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

// Hagen Fritsch - June 2010

// Gerhard de Koning Gans - May 2011

// Gerhard de Koning Gans - June 2012 - Added iClass card and reader emulation

// Hagen Fritsch - June 2010

// Gerhard de Koning Gans - May 2011

// Gerhard de Koning Gans - June 2012 - Added iClass card and reader emulation

+// piwi - 2019

//

// This code is licensed to you under the terms of the GNU GPL, version 2 or,

// at your option, any later version. See the LICENSE.txt file for the text of

//

// This code is licensed to you under the terms of the GNU GPL, version 2 or,

// at your option, any later version. See the LICENSE.txt file for the text of

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

// Routines to support iClass.

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

// Routines to support iClass.

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

-// Based on ISO14443a implementation. Still in experimental phase.

// Contribution made during a security research at Radboud University Nijmegen

-//

-// Please feel free to contribute and extend iClass support!!

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

-//

-// FIX:

-// ====

-// We still have sometimes a demodulation error when snooping iClass communication.

-// The resulting trace of a read-block-03 command may look something like this:

-//

-// + 22279: : 0c 03 e8 01

-//

-// ...with an incorrect answer...

-//

-// + 85: 0: TAG ff! ff! ff! ff! ff! ff! ff! ff! bb 33 bb 00 01! 0e! 04! bb !crc

-//

-// We still left the error signalling bytes in the traces like 0xbb

-//

-// A correct trace should look like this:

-//

-// + 21112: : 0c 03 e8 01

-// + 85: 0: TAG ff ff ff ff ff ff ff ff ea f5

//

+// Please feel free to contribute and extend iClass support!!

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

+#include "iclass.h"

+

#include "proxmark3.h"

#include "apps.h"

#include "util.h"

#include "string.h"

#include "proxmark3.h"

#include "apps.h"

#include "util.h"

#include "string.h"

+#include "printf.h"

#include "common.h"

-#include "cmd.h"

+#include "usb_cdc.h"

+#include "iso14443a.h"

+#include "iso15693.h"

// Needed for CRC in emulation mode;

// same construction as in ISO 14443;

// different initial value (CRC_ICLASS)

#include "iso14443crc.h"

#include "iso15693tools.h"

// Needed for CRC in emulation mode;

// same construction as in ISO 14443;

// different initial value (CRC_ICLASS)

#include "iso14443crc.h"

#include "iso15693tools.h"

+#include "protocols.h"

+#include "optimized_cipher.h"

+#include "fpgaloader.h"

-static int timeout = 4096;

-

+// iCLASS has a slightly different timing compared to ISO15693. According to the picopass data sheet the tag response is expected 330us after

+// the reader command. This is measured from end of reader EOF to first modulation of the tag's SOF which starts with a 56,64us unmodulated period.

+// 330us = 140 ssp_clk cycles @ 423,75kHz when simulating.

+// 56,64us = 24 ssp_clk_cycles

+#define DELAY_ICLASS_VCD_TO_VICC_SIM (140 - 24)

+// times in ssp_clk_cycles @ 3,3625MHz when acting as reader

+#define DELAY_ICLASS_VICC_TO_VCD_READER DELAY_ISO15693_VICC_TO_VCD_READER

+// times in samples @ 212kHz when acting as reader

+#define ICLASS_READER_TIMEOUT_ACTALL 330 // 1558us, nominal 330us + 7slots*160us = 1450us

+#define ICLASS_READER_TIMEOUT_UPDATE 3390 // 16000us, nominal 4-15ms

+#define ICLASS_READER_TIMEOUT_OTHERS 80 // 380us, nominal 330us

-static int SendIClassAnswer(uint8_t *resp, int respLen, int delay);

-

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

-// The software UART that receives commands from the reader, and its state

-// variables.

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

-static struct {

- enum {

- STATE_UNSYNCD,

- STATE_START_OF_COMMUNICATION,

- STATE_RECEIVING

- } state;

- uint16_t shiftReg;

- int bitCnt;

- int byteCnt;

- int byteCntMax;

- int posCnt;

- int nOutOfCnt;

- int OutOfCnt;

- int syncBit;

- int parityBits;

- int samples;

- int highCnt;

- int swapper;

- int counter;

- int bitBuffer;

- int dropPosition;

- uint8_t *output;

-} Uart;

-

-static RAMFUNC int OutOfNDecoding(int bit)

-{

- //int error = 0;

- int bitright;

-

- if(!Uart.bitBuffer) {

- Uart.bitBuffer = bit ^ 0xFF0;

- return FALSE;

- }

- else {

- Uart.bitBuffer <<= 4;

- Uart.bitBuffer ^= bit;

- }

-

- /*if(Uart.swapper) {

- Uart.output[Uart.byteCnt] = Uart.bitBuffer & 0xFF;

- Uart.byteCnt++;

- Uart.swapper = 0;

- if(Uart.byteCnt > 15) { return TRUE; }

- }

- else {

- Uart.swapper = 1;

- }*/

-

- if(Uart.state != STATE_UNSYNCD) {

- Uart.posCnt++;

-

- if((Uart.bitBuffer & Uart.syncBit) ^ Uart.syncBit) {

- bit = 0x00;

- }

- else {

- bit = 0x01;

- }

- if(((Uart.bitBuffer << 1) & Uart.syncBit) ^ Uart.syncBit) {

- bitright = 0x00;

- }

- else {

- bitright = 0x01;

- }

- if(bit != bitright) { bit = bitright; }

-

- // So, now we only have to deal with *bit*, lets see...

- if(Uart.posCnt == 1) {

- // measurement first half bitperiod

- if(!bit) {

- // Drop in first half means that we are either seeing

- // an SOF or an EOF.

-

- if(Uart.nOutOfCnt == 1) {

- // End of Communication

- Uart.state = STATE_UNSYNCD;

- Uart.highCnt = 0;

- if(Uart.byteCnt == 0) {

- // Its not straightforward to show single EOFs

- // So just leave it and do not return TRUE

- Uart.output[Uart.byteCnt] = 0xf0;

- Uart.byteCnt++;

-

- // Calculate the parity bit for the client...

