascade (0x88), 2nd byte (0x04) = NXP/Phillips - - -// When reader selects us during cascade1 it will send cmd3 -//uint8_t response3[] = { 0x04, 0x00, 0x00 }; // SAK Select (cascade1) successful response (ULTRALITE) -//uint8_t response3[] = { 0x24, 0x00, 0x00 }; // SAK Select (cascade1) successful response (DESFire) -//ComputeCrc14443(CRC_14443_A, response3, 1, &response3[1], &response3[2]); - -// send cascade2 2nd half of UID -//static const uint8_t response2a[] = { 0x51, 0x48, 0x1d, 0x80, 0x84 }; // uid - cascade2 - 2nd half (4 bytes) of UID+ BCCheck -// NOTE : THE CRC on the above may be wrong as I have obfuscated the actual UID - -// When reader selects us during cascade2 it will send cmd3a -//uint8_t response3a[] = { 0x00, 0x00, 0x00 }; // SAK Select (cascade2) successful response (ULTRALITE) -//uint8_t response3a[] = { 0x20, 0x00, 0x00 }; // SAK Select (cascade2) successful response (DESFire) -//ComputeCrc14443(CRC_14443_A, response3a, 1, &response3a[1], &response3a[2]); - - static const uint8_t response5[] = { 0x00, 0x00, 0x00, 0x00 }; // Very random tag nonce - - uint8_t *resp; - int respLen; + uint8_t *resp; + int respLen; // Longest possible response will be 16 bytes + 2 CRC = 18 bytes // This will need @@ -1102,42 +1062,41 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) // 166 bytes, since every bit that needs to be send costs us a byte // - // Respond with card type - uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET); - int resp1Len; + // Respond with card type + uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET); + int resp1Len; - // Anticollision cascade1 - respond with uid - uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 166); - int resp2Len; + // Anticollision cascade1 - respond with uid + uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 166); + int resp2Len; - // Anticollision cascade2 - respond with 2nd half of uid if asked - // we're only going to be asked if we set the 1st byte of the UID (during cascade1) to 0x88 - uint8_t *resp2a = (((uint8_t *)BigBuf) + 1140); - int resp2aLen; + // Anticollision cascade2 - respond with 2nd half of uid if asked + // we're only going to be asked if we set the 1st byte of the UID (during cascade1) to 0x88 + uint8_t *resp2a = (((uint8_t *)BigBuf) + 1140); + int resp2aLen; - // Acknowledge select - cascade 1 - uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*2)); - int resp3Len; + // Acknowledge select - cascade 1 + uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*2)); + int resp3Len; - // Acknowledge select - cascade 2 - uint8_t *resp3a = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*3)); - int resp3aLen; + // Acknowledge select - cascade 2 + uint8_t *resp3a = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*3)); + int resp3aLen; - // Response to a read request - not implemented atm - uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*4)); - int resp4Len; + // Response to a read request - not implemented atm + uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*4)); + int resp4Len; - // Authenticate response - nonce - uint8_t *resp5 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*5)); - int resp5Len; + // Authenticate response - nonce + uint8_t *resp5 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*5)); + int resp5Len; - uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); -// uint8_t *receivedCmd = (uint8_t *)BigBuf; - int len; + // Authenticate response - nonce + uint8_t *resp6 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + (166*6)); + int resp6Len; - //int i; - //int u; - //uint8_t b; + uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET); + int len; // To control where we are in the protocol int order = 0; @@ -1152,8 +1111,6 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) int respsize = 0; uint8_t nack = 0x04; - //int fdt_indicator; - memset(receivedCmd, 0x44, RECV_CMD_SIZE); // Prepare the responses of the anticollision phase @@ -1161,23 +1118,23 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) // Answer to request