X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/proxmark3-svn/blobdiff_plain/79dcb9e0900d51edf30d8cf863aca7be2f257ff4..a2bb2735d5095aabeba4a891fe4ba867a9afc2b3:/armsrc/iso14443a.c diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c index 4f0a990f..2ff722b0 100644 --- a/armsrc/iso14443a.c +++ b/armsrc/iso14443a.c @@ -10,17 +10,75 @@ // Routines to support ISO 14443 type A. //----------------------------------------------------------------------------- +#include "iso14443a.h" + #include "proxmark3.h" #include "apps.h" #include "util.h" #include "string.h" #include "cmd.h" - #include "iso14443crc.h" -#include "iso14443a.h" -#include "crapto1.h" +#include "crapto1/crapto1.h" #include "mifareutil.h" +#include "mifaresniff.h" #include "BigBuf.h" +#include "protocols.h" +#include "parity.h" + +typedef struct { + enum { + DEMOD_UNSYNCD, + // DEMOD_HALF_SYNCD, + // DEMOD_MOD_FIRST_HALF, + // DEMOD_NOMOD_FIRST_HALF, + DEMOD_MANCHESTER_DATA + } state; + uint16_t twoBits; + uint16_t highCnt; + uint16_t bitCount; + uint16_t collisionPos; + uint16_t syncBit; + uint8_t parityBits; + uint8_t parityLen; + uint16_t shiftReg; + uint16_t samples; + uint16_t len; + uint32_t startTime, endTime; + uint8_t *output; + uint8_t *parity; +} tDemod; + +typedef enum { + MOD_NOMOD = 0, + MOD_SECOND_HALF, + MOD_FIRST_HALF, + MOD_BOTH_HALVES + } Modulation_t; + +typedef struct { + enum { + STATE_UNSYNCD, + STATE_START_OF_COMMUNICATION, + STATE_MILLER_X, + STATE_MILLER_Y, + STATE_MILLER_Z, + // DROP_NONE, + // DROP_FIRST_HALF, + } state; + uint16_t shiftReg; + int16_t bitCount; + uint16_t len; + uint16_t byteCntMax; + uint16_t posCnt; + uint16_t syncBit; + uint8_t parityBits; + uint8_t parityLen; + uint32_t fourBits; + uint32_t startTime, endTime; + uint8_t *output; + uint8_t *parity; +} tUart; + static uint32_t iso14a_timeout; int rsamples = 0; uint8_t trigger = 0; @@ -34,7 +92,7 @@ static uint8_t iso14_pcb_blocknum = 0; #define REQUEST_GUARD_TIME (7000/16 + 1) // minimum time between last modulation of tag and next start bit from reader to tag: 1172 carrier cycles #define FRAME_DELAY_TIME_PICC_TO_PCD (1172/16 + 1) -// bool LastCommandWasRequest = FALSE; +// bool LastCommandWasRequest = false; // // Total delays including SSC-Transfers between ARM and FPGA. These are in carrier clock cycles (1/13,56MHz) @@ -74,13 +132,13 @@ uint16_t FpgaSendQueueDelay; #define DELAY_FPGA_QUEUE (FpgaSendQueueDelay<<1) // When the PM acts as tag and is sending, it takes -// 4*16 ticks until we can write data to the sending hold register +// 4*16 + 8 ticks until we can write data to the sending hold register // 8*16 ticks until the SHR is transferred to the Sending Shift Register -// 8 ticks until the first transfer starts -// 8 ticks later the FPGA samples the data -// + a varying number of ticks in the FPGA Delay Queue (mod_sig_buf) +// 8 ticks later the FPGA samples the first data +// + 16 ticks until assigned to mod_sig // + 1 tick to assign mod_sig_coil -#define DELAY_ARM2AIR_AS_TAG (4*16 + 8*16 + 8 + 8 + DELAY_FPGA_QUEUE + 1) +// + a varying number of ticks in the FPGA Delay Queue (mod_sig_buf) +#define DELAY_ARM2AIR_AS_TAG (4*16 + 8 + 8*16 + 8 + 16 + 1 + DELAY_FPGA_QUEUE) // When the PM acts as sniffer and is receiving tag data, it takes // 3 ticks A/D conversion @@ -122,26 +180,6 @@ static uint32_t LastProxToAirDuration; #define SEC_Y 0x00 #define SEC_Z 0xc0 -const uint8_t OddByteParity[256] = { - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 0, 1, 1, 0, 1, 0, 0, 1, 1, 0, 0, 1, 0, 1, 1, 0, - 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1 -}; - - void iso14a_set_trigger(bool enable) { trigger = enable; } @@ -153,7 +191,7 @@ void iso14a_set_timeout(uint32_t timeout) { } -void iso14a_set_ATS_timeout(uint8_t *ats) { +static void iso14a_set_ATS_timeout(uint8_t *ats) { uint8_t tb1; uint8_t fwi; @@ -179,11 +217,6 @@ void iso14a_set_ATS_timeout(uint8_t *ats) { // Generate the parity value for a byte sequence // //----------------------------------------------------------------------------- -byte_t oddparity (const byte_t bt) -{ - return OddByteParity[bt]; -} - void GetParity(const uint8_t *pbtCmd, uint16_t iLen, uint8_t *par) { uint16_t paritybit_cnt = 0; @@ -192,7 +225,7 @@ void GetParity(const uint8_t *pbtCmd, uint16_t iLen, uint8_t *par) for (uint16_t i = 0; i < iLen; i++) { // Generate the parity bits - parityBits |= ((OddByteParity[pbtCmd[i]]) << (7-paritybit_cnt)); + parityBits |= ((oddparity8(pbtCmd[i])) << (7-paritybit_cnt)); if (paritybit_cnt == 7) { par[paritybyte_cnt] = parityBits; // save 8 Bits parity parityBits = 0; // and advance to next Parity Byte @@ -213,7 +246,7 @@ void AppendCrc14443a(uint8_t* data, int len) ComputeCrc14443(CRC_14443_A,data,len,data+len,data+len+1); } -void AppendCrc14443b(uint8_t* data, int len) +static void AppendCrc14443b(uint8_t* data, int len) { ComputeCrc14443(CRC_14443_B,data,len,data+len,data+len+1); } @@ -244,13 +277,13 @@ static tUart Uart; // 0111 - a 2 tick wide pause shifted left // 1001 - a 2 tick wide pause shifted right const bool Mod_Miller_LUT[] = { - FALSE, TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, TRUE, - FALSE, TRUE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE + false, true, false, true, false, false, false, true, + false, true, false, false, false, false, false, false }; #define IsMillerModulationNibble1(b) (Mod_Miller_LUT[(b & 0x000000F0) >> 4]) #define IsMillerModulationNibble2(b) (Mod_Miller_LUT[(b & 0x0000000F)]) -void UartReset() +static void UartReset() { Uart.state = STATE_UNSYNCD; Uart.bitCount = 0; @@ -262,7 +295,7 @@ void UartReset() Uart.endTime = 0; } -void UartInit(uint8_t *data, uint8_t *parity) +static void UartInit(uint8_t *data, uint8_t *parity) { Uart.output = data; Uart.parity = parity; @@ -355,13 +388,13 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time) Uart.parityBits <<= 1; // add a (void) parity bit Uart.parityBits <<= (8 - (Uart.len&0x0007)); // left align parity bits Uart.parity[Uart.parityLen++] = Uart.parityBits; // and store it - return TRUE; + return true; } else if (Uart.len & 0x0007) { // there are some parity bits to store Uart.parityBits <<= (8 - (Uart.len&0x0007)); // left align remaining parity bits Uart.parity[Uart.parityLen++] = Uart.parityBits; // and store them } if (Uart.len) { - return TRUE; // we are finished with decoding the raw data sequence + return true; // we are finished with decoding the raw data sequence } else { UartReset(); // Nothing received - start over } @@ -389,7 +422,7 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time) } - return FALSE; // not finished yet, need more data + return false; // not finished yet, need more data } @@ -414,15 +447,15 @@ static tDemod Demod; // Lookup-Table to decide if 4 raw bits are a modulation. // We accept three or four "1" in any position const bool Mod_Manchester_LUT[] = { - FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, FALSE, TRUE, - FALSE, FALSE, FALSE, TRUE, FALSE, TRUE, TRUE, TRUE + false, false, false, false, false, false, false, true, + false, false, false, true, false, true, true, true }; #define IsManchesterModulationNibble1(b) (Mod_Manchester_LUT[(b & 0x00F0) >> 4]) #define IsManchesterModulationNibble2(b) (Mod_Manchester_LUT[(b & 0x000F)]) -void DemodReset() +static void DemodReset() { Demod.state = DEMOD_UNSYNCD; Demod.len = 0; // number of decoded data bytes @@ -436,7 +469,7 @@ void DemodReset() Demod.endTime = 0; } -void DemodInit(uint8_t *data, uint8_t *parity) +static void DemodInit(uint8_t *data, uint8_t *parity) { Demod.output = data; Demod.parity = parity; @@ -520,13 +553,13 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non Demod.parityBits <<= 1; // add a (void) parity bit Demod.parityBits <<= (8 - (Demod.len&0x0007)); // left align remaining parity bits Demod.parity[Demod.parityLen++] = Demod.parityBits; // and store them - return TRUE; + return true; } else if (Demod.len & 0x0007) { // there are some parity bits to store Demod.parityBits <<= (8 - (Demod.len&0x0007)); // left align remaining parity bits Demod.parity[Demod.parityLen++] = Demod.parityBits; // and store them } if (Demod.len) { - return TRUE; // we are finished with decoding the raw data sequence + return true; // we are finished with decoding the raw data sequence } else { // nothing received. Start over DemodReset(); } @@ -535,7 +568,7 @@ static RAMFUNC int ManchesterDecoding(uint8_t bit, uint16_t offset, uint32_t non } - return FALSE; // not finished yet, need more data + return false; // not finished yet, need more data } //============================================================================= @@ -574,14 +607,14 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { // init trace buffer clear_trace(); - set_tracing(TRUE); + set_tracing(true); uint8_t *data = dmaBuf; uint8_t previous_data = 0; int maxDataLen = 0; int dataLen = 0; - bool TagIsActive = FALSE; - bool ReaderIsActive = FALSE; + bool TagIsActive = false; + bool ReaderIsActive = false; // Set up the demodulator for tag -> reader responses. DemodInit(receivedResponse, receivedResponsePar); @@ -595,11 +628,11 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { // 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 // response from the tag. - // triggered == FALSE -- to wait first for card + // triggered == false -- to wait first for card bool triggered = !(param & 0x03); // And now we loop, receiving samples. - for(uint32_t rsamples = 0; TRUE; ) { + for(uint32_t rsamples = 0; true; ) { if(BUTTON_PRESS()) { DbpString("cancelled by button"); @@ -648,7 +681,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { LED_C_ON(); // check - if there is a short 7bit request from reader - if ((!triggered) && (param & 0x02) && (Uart.len == 1) && (Uart.bitCount == 7)) triggered = TRUE; + if ((!triggered) && (param & 0x02) && (Uart.len == 1) && (Uart.bitCount == 7)) triggered = true; if(triggered) { if (!LogTrace(receivedCmd, @@ -656,7 +689,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { Uart.startTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, Uart.parity, - TRUE)) break; + true)) break; } /* And ready to receive another command. */ UartReset(); @@ -678,9 +711,9 @@ void RAMFUNC SnoopIso14443a(uint8_t param) { Demod.startTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER, Demod.endTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER, Demod.parity, - FALSE)) break; + false)) break; - if ((!triggered) && (param & 0x01)) triggered = TRUE; + if ((!triggered) && (param & 0x01)) triggered = true; // And ready to receive another response. DemodReset(); @@ -760,14 +793,6 @@ static void CodeIso14443aAsTagPar(const uint8_t *cmd, uint16_t len, uint8_t *par ToSendMax++; } -static void CodeIso14443aAsTag(const uint8_t *cmd, uint16_t len) -{ - uint8_t par[MAX_PARITY_SIZE]; - - GetParity(cmd, len, par); - CodeIso14443aAsTagPar(cmd, len, par); -} - static void Code4bitAnswerAsTag(uint8_t cmd) { @@ -807,10 +832,42 @@ static void Code4bitAnswerAsTag(uint8_t cmd) ToSendMax++; } + +static uint8_t *LastReaderTraceTime = NULL; + +static void EmLogTraceReader(void) { + // remember last reader trace start to fix timing info later + LastReaderTraceTime = BigBuf_get_addr() + BigBuf_get_traceLen(); + LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true); +} + + +static void FixLastReaderTraceTime(uint32_t tag_StartTime) { + uint32_t reader_EndTime = Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG; + uint32_t reader_StartTime = Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG; + uint16_t reader_modlen = reader_EndTime - reader_StartTime; + uint16_t approx_fdt = tag_StartTime - reader_EndTime; + uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20; + reader_StartTime = tag_StartTime - exact_fdt - reader_modlen; + LastReaderTraceTime[0] = (reader_StartTime >> 0) & 0xff; + LastReaderTraceTime[1] = (reader_StartTime >> 8) & 0xff; + LastReaderTraceTime[2] = (reader_StartTime >> 16) & 0xff; + LastReaderTraceTime[3] = (reader_StartTime >> 24) & 0xff; +} + + +static void EmLogTraceTag(uint8_t *tag_data, uint16_t tag_len, uint8_t *tag_Parity, uint32_t ProxToAirDuration) { + uint32_t tag_StartTime = LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG; + uint32_t tag_EndTime = (LastTimeProxToAirStart + ProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG; + LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, false); + FixLastReaderTraceTime(tag_StartTime); +} + + //----------------------------------------------------------------------------- // Wait for commands from reader // Stop when button is pressed -// Or return TRUE when command is captured +// Or return true when command is captured //----------------------------------------------------------------------------- static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int *len) { @@ -829,39 +886,28 @@ static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int for(;;) { WDT_HIT(); - if(BUTTON_PRESS()) return FALSE; + if(BUTTON_PRESS()) return false; if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) { b = (uint8_t)AT91C_BASE_SSC->SSC_RHR; if(MillerDecoding(b, 0)) { *len = Uart.len; - return TRUE; + EmLogTraceReader(); + return true; } } } } -static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNeeded); -int EmSend4bitEx(uint8_t resp, bool correctionNeeded); + +static int EmSend4bitEx(uint8_t resp, bool correctionNeeded); int EmSend4bit(uint8_t resp); -int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8_t *par); +static int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8_t *par); int EmSendCmdEx(uint8_t *resp, uint16_t respLen, bool correctionNeeded); -int EmSendCmd(uint8_t *resp, uint16_t respLen); -int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par); -bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint8_t *reader_Parity, - uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint8_t *tag_Parity); +int EmSendPrecompiledCmd(tag_response_info_t *response_info, bool correctionNeeded); -static uint8_t* free_buffer_pointer; -typedef struct { - uint8_t* response; - size_t response_n; - uint8_t* modulation; - size_t modulation_n; - uint32_t ProxToAirDuration; -} tag_response_info_t; - -bool