- Uart.parityBits = 1;

- }

- else {

- return TRUE;

- }

- else if(Uart.state != STATE_START_OF_COMMUNICATION) {

- // When not part of SOF or EOF, it is an error

- Uart.state = STATE_UNSYNCD;

- Uart.highCnt = 0;

- //error = 4;

- }

- else {

- // measurement second half bitperiod

- // Count the bitslot we are in... (ISO 15693)

- Uart.nOutOfCnt++;

-

- if(!bit) {

- if(Uart.dropPosition) {

- if(Uart.state == STATE_START_OF_COMMUNICATION) {

- //error = 1;

- }

- else {

- //error = 7;

- }

- // It is an error if we already have seen a drop in current frame

- Uart.state = STATE_UNSYNCD;

- Uart.highCnt = 0;

- }

- else {

- Uart.dropPosition = Uart.nOutOfCnt;

- }

+#define ICLASS_BUFFER_SIZE 34 // we expect max 34 bytes as tag answer (response to READ4)

- Uart.posCnt = 0;

-

- if(Uart.nOutOfCnt == Uart.OutOfCnt && Uart.OutOfCnt == 4) {

- Uart.nOutOfCnt = 0;

-

- if(Uart.state == STATE_START_OF_COMMUNICATION) {

- if(Uart.dropPosition == 4) {

- Uart.state = STATE_RECEIVING;

- Uart.OutOfCnt = 256;

- }

- else if(Uart.dropPosition == 3) {

- Uart.state = STATE_RECEIVING;

- Uart.OutOfCnt = 4;

- //Uart.output[Uart.byteCnt] = 0xdd;

- //Uart.byteCnt++;

- }

- else {

- Uart.state = STATE_UNSYNCD;

- Uart.highCnt = 0;

- }

- Uart.dropPosition = 0;

- }

- else {

- // RECEIVING DATA

- // 1 out of 4

- if(!Uart.dropPosition) {

- Uart.state = STATE_UNSYNCD;

- Uart.highCnt = 0;

- //error = 9;

- }

- else {

- Uart.shiftReg >>= 2;

-

- // Swap bit order

- Uart.dropPosition--;

- //if(Uart.dropPosition == 1) { Uart.dropPosition = 2; }

- //else if(Uart.dropPosition == 2) { Uart.dropPosition = 1; }

-

- Uart.shiftReg ^= ((Uart.dropPosition & 0x03) << 6);

- Uart.bitCnt += 2;

- Uart.dropPosition = 0;

-

- if(Uart.bitCnt == 8) {

- Uart.output[Uart.byteCnt] = (Uart.shiftReg & 0xff);

- Uart.byteCnt++;

-

- // Calculate the parity bit for the client...

- Uart.parityBits <<= 1;

- Uart.parityBits ^= OddByteParity[(Uart.shiftReg & 0xff)];

-

- Uart.bitCnt = 0;

- Uart.shiftReg = 0;

- }

- else if(Uart.nOutOfCnt == Uart.OutOfCnt) {

- // RECEIVING DATA

- // 1 out of 256

- if(!Uart.dropPosition) {

- Uart.state = STATE_UNSYNCD;

- Uart.highCnt = 0;

- //error = 3;

- }

- else {

- Uart.dropPosition--;

- Uart.output[Uart.byteCnt] = (Uart.dropPosition & 0xff);

- Uart.byteCnt++;

-

- // Calculate the parity bit for the client...

- Uart.parityBits <<= 1;

- Uart.parityBits ^= OddByteParity[(Uart.dropPosition & 0xff)];

-

- Uart.bitCnt = 0;

- Uart.shiftReg = 0;

- Uart.nOutOfCnt = 0;

- Uart.dropPosition = 0;

- }

-

- /*if(error) {

- Uart.output[Uart.byteCnt] = 0xAA;

- Uart.byteCnt++;

- Uart.output[Uart.byteCnt] = error & 0xFF;

- Uart.byteCnt++;

- Uart.output[Uart.byteCnt] = 0xAA;

- Uart.byteCnt++;

- Uart.output[Uart.byteCnt] = (Uart.bitBuffer >> 8) & 0xFF;

- Uart.byteCnt++;

- Uart.output[Uart.byteCnt] = Uart.bitBuffer & 0xFF;

- Uart.byteCnt++;

- Uart.output[Uart.byteCnt] = (Uart.syncBit >> 3) & 0xFF;

- Uart.byteCnt++;

- Uart.output[Uart.byteCnt] = 0xAA;

- Uart.byteCnt++;

- return TRUE;

- }*/

- }

-

- }

- else {

- bit = Uart.bitBuffer & 0xf0;

- bit >>= 4;

- bit ^= 0x0F; // drops become 1s ;-)

- if(bit) {

- // should have been high or at least (4 * 128) / fc

- // according to ISO this should be at least (9 * 128 + 20) / fc

- if(Uart.highCnt == 8) {

- // we went low, so this could be start of communication

- // it turns out to be safer to choose a less significant

- // syncbit... so we check whether the neighbour also represents the drop

- Uart.posCnt = 1; // apparently we are busy with our first half bit period

- Uart.syncBit = bit & 8;

- Uart.samples = 3;

- if(!Uart.syncBit) { Uart.syncBit = bit & 4; Uart.samples = 2; }

- else if(bit & 4) { Uart.syncBit = bit & 4; Uart.samples = 2; bit <<= 2; }

- if(!Uart.syncBit) { Uart.syncBit = bit & 2; Uart.samples = 1; }

- else if(bit & 2) { Uart.syncBit = bit & 2; Uart.samples = 1; bit <<= 1; }

- if(!Uart.syncBit) { Uart.syncBit = bit & 1; Uart.samples = 0;

- if(Uart.syncBit && (Uart.bitBuffer & 8)) {

- Uart.syncBit = 8;

-

- // the first half bit period is expected in next sample

- Uart.posCnt = 0;

- Uart.samples = 3;

- }

- else if(bit & 1) { Uart.syncBit = bit & 1; Uart.samples = 0; }

-

- Uart.syncBit <<= 4;

- Uart.state = STATE_START_OF_COMMUNICATION;

- Uart.bitCnt = 0;

- Uart.byteCnt = 0;

- Uart.parityBits = 0;

- Uart.nOutOfCnt = 0;

- Uart.OutOfCnt = 4; // Start at 1/4, could switch to 1/256

- Uart.dropPosition = 0;

- Uart.shiftReg = 0;

- //error = 0;

- }

- else {

- Uart.highCnt = 0;

- }

- else {

- if(Uart.highCnt < 8) {

- Uart.highCnt++;

- }

-

- return FALSE;

-}

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

-// Manchester

+// A `sniffer' for iClass communication

+// Both sides of communication!

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

+void SnoopIClass(uint8_t jam_search_len, uint8_t *jam_search_string) {

+ SnoopIso15693(jam_search_len, jam_search_string);

+}

+

-static struct {

- enum {

- DEMOD_UNSYNCD,

- DEMOD_START_OF_COMMUNICATION,

- DEMOD_START_OF_COMMUNICATION2,

- DEMOD_START_OF_COMMUNICATION3,

- DEMOD_SOF_COMPLETE,

- DEMOD_MANCHESTER_D,

- DEMOD_MANCHESTER_E,

- DEMOD_END_OF_COMMUNICATION,

- DEMOD_END_OF_COMMUNICATION2,

- DEMOD_MANCHESTER_F,

- DEMOD_ERROR_WAIT

- } state;

- int bitCount;

- int posCount;

- int syncBit;

- int parityBits;

- uint16_t shiftReg;

- int buffer;

- int buffer2;

- int buffer3;

- int buff;

- int samples;

- int len;

- enum {

- SUB_NONE,

- SUB_FIRST_HALF,

- SUB_SECOND_HALF,

- SUB_BOTH

- } sub;

- uint8_t *output;

-} Demod;

-

-static RAMFUNC int ManchesterDecoding(int v)

-{

- int bit;

- int modulation;

- int error = 0;

-

- bit = Demod.buffer;

- Demod.buffer = Demod.buffer2;

- Demod.buffer2 = Demod.buffer3;

