git.zerfleddert.de Git - proxmark3-svn/blobdiff

index 64bbcbf50eaaa456123163bc16bd115a13e77ef2..d648beee338f293b08c45bc9db62d2bf5f019d75 100644 (file)

--- a/armsrc/iso14443a.c

+++ b/armsrc/iso14443a.c

@@ -10,17 +10,75 @@

// Routines to support ISO 14443 type A.

//-----------------------------------------------------------------------------

// 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 "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;

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)

#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)

@@ -122,26 +180,6 @@ static uint32_t LastProxToAirDuration;

#define SEC_Y 0x00

#define SEC_Z 0xc0

#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,

- 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,

- 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,

- 1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1

-};

void iso14a_set_trigger(bool enable) {

trigger = enable;

}

void iso14a_set_trigger(bool enable) {

trigger = enable;

}

@@ -179,11 +217,6 @@ void iso14a_set_ATS_timeout(uint8_t *ats) {

// Generate the parity value for a byte sequence

//-----------------------------------------------------------------------------

// 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;

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

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

if (paritybit_cnt == 7) {

par[paritybyte_cnt] = parityBits; // save 8 Bits parity

parityBits = 0; // and advance to next Parity Byte

@@ -213,6 +246,12 @@ void AppendCrc14443a(uint8_t* data, int len)

ComputeCrc14443(CRC_14443_A,data,len,data+len,data+len+1);

}

ComputeCrc14443(CRC_14443_A,data,len,data+len,data+len+1);

}

+void AppendCrc14443b(uint8_t* data, int len)

+ ComputeCrc14443(CRC_14443_B,data,len,data+len,data+len+1);

//=============================================================================

// ISO 14443 Type A - Miller decoder

//=============================================================================

// ISO 14443 Type A - Miller decoder

//=============================================================================

@@ -232,13 +271,17 @@ void AppendCrc14443a(uint8_t* data, int len)

static tUart Uart;

// Lookup-Table to decide if 4 raw bits are a modulation.

static tUart Uart;

// Lookup-Table to decide if 4 raw bits are a modulation.

-// We accept two or three consecutive "0" in any position with the rest "1"

+// We accept the following:

+// 0001 - a 3 tick wide pause

+// 0011 - a 2 tick wide pause, or a three tick wide pause shifted left

+// 0111 - a 2 tick wide pause shifted left

+// 1001 - a 2 tick wide pause shifted right

const bool Mod_Miller_LUT[] = {

- TRUE, TRUE, FALSE, TRUE, FALSE, FALSE, FALSE, FALSE,

- TRUE, TRUE, FALSE, FALSE, TRUE, 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 & 0x00F0) >> 4])

-#define IsMillerModulationNibble2(b) (Mod_Miller_LUT[(b & 0x000F)])

+#define IsMillerModulationNibble1(b) (Mod_Miller_LUT[(b & 0x000000F0) >> 4])

+#define IsMillerModulationNibble2(b) (Mod_Miller_LUT[(b & 0x0000000F)])

void UartReset()

{

void UartReset()

{

@@ -248,8 +291,6 @@ void UartReset()

Uart.parityLen = 0; // number of decoded parity bytes

Uart.shiftReg = 0; // shiftreg to hold decoded data bits

Uart.parityBits = 0; // holds 8 parity bits

Uart.parityLen = 0; // number of decoded parity bytes

Uart.shiftReg = 0; // shiftreg to hold decoded data bits

Uart.parityBits = 0; // holds 8 parity bits

- Uart.twoBits = 0x0000; // buffer for 2 Bits

- Uart.highCnt = 0;

Uart.startTime = 0;

Uart.endTime = 0;

}

Uart.startTime = 0;

Uart.endTime = 0;

}

@@ -258,6 +299,7 @@ void UartInit(uint8_t *data, uint8_t *parity)

{

Uart.output = data;

Uart.parity = parity;

{

Uart.output = data;

Uart.parity = parity;

+ Uart.fourBits = 0x00000000; // clear the buffer for 4 Bits

UartReset();

}

UartReset();

}

@@ -265,40 +307,37 @@ void UartInit(uint8_t *data, uint8_t *parity)

static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)

{

static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)

{

- Uart.twoBits = (Uart.twoBits << 8) | bit;

+ Uart.fourBits = (Uart.fourBits << 8) | bit;

if (Uart.state == STATE_UNSYNCD) { // not yet synced

- if (Uart.highCnt < 2) { // wait for a stable unmodulated signal

- if (Uart.twoBits == 0xffff) {

- Uart.highCnt++;

- } else {

- Uart.highCnt = 0;

- }

- } else {

- Uart.syncBit = 0xFFFF; // not set

- // we look for a ...1111111100x11111xxxxxx pattern (the start bit)

- if ((Uart.twoBits & 0xDF00) == 0x1F00) Uart.syncBit = 8; // mask is 11x11111 xxxxxxxx,

- // check for 00x11111 xxxxxxxx

- else if ((Uart.twoBits & 0xEF80) == 0x8F80) Uart.syncBit = 7; // both masks shifted right one bit, left padded with '1'

- else if ((Uart.twoBits & 0xF7C0) == 0xC7C0) Uart.syncBit = 6; // ...

- else if ((Uart.twoBits & 0xFBE0) == 0xE3E0) Uart.syncBit = 5;

- else if ((Uart.twoBits & 0xFDF0) == 0xF1F0) Uart.syncBit = 4;

- else if ((Uart.twoBits & 0xFEF8) == 0xF8F8) Uart.syncBit = 3;

- else if ((Uart.twoBits & 0xFF7C) == 0xFC7C) Uart.syncBit = 2;

- else if ((Uart.twoBits & 0xFFBE) == 0xFE3E) Uart.syncBit = 1;

- if (Uart.syncBit != 0xFFFF) { // found a sync bit

- Uart.startTime = non_real_time?non_real_time:(GetCountSspClk() & 0xfffffff8);

- Uart.startTime -= Uart.syncBit;

- Uart.endTime = Uart.startTime;

- Uart.state = STATE_START_OF_COMMUNICATION;

- }

+ Uart.syncBit = 9999; // not set

+ // The start bit is one ore more Sequence Y followed by a Sequence Z (... 11111111 00x11111). We need to distinguish from

+ // Sequence X followed by Sequence Y followed by Sequence Z (111100x1 11111111 00x11111)

+ // we therefore look for a ...xx11111111111100x11111xxxxxx... pattern

+ // (12 '1's followed by 2 '0's, eventually followed by another '0', followed by 5 '1's)

+ #define ISO14443A_STARTBIT_MASK 0x07FFEF80 // mask is 00000111 11111111 11101111 10000000

+ #define ISO14443A_STARTBIT_PATTERN 0x07FF8F80 // pattern is 00000111 11111111 10001111 10000000

+ if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 0)) == ISO14443A_STARTBIT_PATTERN >> 0) Uart.syncBit = 7;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 1)) == ISO14443A_STARTBIT_PATTERN >> 1) Uart.syncBit = 6;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 2)) == ISO14443A_STARTBIT_PATTERN >> 2) Uart.syncBit = 5;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 3)) == ISO14443A_STARTBIT_PATTERN >> 3) Uart.syncBit = 4;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 4)) == ISO14443A_STARTBIT_PATTERN >> 4) Uart.syncBit = 3;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 5)) == ISO14443A_STARTBIT_PATTERN >> 5) Uart.syncBit = 2;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 6)) == ISO14443A_STARTBIT_PATTERN >> 6) Uart.syncBit = 1;

+ else if ((Uart.fourBits & (ISO14443A_STARTBIT_MASK >> 7)) == ISO14443A_STARTBIT_PATTERN >> 7) Uart.syncBit = 0;

+ if (Uart.syncBit != 9999) { // found a sync bit

+ Uart.startTime = non_real_time?non_real_time:(GetCountSspClk() & 0xfffffff8);

+ Uart.startTime -= Uart.syncBit;

+ Uart.endTime = Uart.startTime;