CodeIso14443aAsTag(response1, sizeof(response1)); - memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax; + memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax; // Send our UID (cascade 1) CodeIso14443aAsTag(response2, sizeof(response2)); - memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax; + memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax; // Answer to select (cascade1) CodeIso14443aAsTag(response3, sizeof(response3)); - memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax; + memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax; // Send the cascade 2 2nd part of the uid CodeIso14443aAsTag(response2a, sizeof(response2a)); - memcpy(resp2a, ToSend, ToSendMax); resp2aLen = ToSendMax; + memcpy(resp2a, ToSend, ToSendMax); resp2aLen = ToSendMax; // Answer to select (cascade 2) CodeIso14443aAsTag(response3a, sizeof(response3a)); - memcpy(resp3a, ToSend, ToSendMax); resp3aLen = ToSendMax; + memcpy(resp3a, ToSend, ToSendMax); resp3aLen = ToSendMax; // Strange answer is an example of rare message size (3 bits) CodeStrangeAnswerAsTag(); @@ -1185,101 +1142,74 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) // Authentication answer (random nonce) CodeIso14443aAsTag(response5, sizeof(response5)); - memcpy(resp5, ToSend, ToSendMax); resp5Len = ToSendMax; + memcpy(resp5, ToSend, ToSendMax); resp5Len = ToSendMax; - // We need to listen to the high-frequency, peak-detected path. - SetAdcMuxFor(GPIO_MUXSEL_HIPKD); - FpgaSetupSsc(); + // dummy ATS (pseudo-ATR), answer to RATS + CodeIso14443aAsTag(response6, sizeof(response6)); + memcpy(resp6, ToSend, ToSendMax); resp6Len = ToSendMax; - cmdsRecvd = 0; + // We need to listen to the high-frequency, peak-detected path. + SetAdcMuxFor(GPIO_MUXSEL_HIPKD); + FpgaSetupSsc(); - LED_A_ON(); - for(;;) { + cmdsRecvd = 0; + LED_A_ON(); + for(;;) { + if(!GetIso14443aCommandFromReader(receivedCmd, &len, RECV_CMD_SIZE)) { - DbpString("button press"); - break; - } - // doob - added loads of debug strings so we can see what the reader is saying to us during the sim as hi14alist is not populated - // Okay, look at the command now. - lastorder = order; - //i = 1; // first byte transmitted - if(receivedCmd[0] == 0x26) { - // Received a REQUEST + DbpString("button press"); + break; + } + // doob - added loads of debug strings so we can see what the reader is saying to us during the sim as hi14alist is not populated + // Okay, look at the command now. + lastorder = order; + if(receivedCmd[0] == 0x26) { // Received a REQUEST resp = resp1; respLen = resp1Len; order = 1; respdata = response1; respsize = sizeof(response1); - //DbpString("Hello request from reader:"); - } else if(receivedCmd[0] == 0x52) { - // Received a WAKEUP + } else if(receivedCmd[0] == 0x52) { // Received a WAKEUP resp = resp1; respLen = resp1Len; order = 6; -// //DbpString("Wakeup request from reader:"); respdata = response1; respsize = sizeof(response1); - } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) { // greg - cascade 1 anti-collision - // Received request for UID (cascade 1) + } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x93) { // Received request for UID (cascade 1) resp = resp2; respLen = resp2Len; order = 2; -// DbpString("UID (cascade 1) request from reader:"); -// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]); respdata = response2; respsize = sizeof(response2); - } else if(receivedCmd[1] == 0x20 && receivedCmd[0] ==0x95) { // greg - cascade 2 anti-collision - // Received request for UID (cascade 2) + } else if(receivedCmd[1] == 0x20 && receivedCmd[0] == 0x95) { // Received request for UID (cascade 2) resp = resp2a; respLen = resp2aLen; order = 20; -// DbpString("UID (cascade 2) request from reader:"); -// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]); respdata = response2a; respsize = sizeof(response2a); - - } else if(receivedCmd[1] == 0x70 && receivedCmd[0] ==0x93) { // greg - cascade 1 select - // Received a SELECT + } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x93) { // Received a SELECT (cascade 1) resp = resp3; respLen = resp3Len; order = 3; -// DbpString("Select (cascade 1) request