prepare_tag_modulation(tag_response_info_t* response_info, size_t max_buffer_size) { +static bool prepare_tag_modulation(tag_response_info_t* response_info, size_t max_buffer_size) { // Example response, answer to MIFARE Classic read block will be 16 bytes + 2 CRC = 18 bytes // This will need the following byte array for a modulation sequence // 144 data bits (18 * 8) @@ -875,17 +921,18 @@ bool prepare_tag_modulation(tag_response_info_t* response_info, size_t max_buffe // Prepare the tag modulation bits from the message - CodeIso14443aAsTag(response_info->response,response_info->response_n); + GetParity(response_info->response, response_info->response_n, &(response_info->par)); + CodeIso14443aAsTagPar(response_info->response,response_info->response_n, &(response_info->par)); // Make sure we do not exceed the free buffer space if (ToSendMax > max_buffer_size) { Dbprintf("Out of memory, when modulating bits for tag answer:"); - Dbhexdump(response_info->response_n,response_info->response,false); + Dbhexdump(response_info->response_n, response_info->response, false); return false; } // Copy the byte array, used for this modulation to the buffer position - memcpy(response_info->modulation,ToSend,ToSendMax); + memcpy(response_info->modulation, ToSend, ToSendMax); // Store the number of bytes that were used for encoding/modulation and the time needed to transfer them response_info->modulation_n = ToSendMax; @@ -897,21 +944,20 @@ bool prepare_tag_modulation(tag_response_info_t* response_info, size_t max_buffe // "precompile" responses. There are 7 predefined responses with a total of 28 bytes data to transmit. // Coded responses need one byte per bit to transfer (data, parity, start, stop, correction) -// 28 * 8 data bits, 28 * 1 parity bits, 7 start bits, 7 stop bits, 7 correction bits +// 28 * 8 data bits, 28 * 1 parity bits, 7 start bits, 7 stop bits, 7 correction bits for the modulation // -> need 273 bytes buffer #define ALLOCATED_TAG_MODULATION_BUFFER_SIZE 273 -bool prepare_allocated_tag_modulation(tag_response_info_t* response_info) { +bool prepare_allocated_tag_modulation(tag_response_info_t* response_info, uint8_t **buffer, size_t *max_buffer_size) { + // Retrieve and store the current buffer index - response_info->modulation = free_buffer_pointer; - - // Determine the maximum size we can use from our buffer - size_t max_buffer_size = ALLOCATED_TAG_MODULATION_BUFFER_SIZE; + response_info->modulation = *buffer; // Forward the prepare tag modulation function to the inner function - if (prepare_tag_modulation(response_info, max_buffer_size)) { - // Update the free buffer offset - free_buffer_pointer += ToSendMax; + if (prepare_tag_modulation(response_info, *max_buffer_size)) { + // Update the free buffer offset and the remaining buffer size + *buffer += ToSendMax; + *max_buffer_size -= ToSendMax; return true; } else { return false; @@ -1041,16 +1087,16 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) // allocate buffers: uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE); uint8_t *receivedCmdPar = BigBuf_malloc(MAX_PARITY_SIZE); - free_buffer_pointer = BigBuf_malloc(ALLOCATED_TAG_MODULATION_BUFFER_SIZE); - + uint8_t *free_buffer_pointer = BigBuf_malloc(ALLOCATED_TAG_MODULATION_BUFFER_SIZE); + size_t free_buffer_size = ALLOCATED_TAG_MODULATION_BUFFER_SIZE; // clear trace clear_trace(); - set_tracing(TRUE); + set_tracing(true); // Prepare the responses of the anticollision phase // there will be not enough time to do this at the moment the reader sends it REQA for (size_t i=0; imodulation, p_response->modulation_n, receivedCmd[0] == 0x52); - // do the tracing for the previous reader request and this tag answer: - uint8_t par[MAX_PARITY_SIZE]; - GetParity(p_response->response, p_response->response_n, par); - - EmLogTrace(Uart.output, - Uart.len, - Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, - Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, - Uart.parity, - p_response->response, - p_response->response_n, - LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG, - (LastTimeProxToAirStart + p_response->ProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, - par); + EmSendPrecompiledCmd(p_response, receivedCmd[0] == 0x52); } if (!tracing) { @@ -1229,7 +1248,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data) // prepare a delayed transfer. This simply shifts ToSend[] by a number // of bits specified in the delay parameter. -void PrepareDelayedTransfer(uint16_t delay) +static void PrepareDelayedTransfer(uint16_t delay) { uint8_t bitmask = 0; uint8_t bits_to_shift = 0; @@ -1302,7 +1321,7 @@ static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing //----------------------------------------------------------------------------- // Prepare reader command (in bits, support short frames) to send to FPGA //----------------------------------------------------------------------------- -void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8_t *parity) +static void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8_t *parity) { int i, j; int last; @@ -1380,21 +1399,13 @@ void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8 ToSendMax++; } -//----------------------------------------------------------------------------- -// Prepare reader command to send to FPGA -//----------------------------------------------------------------------------- -void CodeIso14443aAsReaderPar(const uint8_t *cmd, uint16_t len, const uint8_t *parity) -{ - CodeIso14443aBitsAsReaderPar(cmd, len*8, parity); -} - //----------------------------------------------------------------------------- // Wait for commands from reader // Stop when button is pressed (return 1) or field was gone (return 2) // Or return 0 when command is captured //----------------------------------------------------------------------------- -static int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity) +int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity) { *len = 0; @@ -1452,6 +1463,7 @@ static int EmGetCmd(uint8_t *received, uint16_t *len, uint8_t *parity) b = (uint8_t)AT91C_BASE_SSC->SSC_RHR; if(MillerDecoding(b, 0)) { *len = Uart.len; + EmLogTraceReader(); return 0; } } @@ -1464,14 +1476,13 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNe { uint8_t b; uint16_t i = 0; - uint32_t ThisTransferTime; // Modulate Manchester FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD); // include correction bit if necessary if (Uart.parityBits & 0x01) { - correctionNeeded = TRUE; + correctionNeeded = true; } if(correctionNeeded) { // 1236, so correction bit needed @@ -1492,10 +1503,7 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNe if (AT91C_BASE_SSC->SSC_RHR) break; } - while ((ThisTransferTime = GetCountSspClk()) & 0x00000007); - - // Clear TXRDY: - AT91C_BASE_SSC->SSC_THR = SEC_F; + LastTimeProxToAirStart = (GetCountSspClk() & 0xfffffff8) + (correctionNeeded?8:0); // send cycle for(; i < respLen; ) { @@ -1511,7 +1519,7 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNe // Ensure that the FPGA Delay Queue is empty before we switch to TAGSIM_LISTEN again: uint8_t