+ Uart.state = STATE_START_OF_COMMUNICATION;

}

} else {

}

} else {

- if (IsMillerModulationNibble1(Uart.twoBits >> Uart.syncBit)) {

- if (IsMillerModulationNibble2(Uart.twoBits >> Uart.syncBit)) { // Modulation in both halves - error

+ if (IsMillerModulationNibble1(Uart.fourBits >> Uart.syncBit)) {

+ if (IsMillerModulationNibble2(Uart.fourBits >> Uart.syncBit)) { // Modulation in both halves - error

UartReset();

} else { // Modulation in first half = Sequence Z = logic "0"

if (Uart.state == STATE_MILLER_X) { // error - must not follow after X

UartReset();

} else { // Modulation in first half = Sequence Z = logic "0"

if (Uart.state == STATE_MILLER_X) { // error - must not follow after X

@@ -322,7 +361,7 @@ static RAMFUNC bool MillerDecoding(uint8_t bit, uint32_t non_real_time)

}

} else {

}

} else {

- if (IsMillerModulationNibble2(Uart.twoBits >> Uart.syncBit)) { // Modulation second half = Sequence X = logic "1"

+ if (IsMillerModulationNibble2(Uart.fourBits >> Uart.syncBit)) { // Modulation second half = Sequence X = logic "1"

Uart.bitCount++;

Uart.shiftReg = (Uart.shiftReg >> 1) | 0x100; // add a 1 to the shiftreg

Uart.state = STATE_MILLER_X;

Uart.bitCount++;

Uart.shiftReg = (Uart.shiftReg >> 1) | 0x100; // add a 1 to the shiftreg

Uart.state = STATE_MILLER_X;

@@ -349,21 +388,19 @@ 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

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) {

} 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

} else {

UartReset(); // Nothing received - start over

- Uart.highCnt = 1;

}

if (Uart.state == STATE_START_OF_COMMUNICATION) { // error - must not follow directly after SOC

UartReset();

}

if (Uart.state == STATE_START_OF_COMMUNICATION) { // error - must not follow directly after SOC

UartReset();

- Uart.highCnt = 1;

} else { // a logic "0"

Uart.bitCount++;

Uart.shiftReg = (Uart.shiftReg >> 1); // add a 0 to the shiftreg

} else { // a logic "0"

Uart.bitCount++;

Uart.shiftReg = (Uart.shiftReg >> 1); // add a 0 to the shiftreg

@@ -385,7 +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

}

@@ -410,8 +447,8 @@ 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[] = {

// 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 IsManchesterModulationNibble1(b) (Mod_Manchester_LUT[(b & 0x00F0) >> 4])

@@ -516,13 +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

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) {

} 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();

}

} else { // nothing received. Start over

DemodReset();

}

@@ -531,7 +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

}

//=============================================================================

}

//=============================================================================

@@ -551,12 +588,8 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {

LEDsoff();

- // 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

- bool triggered = !(param & 0x03);

+ iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);

// Allocate memory from BigBuf for some buffers

// free all previous allocations first

BigBuf_free();

// Allocate memory from BigBuf for some buffers

// free all previous allocations first

BigBuf_free();

@@ -574,17 +607,15 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {

// init trace buffer

clear_trace();

// 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;

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;

- iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);

// Set up the demodulator for tag -> reader responses.

DemodInit(receivedResponse, receivedResponsePar);

// Set up the demodulator for tag -> reader responses.

DemodInit(receivedResponse, receivedResponsePar);

@@ -594,8 +625,14 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {

// Setup and start DMA.

FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);

// Setup and start DMA.

FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);

+ // 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

+ 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");

if(BUTTON_PRESS()) {

DbpString("cancelled by button");

@@ -644,7 +681,7 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {

LED_C_ON();

// check - if there is a short 7bit request from reader

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,

if(triggered) {

if (!LogTrace(receivedCmd,

@@ -652,7 +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,

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();

}

/* And ready to receive another command. */

UartReset();

@@ -674,12 +711,15 @@ void RAMFUNC SnoopIso14443a(uint8_t param) {

Demod.startTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER,

Demod.endTime*16 - DELAY_TAG_AIR2ARM_AS_SNIFFER,

Demod.parity,

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();

// And ready to receive another response.

DemodReset();

+ // And reset the Miller decoder including itS (now outdated) input buffer

+ UartInit(receivedCmd, receivedCmdPar);

LED_C_OFF();

}

TagIsActive = (Demod.state != DEMOD_UNSYNCD);

LED_C_OFF();

}

TagIsActive = (Demod.state != DEMOD_UNSYNCD);

@@ -803,7 +843,7 @@ static void Code4bitAnswerAsTag(uint8_t cmd)

//-----------------------------------------------------------------------------

// Wait for commands from reader

// Stop when button is pressed

//-----------------------------------------------------------------------------

// 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)

{

//-----------------------------------------------------------------------------

static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int *len)

{

@@ -822,13 +862,13 @@ static int GetIso14443aCommandFromReader(uint8_t *received, uint8_t *parity, int

for(;;) {

WDT_HIT();

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;

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;

+ return true;

}

@@ -1026,6 +1066,9 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

.modulation_n = 0

};

.modulation_n = 0

};

+ // We need to listen to the high-frequency, peak-detected path.

+ iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);

BigBuf_free_keep_EM();

// allocate buffers:

BigBuf_free_keep_EM();

// allocate buffers:

@@ -1035,7 +1078,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

// clear trace

clear_trace();

// 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

// Prepare the responses of the anticollision phase

// there will be not enough time to do this at the moment the reader sends it REQA

@@ -1054,16 +1097,12 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

int happened2 = 0;

int cmdsRecvd = 0;

int happened2 = 0;

int cmdsRecvd = 0;

- // We need to listen to the high-frequency, peak-detected path.

- iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);

cmdsRecvd = 0;

tag_response_info_t* p_response;

LED_A_ON();

for(;;) {

// Clean receive command buffer

cmdsRecvd = 0;

tag_response_info_t* p_response;

LED_A_ON();

for(;;) {

// Clean receive command buffer

if(!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {

DbpString("Button press");

break;

if(!GetIso14443aCommandFromReader(receivedCmd, receivedCmdPar, &len)) {

DbpString("Button press");

break;

@@ -1093,7 +1132,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

} else if(receivedCmd[0] == 0x50) { // Received a HALT

if (tracing) {

} else if(receivedCmd[0] == 0x50) { // Received a HALT

if (tracing) {

- LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

+ LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

}

p_response = NULL;

} else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request

}

p_response = NULL;

} else if(receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61) { // Received an authentication request

@@ -1107,7 +1146,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

}

} else if (order == 7 && len == 8) { // Received {nr] and {ar} (part of authentication)

if (tracing) {

}

} else if (order == 7 && len == 8) { // Received {nr] and {ar} (part of authentication)

if (tracing) {

- LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

+ LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

}

uint32_t nr = bytes_to_num(receivedCmd,4);

uint32_t ar = bytes_to_num(receivedCmd+4,4);

}

uint32_t nr = bytes_to_num(receivedCmd,4);

uint32_t ar = bytes_to_num(receivedCmd+4,4);

@@ -1151,7 +1190,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

default: {

// Never seen this command before

if (tracing) {

default: {

// Never seen this command before

if (tracing) {

- LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

+ LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

}

Dbprintf("Received unknown command (len=%d):",len);

Dbhexdump(len,receivedCmd,false);

}

Dbprintf("Received unknown command (len=%d):",len);

Dbhexdump(len,receivedCmd,false);

@@ -1171,7 +1210,7 @@ void SimulateIso14443aTag(int tagType, int uid_1st, int uid_2nd, byte_t* data)

if (prepare_tag_modulation(&dynamic_response_info,DYNAMIC_MODULATION_BUFFER_SIZE) == false) {

Dbprintf("Error preparing tag response");

if (tracing) {

if (prepare_tag_modulation(&dynamic_response_info,DYNAMIC_MODULATION_BUFFER_SIZE) == false) {