- Demod.buffer3 = v;

-

- if(Demod.buff < 3) {

- Demod.buff++;

- return FALSE;

+void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) {

+ int i;

+ for (i = 0; i < 8; i++) {

+ rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5);

}

+}

- if(Demod.state==DEMOD_UNSYNCD) {

- Demod.output[Demod.len] = 0xfa;

- Demod.syncBit = 0;

- //Demod.samples = 0;

- Demod.posCount = 1; // This is the first half bit period, so after syncing handle the second part

- if(bit & 0x08) {

- Demod.syncBit = 0x08;

- }

+// Encode SOF only

+static void CodeIClassTagSOF() {

+ ToSendReset();

+ ToSend[++ToSendMax] = 0x1D;

+ ToSendMax++;

+}

- if(bit & 0x04) {

- if(Demod.syncBit) {

- bit <<= 4;

- }

- Demod.syncBit = 0x04;

- }

- if(bit & 0x02) {

- if(Demod.syncBit) {

- bit <<= 2;

- }

- Demod.syncBit = 0x02;

- }

+static void AppendCrc(uint8_t *data, int len) {

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

+}

- if(bit & 0x01 && Demod.syncBit) {

- Demod.syncBit = 0x01;

- }

-

- if(Demod.syncBit) {

- Demod.len = 0;

- Demod.state = DEMOD_START_OF_COMMUNICATION;

- Demod.sub = SUB_FIRST_HALF;

- Demod.bitCount = 0;

- Demod.shiftReg = 0;

- Demod.parityBits = 0;

- Demod.samples = 0;

- if(Demod.posCount) {

- //if(trigger) LED_A_OFF(); // Not useful in this case...

- switch(Demod.syncBit) {

- case 0x08: Demod.samples = 3; break;

- case 0x04: Demod.samples = 2; break;

- case 0x02: Demod.samples = 1; break;

- case 0x01: Demod.samples = 0; break;

- }

- // SOF must be long burst... otherwise stay unsynced!!!

- if(!(Demod.buffer & Demod.syncBit) || !(Demod.buffer2 & Demod.syncBit)) {

- Demod.state = DEMOD_UNSYNCD;

- }

- else {

- // SOF must be long burst... otherwise stay unsynced!!!

- if(!(Demod.buffer2 & Demod.syncBit) || !(Demod.buffer3 & Demod.syncBit)) {

- Demod.state = DEMOD_UNSYNCD;

- error = 0x88;

- }

- error = 0;

+/**

+ * @brief Does the actual simulation

+ */

+int doIClassSimulation(int simulationMode, uint8_t *reader_mac_buf) {

- }

- else {

- modulation = bit & Demod.syncBit;

- modulation |= ((bit << 1) ^ ((Demod.buffer & 0x08) >> 3)) & Demod.syncBit;

- //modulation = ((bit << 1) ^ ((Demod.buffer & 0x08) >> 3)) & Demod.syncBit;

+ // free eventually allocated BigBuf memory

+ BigBuf_free_keep_EM();

- Demod.samples += 4;

+ uint16_t page_size = 32 * 8;

+ uint8_t current_page = 0;

- if(Demod.posCount==0) {

- Demod.posCount = 1;

- if(modulation) {

- Demod.sub = SUB_FIRST_HALF;

- }

- else {

- Demod.sub = SUB_NONE;

- }

- else {

- Demod.posCount = 0;

- /*(modulation && (Demod.sub == SUB_FIRST_HALF)) {

- if(Demod.state!=DEMOD_ERROR_WAIT) {

- Demod.state = DEMOD_ERROR_WAIT;

- Demod.output[Demod.len] = 0xaa;

- error = 0x01;

- }

- }*/

- //else if(modulation) {

- if(modulation) {

- if(Demod.sub == SUB_FIRST_HALF) {

- Demod.sub = SUB_BOTH;

- }

- else {

- Demod.sub = SUB_SECOND_HALF;

- }

- else if(Demod.sub == SUB_NONE) {

- if(Demod.state == DEMOD_SOF_COMPLETE) {

- Demod.output[Demod.len] = 0x0f;

- Demod.len++;

- Demod.parityBits <<= 1;

- Demod.parityBits ^= OddByteParity[0x0f];

- Demod.state = DEMOD_UNSYNCD;

-// error = 0x0f;

- return TRUE;

- }

- else {

- Demod.state = DEMOD_ERROR_WAIT;

- error = 0x33;

- }

- /*if(Demod.state!=DEMOD_ERROR_WAIT) {

- Demod.state = DEMOD_ERROR_WAIT;

- Demod.output[Demod.len] = 0xaa;

- error = 0x01;

- }*/

- }

+ // maintain cipher states for both credit and debit key for each page

+ State cipher_state_KC[8];

+ State cipher_state_KD[8];

+ State *cipher_state = &cipher_state_KD[0];

- switch(Demod.state) {

- case DEMOD_START_OF_COMMUNICATION:

- if(Demod.sub == SUB_BOTH) {

- //Demod.state = DEMOD_MANCHESTER_D;

- Demod.state = DEMOD_START_OF_COMMUNICATION2;

- Demod.posCount = 1;

- Demod.sub = SUB_NONE;

- }

- else {

- Demod.output[Demod.len] = 0xab;

- Demod.state = DEMOD_ERROR_WAIT;

- error = 0xd2;

- }

- break;

- case DEMOD_START_OF_COMMUNICATION2:

- if(Demod.sub == SUB_SECOND_HALF) {

- Demod.state = DEMOD_START_OF_COMMUNICATION3;

- }

- else {

- Demod.output[Demod.len] = 0xab;

- Demod.state = DEMOD_ERROR_WAIT;

- error = 0xd3;

- }

- break;

- case DEMOD_START_OF_COMMUNICATION3:

- if(Demod.sub == SUB_SECOND_HALF) {

-// Demod.state = DEMOD_MANCHESTER_D;

- Demod.state = DEMOD_SOF_COMPLETE;

- //Demod.output[Demod.len] = Demod.syncBit & 0xFF;

- //Demod.len++;

- }

- else {

- Demod.output[Demod.len] = 0xab;

- Demod.state = DEMOD_ERROR_WAIT;

- error = 0xd4;

- }

- break;

- case DEMOD_SOF_COMPLETE:

- case DEMOD_MANCHESTER_D:

- case DEMOD_MANCHESTER_E:

- // OPPOSITE FROM ISO14443 - 11110000 = 0 (1 in 14443)

- // 00001111 = 1 (0 in 14443)

- if(Demod.sub == SUB_SECOND_HALF) { // SUB_FIRST_HALF

- Demod.bitCount++;

- Demod.shiftReg = (Demod.shiftReg >> 1) ^ 0x100;

- Demod.state = DEMOD_MANCHESTER_D;

- }

- else if(Demod.sub == SUB_FIRST_HALF) { // SUB_SECOND_HALF

- Demod.bitCount++;

- Demod.shiftReg >>= 1;

- Demod.state = DEMOD_MANCHESTER_E;

- }

- else if(Demod.sub == SUB_BOTH) {

- Demod.state = DEMOD_MANCHESTER_F;

- }

- else {

- Demod.state = DEMOD_ERROR_WAIT;

- error = 0x55;

- }

- break;

-

- case DEMOD_MANCHESTER_F:

- // Tag response does not need to be a complete byte!