fpga_queued_bits = FpgaSendQueueDelay >> 3; - for (i = 0; i <= fpga_queued_bits/8 + 1; ) { + for (i = 0; i < fpga_queued_bits/8; ) { if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) { AT91C_BASE_SSC->SSC_THR = SEC_F; FpgaSendQueueDelay = (uint8_t)AT91C_BASE_SSC->SSC_RHR; @@ -1519,91 +1527,64 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNe } } - LastTimeProxToAirStart = ThisTransferTime + (correctionNeeded?8:0); - return 0; } -int EmSend4bitEx(uint8_t resp, bool correctionNeeded){ + +static int EmSend4bitEx(uint8_t resp, bool correctionNeeded){ Code4bitAnswerAsTag(resp); int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded); // do the tracing for the previous reader request and this tag answer: - uint8_t par[1]; - GetParity(&resp, 1, par); - EmLogTrace(Uart.output, - Uart.len, - Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, - Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, - Uart.parity, - &resp, - 1, - LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG, - (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, - par); + EmLogTraceTag(&resp, 1, NULL, LastProxToAirDuration); return res; } + int EmSend4bit(uint8_t resp){ return EmSend4bitEx(resp, false); } -int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8_t *par){ + +static int EmSendCmdExPar(uint8_t *resp, uint16_t respLen, bool correctionNeeded, uint8_t *par){ CodeIso14443aAsTagPar(resp, respLen, par); int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded); // do the tracing for the previous reader request and this tag answer: - EmLogTrace(Uart.output, - Uart.len, - Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, - Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, - Uart.parity, - resp, - respLen, - LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_TAG, - (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_TAG, - par); + EmLogTraceTag(resp, respLen, par, LastProxToAirDuration); return res; } + int EmSendCmdEx(uint8_t *resp, uint16_t respLen, bool correctionNeeded){ uint8_t par[MAX_PARITY_SIZE]; GetParity(resp, respLen, par); return EmSendCmdExPar(resp, respLen, correctionNeeded, par); } + int EmSendCmd(uint8_t *resp, uint16_t respLen){ uint8_t par[MAX_PARITY_SIZE]; GetParity(resp, respLen, par); return EmSendCmdExPar(resp, respLen, false, par); } + int EmSendCmdPar(uint8_t *resp, uint16_t respLen, uint8_t *par){ return EmSendCmdExPar(resp, respLen, false, par); } -bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_StartTime, uint32_t reader_EndTime, uint8_t *reader_Parity, - uint8_t *tag_data, uint16_t tag_len, uint32_t tag_StartTime, uint32_t tag_EndTime, uint8_t *tag_Parity) -{ - if (tracing) { - // we cannot exactly measure the end and start of a received command from reader. However we know that the delay from - // end of the received command to start of the tag's (simulated by us) answer is n*128+20 or n*128+84 resp. - // with n >= 9. The start of the tags answer can be measured and therefore the end of the received command be calculated: - uint16_t reader_modlen = reader_EndTime - reader_StartTime; - uint16_t approx_fdt = tag_StartTime - reader_EndTime; - uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20; - reader_EndTime = tag_StartTime - exact_fdt; - reader_StartTime = reader_EndTime - reader_modlen; - if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE)) { - return FALSE; - } else return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE)); - } else { - return TRUE; - } + +int EmSendPrecompiledCmd(tag_response_info_t *response_info, bool correctionNeeded) { + int ret = EmSendCmd14443aRaw(response_info->modulation, response_info->modulation_n, correctionNeeded); + // do the tracing for the previous reader request and this tag answer: + EmLogTraceTag(response_info->response, response_info->response_n, &(response_info->par), response_info->ProxToAirDuration); + return ret; } + //----------------------------------------------------------------------------- // Wait a certain time for tag response -// If a response is captured return TRUE -// If it takes too long return FALSE +// If a response is captured return true +// If it takes too long return false //----------------------------------------------------------------------------- static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receivedResponsePar, uint16_t offset) { @@ -1629,9 +1610,9 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receive b = (uint8_t)AT91C_BASE_SSC->SSC_RHR; if(ManchesterDecoding(b, offset, 0)) { NextTransferTime = MAX(NextTransferTime, Demod.endTime - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/16 + FRAME_DELAY_TIME_PICC_TO_PCD); - return TRUE; + return true; } else if (c++ > iso14a_timeout && Demod.state == DEMOD_UNSYNCD) { - return FALSE; + return false; } } } @@ -1649,7 +1630,7 @@ void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t // Log reader command in trace buffer if (tracing) { - LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, TRUE); + LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, true); } } @@ -1660,7 +1641,7 @@ void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *tim } -void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing) +static void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing) { // Generate parity and redirect uint8_t par[MAX_PARITY_SIZE]; @@ -1677,28 +1658,33 @@ void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing) ReaderTransmitBitsPar(frame, len*8, par, timing); } -int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity) + +static int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity) { - if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) return FALSE; + if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) return false; if (tracing) { - LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE); + LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, false); } return Demod.len; } + int ReaderReceive(uint8_t *receivedAnswer, uint8_t *parity) { - if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return FALSE; + if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return false; if (tracing) { - LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE); + LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, false); } return Demod.len; } -/* performs iso14443a anticollision procedure - * fills the uid pointer unless NULL - * fills resp_data unless NULL */ -int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, uint32_t *cuid_ptr) { +// performs iso14443a anticollision (optional) and card select procedure +// fills the uid and cuid pointer unless NULL +// fills the card info record unless NULL +// if anticollision is false, then the UID must be provided in uid_ptr[] +// and num_cascades must be set (1: 4 Byte UID, 2: 7 Byte UID, 3: 10 Byte UID) +// requests ATS unless no_rats is true +int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, uint32_t *cuid_ptr, bool anticollision, uint8_t num_cascades, bool no_rats) { uint8_t wupa[] = { 0x52 }; // 0x26 - REQA 0x52 - WAKE-UP uint8_t sel_all[] = { 0x93,0x20 }; uint8_t