Dbprintf("Error preparing tag response");

if (tracing) {

- LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, TRUE);

+ LogTrace(receivedCmd, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

}

break;

}

break;

}

@@ -1337,7 +1376,7 @@ void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8

}

// Only transmit parity bit if we transmitted a complete byte

}

// Only transmit parity bit if we transmitted a complete byte

- if (j == 8) {

+ if (j == 8 && parity != NULL) {

// Get the parity bit

if (parity[i>>3] & (0x80 >> (i&0x0007))) {

// Sequence X

// Get the parity bit

if (parity[i>>3] & (0x80 >> (i&0x0007))) {

// Sequence X

@@ -1465,7 +1504,7 @@ static int EmSendCmd14443aRaw(uint8_t *resp, uint16_t respLen, bool correctionNe

// include correction bit if necessary

if (Uart.parityBits & 0x01) {

// include correction bit if necessary

if (Uart.parityBits & 0x01) {

- correctionNeeded = TRUE;

+ correctionNeeded = true;

}

if(correctionNeeded) {

// 1236, so correction bit needed

}

if(correctionNeeded) {

// 1236, so correction bit needed

@@ -1586,18 +1625,18 @@ bool EmLogTrace(uint8_t *reader_data, uint16_t reader_len, uint32_t reader_Start

uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20;

reader_EndTime = tag_StartTime - exact_fdt;

reader_StartTime = reader_EndTime - reader_modlen;

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));

+ 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;

+ return true;

}

//-----------------------------------------------------------------------------

// Wait a certain time for tag response

}

//-----------------------------------------------------------------------------

// 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)

{

//-----------------------------------------------------------------------------

static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receivedResponsePar, uint16_t offset)

{

@@ -1623,14 +1662,15 @@ 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);

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;

}

void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t *timing)

{

CodeIso14443aBitsAsReaderPar(frame, bits, par);

void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t *timing)

{

CodeIso14443aBitsAsReaderPar(frame, bits, par);

@@ -1642,15 +1682,17 @@ void ReaderTransmitBitsPar(uint8_t* frame, uint16_t bits, uint8_t *par, uint32_t

// Log reader command in trace buffer

if (tracing) {

// 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);

}

void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *timing)

{

ReaderTransmitBitsPar(frame, len*8, par, timing);

}

void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *timing)

{

ReaderTransmitBitsPar(frame, len*8, par, timing);

}

void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)

{

// Generate parity and redirect

void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)

{

// Generate parity and redirect

@@ -1659,6 +1701,7 @@ void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)

ReaderTransmitBitsPar(frame, len, par, timing);

}

ReaderTransmitBitsPar(frame, len, par, timing);

}

void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing)

{

// Generate parity and redirect

void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing)

{

// Generate parity and redirect

@@ -1669,26 +1712,28 @@ void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing)

int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity)

{

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)

{

}

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;

}

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)

+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) {

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};

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};

@@ -1703,7 +1748,7 @@ 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

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;

// Receive the ATQA

if(!ReaderReceive(resp, resp_par)) return 0;

@@ -1714,11 +1759,18 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u

memset(p_hi14a_card->uid,0,10);

}

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:

+ if ((resp[0] & 0x1F) == 0) {

+ return 3;

+ }

// OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in

// which case we need to make a cascade 2 request and select - this is a long UID

// While the UID is not complete, the 3nd bit (from the right) is set in the SAK.

// OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in

// which case we need to make a cascade 2 request and select - this is a long UID

// While the UID is not complete, the 3nd bit (from the right) is set in the SAK.

@@ -1726,40 +1778,49 @@ 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_* (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;

}

uid_resp_len = 4;

@@ -1770,7 +1831,7 @@ 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)

// 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);

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);

@@ -1778,19 +1839,18 @@ 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];

// 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];

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;

}

uid_resp_len = 3;

}

- if(uid_ptr) {

+ if(uid_ptr && anticollision) {

memcpy(uid_ptr + (cascade_level*3), uid_resp, uid_resp_len);

}

memcpy(uid_ptr + (cascade_level*3), uid_resp, uid_resp_len);

}

@@ -1901,17 +1961,17 @@ void ReaderIso14443a(UsbCommand *c)

clear_trace();

}

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) {

iso14443a_setup(FPGA_HF_ISO14443A_READER_LISTEN);

if(!(param & ISO14A_NO_SELECT)) {

iso14a_card_select_t *card = (iso14a_card_select_t*)buf;

}

if(param & ISO14A_CONNECT) {

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);

cmd_send(CMD_ACK,arg0,card->uidlen,0,buf,sizeof(iso14a_card_select_t));

}

cmd_send(CMD_ACK,arg0,card->uidlen,0,buf,sizeof(iso14a_card_select_t));

}

@@ -1927,22 +1987,45 @@ void ReaderIso14443a(UsbCommand *c)

if(param & ISO14A_RAW) {

if(param & ISO14A_APPEND_CRC) {

if(param & ISO14A_RAW) {

if(param & ISO14A_APPEND_CRC) {

- AppendCrc14443a(cmd,len);

+ if(param & ISO14A_TOPAZMODE) {

+ AppendCrc14443b(cmd,len);

+ } else {

+ AppendCrc14443a(cmd,len);

+ }

len += 2;

if (lenbits) lenbits += 16;

}

len += 2;

if (lenbits) lenbits += 16;

}

- if(lenbits>0) {

- GetParity(cmd, lenbits/8, par);

- ReaderTransmitBitsPar(cmd, lenbits, par, NULL);

- } else {

- ReaderTransmit(cmd,len, NULL);

+ if(lenbits>0) { // want to send a specific number of bits (e.g. short commands)

+ if(param & ISO14A_TOPAZMODE) {

+ int bits_to_send = lenbits;

+ uint16_t i = 0;

+ ReaderTransmitBitsPar(&cmd[i++], MIN(bits_to_send, 7), NULL, NULL); // first byte is always short (7bits) and no parity

+ bits_to_send -= 7;

+ while (bits_to_send > 0) {

+ ReaderTransmitBitsPar(&cmd[i++], MIN(bits_to_send, 8), NULL, NULL); // following bytes are 8 bit and no parity

+ bits_to_send -= 8;

+ }

+ } else {

+ GetParity(cmd, lenbits/8, par);

+ ReaderTransmitBitsPar(cmd, lenbits, par, NULL); // bytes are 8 bit with odd parity

+ }

+ } else { // want to send complete bytes only

+ if(param & ISO14A_TOPAZMODE) {

+ uint16_t i = 0;

+ ReaderTransmitBitsPar(&cmd[i++], 7, NULL, NULL); // first byte: 7 bits, no paritiy

+ while (i < len) {

+ ReaderTransmitBitsPar(&cmd[i++], 8, NULL, NULL); // following bytes: 8 bits, no paritiy

+ }

+ } else {

+ ReaderTransmit(cmd,len, NULL); // 8 bits, odd parity

+ }

}

arg0 = ReaderReceive(buf, par);

cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));

}

if(param & ISO14A_REQUEST_TRIGGER) {

}

arg0 = ReaderReceive(buf, par);

cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));

}

if(param & ISO14A_REQUEST_TRIGGER) {

- iso14a_set_trigger(FALSE);

+ iso14a_set_trigger(false);

}

if(param & ISO14A_NO_DISCONNECT) {

}

if(param & ISO14A_NO_DISCONNECT) {

@@ -1971,7 +2054,7 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {

nttmp1 = prng_successor(nttmp1, 1);

if (nttmp1 == nt2) return i;

nttmp2 = prng_successor(nttmp2, 1);

nttmp1 = prng_successor(nttmp1, 1);

if (nttmp1 == nt2) return i;

nttmp2 = prng_successor(nttmp2, 1);

- if (nttmp2 == nt1) return -i;

+ if (nttmp2 == nt1) return -i;

}

return(-99999); // either nt1 or nt2 are invalid nonces

}

return(-99999); // either nt1 or nt2 are invalid nonces

@@ -1994,16 +2077,20 @@ void ReaderMifare(bool first_try)

uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

uint8_t receivedAnswer[MAX_MIFARE_FRAME_SIZE];

uint8_t receivedAnswerPar[MAX_MIFARE_PARITY_SIZE];

+ if (first_try) {

+ iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);

+ }

// free eventually allocated BigBuf memory. We want all for tracing.