- if(Demod.len > 0 || Demod.bitCount > 0) {

- if(Demod.bitCount > 1) { // was > 0, do not interpret last closing bit, is part of EOF

- Demod.shiftReg >>= (9 - Demod.bitCount);

- Demod.output[Demod.len] = Demod.shiftReg & 0xff;

- Demod.len++;

- // No parity bit, so just shift a 0

- Demod.parityBits <<= 1;

- }

+ uint8_t *emulator = BigBuf_get_EM_addr();

+ uint8_t *csn = emulator;

- Demod.state = DEMOD_UNSYNCD;

- return TRUE;

- }

- else {

- Demod.output[Demod.len] = 0xad;

- Demod.state = DEMOD_ERROR_WAIT;

- error = 0x03;

- }

- break;

+ // CSN followed by two CRC bytes

+ uint8_t anticoll_data[10];

+ uint8_t csn_data[10];

+ memcpy(csn_data, csn, sizeof(csn_data));

+ Dbprintf("Simulating CSN %02x%02x%02x%02x%02x%02x%02x%02x", csn[0], csn[1], csn[2], csn[3], csn[4], csn[5], csn[6], csn[7]);

- case DEMOD_ERROR_WAIT:

- Demod.state = DEMOD_UNSYNCD;

- break;

+ // Construct anticollision-CSN

+ rotateCSN(csn_data, anticoll_data);

- default:

- Demod.output[Demod.len] = 0xdd;

- Demod.state = DEMOD_UNSYNCD;

- break;

- }

+ // Compute CRC on both CSNs

+ AppendCrc(anticoll_data, 8);

+ AppendCrc(csn_data, 8);

- /*if(Demod.bitCount>=9) {

- Demod.output[Demod.len] = Demod.shiftReg & 0xff;

- Demod.len++;

+ uint8_t diversified_key_d[8] = { 0x00 };

+ uint8_t diversified_key_c[8] = { 0x00 };

+ uint8_t *diversified_key = diversified_key_d;

- Demod.parityBits <<= 1;

- Demod.parityBits ^= ((Demod.shiftReg >> 8) & 0x01);

+ // configuration block

+ uint8_t conf_block[10] = {0x12, 0xFF, 0xFF, 0xFF, 0x7F, 0x1F, 0xFF, 0x3C, 0x00, 0x00};

- Demod.bitCount = 0;

- Demod.shiftReg = 0;

- }*/

- if(Demod.bitCount>=8) {

- Demod.shiftReg >>= 1;

- Demod.output[Demod.len] = (Demod.shiftReg & 0xff);

- Demod.len++;

+ // e-Purse

+ uint8_t card_challenge_data[8] = { 0xfe, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff };

+

+ if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ // initialize from page 0

+ memcpy(conf_block, emulator + 8 * 1, 8);

+ memcpy(card_challenge_data, emulator + 8 * 2, 8); // e-purse

+ memcpy(diversified_key_d, emulator + 8 * 3, 8); // Kd

+ memcpy(diversified_key_c, emulator + 8 * 4, 8); // Kc

+ }

- // FOR ISO15639 PARITY NOT SEND OTA, JUST CALCULATE IT FOR THE CLIENT

- Demod.parityBits <<= 1;

- Demod.parityBits ^= OddByteParity[(Demod.shiftReg & 0xff)];

+ AppendCrc(conf_block, 8);

- Demod.bitCount = 0;

- Demod.shiftReg = 0;

- }

+ // save card challenge for sim2,4 attack

+ if (reader_mac_buf != NULL) {

+ memcpy(reader_mac_buf, card_challenge_data, 8);

+ }

- if(error) {

- Demod.output[Demod.len] = 0xBB;

- Demod.len++;

- Demod.output[Demod.len] = error & 0xFF;

- Demod.len++;

- Demod.output[Demod.len] = 0xBB;

- Demod.len++;

- Demod.output[Demod.len] = bit & 0xFF;

- Demod.len++;

- Demod.output[Demod.len] = Demod.buffer & 0xFF;

- Demod.len++;

- // Look harder ;-)

- Demod.output[Demod.len] = Demod.buffer2 & 0xFF;

- Demod.len++;

- Demod.output[Demod.len] = Demod.syncBit & 0xFF;

- Demod.len++;

- Demod.output[Demod.len] = 0xBB;

- Demod.len++;

- return TRUE;

- }

+ if (conf_block[5] & 0x80) {

+ page_size = 256 * 8;

+ }

+ // From PicoPass DS:

+ // When the page is in personalization mode this bit is equal to 1.

+ // Once the application issuer has personalized and coded its dedicated areas, this bit must be set to 0:

+ // the page is then "in application mode".

+ bool personalization_mode = conf_block[7] & 0x80;

+

+ // chip memory may be divided in 8 pages

+ uint8_t max_page = conf_block[4] & 0x10 ? 0 : 7;

+

+ // Precalculate the cipher states, feeding it the CC

+ cipher_state_KD[0] = opt_doTagMAC_1(card_challenge_data, diversified_key_d);

+ cipher_state_KC[0] = opt_doTagMAC_1(card_challenge_data, diversified_key_c);

+ if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ for (int i = 1; i < max_page; i++) {

+ uint8_t *epurse = emulator + i*page_size + 8*2;

+ uint8_t *Kd = emulator + i*page_size + 8*3;

+ uint8_t *Kc = emulator + i*page_size + 8*4;

+ cipher_state_KD[i] = opt_doTagMAC_1(epurse, Kd);

+ cipher_state_KC[i] = opt_doTagMAC_1(epurse, Kc);

}

+ }

- } // end (state != UNSYNCED)

+ int exitLoop = 0;

+ // Reader 0a

+ // Tag 0f

+ // Reader 0c

+ // Tag anticoll. CSN

+ // Reader 81 anticoll. CSN

+ // Tag CSN

- return FALSE;

-}

+ uint8_t *modulated_response;

+ int modulated_response_size = 0;

+ uint8_t *trace_data = NULL;

+ int trace_data_size = 0;

-//=============================================================================

-// Finally, a `sniffer' for iClass communication

-// Both sides of communication!

-//=============================================================================

+ // Respond SOF -- takes 1 bytes

+ uint8_t *resp_sof = BigBuf_malloc(1);

+ int resp_sof_Len;

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

-// Record the sequence of commands sent by the reader to the tag, with

-// triggering so that we start recording at the point that the tag is moved

-// near the reader.

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

-void RAMFUNC SnoopIClass(void)

-{

-

- // 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.

- //int triggered = FALSE; // FALSE to wait first for card

-

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

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

- // So 32 should be enough!