from reader:"); -// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]); respdata = response3; respsize = sizeof(response3); - - } else if(receivedCmd[1] == 0x70 && receivedCmd[0] ==0x95) { // greg - cascade 2 select - // Received a SELECT + } else if(receivedCmd[1] == 0x70 && receivedCmd[0] == 0x95) { // Received a SELECT (cascade 2) resp = resp3a; respLen = resp3aLen; order = 30; -// DbpString("Select (cascade 2) request from reader:"); -// DbpIntegers(receivedCmd[0], receivedCmd[1], receivedCmd[2]); respdata = response3a; respsize = sizeof(response3a); - - } else if(receivedCmd[0] == 0x30) { - // Received a READ + } else if(receivedCmd[0] == 0x30) { // Received a (plain) READ resp = resp4; respLen = resp4Len; order = 4; // Do nothing - Dbprintf("Read request from reader: %x %x %x", - receivedCmd[0], receivedCmd[1], receivedCmd[2]); + Dbprintf("Read request from reader: %x %x",receivedCmd[0],receivedCmd[1]); respdata = &nack; respsize = sizeof(nack); // 4-bit answer - - } else if(receivedCmd[0] == 0x50) { - // Received a HALT - resp = resp1; respLen = 0; order = 5; // Do nothing + } else if(receivedCmd[0] == 0x50) { // Received a HALT DbpString("Reader requested we HALT!:"); + // Do not respond + resp = resp1; respLen = 0; order = 0; respdata = NULL; respsize = 0; - - } else if(receivedCmd[0] == 0x60) { - // Received an authentication request + } else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request resp = resp5; respLen = resp5Len; order = 7; - Dbprintf("Authenticate request from reader: %x %x %x", - receivedCmd[0], receivedCmd[1], receivedCmd[2]); - respdata = NULL; - respsize = 0; - - } else if(receivedCmd[0] == 0xE0) { - // Received a RATS request - resp = resp1; respLen = 0;order = 70; - Dbprintf("RATS request from reader: %x %x %x", - receivedCmd[0], receivedCmd[1], receivedCmd[2]); - respdata = NULL; - respsize = 0; + respdata = response5; + respsize = sizeof(response5); + } else if(receivedCmd[0] == 0xE0) { // Received a RATS request + resp = resp6; respLen = resp6Len; order = 70; + respdata = response6; + respsize = sizeof(response6); } else { // Never seen this command before - Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x", + Dbprintf("Received unknown command (len=%d): %02x %02x %02x %02x %02x %02x %02x %02x %02x", len, receivedCmd[0], receivedCmd[1], receivedCmd[2], receivedCmd[3], receivedCmd[4], receivedCmd[5], @@ -1302,22 +1232,26 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) //i = 0; } - if(cmdsRecvd > 999) { DbpString("1000 commands later..."); - break; - } - else { + break; + } else { cmdsRecvd++; } if(respLen > 0) { - //---------------------------- - //u = 0; - //b = 0x00; - //fdt_indicator = FALSE; EmSendCmd14443aRaw(resp, respLen, receivedCmd[0] == 0x52); } + + // After sending the response, print out some debug data. + if (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { + Dbprintf("Authenticate request from reader: %02x %02x",receivedCmd[0],receivedCmd[1]); + } else if (receivedCmd[0] == 0xE0) { + Dbprintf("RATS request from reader: %02x %02x",receivedCmd[0],receivedCmd[1]); + } else if (receivedCmd[0] == 0x30) { + Dbprintf("READ request from reader: %02x %02x",receivedCmd[0],receivedCmd[1]); + } + if (tracing) { LogTrace(receivedCmd,len, 0, Uart.parityBits, TRUE); @@ -1331,40 +1265,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd) } memset(receivedCmd, 0x44, RECV_CMD_SIZE); -/* // Modulate Manchester - FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD); - AT91C_BASE_SSC->SSC_THR = 0x00; - FpgaSetupSsc(); - - // ### Transmit the response ### - u = 0; - b = 0x00; - fdt_indicator = FALSE; - for(;;) { - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { - volatile uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR; - (void)b; - } - if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { - if(i > respLen) { - b = 0x00; - u++; - } else { - b = resp[i]; - i++; - } - AT91C_BASE_SSC->SSC_THR = b; - - if(u > 4) { - break; - } - } - if(BUTTON_PRESS()) { - break; - } - } -*/ - } + } Dbprintf("%x %x %x", happened, happened2, cmdsRecvd); LED_A_OFF();