BigBuf_free();

clear_trace();

// free eventually allocated BigBuf memory. We want all for tracing.

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;

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;

uint8_t uid[10] ={0};

uint32_t cuid;

@@ -2013,20 +2100,20 @@ void ReaderMifare(bool first_try)

byte_t par_list[8] = {0x00};

byte_t ks_list[8] = {0x00};

byte_t par_list[8] = {0x00};

byte_t ks_list[8] = {0x00};

+ #define PRNG_SEQUENCE_LENGTH (1 << 16);

static uint32_t sync_time;

- static uint32_t sync_cycles;

+ static int32_t sync_cycles;

int catch_up_cycles = 0;

int last_catch_up = 0;

int catch_up_cycles = 0;

int last_catch_up = 0;

+ uint16_t elapsed_prng_sequences;

uint16_t consecutive_resyncs = 0;

int isOK = 0;

if (first_try) {

mf_nr_ar3 = 0;

uint16_t consecutive_resyncs = 0;

int isOK = 0;

if (first_try) {

mf_nr_ar3 = 0;

- iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);

sync_time = GetCountSspClk() & 0xfffffff8;

- sync_cycles = 65536; // theory: Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).

+ sync_cycles = PRNG_SEQUENCE_LENGTH; // theory: Mifare Classic's random generator repeats every 2^16 cycles (and so do the tag nonces).

nt_attacked = 0;

- nt = 0;

par[0] = 0;

}

else {

par[0] = 0;

}

else {

@@ -2040,33 +2127,84 @@ void ReaderMifare(bool first_try)

LED_B_OFF();

LED_C_OFF();

LED_B_OFF();

LED_C_OFF();

- for(uint16_t i = 0; TRUE; i++) {

+ #define MAX_UNEXPECTED_RANDOM 4 // maximum number of unexpected (i.e. real) random numbers when trying to sync. Then give up.

+ #define MAX_SYNC_TRIES 32

+ #define NUM_DEBUG_INFOS 8 // per strategy

+ #define MAX_STRATEGY 3

+ uint16_t unexpected_random = 0;

+ uint16_t sync_tries = 0;

+ int16_t debug_info_nr = -1;

+ uint16_t strategy = 0;

+ int32_t debug_info[MAX_STRATEGY][NUM_DEBUG_INFOS];

+ uint32_t select_time;

+ uint32_t halt_time;

+ for(uint16_t i = 0; true; i++) {

+ LED_C_ON();

WDT_HIT();

// Test if the action was cancelled

if(BUTTON_PRESS()) {

WDT_HIT();

// Test if the action was cancelled

if(BUTTON_PRESS()) {

+ isOK = -1;

break;

}

break;

}

- LED_C_ON();

+ if (strategy == 2) {

+ // test with additional hlt command

+ halt_time = 0;

+ int len = mifare_sendcmd_short(NULL, false, 0x50, 0x00, receivedAnswer, receivedAnswerPar, &halt_time);

+ if (len && MF_DBGLEVEL >= 3) {

+ Dbprintf("Unexpected response of %d bytes to hlt command (additional debugging).", len);

+ }

- if(!iso14443a_select_card(uid, NULL, &cuid)) {

+ if (strategy == 3) {

+ // test with FPGA power off/on

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ SpinDelay(200);

+ iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);

+ SpinDelay(100);

+ }

+ if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {

if (MF_DBGLEVEL >= 1) Dbprintf("Mifare: Can't select card");

continue;

}

if (MF_DBGLEVEL >= 1) Dbprintf("Mifare: Can't select card");

continue;

}

+ select_time = GetCountSspClk();

- sync_time = (sync_time & 0xfffffff8) + sync_cycles + catch_up_cycles;

- catch_up_cycles = 0;

+ elapsed_prng_sequences = 1;

+ if (debug_info_nr == -1) {

+ sync_time = (sync_time & 0xfffffff8) + sync_cycles + catch_up_cycles;

+ catch_up_cycles = 0;

- // if we missed the sync time already, advance to the next nonce repeat

- while(GetCountSspClk() > sync_time) {

- sync_time = (sync_time & 0xfffffff8) + sync_cycles;

- }

+ // if we missed the sync time already, advance to the next nonce repeat

+ while(GetCountSspClk() > sync_time) {

+ elapsed_prng_sequences++;

+ sync_time = (sync_time & 0xfffffff8) + sync_cycles;

+ }

- // Transmit MIFARE_CLASSIC_AUTH at synctime. Should result in returning the same tag nonce (== nt_attacked)

- ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);

+ // Transmit MIFARE_CLASSIC_AUTH at synctime. Should result in returning the same tag nonce (== nt_attacked)

+ ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);

+ } else {

+ // collect some information on tag nonces for debugging:

+ #define DEBUG_FIXED_SYNC_CYCLES PRNG_SEQUENCE_LENGTH

+ if (strategy == 0) {

+ // nonce distances at fixed time after card select:

+ sync_time = select_time + DEBUG_FIXED_SYNC_CYCLES;

+ } else if (strategy == 1) {

+ // nonce distances at fixed time between authentications:

+ sync_time = sync_time + DEBUG_FIXED_SYNC_CYCLES;

+ } else if (strategy == 2) {

+ // nonce distances at fixed time after halt:

+ sync_time = halt_time + DEBUG_FIXED_SYNC_CYCLES;

+ } else {

+ // nonce_distances at fixed time after power on

+ sync_time = DEBUG_FIXED_SYNC_CYCLES;

+ }

+ ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);

+ }

// Receive the (4 Byte) "random" nonce

if (!ReaderReceive(receivedAnswer, receivedAnswerPar)) {

// Receive the (4 Byte) "random" nonce

if (!ReaderReceive(receivedAnswer, receivedAnswerPar)) {

@@ -2084,13 +2222,37 @@ void ReaderMifare(bool first_try)

int nt_distance = dist_nt(previous_nt, nt);

if (nt_distance == 0) {

nt_attacked = nt;

int nt_distance = dist_nt(previous_nt, nt);

if (nt_distance == 0) {

nt_attacked = nt;

- }

- else {

- if (nt_distance == -99999) { // invalid nonce received, try again

- continue;

+ } else {

+ if (nt_distance == -99999) { // invalid nonce received

+ unexpected_random++;

+ if (unexpected_random > MAX_UNEXPECTED_RANDOM) {

+ isOK = -3; // Card has an unpredictable PRNG. Give up

+ break;

+ } else {

+ continue; // continue trying...