sel_uid[] = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00}; @@ -1713,7 +1699,7 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u int len; // Broadcast for a card, WUPA (0x52) will force response from all cards in the field - ReaderTransmitBitsPar(wupa,7,0, NULL); + ReaderTransmitBitsPar(wupa, 7, NULL, NULL); // Receive the ATQA if(!ReaderReceive(resp, resp_par)) return 0; @@ -1724,9 +1710,11 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u memset(p_hi14a_card->uid,0,10); } - // clear uid - if (uid_ptr) { - memset(uid_ptr,0,10); + if (anticollision) { + // clear uid + if (uid_ptr) { + memset(uid_ptr,0,10); + } } // check for proprietary anticollision: @@ -1741,40 +1729,49 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // SELECT_* (L1: 0x93, L2: 0x95, L3: 0x97) sel_uid[0] = sel_all[0] = 0x93 + cascade_level * 2; - // SELECT_ALL - ReaderTransmit(sel_all, sizeof(sel_all), NULL); - if (!ReaderReceive(resp, resp_par)) return 0; - - if (Demod.collisionPos) { // we had a collision and need to construct the UID bit by bit - memset(uid_resp, 0, 4); - uint16_t uid_resp_bits = 0; - uint16_t collision_answer_offset = 0; - // anti-collision-loop: - while (Demod.collisionPos) { - Dbprintf("Multiple tags detected. Collision after Bit %d", Demod.collisionPos); - for (uint16_t i = collision_answer_offset; i < Demod.collisionPos; i++, uid_resp_bits++) { // add valid UID bits before collision point - uint16_t UIDbit = (resp[i/8] >> (i % 8)) & 0x01; - uid_resp[uid_resp_bits / 8] |= UIDbit << (uid_resp_bits % 8); + if (anticollision) { + // SELECT_ALL + ReaderTransmit(sel_all, sizeof(sel_all), NULL); + if (!ReaderReceive(resp, resp_par)) return 0; + + if (Demod.collisionPos) { // we had a collision and need to construct the UID bit by bit + memset(uid_resp, 0, 4); + uint16_t uid_resp_bits = 0; + uint16_t collision_answer_offset = 0; + // anti-collision-loop: + while (Demod.collisionPos) { + Dbprintf("Multiple tags detected. Collision after Bit %d", Demod.collisionPos); + for (uint16_t i = collision_answer_offset; i < Demod.collisionPos; i++, uid_resp_bits++) { // add valid UID bits before collision point + uint16_t UIDbit = (resp[i/8] >> (i % 8)) & 0x01; + uid_resp[uid_resp_bits / 8] |= UIDbit << (uid_resp_bits % 8); + } + uid_resp[uid_resp_bits/8] |= 1 << (uid_resp_bits % 8); // next time select the card(s) with a 1 in the collision position + uid_resp_bits++; + // construct anticollosion command: + sel_uid[1] = ((2 + uid_resp_bits/8) << 4) | (uid_resp_bits & 0x07); // length of data in bytes and bits + for (uint16_t i = 0; i <= uid_resp_bits/8; i++) { + sel_uid[2+i] = uid_resp[i]; + } + collision_answer_offset = uid_resp_bits%8; + ReaderTransmitBits(sel_uid, 16 + uid_resp_bits, NULL); + if (!ReaderReceiveOffset(resp, collision_answer_offset, resp_par)) return 0; } - uid_resp[uid_resp_bits/8] |= 1 << (uid_resp_bits % 8); // next time select the card(s) with a 1 in the collision position - uid_resp_bits++; - // construct anticollosion command: - sel_uid[1] = ((2 + uid_resp_bits/8) << 4) | (uid_resp_bits & 0x07); // length of data in bytes and bits - for (uint16_t i = 0; i <= uid_resp_bits/8; i++) { - sel_uid[2+i] = uid_resp[i]; + // finally, add the last bits and BCC of the UID + for (uint16_t i = collision_answer_offset; i < (Demod.len-1)*8; i++, uid_resp_bits++) { + uint16_t UIDbit = (resp[i/8] >> (i%8)) & 0x01; + uid_resp[uid_resp_bits/8] |= UIDbit << (uid_resp_bits % 8); } - collision_answer_offset = uid_resp_bits%8; - ReaderTransmitBits(sel_uid, 16 + uid_resp_bits, NULL); - if (!ReaderReceiveOffset(resp, collision_answer_offset, resp_par)) return 0; + + } else { // no collision, use the response to SELECT_ALL as current uid + memcpy(uid_resp, resp, 4); } - // finally, add the last bits and BCC of the UID - for (uint16_t i = collision_answer_offset; i < (Demod.len-1)*8; i++, uid_resp_bits++) { - uint16_t UIDbit = (resp[i/8] >> (i%8)) & 0x01; - uid_resp[uid_resp_bits/8] |= UIDbit << (uid_resp_bits % 8); + } else { + if (cascade_level < num_cascades - 1) { + uid_resp[0] = 0x88; + memcpy(uid_resp+1, uid_ptr+cascade_level*3, 3); + } else { + memcpy(uid_resp, uid_ptr+cascade_level*3, 4); } - - } else { // no collision, use the response to SELECT_ALL as current uid - memcpy(uid_resp, resp, 4); } uid_resp_len = 4; @@ -1785,7 +1782,7 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // Construct SELECT UID command sel_uid[1] = 0x70; // transmitting a full UID (1 Byte cmd, 1 Byte NVB, 4 Byte UID, 1 Byte BCC, 2 Bytes CRC) - memcpy(sel_uid+2, uid_resp, 4); // the UID + memcpy(sel_uid+2, uid_resp, 4); // the UID received during anticollision, or the provided UID sel_uid[6] = sel_uid[2] ^ sel_uid[3] ^ sel_uid[4] ^ sel_uid[5]; // calculate and add BCC AppendCrc14443a(sel_uid, 7); // calculate and add CRC ReaderTransmit(sel_uid, sizeof(sel_uid), NULL); @@ -1793,19 +1790,18 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // Receive the SAK if (!ReaderReceive(resp, resp_par)) return 0; sak = resp[0]; - - // Test if more parts of the uid are coming + + // Test if more parts of the uid are coming if ((sak & 0x04) /* && uid_resp[0] == 0x88 */) { // Remove first byte, 0x88 is not an UID byte, it CT, see page 3 of: // http://www.nxp.com/documents/application_note/AN10927.pdf uid_resp[0] = uid_resp[1]; uid_resp[1] = uid_resp[2]; uid_resp[2] = uid_resp[3]; - uid_resp_len = 3; } - if(uid_ptr) { + if(uid_ptr && anticollision) { memcpy(uid_ptr + (cascade_level*3), uid_resp, uid_resp_len); } @@ -1823,27 +1819,28 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u // non iso14443a compliant tag if( (sak & 0x20) == 0) return 2; - // Request for answer to select - AppendCrc14443a(rats, 2); - ReaderTransmit(rats, sizeof(rats), NULL); + if (!no_rats) { + // Request for answer to select + AppendCrc14443a(rats, 2); + ReaderTransmit(rats, sizeof(rats), NULL); - if (!(len = ReaderReceive(resp, resp_par))) return 0; - - - if(p_hi14a_card) { - memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats)); - p_hi14a_card->ats_len = len; - } + if (!(len = ReaderReceive(resp, resp_par))) return 0; - // reset the PCB block number - iso14_pcb_blocknum = 0; + if(p_hi14a_card) { + memcpy(p_hi14a_card->ats, resp, len); + p_hi14a_card->ats_len = len; + } - // set default timeout based on ATS - iso14a_set_ATS_timeout(resp); + // reset the PCB block number + iso14_pcb_blocknum = 0; + // set default timeout based on ATS + iso14a_set_ATS_timeout(resp); + } return 1; } + void iso14443a_setup(uint8_t fpga_minor_mode) { FpgaDownloadAndGo(FPGA_BITSTREAM_HF); // Set up the synchronous serial port @@ -1866,9 +1863,10 @@ void iso14443a_setup(uint8_t fpga_minor_mode) { DemodReset(); UartReset(); NextTransferTime = 2*DELAY_ARM2AIR_AS_READER; - iso14a_set_timeout(1050); // 10ms default + iso14a_set_timeout(1060); // 10ms default } + int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) { uint8_t parity[MAX_PARITY_SIZE]; uint8_t real_cmd[cmd_len+4]; @@ -1897,6 +1895,7 @@ int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) { return len; } + //----------------------------------------------------------------------------- // Read an ISO 14443a tag. Send out commands and store answers. // @@ -1911,23 +1910,32 @@ void ReaderIso14443a(UsbCommand *c) uint32_t arg0 = 0; byte_t buf[USB_CMD_DATA_SIZE]; uint8_t par[MAX_PARITY_SIZE]; + bool cantSELECT = false; if(param & ISO14A_CONNECT) { clear_trace(); } - set_tracing(TRUE); + set_tracing(true); if(param & ISO14A_REQUEST_TRIGGER) { - iso14a_set_trigger(TRUE); + iso14a_set_trigger(true); } if(param & ISO14A_CONNECT) { + LED_A_ON(); + clear_trace(); iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN); if(!