- uint8_t *readerToTagCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);

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

- uint8_t *tagToReaderResponse = (((uint8_t *)BigBuf) + RECV_RES_OFFSET);

-

- FpgaDownloadAndGo(FPGA_BITSTREAM_HF);

-

- // reset traceLen to 0

- iso14a_set_tracing(TRUE);

- iso14a_clear_trace();

- iso14a_set_trigger(FALSE);

-

- // The DMA buffer, used to stream samples from the FPGA

- int8_t *dmaBuf = ((int8_t *)BigBuf) + DMA_BUFFER_OFFSET;

- int lastRxCounter;

- int8_t *upTo;

- int smpl;

- int maxBehindBy = 0;

-

- // Count of samples received so far, so that we can include timing

- // information in the trace buffer.

- int samples = 0;

- rsamples = 0;

-

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

- Demod.output = tagToReaderResponse;

- Demod.len = 0;

- Demod.state = DEMOD_UNSYNCD;

-

- // Setup for the DMA.

- FpgaSetupSsc();

- upTo = dmaBuf;

- lastRxCounter = DMA_BUFFER_SIZE;

- FpgaSetupSscDma((uint8_t *)dmaBuf, DMA_BUFFER_SIZE);

-

- // And the reader -> tag commands

- memset(&Uart, 0, sizeof(Uart));

- Uart.output = readerToTagCmd;

- Uart.byteCntMax = 32; // was 100 (greg)////////////////////////////////////////////////////////////////////////

- Uart.state = STATE_UNSYNCD;

-

- // And put the FPGA in the appropriate mode

- // Signal field is off with the appropriate LED

- LED_D_OFF();

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_SNIFFER);

- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);

-

- uint32_t time_0 = GetCountSspClk();

-

- int div = 0;

- //int div2 = 0;

- int decbyte = 0;

- int decbyter = 0;

-

- // And now we loop, receiving samples.

- for(;;) {

- LED_A_ON();

- WDT_HIT();

- int behindBy = (lastRxCounter - AT91C_BASE_PDC_SSC->PDC_RCR) &

- (DMA_BUFFER_SIZE-1);

- if(behindBy > maxBehindBy) {

- maxBehindBy = behindBy;

- if(behindBy > 400) {

- Dbprintf("blew circular buffer! behindBy=0x%x", behindBy);

- goto done;

- }

- if(behindBy < 1) continue;

+ // Anticollision CSN (rotated CSN)

+ // 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte)

+ uint8_t *resp_anticoll = BigBuf_malloc(22);

+ int resp_anticoll_len;

+

+ // CSN (block 0)

+ // 22: Takes 2 bytes for SOF/EOF and 10 * 2 = 20 bytes (2 bytes/byte)

+ uint8_t *resp_csn = BigBuf_malloc(22);

+ int resp_csn_len;

+

+ // configuration (block 1) picopass 2ks

+ uint8_t *resp_conf = BigBuf_malloc(22);

+ int resp_conf_len;

+

+ // e-Purse (block 2)

+ // 18: Takes 2 bytes for SOF/EOF and 8 * 2 = 16 bytes (2 bytes/bit)

+ uint8_t *resp_cc = BigBuf_malloc(18);

+ int resp_cc_len;

+

+ // Kd, Kc (blocks 3 and 4). Cannot be read. Always respond with 0xff bytes only

+ uint8_t *resp_ff = BigBuf_malloc(22);

+ int resp_ff_len;

+ uint8_t ff_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00};

+ AppendCrc(ff_data, 8);

+

+ // Application Issuer Area (block 5)

+ uint8_t *resp_aia = BigBuf_malloc(22);

+ int resp_aia_len;

+ uint8_t aia_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00};

+ AppendCrc(aia_data, 8);

+

+ uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);

+ int len;

- LED_A_OFF();

- smpl = upTo[0];

- upTo++;

- lastRxCounter -= 1;

- if(upTo - dmaBuf > DMA_BUFFER_SIZE) {

- upTo -= DMA_BUFFER_SIZE;

- lastRxCounter += DMA_BUFFER_SIZE;

- AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) upTo;

- AT91C_BASE_PDC_SSC->PDC_RNCR = DMA_BUFFER_SIZE;

- }

-

- //samples += 4;

- samples += 1;

-

- if(smpl & 0xF) {

- decbyte ^= (1 << (3 - div));

- }

-

- // FOR READER SIDE COMMUMICATION...

+ // Prepare card messages

- decbyter <<= 2;

- decbyter ^= (smpl & 0x30);

+ // First card answer: SOF only

+ CodeIClassTagSOF();

+ memcpy(resp_sof, ToSend, ToSendMax);

+ resp_sof_Len = ToSendMax;

- div++;

-

- if((div + 1) % 2 == 0) {

- smpl = decbyter;

- if(OutOfNDecoding((smpl & 0xF0) >> 4)) {

- rsamples = samples - Uart.samples;

- LED_C_ON();

-

- //if(!LogTrace(Uart.output,Uart.byteCnt, rsamples, Uart.parityBits,TRUE)) break;

- //if(!LogTrace(NULL, 0, Uart.endTime*16 - DELAY_READER_AIR2ARM_AS_SNIFFER, 0, TRUE)) break;

- if(tracing)

- {

- LogTrace(Uart.output,Uart.byteCnt, (GetCountSspClk()-time_0) << 4, Uart.parityBits,TRUE);

- LogTrace(NULL, 0, (GetCountSspClk()-time_0) << 4, 0, TRUE);

- }

+ // Anticollision CSN

+ CodeIso15693AsTag(anticoll_data, sizeof(anticoll_data));

+ memcpy(resp_anticoll, ToSend, ToSendMax);

+ resp_anticoll_len = ToSendMax;

+

+ // CSN (block 0)

+ CodeIso15693AsTag(csn_data, sizeof(csn_data));

+ memcpy(resp_csn, ToSend, ToSendMax);

+ resp_csn_len = ToSendMax;

+

+ // Configuration (block 1)

+ CodeIso15693AsTag(conf_block, sizeof(conf_block));

+ memcpy(resp_conf, ToSend, ToSendMax);

+ resp_conf_len = ToSendMax;

+

+ // e-Purse (block 2)

+ CodeIso15693AsTag(card_challenge_data, sizeof(card_challenge_data));

+ memcpy(resp_cc, ToSend, ToSendMax);

+ resp_cc_len = ToSendMax;

+

+ // Kd, Kc (blocks 3 and 4)

+ CodeIso15693AsTag(ff_data, sizeof(ff_data));

+ memcpy(resp_ff, ToSend, ToSendMax);

+ resp_ff_len = ToSendMax;

+

+ // Application Issuer Area (block 5)

+ CodeIso15693AsTag(aia_data, sizeof(aia_data));

+ memcpy(resp_aia, ToSend, ToSendMax);

+ resp_aia_len = ToSendMax;

+

+ //This is used for responding to READ-block commands or other data which is dynamically generated

+ uint8_t *data_generic_trace = BigBuf_malloc(32 + 2); // 32 bytes data + 2byte CRC is max tag answer

+ uint8_t *data_response = BigBuf_malloc( (32 + 2) * 2 + 2);

+ bool buttonPressed = false;

+ enum { IDLE, ACTIVATED, SELECTED, HALTED } chip_state = IDLE;

- /* And ready to receive another command. */

- Uart.state = STATE_UNSYNCD;