+ }

+ if (++sync_tries > MAX_SYNC_TRIES) {

+ if (strategy > MAX_STRATEGY || MF_DBGLEVEL < 3) {

+ isOK = -4; // Card's PRNG runs at an unexpected frequency or resets unexpectedly

+ break;

+ } else { // continue for a while, just to collect some debug info

+ debug_info[strategy][debug_info_nr] = nt_distance;

+ debug_info_nr++;

+ if (debug_info_nr == NUM_DEBUG_INFOS) {

+ strategy++;

+ debug_info_nr = 0;

+ }

+ continue;

+ }

+ sync_cycles = (sync_cycles - nt_distance/elapsed_prng_sequences);

+ if (sync_cycles <= 0) {

+ sync_cycles += PRNG_SEQUENCE_LENGTH;

+ }

+ if (MF_DBGLEVEL >= 3) {

+ Dbprintf("calibrating in cycle %d. nt_distance=%d, elapsed_prng_sequences=%d, new sync_cycles: %d\n", i, nt_distance, elapsed_prng_sequences, sync_cycles);

}

- sync_cycles = (sync_cycles - nt_distance);

- if (MF_DBGLEVEL >= 3) Dbprintf("calibrating in cycle %d. nt_distance=%d, Sync_cycles: %d\n", i, nt_distance, sync_cycles);

continue;

}

continue;

}

@@ -2101,6 +2263,7 @@ void ReaderMifare(bool first_try)

catch_up_cycles = 0;

continue;

}

catch_up_cycles = 0;

continue;

}

+ catch_up_cycles /= elapsed_prng_sequences;

if (catch_up_cycles == last_catch_up) {

consecutive_resyncs++;

}

if (catch_up_cycles == last_catch_up) {

consecutive_resyncs++;

}

@@ -2114,6 +2277,9 @@ void ReaderMifare(bool first_try)

else {

sync_cycles = sync_cycles + catch_up_cycles;

if (MF_DBGLEVEL >= 3) Dbprintf("Lost sync in cycle %d for the fourth time consecutively (nt_distance = %d). Adjusting sync_cycles to %d.\n", i, -catch_up_cycles, sync_cycles);

else {

sync_cycles = sync_cycles + catch_up_cycles;

if (MF_DBGLEVEL >= 3) Dbprintf("Lost sync in cycle %d for the fourth time consecutively (nt_distance = %d). Adjusting sync_cycles to %d.\n", i, -catch_up_cycles, sync_cycles);

+ last_catch_up = 0;

+ catch_up_cycles = 0;

+ consecutive_resyncs = 0;

}

continue;

}

continue;

}

@@ -2121,12 +2287,10 @@ void ReaderMifare(bool first_try)

consecutive_resyncs = 0;

// Receive answer. This will be a 4 Bit NACK when the 8 parity bits are OK after decoding

consecutive_resyncs = 0;

// Receive answer. This will be a 4 Bit NACK when the 8 parity bits are OK after decoding

- if (ReaderReceive(receivedAnswer, receivedAnswerPar))

- {

+ if (ReaderReceive(receivedAnswer, receivedAnswerPar)) {

catch_up_cycles = 8; // the PRNG is delayed by 8 cycles due to the NAC (4Bits = 0x05 encrypted) transfer

- if (nt_diff == 0)

- {

+ if (nt_diff == 0) {

par_low = par[0] & 0xE0; // there is no need to check all parities for other nt_diff. Parity Bits for mf_nr_ar[0..2] won't change

}

par_low = par[0] & 0xE0; // there is no need to check all parities for other nt_diff. Parity Bits for mf_nr_ar[0..2] won't change

}

@@ -2149,6 +2313,10 @@ void ReaderMifare(bool first_try)

if (nt_diff == 0 && first_try)

{

par[0]++;

if (nt_diff == 0 && first_try)

{

par[0]++;

+ if (par[0] == 0x00) { // tried all 256 possible parities without success. Card doesn't send NACK.

+ isOK = -2;

+ break;

+ }

} else {

par[0] = ((par[0] & 0x1F) + 1) | par_low;

}

} else {

par[0] = ((par[0] & 0x1F) + 1) | par_low;

}

@@ -2157,6 +2325,16 @@ void ReaderMifare(bool first_try)

mf_nr_ar[3] &= 0x1F;

+ if (isOK == -4) {

+ if (MF_DBGLEVEL >= 3) {

+ for (uint16_t i = 0; i <= MAX_STRATEGY; i++) {

+ for(uint16_t j = 0; j < NUM_DEBUG_INFOS; j++) {

+ Dbprintf("collected debug info[%d][%d] = %d", i, j, debug_info[i][j]);

+ }

byte_t buf[28];

memcpy(buf + 0, uid, 4);

byte_t buf[28];

memcpy(buf + 0, uid, 4);

@@ -2165,29 +2343,44 @@ void ReaderMifare(bool first_try)

memcpy(buf + 16, ks_list, 8);

memcpy(buf + 24, mf_nr_ar, 4);

memcpy(buf + 16, ks_list, 8);

memcpy(buf + 24, mf_nr_ar, 4);

- cmd_send(CMD_ACK,isOK,0,0,buf,28);

+ cmd_send(CMD_ACK, isOK, 0, 0, buf, 28);

// Thats it...

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

LEDsoff();

// Thats it...

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

/**

*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_4B_UID_IN_DATA - means that there is a 4-byte UID in the data-section, we're expected to use that

+ * FLAG_7B_UID_IN_DATA - means that there is a 7-byte UID in the data-section, we're expected to use that

+ * FLAG_10B_UID_IN_DATA - use 10-byte UID in the data-section not finished

* 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

+ * FLAG_RANDOM_NONCE - means we should generate some pseudo-random nonce data (only allows moebius attack)

+ *@param exitAfterNReads, exit simulation after n blocks have been read, 0 is infinite ...

+ * (unless reader attack mode enabled then it runs util it gets enough nonces to recover all keys attmpted)

void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain)

{

int cardSTATE = MFEMUL_NOFIELD;

void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *datain)

{

int cardSTATE = MFEMUL_NOFIELD;

- int _7BUID = 0;

+ int _UID_LEN = 0; // 4, 7, 10

int vHf = 0; // in mV

int res;

uint32_t selTimer = 0;

int vHf = 0; // in mV

int res;

uint32_t selTimer = 0;

@@ -2211,30 +2404,40 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

uint8_t response[MAX_MIFARE_FRAME_SIZE];

uint8_t response_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 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 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 rUIDBCC3[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};

+ uint8_t rSAKfinal[]= {0x08, 0xb6, 0xdd}; // mifare 1k indicated

+ uint8_t rSAK1[] = {0x04, 0xda, 0x17}; // indicate UID not finished

uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04};

uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};

uint8_t rAUTH_NT[] = {0x01, 0x02, 0x03, 0x04};

uint8_t rAUTH_AT[] = {0x00, 0x00, 0x00, 0x00};

- //Here, we collect UID,NT,AR,NR,UID2,NT2,AR2,NR2

- // This can be used in a reader-only attack.

- // (it can also be retrieved via 'hf 14a list', but hey...

- uint32_t ar_nr_responses[] = {0,0,0,0,0,0,0,0};

- uint8_t ar_nr_collected = 0;

- // free eventually allocated BigBuf memory but keep Emulator Memory

- BigBuf_free_keep_EM();

- // clear trace

- clear_trace();

- set_tracing(TRUE);

+ //Here, we collect UID,sector,keytype,NT,AR,NR,NT2,AR2,NR2

+ // This will be used in the reader-only attack.

+ //allow collecting up to 7 sets of nonces to allow recovery of up to 7 keys

+ #define ATTACK_KEY_COUNT 7 // keep same as define in cmdhfmf.c -> readerAttack() (Cannot be more than 7)

+ nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*2 for 2 separate attack types (nml, moebius)

+ memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp));

+ uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; //*2 for 2nd attack type (moebius)

+ memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));

+ uint8_t nonce1_count = 0;

+ uint8_t nonce2_count = 0;

+ uint8_t moebius_n_count = 0;

+ bool gettingMoebius = false;

+ uint8_t mM = 0; //moebius_modifier for collection storage

// Authenticate response - nonce

- uint32_t nonce = bytes_to_num(rAUTH_NT, 4);

+ uint32_t nonce;

+ if (flags & FLAG_RANDOM_NONCE) {

+ nonce = prand();

+ } else {

+ nonce = bytes_to_num(rAUTH_NT, 4);

+ }

//-- Determine the UID

// Can be set from emulator memory, incoming data

//-- Determine the UID

// Can be set from emulator memory, incoming data

@@ -2244,53 +2447,111 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

// 4B uid comes from data-portion of packet

memcpy(rUIDBCC1,datain,4);

rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

// 4B uid comes from data-portion of packet

memcpy(rUIDBCC1,datain,4);

rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ _UID_LEN = 4;

} 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);

} 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;

+ _UID_LEN = 7;