(param & ISO14A_NO_SELECT)) { iso14a_card_select_t *card = (iso14a_card_select_t*)buf; - arg0 = iso14443a_select_card(NULL,card,NULL); + arg0 = iso14443a_select_card(NULL, card, NULL, true, 0, param & ISO14A_NO_RATS); + + // if we cant select then we cant send data + cantSELECT = (arg0 != 1); + + LED_B_ON(); cmd_send(CMD_ACK,arg0,card->uidlen,0,buf,sizeof(iso14a_card_select_t)); + LED_B_OFF(); } } @@ -1935,12 +1943,14 @@ void ReaderIso14443a(UsbCommand *c) iso14a_set_timeout(timeout); } - if(param & ISO14A_APDU) { + if(param & ISO14A_APDU && !cantSELECT) { arg0 = iso14_apdu(cmd, len, buf); + LED_B_ON(); cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf)); + LED_B_OFF(); } - if(param & ISO14A_RAW) { + if(param & ISO14A_RAW && !cantSELECT) { if(param & ISO14A_APPEND_CRC) { if(param & ISO14A_TOPAZMODE) { AppendCrc14443b(cmd,len); @@ -1976,11 +1986,14 @@ void ReaderIso14443a(UsbCommand *c) } } arg0 = ReaderReceive(buf, par); + + LED_B_ON(); cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf)); + LED_B_OFF(); } if(param & ISO14A_REQUEST_TRIGGER) { - iso14a_set_trigger(FALSE); + iso14a_set_trigger(false); } if(param & ISO14A_NO_DISCONNECT) { @@ -1995,7 +2008,7 @@ void ReaderIso14443a(UsbCommand *c) // Determine the distance between two nonces. // Assume that the difference is small, but we don't know which is first. // Therefore try in alternating directions. -int32_t dist_nt(uint32_t nt1, uint32_t nt2) { +static int32_t dist_nt(uint32_t nt1, uint32_t nt2) { uint16_t i; uint32_t nttmp1, nttmp2; @@ -2040,12 +2053,12 @@ void ReaderMifare(bool first_try) BigBuf_free(); clear_trace(); - set_tracing(TRUE); + set_tracing(true); byte_t nt_diff = 0; uint8_t par[1] = {0}; // maximum 8 Bytes to be sent here, 1 byte parity is therefore enough static byte_t par_low = 0; - bool led_on = TRUE; + bool led_on = true; uint8_t uid[10] ={0}; uint32_t cuid; @@ -2095,7 +2108,7 @@ void ReaderMifare(bool first_try) uint32_t select_time; uint32_t halt_time; - for(uint16_t i = 0; TRUE; i++) { + for(uint16_t i = 0; true; i++) { LED_C_ON(); WDT_HIT(); @@ -2123,7 +2136,7 @@ void ReaderMifare(bool first_try) SpinDelay(100); } - if(!iso14443a_select_card(uid, NULL, &cuid)) { + if(!iso14443a_select_card(uid, NULL, &cuid, true, 0, true)) { if (MF_DBGLEVEL >= 1) Dbprintf("Mifare: Can't select card"); continue; } @@ -2304,547 +2317,9 @@ void ReaderMifare(bool first_try) FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); LEDsoff(); - set_tracing(FALSE); + set_tracing(false); } -typedef struct { - uint32_t cuid; - uint8_t sector; - uint8_t keytype; - uint32_t nonce; - uint32_t ar; - uint32_t nr; - uint32_t nonce2; - uint32_t ar2; - uint32_t nr2; -} nonces_t; - -/** - *MIFARE 1K simulate. - * - *@param flags : - * FLAG_INTERACTIVE - In interactive mode, we are expected to finish the operation with an ACK - * 4B_FLAG_UID_IN_DATA - means that there is a 4-byte UID in the data-section, we're expected to use that - * 7B_FLAG_UID_IN_DATA - means that there is a 7-byte UID in the data-section, we're expected to use that - * FLAG_NR_AR_ATTACK - means we should collect NR_AR responses for bruteforcing later - *@param exitAfterNReads, exit simulation after n blocks have been read, 0 is inifite - */ -void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain) -{ - int cardSTATE = MFEMUL_NOFIELD; - int _7BUID = 0; - int vHf = 0; // in mV - int res; - uint32_t selTimer = 0; - uint32_t authTimer = 0; - uint16_t len = 0; - uint8_t cardWRBL = 0; - uint8_t cardAUTHSC = 0; - uint8_t cardAUTHKEY = 0xff; // no authentication - uint32_t cardRr = 0; - uint32_t cuid = 0; - //uint32_t rn_enc = 0; - uint32_t ans = 0; - uint32_t cardINTREG = 0; - uint8_t cardINTBLOCK = 0; - struct Crypto1State mpcs = {0, 0}; - struct Crypto1State *pcs; - pcs = &mpcs; - uint32_t numReads = 0;//Counts numer of times reader read a block - uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE]; - uint8_t receivedCmd_par[MAX_MIFARE_PARITY_SIZE]; - uint8_t response[MAX_MIFARE_FRAME_SIZE]; - uint8_t response_par[MAX_MIFARE_PARITY_SIZE]; - - uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID - uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; - uint8_t rUIDBCC2[] = {0xde, 0xad, 0xbe, 0xaf, 0x62}; // !!! - uint8_t rSAK[] = {0x08, 0xb6, 0xdd}; - uint8_t rSAK1[] = {0x04, 0xda, 0x17}; - - uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04}; - uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00}; - - //Here, we collect UID,sector,keytype,NT,AR,NR,NT2,AR2,NR2 - // This can be used in a reader-only attack. - // (it can also be retrieved via 'hf 14a list', but hey... - - //allow collecting up to 4 sets of nonces to allow recovery of 4 keys (2 keyA & 2 keyB) - // must be set in multiples of 2 (for 1 keyA and 1 keyB) - #define ATTACK_KEY_COUNT 4 - nonces_t ar_nr_resp[ATTACK_KEY_COUNT]; - memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp)); - - uint8_t ar_nr_collected[ATTACK_KEY_COUNT]; - memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected)); - // Authenticate response - nonce - uint32_t nonce = bytes_to_num(rAUTH_NT, 4); - - //-- Determine the UID - // Can be set from emulator memory, incoming data - // and can be 7 or 4 bytes long - if (flags & FLAG_4B_UID_IN_DATA) - { - // 4B uid comes from data-portion of packet - memcpy(rUIDBCC1,datain,4); - rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3]; - - } else if (flags & FLAG_7B_UID_IN_DATA) { - // 7B uid comes from data-portion of packet - memcpy(&rUIDBCC1[1],datain,3); - memcpy(rUIDBCC2, datain+3, 4); - _7BUID = true; - } else { - // get UID from emul memory - emlGetMemBt(receivedCmd, 7, 1); - _7BUID = !(receivedCmd[0] == 0x00); - if (!_7BUID) { // ---------- 4BUID - emlGetMemBt(rUIDBCC1, 0, 4); - } else { // ---------- 7BUID - emlGetMemBt(&rUIDBCC1[1], 0, 3); - emlGetMemBt(rUIDBCC2, 3, 4); - } - } - - /* - * Regardless of what method was used to set the UID, set fifth byte and modify - * the ATQA for 4 or 7-byte UID - */ - rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3]; - if (_7BUID) { - rATQA[0] = 0x44; - rUIDBCC1[0] = 0x88; - rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3]; - rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3]; - } - - if (MF_DBGLEVEL >= 1) { - if (!