- /* And also reset the demod code, which might have been */

- /* false-triggered by the commands from the reader. */

- Demod.state = DEMOD_UNSYNCD;

- LED_B_OFF();

- Uart.byteCnt = 0;

+ while (!exitLoop) {

+ WDT_HIT();

+

+ uint32_t reader_eof_time = 0;

+ len = GetIso15693CommandFromReader(receivedCmd, MAX_FRAME_SIZE, &reader_eof_time);

+ if (len < 0) {

+ buttonPressed = true;

+ break;

}

- decbyter = 0;

- }

- if(div > 3) {

- smpl = decbyte;

- if(ManchesterDecoding(smpl & 0x0F)) {

- rsamples = samples - Demod.samples;

- LED_B_ON();

+ // Now look at the reader command and provide appropriate responses

+ // default is no response:

+ modulated_response = NULL;

+ modulated_response_size = 0;

+ trace_data = NULL;

+ trace_data_size = 0;

- if(tracing)

- {

- LogTrace(Demod.output,Demod.len, (GetCountSspClk()-time_0) << 4 , Demod.parityBits,FALSE);

- LogTrace(NULL, 0, (GetCountSspClk()-time_0) << 4, 0, FALSE);

+ if (receivedCmd[0] == ICLASS_CMD_ACTALL && len == 1) {

+ // Reader in anticollision phase

+ if (chip_state != HALTED) {

+ modulated_response = resp_sof;

+ modulated_response_size = resp_sof_Len;

+ chip_state = ACTIVATED;

}

+ } else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) { // identify

+ // Reader asks for anticollision CSN

+ if (chip_state == SELECTED || chip_state == ACTIVATED) {

+ modulated_response = resp_anticoll;

+ modulated_response_size = resp_anticoll_len;

+ trace_data = anticoll_data;

+ trace_data_size = sizeof(anticoll_data);

+ }

- // And ready to receive another response.

- memset(&Demod, 0, sizeof(Demod));

- Demod.output = tagToReaderResponse;

- Demod.state = DEMOD_UNSYNCD;

- LED_C_OFF();

- }

-

- div = 0;

- decbyte = 0x00;

- }

- //}

-

- if(BUTTON_PRESS()) {

- DbpString("cancelled_a");

- goto done;

- }

-

- DbpString("COMMAND FINISHED");

-

- Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);

- Dbprintf("%x %x %x", Uart.byteCntMax, traceLen, (int)Uart.output[0]);

-

-done:

- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;

- Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);

- Dbprintf("%x %x %x", Uart.byteCntMax, traceLen, (int)Uart.output[0]);

- LED_A_OFF();

- LED_B_OFF();

- LED_C_OFF();

- LED_D_OFF();

-}

+ } else if (receivedCmd[0] == ICLASS_CMD_SELECT && len == 9) {

+ // Reader selects anticollision CSN.

+ // Tag sends the corresponding real CSN

+ if (chip_state == ACTIVATED || chip_state == SELECTED) {

+ if (!memcmp(receivedCmd+1, anticoll_data, 8)) {

+ modulated_response = resp_csn;

+ modulated_response_size = resp_csn_len;

+ trace_data = csn_data;

+ trace_data_size = sizeof(csn_data);

+ chip_state = SELECTED;

+ } else {

+ chip_state = IDLE;

+ }

+ } else if (chip_state == HALTED) {

+ // RESELECT with CSN

+ if (!memcmp(receivedCmd+1, csn_data, 8)) {

+ modulated_response = resp_csn;

+ modulated_response_size = resp_csn_len;

+ trace_data = csn_data;

+ trace_data_size = sizeof(csn_data);

+ chip_state = SELECTED;

+ }

-void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN) {

- int i;

- for(i = 0; i < 8; i++) {

- rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5);

- }

-}

+ } else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4) { // read block

+ uint16_t blockNo = receivedCmd[1];

+ if (chip_state == SELECTED) {

+ if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) {

+ // provide defaults for blocks 0 ... 5

+ switch (blockNo) {

+ case 0: // csn (block 00)

+ modulated_response = resp_csn;

+ modulated_response_size = resp_csn_len;

+ trace_data = csn_data;

+ trace_data_size = sizeof(csn_data);

+ break;

+ case 1: // configuration (block 01)

+ modulated_response = resp_conf;

+ modulated_response_size = resp_conf_len;

+ trace_data = conf_block;

+ trace_data_size = sizeof(conf_block);

+ break;

+ case 2: // e-purse (block 02)

+ modulated_response = resp_cc;

+ modulated_response_size = resp_cc_len;

+ trace_data = card_challenge_data;

+ trace_data_size = sizeof(card_challenge_data);

+ // set epurse of sim2,4 attack

+ if (reader_mac_buf != NULL) {

+ memcpy(reader_mac_buf, card_challenge_data, 8);

+ }

+ break;

+ case 3:

+ case 4: // Kd, Kc, always respond with 0xff bytes

+ modulated_response = resp_ff;

+ modulated_response_size = resp_ff_len;

+ trace_data = ff_data;

+ trace_data_size = sizeof(ff_data);

+ break;

+ case 5: // Application Issuer Area (block 05)

+ modulated_response = resp_aia;

+ modulated_response_size = resp_aia_len;

+ trace_data = aia_data;

+ trace_data_size = sizeof(aia_data);

+ break;

+ // default: don't respond

+ }

+ } else if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ if (blockNo == 3 || blockNo == 4) { // Kd, Kc, always respond with 0xff bytes

+ modulated_response = resp_ff;

+ modulated_response_size = resp_ff_len;

+ trace_data = ff_data;

+ trace_data_size = sizeof(ff_data);

+ } else { // use data from emulator memory

+ memcpy(data_generic_trace, emulator + current_page*page_size + 8*blockNo, 8);

+ AppendCrc(data_generic_trace, 8);

+ trace_data = data_generic_trace;

+ trace_data_size = 10;

+ CodeIso15693AsTag(trace_data, trace_data_size);

+ memcpy(data_response, ToSend, ToSendMax);

+ modulated_response = data_response;

+ modulated_response_size = ToSendMax;

+ }

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

-// Wait for commands from reader

-// Stop when button is pressed

-// Or return TRUE when command is captured

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

-static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen)

-{

- // Set FPGA mode to "simulated ISO 14443 tag", no modulation (listen

- // only, since we are receiving, not transmitting).

- // Signal field is off with the appropriate LED

- LED_D_OFF();

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);

-

- // Now run a `software UART' on the stream of incoming samples.