+ } else if (flags & FLAG_10B_UID_IN_DATA) {

+ memcpy(&rUIDBCC1[1], datain, 3);

+ memcpy(&rUIDBCC2[1], datain+3, 3);

+ memcpy( rUIDBCC3, datain+6, 4);

+ _UID_LEN = 10;

} else {

- // get UID from emul memory

+ // get UID from emul memory - guess at length

emlGetMemBt(receivedCmd, 7, 1);

- _7BUID = !(receivedCmd[0] == 0x00);

- if (!_7BUID) { // ---------- 4BUID

+ if (receivedCmd[0] == 0x00) { // ---------- 4BUID

emlGetMemBt(rUIDBCC1, 0, 4);

+ _UID_LEN = 4;

} else { // ---------- 7BUID

emlGetMemBt(&rUIDBCC1[1], 0, 3);

emlGetMemBt(rUIDBCC2, 3, 4);

} else { // ---------- 7BUID

emlGetMemBt(&rUIDBCC1[1], 0, 3);

emlGetMemBt(rUIDBCC2, 3, 4);

+ _UID_LEN = 7;

}

- /*

- * 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];

+ switch (_UID_LEN) {

+ case 4:

+ // save CUID

+ cuid = bytes_to_num(rUIDBCC1, 4);

+ // BCC

+ rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ if (MF_DBGLEVEL >= 2) {

+ Dbprintf("4B UID: %02x%02x%02x%02x",

+ rUIDBCC1[0],

+ rUIDBCC1[1],

+ rUIDBCC1[2],

+ rUIDBCC1[3]

+ );

+ }

+ break;

+ case 7:

+ rATQA[0] |= 0x40;

+ // save CUID

+ cuid = bytes_to_num(rUIDBCC2, 4);

+ // CascadeTag, CT

+ rUIDBCC1[0] = 0x88;

+ // BCC

+ rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];

+ if (MF_DBGLEVEL >= 2) {

+ Dbprintf("7B UID: %02x %02x %02x %02x %02x %02x %02x",

+ rUIDBCC1[1],

+ rUIDBCC1[2],

+ rUIDBCC1[3],

+ rUIDBCC2[0],

+ rUIDBCC2[1],

+ rUIDBCC2[2],

+ rUIDBCC2[3]

+ );

+ }

+ break;

+ case 10:

+ rATQA[0] |= 0x80;

+ //sak_10[0] &= 0xFB;

+ // save CUID

+ cuid = bytes_to_num(rUIDBCC3, 4);

+ // CascadeTag, CT

+ rUIDBCC1[0] = 0x88;

+ rUIDBCC2[0] = 0x88;

+ // BCC

+ rUIDBCC1[4] = rUIDBCC1[0] ^ rUIDBCC1[1] ^ rUIDBCC1[2] ^ rUIDBCC1[3];

+ rUIDBCC2[4] = rUIDBCC2[0] ^ rUIDBCC2[1] ^ rUIDBCC2[2] ^ rUIDBCC2[3];

+ rUIDBCC3[4] = rUIDBCC3[0] ^ rUIDBCC3[1] ^ rUIDBCC3[2] ^ rUIDBCC3[3];

+ if (MF_DBGLEVEL >= 2) {

+ Dbprintf("10B UID: %02x %02x %02x %02x %02x %02x %02x %02x %02x %02x",

+ rUIDBCC1[1],

+ rUIDBCC1[2],

+ rUIDBCC1[3],

+ rUIDBCC2[1],

+ rUIDBCC2[2],

+ rUIDBCC2[3],

+ rUIDBCC3[0],

+ rUIDBCC3[1],

+ rUIDBCC3[2],

+ rUIDBCC3[3]

+ );

+ }

+ break;

+ default:

+ break;

}

// We need to listen to the high-frequency, peak-detected path.

iso14443a_setup(FPGA_HF_ISO14443A_TAGSIM_LISTEN);

}

// 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();

- 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]);

- }

+ // clear trace

+ clear_trace();

+ set_tracing(true);

- bool finished = FALSE;

- while (!BUTTON_PRESS() && !finished) {

+ bool finished = false;

+ bool button_pushed = BUTTON_PRESS();

+ while (!button_pushed && !finished && !usb_poll_validate_length()) {

WDT_HIT();

// find reader field

WDT_HIT();

// find reader field

@@ -2300,11 +2561,10 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

cardSTATE_TO_IDLE();

LED_A_ON();

}

cardSTATE_TO_IDLE();

LED_A_ON();

}

- }

- if(cardSTATE == MFEMUL_NOFIELD) continue;

+ }

+ if (cardSTATE == MFEMUL_NOFIELD) continue;

//Now, get data

res = EmGetCmd(receivedCmd, &len, receivedCmd_par);

if (res == 2) { //Field is off!

cardSTATE = MFEMUL_NOFIELD;

res = EmGetCmd(receivedCmd, &len, receivedCmd_par);

if (res == 2) { //Field is off!

cardSTATE = MFEMUL_NOFIELD;

@@ -2313,11 +2573,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

} else if (res == 1) {

break; //return value 1 means button press

}

} 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)) {

+ if (len == 1 && ((receivedCmd[0] == ISO14443A_CMD_REQA && cardSTATE != MFEMUL_HALTED) || receivedCmd[0] == ISO14443A_CMD_WUPA)) {

selTimer = GetTickCount();

- EmSendCmdEx(rATQA, sizeof(rATQA), (receivedCmd[0] == 0x52));

+ EmSendCmdEx(rATQA, sizeof(rATQA), (receivedCmd[0] == ISO14443A_CMD_WUPA));

cardSTATE = MFEMUL_SELECT1;

// init crypto block

cardSTATE = MFEMUL_SELECT1;

// init crypto block

@@ -2325,6 +2585,9 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

LED_C_OFF();

crypto1_destroy(pcs);

cardAUTHKEY = 0xff;

LED_C_OFF();

crypto1_destroy(pcs);

cardAUTHKEY = 0xff;

+ if (flags & FLAG_RANDOM_NONCE) {

+ nonce = prand();

+ }

continue;

}

continue;

}

@@ -2332,63 +2595,145 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

case MFEMUL_NOFIELD:

case MFEMUL_HALTED:

case MFEMUL_IDLE:{

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);

+ 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:{

break;

}

case MFEMUL_SELECT1:{

- // select all

- if (len == 2 && (receivedCmd[0] == 0x93 && receivedCmd[1] == 0x20)) {

+ // select all - 0x93 0x20

+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x20)) {

if (MF_DBGLEVEL >= 4) Dbprintf("SELECT ALL received");

EmSendCmd(rUIDBCC1, sizeof(rUIDBCC1));

break;

}

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 - 0x93 0x70 ...

+ if (len == 9 &&

+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC1, 4) == 0)) {

+ if (MF_DBGLEVEL >= 4)

+ Dbprintf("SELECT %02x%02x%02x%02x received",receivedCmd[2],receivedCmd[3],receivedCmd[4],receivedCmd[5]);

+ switch(_UID_LEN) {

+ case 4:

+ cardSTATE = MFEMUL_WORK;

+ LED_B_ON();

+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol1 time: %d", GetTickCount() - selTimer);

+ EmSendCmd(rSAKfinal, sizeof(rSAKfinal));

+ break;

+ case 7:

+ cardSTATE = MFEMUL_SELECT2;

+ EmSendCmd(rSAK1, sizeof(rSAK1));

+ break;

+ case 10:

+ cardSTATE = MFEMUL_SELECT2;

+ EmSendCmd(rSAK1, sizeof(rSAK1));

+ break;

+ default:break;

+ }

+ } else {

+ cardSTATE_TO_IDLE();

+ }

+ break;

+ }

+ case MFEMUL_SELECT3:{

+ 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;

}

- // select card

+ // select all cl3 - 0x97 0x20

+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 && receivedCmd[1] == 0x20)) {

+ EmSendCmd(rUIDBCC3, sizeof(rUIDBCC3));

+ break;

+ }

+ // select card cl3 - 0x97 0x70

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;

- }

+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_3 &&

+ receivedCmd[1] == 0x70 &&

+ memcmp(&receivedCmd[2], rUIDBCC3, 4) == 0) ) {

+ EmSendCmd(rSAKfinal, sizeof(rSAKfinal));

+ cardSTATE = MFEMUL_WORK;

+ LED_B_ON();

+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol3 time: %d", GetTickCount() - selTimer);

+ break;

}

+ cardSTATE_TO_IDLE();

break;

}

case MFEMUL_AUTH1:{

break;

}

case MFEMUL_AUTH1:{

- if( len != 8)

- {

+ 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);

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

break;

}

break;

}

- uint32_t ar = bytes_to_num(receivedCmd, 4);

- uint32_t nr = bytes_to_num(&receivedCmd[4], 4);

- //Collect AR/NR

- if(ar_nr_collected < 2){

- if(ar_nr_responses[2] != ar)

- {// Avoid duplicates... probably not necessary, ar should vary.