_7BUID) { - Dbprintf("4B UID: %02x%02x%02x%02x", - rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3]); - } else { - Dbprintf("7B UID: (%02x)%02x%02x%02x%02x%02x%02x%02x", - rUIDBCC1[0], rUIDBCC1[1], rUIDBCC1[2], rUIDBCC1[3], - rUIDBCC2[0], rUIDBCC2[1] ,rUIDBCC2[2], rUIDBCC2[3]); - } - } - - // We need to listen to the high-frequency, peak-detected path. - iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN); - - // free eventually allocated BigBuf memory but keep Emulator Memory - BigBuf_free_keep_EM(); - - // clear trace - clear_trace(); - set_tracing(TRUE); - - - bool finished = FALSE; - while (!BUTTON_PRESS() && !finished) { - WDT_HIT(); - - // find reader field - if (cardSTATE == MFEMUL_NOFIELD) { - vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10; - if (vHf > MF_MINFIELDV) { - cardSTATE_TO_IDLE(); - LED_A_ON(); - } - } - if(cardSTATE == MFEMUL_NOFIELD) continue; - - //Now, get data - - res = EmGetCmd(receivedCmd, &len, receivedCmd_par); - if (res == 2) { //Field is off! - cardSTATE = MFEMUL_NOFIELD; - LEDsoff(); - continue; - } else if (res == 1) { - break; //return value 1 means button press - } - - // REQ or WUP request in ANY state and WUP in HALTED state - if (len == 1 && ((receivedCmd[0] == 0x26 && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == 0x52)) { - selTimer = GetTickCount(); - EmSendCmdEx(rATQA, sizeof(rATQA), (receivedCmd[0] == 0x52)); - cardSTATE = MFEMUL_SELECT1; - - // init crypto block - LED_B_OFF(); - LED_C_OFF(); - crypto1_destroy(pcs); - cardAUTHKEY = 0xff; - continue; - } - - switch (cardSTATE) { - case MFEMUL_NOFIELD: - case MFEMUL_HALTED: - case MFEMUL_IDLE:{ - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - case MFEMUL_SELECT1:{ - // select all - if (len == 2 && (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x20)) { - if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL received"); - EmSendCmd(rUIDBCC1, sizeof(rUIDBCC1)); - break; - } - - if (MF_DBGLEVEL >= 4 && len == 9 && receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 ) - { - Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]); - } - // select card - if (len == 9 && - (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) { - EmSendCmd(_7BUID?rSAK1:rSAK, _7BUID?sizeof(rSAK1):sizeof(rSAK)); - cuid = bytes_to_num(rUIDBCC1, 4); - if (!_7BUID) { - cardSTATE = MFEMUL_WORK; - LED_B_ON(); - if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer); - break; - } else { - cardSTATE = MFEMUL_SELECT2; - } - } - break; - } - case MFEMUL_AUTH1:{ - if( len != 8) - { - cardSTATE_TO_IDLE(); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - - uint32_t ar = bytes_to_num(receivedCmd, 4); - uint32_t nr = bytes_to_num(&receivedCmd[4], 4); - - //Collect AR/NR per key/sector - if(flags & FLAG_NR_AR_ATTACK) { - for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { - if(cardAUTHKEY > 0 && i < (ATTACK_KEY_COUNT/2) ) { - i=ATTACK_KEY_COUNT/2; //keyB skip to keyB - } else if (cardAUTHKEY == 0 && i == ATTACK_KEY_COUNT/2) { - break; //should not get here - quit - } - // if first auth for sector, or matches sector of previous auth - if ( ar_nr_collected[i]==0 || (cardAUTHSC == ar_nr_resp[i].sector && ar_nr_collected[i] > 0) ) { - if(ar_nr_collected[i] < 2) { - if(ar_nr_resp[ar_nr_collected[i]].ar != ar) - {// Avoid duplicates... probably not necessary, ar should vary. - if (ar_nr_collected[i]==0) { - ar_nr_resp[i].cuid = cuid; - ar_nr_resp[i].sector = cardAUTHSC; - ar_nr_resp[i].nonce = nonce; - ar_nr_resp[i].ar = ar; - ar_nr_resp[i].nr = nr; - } else { - ar_nr_resp[i].ar2 = ar; - ar_nr_resp[i].nr2 = nr; - } - ar_nr_collected[i]++; - break; - } - } - } - } - } - - // --- crypto - crypto1_word(pcs, ar , 1); - cardRr = nr ^ crypto1_word(pcs, 0, 0); - - // test if auth OK - if (cardRr != prng_successor(nonce, 64)){ - if (MF_DBGLEVEL >= 2) Dbprintf("AUTH FAILED for sector %d with key %c. cardRr=%08x, succ=%08x", - cardAUTHSC, cardAUTHKEY == 0 ? 'A' : 'B', - cardRr, prng_successor(nonce, 64)); - // Shouldn't we respond anything here? - // Right now, we don't nack or anything, which causes the - // reader to do a WUPA after a while. /Martin - // -- which is the correct response. /piwi - cardSTATE_TO_IDLE(); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - - //auth successful - ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0); - - num_to_bytes(ans, 4, rAUTH_AT); - // --- crypto - EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT)); - LED_C_ON(); - cardSTATE = MFEMUL_WORK; - if (MF_DBGLEVEL >= 4) Dbprintf("AUTH COMPLETED for sector %d with key %c. time=%d", - cardAUTHSC, cardAUTHKEY == 0 ? 'A' : 'B', - GetTickCount() - authTimer); - break; - } - case MFEMUL_SELECT2:{ - if (!len) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - if (len == 2 && (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x20)) { - EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2)); - break; - } - - // select 2 card - if (len == 9 && - (receivedCmd[0] == 0x95 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) { - EmSendCmd(rSAK, sizeof(rSAK)); - cuid = bytes_to_num(rUIDBCC2, 4); - cardSTATE = MFEMUL_WORK; - LED_B_ON(); - if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer); - break; - } - - // i guess there is a command). go into the work state. - if (len != 4) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - cardSTATE = MFEMUL_WORK; - //goto lbWORK; - //intentional fall-through to the next case-stmt - } - - case MFEMUL_WORK:{ - if (len == 0) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - - bool encrypted_data = (cardAUTHKEY != 0xFF) ; - - if(encrypted_data) { - // decrypt seqence - mf_crypto1_decrypt(pcs, receivedCmd, len); - } - - if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) { - authTimer = GetTickCount(); - cardAUTHSC = receivedCmd[1] / 4; // received block num - cardAUTHKEY = receivedCmd[0] - 0x60; - crypto1_destroy(pcs);//Added by martin - crypto1_create(pcs, emlGetKey(cardAUTHSC, cardAUTHKEY)); - - if (!encrypted_data) { // first authentication - if (MF_DBGLEVEL >= 4) Dbprintf("Reader authenticating for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY ); - - crypto1_word(pcs, cuid ^ nonce, 0);//Update crypto state - num_to_bytes(nonce, 4, rAUTH_AT); // Send nonce - } else { // nested authentication - if (MF_DBGLEVEL >= 4) Dbprintf("Reader doing nested authentication for block %d (0x%02x) with key %d",receivedCmd[1] ,receivedCmd[1],cardAUTHKEY ); - ans = nonce ^ crypto1_word(pcs, cuid ^ nonce, 0); - num_to_bytes(ans, 4, rAUTH_AT); - } - - EmSendCmd(rAUTH_AT, sizeof(rAUTH_AT)); - //Dbprintf("Sending rAUTH %02x%02x%02x%02x", rAUTH_AT[0],rAUTH_AT[1],rAUTH_AT[2],rAUTH_AT[3]); - cardSTATE = MFEMUL_AUTH1; - break; - } - - // rule 13 of 7.5.3. in ISO 14443-4. chaining shall be continued - // BUT... ACK --> NACK - if (len == 1 && receivedCmd[0] == CARD_ACK) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - break; - } - - // rule 12 of 7.5.3. in ISO 14443-4. R(NAK) --> R(ACK) - if (len == 1 && receivedCmd[0] == CARD_NACK_NA) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); - break; - } - - if(len != 4) { - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - - if(receivedCmd[0] == 0x30 // read block - || receivedCmd[0] == 0xA0 // write block - || receivedCmd[0] == 0xC0 // inc - || receivedCmd[0] == 0xC1 // dec - || receivedCmd[0] == 0xC2 // restore - || receivedCmd[0] == 0xB0) { // transfer - if (receivedCmd[1] >= 16 * 4) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on out of range block: %d (0x%02x), nacking",receivedCmd[0],receivedCmd[1],receivedCmd[1]); - break; - } - - if (receivedCmd[1] / 4 != cardAUTHSC) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02x) on block (0x%02x) not authenticated for (0x%02x), nacking",receivedCmd[0],receivedCmd[1],cardAUTHSC); - break; - } - } - // read block - if (receivedCmd[0] == 0x30) { - if (MF_DBGLEVEL >= 4) { - Dbprintf("Reader reading block %d (0x%02x)",receivedCmd[1],receivedCmd[1]); - } - emlGetMem(response, receivedCmd[1], 1); - AppendCrc14443a(response, 16); - mf_crypto1_encrypt(pcs, response, 18, response_par); - EmSendCmdPar(response, 18, response_par); - numReads++; - if(exitAfterNReads > 0 && numReads == exitAfterNReads) { - Dbprintf("%d reads done, exiting", numReads); - finished = true; - } - break; - } - // write block - if (receivedCmd[0] == 0xA0) { - if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0xA0 write block %d (%02x)",receivedCmd[1],receivedCmd[1]); - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); - cardSTATE = MFEMUL_WRITEBL2; - cardWRBL = receivedCmd[1]; - break; - } - // increment, decrement, restore - if (receivedCmd[0] == 0xC0 || receivedCmd[0] == 0xC1 || receivedCmd[0] == 0xC2) { - if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0x%02x inc(0xC1)/dec(0xC0)/restore(0xC2) block %d (%02x)",receivedCmd[0],receivedCmd[1],receivedCmd[1]); - if (emlCheckValBl(receivedCmd[1])) { - if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate on block, but emlCheckValBl failed, nacking"); - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - break; - } - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); - if (receivedCmd[0] == 0xC1) - cardSTATE = MFEMUL_INTREG_INC; - if (receivedCmd[0] == 0xC0) - cardSTATE = MFEMUL_INTREG_DEC; - if (receivedCmd[0] == 0xC2) - cardSTATE = MFEMUL_INTREG_REST; - cardWRBL = receivedCmd[1]; - break; - } - // transfer - if (receivedCmd[0] == 0xB0) { - if (MF_DBGLEVEL >= 4) Dbprintf("RECV 0x%02x transfer block %d (%02x)",receivedCmd[0],receivedCmd[1],receivedCmd[1]); - if (emlSetValBl(cardINTREG, cardINTBLOCK, receivedCmd[1])) - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - else - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); - break; - } - // halt - if (receivedCmd[0] == 0x50 && receivedCmd[1] == 0x00) { - LED_B_OFF(); - LED_C_OFF(); - cardSTATE = MFEMUL_HALTED; - if (MF_DBGLEVEL >= 4) Dbprintf("--> HALTED. Selected time: %d ms", GetTickCount() - selTimer); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - break; - } - // RATS - if (receivedCmd[0] == 0xe0) {//RATS - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - break; - } - // command not allowed - if (MF_DBGLEVEL >= 4) Dbprintf("Received command not allowed, nacking"); - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - break; - } - case MFEMUL_WRITEBL2:{ - if (len == 18){ - mf_crypto1_decrypt(pcs, receivedCmd, len); - emlSetMem(receivedCmd, cardWRBL, 1); - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_ACK)); - cardSTATE = MFEMUL_WORK; - } else { - cardSTATE_TO_IDLE(); - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - } - break; - } - - case MFEMUL_INTREG_INC:{ - mf_crypto1_decrypt(pcs, receivedCmd, len); - memcpy(&ans, receivedCmd, 4); - if (emlGetValBl(&cardINTREG, &cardINTBLOCK, cardWRBL)) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - cardSTATE_TO_IDLE(); - break; - } - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - cardINTREG = cardINTREG + ans; - cardSTATE = MFEMUL_WORK; - break; - } - case MFEMUL_INTREG_DEC:{ - mf_crypto1_decrypt(pcs, receivedCmd, len); - memcpy(&ans, receivedCmd, 4); - if (emlGetValBl(&cardINTREG, &cardINTBLOCK, cardWRBL)) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - cardSTATE_TO_IDLE(); - break; - } - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - cardINTREG = cardINTREG - ans; - cardSTATE = MFEMUL_WORK; - break; - } - case MFEMUL_INTREG_REST:{ - mf_crypto1_decrypt(pcs, receivedCmd, len); - memcpy(&ans, receivedCmd, 4); - if (emlGetValBl(&cardINTREG, &cardINTBLOCK, cardWRBL)) { - EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA)); - cardSTATE_TO_IDLE(); - break; - } - LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE); - cardSTATE = MFEMUL_WORK; - break; - } - } - } - - FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF); - LEDsoff(); - - if(flags & FLAG_NR_AR_ATTACK && MF_DBGLEVEL >= 1) - { - for ( uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) { - if (ar_nr_collected[i] == 2) { - Dbprintf("Collected two pairs of AR/NR which can be used to extract %s from reader for sector %d:", (i= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen()); - - if(flags & FLAG_INTERACTIVE)// Interactive mode flag, means we need to send ACK - { - //May just aswell send the collected ar_nr in the response aswell - cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,0,0,&ar_nr_resp,sizeof(ar_nr_resp)); - } - -} - - //----------------------------------------------------------------------------- // MIFARE sniffer. @@ -2859,7 +2334,7 @@ void RAMFUNC SniffMifare(uint8_t param) { LEDsoff(); // init trace buffer clear_trace(); - set_tracing(TRUE); + set_tracing(true); // The command (reader -> tag) that we're receiving. // The length of a received command will in most cases be no more than 18 bytes. @@ -2880,8 +2355,8 @@ void RAMFUNC SniffMifare(uint8_t param) { uint8_t previous_data = 0; int maxDataLen = 0; int dataLen = 0; - bool ReaderIsActive = FALSE; - bool TagIsActive = FALSE; + bool ReaderIsActive = false; + bool TagIsActive = false; // Set up the demodulator for tag -> reader responses. DemodInit(receivedResponse, receivedResponsePar); @@ -2898,7 +2373,7 @@ void RAMFUNC SniffMifare(uint8_t param) { MfSniffInit(); // And now we loop, receiving samples. - for(uint32_t sniffCounter = 0; TRUE; ) { + for(uint32_t sniffCounter = 0; true; ) { if(BUTTON_PRESS()) { DbpString("cancelled by button"); @@ -2916,8 +2391,8 @@ void RAMFUNC SniffMifare(uint8_t param) { sniffCounter = 0; data = dmaBuf; maxDataLen = 0; - ReaderIsActive = FALSE; - TagIsActive = FALSE; + ReaderIsActive = false; + TagIsActive = false; FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); // set transfer address and number of bytes. Start transfer. } } @@ -2959,7 +2434,7 @@ void RAMFUNC SniffMifare(uint8_t param) { uint8_t readerdata = (previous_data & 0xF0) | (*data >> 4); if(MillerDecoding(readerdata, (sniffCounter-1)*4)) { LED_C_INV(); - if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, TRUE)) break; + if (MfSniffLogic(receivedCmd, Uart.len, Uart.parity, Uart.bitCount, true)) break; /* And ready to receive another command. */ UartInit(receivedCmd, receivedCmdPar); @@ -2975,7 +2450,7 @@ void RAMFUNC SniffMifare(uint8_t param) { if(ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) { LED_C_INV(); - if (MfSniffLogic(receivedResponse, Demod.len, Demod.parity, Demod.bitCount, FALSE)) break; + if (MfSniffLogic(receivedResponse, Demod.len, Demod.parity, Demod.bitCount, false)) break; // And ready to receive another response. DemodReset();