- Uart.output = received;

- Uart.byteCntMax = maxLen;

- Uart.state = STATE_UNSYNCD;

-

- for(;;) {

- WDT_HIT();

-

- if(BUTTON_PRESS()) return FALSE;

-

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {

- AT91C_BASE_SSC->SSC_THR = 0x00;

- }

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {

- uint8_t b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;

- /*if(OutOfNDecoding((b & 0xf0) >> 4)) {

- *len = Uart.byteCnt;

- return TRUE;

- }*/

- if(OutOfNDecoding(b & 0x0f)) {

- *len = Uart.byteCnt;

- return TRUE;

+ } else if ((receivedCmd[0] == ICLASS_CMD_READCHECK_KD

+ || receivedCmd[0] == ICLASS_CMD_READCHECK_KC) && receivedCmd[1] == 0x02 && len == 2) {

+ // Read e-purse (88 02 || 18 02)

+ if (chip_state == SELECTED) {

+ if(receivedCmd[0] == ICLASS_CMD_READCHECK_KD){

+ cipher_state = &cipher_state_KD[current_page];

+ diversified_key = diversified_key_d;

+ } else {

+ cipher_state = &cipher_state_KC[current_page];

+ diversified_key = diversified_key_c;

+ }

+ modulated_response = resp_cc;

+ modulated_response_size = resp_cc_len;

+ trace_data = card_challenge_data;

+ trace_data_size = sizeof(card_challenge_data);

}

- }

-}

+ } else if ((receivedCmd[0] == ICLASS_CMD_CHECK_KC

+ || receivedCmd[0] == ICLASS_CMD_CHECK_KD) && len == 9) {

+ // Reader random and reader MAC!!!

+ if (chip_state == SELECTED) {

+ if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ //NR, from reader, is in receivedCmd+1

+ opt_doTagMAC_2(*cipher_state, receivedCmd+1, data_generic_trace, diversified_key);

+ trace_data = data_generic_trace;

+ trace_data_size = 4;

+ CodeIso15693AsTag(trace_data, trace_data_size);

+ memcpy(data_response, ToSend, ToSendMax);

+ modulated_response = data_response;

+ modulated_response_size = ToSendMax;

+ //exitLoop = true;

+ } else { // Not fullsim, we don't respond

+ // We do not know what to answer, so lets keep quiet

+ if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) {

+ if (reader_mac_buf != NULL) {

+ // save NR and MAC for sim 2,4

+ memcpy(reader_mac_buf + 8, receivedCmd + 1, 8);

+ }

+ exitLoop = true;

+ }

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

-// Prepare tag messages

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

-static void CodeIClassTagAnswer(const uint8_t *cmd, int len)

-{

- //So far a dummy implementation, not used

- //int lastProxToAirDuration =0;

- int i;

+ } else if (receivedCmd[0] == ICLASS_CMD_HALT && len == 1) {

+ if (chip_state == SELECTED) {

+ // Reader ends the session

+ modulated_response = resp_sof;

+ modulated_response_size = resp_sof_Len;

+ chip_state = HALTED;

+ }

+

+ } else if (simulationMode == ICLASS_SIM_MODE_FULL && receivedCmd[0] == ICLASS_CMD_READ4 && len == 4) { // 0x06

+ //Read 4 blocks

+ if (chip_state == SELECTED) {

+ uint8_t blockNo = receivedCmd[1];

+ memcpy(data_generic_trace, emulator + current_page*page_size + blockNo*8, 8 * 4);

+ AppendCrc(data_generic_trace, 8 * 4);

+ trace_data = data_generic_trace;

+ trace_data_size = 8 * 4 + 2;

+ CodeIso15693AsTag(trace_data, trace_data_size);

+ memcpy(data_response, ToSend, ToSendMax);

+ modulated_response = data_response;

+ modulated_response_size = ToSendMax;

+ }

+

+ } else if (receivedCmd[0] == ICLASS_CMD_UPDATE && (len == 12 || len == 14)) {

+ // We're expected to respond with the data+crc, exactly what's already in the receivedCmd

+ // receivedCmd is now UPDATE 1b | ADDRESS 1b | DATA 8b | Signature 4b or CRC 2b

+ if (chip_state == SELECTED) {

+ uint8_t blockNo = receivedCmd[1];

+ if (blockNo == 2) { // update e-purse

+ memcpy(card_challenge_data, receivedCmd+2, 8);

+ CodeIso15693AsTag(card_challenge_data, sizeof(card_challenge_data));

+ memcpy(resp_cc, ToSend, ToSendMax);

+ resp_cc_len = ToSendMax;

+ cipher_state_KD[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_d);

+ cipher_state_KC[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_c);

+ if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ memcpy(emulator + current_page*page_size + 8*2, card_challenge_data, 8);

+ }

+ } else if (blockNo == 3) { // update Kd

+ for (int i = 0; i < 8; i++) {

+ if (personalization_mode) {

+ diversified_key_d[i] = receivedCmd[2 + i];

+ } else {

+ diversified_key_d[i] ^= receivedCmd[2 + i];

+ }

+ cipher_state_KD[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_d);

+ if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ memcpy(emulator + current_page*page_size + 8*3, diversified_key_d, 8);

+ }

+ } else if (blockNo == 4) { // update Kc

+ for (int i = 0; i < 8; i++) {

+ if (personalization_mode) {

+ diversified_key_c[i] = receivedCmd[2 + i];

+ } else {

+ diversified_key_c[i] ^= receivedCmd[2 + i];

+ }

+ cipher_state_KC[current_page] = opt_doTagMAC_1(card_challenge_data, diversified_key_c);

+ if (simulationMode == ICLASS_SIM_MODE_FULL) {

+ memcpy(emulator + current_page*page_size + 8*4, diversified_key_c, 8);

+ }

+ } else if (simulationMode == ICLASS_SIM_MODE_FULL) { // update any other data block

+ memcpy(emulator + current_page*page_size + 8*blockNo, receivedCmd+2, 8);

+ }

+ memcpy(data_generic_trace, receivedCmd + 2, 8);

+ AppendCrc(data_generic_trace, 8);

+ trace_data = data_generic_trace;

+ trace_data_size = 10;

+ CodeIso15693AsTag(trace_data, trace_data_size);

+ memcpy(data_response, ToSend, ToSendMax);

+ modulated_response = data_response;

+ modulated_response_size = ToSendMax;

+ }

+

+ } else if (receivedCmd[0] == ICLASS_CMD_PAGESEL && len == 4) {

+ // Pagesel

+ // Chips with a single page will not answer to this command

+ // Otherwise, we should answer 8bytes (conf block 1) + 2bytes CRC

+ if (chip_state == SELECTED) {

+ if (simulationMode == ICLASS_SIM_MODE_FULL && max_page > 0) {

+ current_page = receivedCmd[1];

+ memcpy(data_generic_trace, emulator + current_page*page_size + 8*1, 8);

+ memcpy(diversified_key_d, emulator + current_page*page_size + 8*3, 8);

+ memcpy(diversified_key_c, emulator + current_page*page_size + 8*4, 8);

+ cipher_state = &cipher_state_KD[current_page];

+ personalization_mode = data_generic_trace[7] & 0x80;

+ AppendCrc(data_generic_trace, 8);

+ trace_data = data_generic_trace;

+ trace_data_size = 10;

+ CodeIso15693AsTag(trace_data, trace_data_size);

+ memcpy(data_response, ToSend, ToSendMax);

+ modulated_response = data_response;

+ modulated_response_size = ToSendMax;

+ }

- ToSendReset();

+ } else if (receivedCmd[0] == 0x26 && len == 5) {

+ // standard ISO15693 INVENTORY command. Ignore.