- ar_nr_responses[ar_nr_collected*4] = cuid;

- ar_nr_responses[ar_nr_collected*4+1] = nonce;

- ar_nr_responses[ar_nr_collected*4+2] = ar;

- ar_nr_responses[ar_nr_collected*4+3] = nr;

- ar_nr_collected++;

+ uint32_t nr = bytes_to_num(receivedCmd, 4);

+ uint32_t ar = bytes_to_num(&receivedCmd[4], 4);

+ // Collect AR/NR per keytype & sector

+ if(flags & FLAG_NR_AR_ATTACK) {

+ for (uint8_t i = 0; i < ATTACK_KEY_COUNT; i++) {

+ if ( ar_nr_collected[i+mM]==0 || ((cardAUTHSC == ar_nr_resp[i+mM].sector) && (cardAUTHKEY == ar_nr_resp[i+mM].keytype) && (ar_nr_collected[i+mM] > 0)) ) {

+ // if first auth for sector, or matches sector and keytype of previous auth

+ if (ar_nr_collected[i+mM] < 2) {

+ // if we haven't already collected 2 nonces for this sector

+ if (ar_nr_resp[ar_nr_collected[i+mM]].ar != ar) {

+ // Avoid duplicates... probably not necessary, ar should vary.

+ if (ar_nr_collected[i+mM]==0) {

+ // first nonce collect

+ ar_nr_resp[i+mM].cuid = cuid;

+ ar_nr_resp[i+mM].sector = cardAUTHSC;

+ ar_nr_resp[i+mM].keytype = cardAUTHKEY;

+ ar_nr_resp[i+mM].nonce = nonce;

+ ar_nr_resp[i+mM].nr = nr;

+ ar_nr_resp[i+mM].ar = ar;

+ nonce1_count++;

+ // add this nonce to first moebius nonce

+ ar_nr_resp[i+ATTACK_KEY_COUNT].cuid = cuid;

+ ar_nr_resp[i+ATTACK_KEY_COUNT].sector = cardAUTHSC;

+ ar_nr_resp[i+ATTACK_KEY_COUNT].keytype = cardAUTHKEY;

+ ar_nr_resp[i+ATTACK_KEY_COUNT].nonce = nonce;

+ ar_nr_resp[i+ATTACK_KEY_COUNT].nr = nr;

+ ar_nr_resp[i+ATTACK_KEY_COUNT].ar = ar;

+ ar_nr_collected[i+ATTACK_KEY_COUNT]++;

+ } else { // second nonce collect (std and moebius)

+ ar_nr_resp[i+mM].nonce2 = nonce;

+ ar_nr_resp[i+mM].nr2 = nr;

+ ar_nr_resp[i+mM].ar2 = ar;

+ if (!gettingMoebius) {

+ nonce2_count++;

+ // check if this was the last second nonce we need for std attack

+ if ( nonce2_count == nonce1_count ) {

+ // done collecting std test switch to moebius

+ // first finish incrementing last sample

+ ar_nr_collected[i+mM]++;

+ // switch to moebius collection

+ gettingMoebius = true;

+ mM = ATTACK_KEY_COUNT;

+ if (flags & FLAG_RANDOM_NONCE) {

+ nonce = prand();

+ } else {

+ nonce = nonce*7;

+ }

+ break;

+ }

+ } else {

+ moebius_n_count++;

+ // if we've collected all the nonces we need - finish.

+ if (nonce1_count == moebius_n_count) finished = true;

+ }

+ ar_nr_collected[i+mM]++;

+ }

+ // we found right spot for this nonce stop looking

+ break;

+ }

}

// --- crypto

}

// --- crypto

- crypto1_word(pcs, ar , 1);

- cardRr = nr ^ crypto1_word(pcs, 0, 0);

+ crypto1_word(pcs, nr , 1);

+ cardRr = ar ^ crypto1_word(pcs, 0, 0);

// test if auth OK

if (cardRr != prng_successor(nonce, 64)){

// test if auth OK

if (cardRr != prng_successor(nonce, 64)){

@@ -2400,10 +2745,11 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

// reader to do a WUPA after a while. /Martin

// -- which is the correct response. /piwi

cardSTATE_TO_IDLE();

// 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);

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

break;

}

break;

}

+ //auth successful

ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);

num_to_bytes(ans, 4, rAUTH_AT);

ans = prng_successor(nonce, 96) ^ crypto1_word(pcs, 0, 0);

num_to_bytes(ans, 4, rAUTH_AT);

@@ -2418,28 +2764,37 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

}

case MFEMUL_SELECT2:{

if (!len) {

}

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);

+ 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)) {

+ }

+ // select all cl2 - 0x95 0x20

+ if (len == 2 && (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x20)) {

EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2));

break;

}

EmSendCmd(rUIDBCC2, sizeof(rUIDBCC2));

break;

}

- // select 2 card

+ // select cl2 card - 0x95 0x70 xxxxxxxxxxxx

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);

+ (receivedCmd[0] == ISO14443A_CMD_ANTICOLL_OR_SELECT_2 && receivedCmd[1] == 0x70 && memcmp(&receivedCmd[2], rUIDBCC2, 4) == 0)) {

+ switch(_UID_LEN) {

+ case 7:

+ EmSendCmd(rSAKfinal, sizeof(rSAKfinal));

+ cardSTATE = MFEMUL_WORK;

+ LED_B_ON();

+ if (MF_DBGLEVEL >= 4) Dbprintf("--> WORK. anticol2 time: %d", GetTickCount() - selTimer);

+ break;

+ case 10:

+ EmSendCmd(rSAK1, sizeof(rSAK1));

+ cardSTATE = MFEMUL_SELECT3;

+ break;

+ default:break;

+ }

break;

}

// i guess there is a command). go into the work state.

if (len != 4) {

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);

+ 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;

break;

}

cardSTATE = MFEMUL_WORK;

@@ -2449,7 +2804,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

case MFEMUL_WORK:{

if (len == 0) {

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);

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

break;

}

break;

}

@@ -2461,11 +2816,22 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

}

if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {

}

if (len == 4 && (receivedCmd[0] == 0x60 || receivedCmd[0] == 0x61)) {

+ // if authenticating to a block that shouldn't exist - as long as we are not doing the reader attack

+ if (receivedCmd[1] >= 16 * 4 && !(flags & FLAG_NR_AR_ATTACK)) {

+ //is this the correct response to an auth on a out of range block? marshmellow

+ 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;

+ }

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));

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));

+ //uint64_t key=emlGetKey(cardAUTHSC, cardAUTHKEY);

+ //Dbprintf("key: %04x%08x",(uint32_t)(key>>32)&0xFFFF,(uint32_t)(key&0xFFFFFFFF));

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 );

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 );

@@ -2498,7 +2864,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

}

if(len != 4) {

}

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);

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

break;

}

break;

}

@@ -2510,13 +2876,13 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

|| receivedCmd[0] == 0xB0) { // transfer

if (receivedCmd[1] >= 16 * 4) {

EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));

|| 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%02) on out of range block: %d (0x%02x), nacking",receivedCmd[0],receivedCmd[1],receivedCmd[1]);

+ 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));

break;

}

if (receivedCmd[1] / 4 != cardAUTHSC) {

EmSend4bit(mf_crypto1_encrypt4bit(pcs, CARD_NACK_NA));

- if (MF_DBGLEVEL >= 2) Dbprintf("Reader tried to operate (0x%02) on block (0x%02x) not authenticated for (0x%02x), nacking",receivedCmd[0],receivedCmd[1],cardAUTHSC);

+ 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;

}

break;

}

@@ -2577,7 +2943,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

LED_C_OFF();

cardSTATE = MFEMUL_HALTED;

if (MF_DBGLEVEL >= 4) Dbprintf("--> HALTED. Selected time: %d ms", GetTickCount() - selTimer);

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);

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

break;

}

// RATS

break;

}

// RATS

@@ -2598,7 +2964,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

cardSTATE = MFEMUL_WORK;

} else {

cardSTATE_TO_IDLE();

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);

+ LogTrace(Uart.output, Uart.len, Uart.startTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.endTime*16 - DELAY_AIR2ARM_AS_TAG, Uart.parity, true);

}

break;

}

break;

}

@@ -2611,7 +2977,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

cardSTATE_TO_IDLE();

break;

}

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);

+ 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;

cardINTREG = cardINTREG + ans;

cardSTATE = MFEMUL_WORK;

break;

@@ -2624,7 +2990,7 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

cardSTATE_TO_IDLE();

break;

}

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);

+ 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;

cardINTREG = cardINTREG - ans;

cardSTATE = MFEMUL_WORK;

break;

@@ -2637,50 +3003,53 @@ void Mifare1ksim(uint8_t flags, uint8_t exitAfterNReads, uint8_t arg2, uint8_t *

cardSTATE_TO_IDLE();

break;

}

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);

+ 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;

}

cardSTATE = MFEMUL_WORK;

break;

}

+ button_pushed = BUTTON_PRESS();

}

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

LEDsoff();

}

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

LEDsoff();

- 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_responses,ar_nr_collected*4*4);

- }

- if(flags & FLAG_NR_AR_ATTACK)

- {

- if(ar_nr_collected > 1) {

- Dbprintf("Collected two pairs of AR/NR which can be used to extract keys from reader:");

- Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",

- ar_nr_responses[0], // UID

- ar_nr_responses[1], //NT

- ar_nr_responses[2], //AR1

- ar_nr_responses[3], //NR1

- ar_nr_responses[6], //AR2

- ar_nr_responses[7] //NR2

- );

- } else {

- Dbprintf("Failed to obtain two AR/NR pairs!");

- if(ar_nr_collected >0) {

- Dbprintf("Only got these: UID=%08x, nonce=%08x, AR1=%08x, NR1=%08x",

- ar_nr_responses[0], // UID

- ar_nr_responses[1], //NT

- ar_nr_responses[2], //AR1

- ar_nr_responses[3] //NR1

+ 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<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);

+ Dbprintf("../tools/mfkey/mfkey32 %08x %08x %08x %08x %08x %08x",

+ ar_nr_resp[i].cuid, //UID

+ ar_nr_resp[i].nonce, //NT

+ ar_nr_resp[i].nr, //NR1

+ ar_nr_resp[i].ar, //AR1

+ ar_nr_resp[i].nr2, //NR2

+ ar_nr_resp[i].ar2 //AR2

+ );

+ }

+ for ( uint8_t i = ATTACK_KEY_COUNT; i < ATTACK_KEY_COUNT*2; 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<ATTACK_KEY_COUNT/2) ? "keyA" : "keyB", ar_nr_resp[i].sector);

+ Dbprintf("../tools/mfkey/mfkey32v2 %08x %08x %08x %08x %08x %08x %08x",

+ ar_nr_resp[i].cuid, //UID

+ ar_nr_resp[i].nonce, //NT

+ ar_nr_resp[i].nr, //NR1

+ ar_nr_resp[i].ar, //AR1

+ ar_nr_resp[i].nonce2,//NT2

+ ar_nr_resp[i].nr2, //NR2

+ ar_nr_resp[i].ar2 //AR2

);

}

if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());

);

}

if (MF_DBGLEVEL >= 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

+ //Send the collected ar_nr in the response

+ cmd_send(CMD_ACK,CMD_SIMULATE_MIFARE_CARD,button_pushed,0,&ar_nr_resp,sizeof(ar_nr_resp));

+ }

//-----------------------------------------------------------------------------

@@ -2696,7 +3065,7 @@ void RAMFUNC SniffMifare(uint8_t param) {

LEDsoff();

// init trace buffer

clear_trace();

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.

// The command (reader -> tag) that we're receiving.

// The length of a received command will in most cases be no more than 18 bytes.

@@ -2707,10 +3076,8 @@ void RAMFUNC SniffMifare(uint8_t param) {

uint8_t receivedResponse[MAX_MIFARE_FRAME_SIZE];

uint8_t receivedResponsePar[MAX_MIFARE_PARITY_SIZE];

uint8_t receivedResponse[MAX_MIFARE_FRAME_SIZE];

uint8_t receivedResponsePar[MAX_MIFARE_PARITY_SIZE];

- // As we receive stuff, we copy it from receivedCmd or receivedResponse

- // into trace, along with its length and other annotations.

- //uint8_t *trace = (uint8_t *)BigBuf;

+ iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);

// free eventually allocated BigBuf memory

BigBuf_free();

// allocate the DMA buffer, used to stream samples from the FPGA

// free eventually allocated BigBuf memory

BigBuf_free();

// allocate the DMA buffer, used to stream samples from the FPGA

@@ -2719,10 +3086,8 @@ void RAMFUNC SniffMifare(uint8_t param) {

uint8_t previous_data = 0;

int maxDataLen = 0;

int dataLen = 0;

uint8_t previous_data = 0;

int maxDataLen = 0;

int dataLen = 0;

- bool ReaderIsActive = FALSE;

- bool TagIsActive = FALSE;

- iso14443a_setup(FPGA_HF_ISO14443A_SNIFFER);

+ bool ReaderIsActive = false;

+ bool TagIsActive = false;

// Set up the demodulator for tag -> reader responses.

DemodInit(receivedResponse, receivedResponsePar);

// Set up the demodulator for tag -> reader responses.

DemodInit(receivedResponse, receivedResponsePar);

@@ -2739,7 +3104,7 @@ void RAMFUNC SniffMifare(uint8_t param) {

MfSniffInit();

// And now we loop, receiving samples.

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");

if(BUTTON_PRESS()) {

DbpString("cancelled by button");

@@ -2757,8 +3122,8 @@ void RAMFUNC SniffMifare(uint8_t param) {

sniffCounter = 0;

data = dmaBuf;

maxDataLen = 0;

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.

}

FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE); // set transfer address and number of bytes. Start transfer.

}

@@ -2800,10 +3165,10 @@ void RAMFUNC SniffMifare(uint8_t param) {

uint8_t readerdata = (previous_data & 0xF0) | (*data >> 4);

if(MillerDecoding(readerdata, (sniffCounter-1)*4)) {

LED_C_INV();

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. */

- UartReset();

+ UartInit(receivedCmd, receivedCmdPar);

/* And also reset the demod code */

DemodReset();

/* And also reset the demod code */

DemodReset();

@@ -2816,10 +3181,12 @@ void RAMFUNC SniffMifare(uint8_t param) {

if(ManchesterDecoding(tagdata, 0, (sniffCounter-1)*4)) {

LED_C_INV();

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();

// And ready to receive another response.

DemodReset();

+ // And reset the Miller decoder including its (now outdated) input buffer

+ UartInit(receivedCmd, receivedCmdPar);

}

TagIsActive = (Demod.state != DEMOD_UNSYNCD);

}

TagIsActive = (Demod.state != DEMOD_UNSYNCD);

}