- // Send SOF

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xff;//Proxtoair duration starts here

- ToSend[++ToSendMax] = 0xff;

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xff;

-

- for(i = 0; i < len; i++) {

- int j;

- uint8_t b = cmd[i];

-

- // Data bits

- for(j = 0; j < 8; j++) {

- if(b & 1) {

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xff;

- } else {

- ToSend[++ToSendMax] = 0xff;

- ToSend[++ToSendMax] = 0x00;

+ } else {

+ // don't know how to handle this command

+ char debug_message[250]; // should be enough

+ sprintf(debug_message, "Unhandled command (len = %d) received from reader:", len);

+ for (int i = 0; i < len && strlen(debug_message) < sizeof(debug_message) - 3 - 1; i++) {

+ sprintf(debug_message + strlen(debug_message), " %02x", receivedCmd[i]);

}

- b >>= 1;

+ Dbprintf("%s", debug_message);

+ // Do not respond

}

- }

- // Send EOF

- ToSend[++ToSendMax] = 0xff;

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xff;

- ToSend[++ToSendMax] = 0x00;

+ /**

+ A legit tag has about 273,4us delay between reader EOT and tag SOF.

+ **/

+ if (modulated_response_size > 0) {

+ uint32_t response_time = reader_eof_time + DELAY_ICLASS_VCD_TO_VICC_SIM;

+ TransmitTo15693Reader(modulated_response, modulated_response_size, &response_time, 0, false);

+ LogTrace_ISO15693(trace_data, trace_data_size, response_time*32, response_time*32 + modulated_response_size*32*64, NULL, false);

+ }

- //lastProxToAirDuration = 8*ToSendMax - 3*8 - 3*8;//Not counting zeroes in the beginning or end

+ }

- // Convert from last byte pos to length

- ToSendMax++;

+ if (buttonPressed)

+ {

+ DbpString("Button pressed");

+ }

+ return buttonPressed;

}

-// Only SOF

-static void CodeIClassTagSOF()

-{

- //So far a dummy implementation, not used

- //int lastProxToAirDuration =0;

-

- ToSendReset();

- // Send SOF

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xff;

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xff;

-

-// lastProxToAirDuration = 8*ToSendMax - 3*8;//Not counting zeroes in the beginning

-

- // Convert from last byte pos to length

- ToSendMax++;

-}

-int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader_mac_buf);

/**

* @brief SimulateIClass simulates an iClass card.

* @param arg0 type of simulation

/**

* @brief SimulateIClass simulates an iClass card.

* @param arg0 type of simulation

- * - 0 uses the first 8 bytes in usb data as CSN

- * - 2 "dismantling iclass"-attack. This mode iterates through all CSN's specified

- * in the usb data. This mode collects MAC from the reader, in order to do an offline

- * attack on the keys. For more info, see "dismantling iclass" and proxclone.com.

- * - Other : Uses the default CSN (031fec8af7ff12e0)

+ * - 0 uses the first 8 bytes in usb data as CSN

+ * - 2 "dismantling iclass"-attack. This mode iterates through all CSN's specified

+ * in the usb data. This mode collects MAC from the reader, in order to do an offline

+ * attack on the keys. For more info, see "dismantling iclass" and proxclone.com.

+ * - Other : Uses the default CSN (031fec8af7ff12e0)

* @param arg1 - number of CSN's contained in datain (applicable for mode 2 only)

* @param arg2

* @param datain

*/

* @param arg1 - number of CSN's contained in datain (applicable for mode 2 only)

* @param arg2

* @param datain

*/

-void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain)

-{

+void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain) {

+

+ LED_A_ON();

+

+ Iso15693InitTag();

+

uint32_t simType = arg0;

uint32_t numberOfCSNS = arg1;

uint32_t simType = arg0;

uint32_t numberOfCSNS = arg1;

- FpgaDownloadAndGo(FPGA_BITSTREAM_HF);

// Enable and clear the trace

- iso14a_set_tracing(TRUE);

- iso14a_clear_trace();

+ set_tracing(true);

+ clear_trace();

+ //Use the emulator memory for SIM

+ uint8_t *emulator = BigBuf_get_EM_addr();

- uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };

- if(simType == 0) {

+ if (simType == ICLASS_SIM_MODE_CSN) {

// Use the CSN from commandline

- memcpy(csn_crc, datain, 8);

- doIClassSimulation(csn_crc,0,NULL);

- }else if(simType == 1)

- {

- doIClassSimulation(csn_crc,0,NULL);

- }

- else if(simType == 2)

- {

-

- uint8_t mac_responses[64] = { 0 };

- Dbprintf("Going into attack mode");

+ memcpy(emulator, datain, 8);

+ doIClassSimulation(ICLASS_SIM_MODE_CSN, NULL);

+ } else if (simType == ICLASS_SIM_MODE_CSN_DEFAULT) {

+ //Default CSN

+ uint8_t csn[] = {0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0};

+ memcpy(emulator, csn, 8);

+ doIClassSimulation(ICLASS_SIM_MODE_CSN, NULL);

+ } else if (simType == ICLASS_SIM_MODE_READER_ATTACK) {

+ uint8_t mac_responses[USB_CMD_DATA_SIZE] = { 0 };

+ Dbprintf("Going into attack mode, %d CSNS sent", numberOfCSNS);

// In this mode, a number of csns are within datain. We'll simulate each one, one at a time

- // in order to collect MAC's from the reader. This can later be used in an offlne-attack

+ // in order to collect MAC's from the reader. This can later be used in an offline-attack

// in order to obtain the keys, as in the "dismantling iclass"-paper.

- int i = 0;

- for( ; i < numberOfCSNS && i*8+8 < USB_CMD_DATA_SIZE; i++)

- {

- // The usb data is 512 bytes, fitting 65 8-byte CSNs in there.

-

- memcpy(csn_crc, datain+(i*8), 8);

- if(doIClassSimulation(csn_crc,1,mac_responses))

- {

- return; // Button pressed

- }

- cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);

-

- }

- else{

+ int i;

+ for (i = 0; i < numberOfCSNS && i*16+16 <= USB_CMD_DATA_SIZE; i++) {

+ // The usb data is 512 bytes, fitting 32 responses (8 byte CC + 4 Byte NR + 4 Byte MAC = 16 Byte response).

+ memcpy(emulator, datain+(i*8), 8);

+ if (doIClassSimulation(ICLASS_SIM_MODE_EXIT_AFTER_MAC, mac_responses+i*16)) {

+ // Button pressed

+ break;

+ }

+ Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x",

+ datain[i*8+0], datain[i*8+1], datain[i*8+2], datain[i*8+3],

+ datain[i*8+4], datain[i*8+5], datain[i*8+6], datain[i*8+7]);

+ Dbprintf("NR,MAC: %02x %02x %02x %02x %02x %02x %02x %02x",

+ mac_responses[i*16+ 8], mac_responses[i*16+ 9], mac_responses[i*16+10], mac_responses[i*16+11],

+ mac_responses[i*16+12], mac_responses[i*16+13], mac_responses[i*16+14], mac_responses[i*16+15]);

+ SpinDelay(100); // give the reader some time to prepare for next CSN

+ }

+ cmd_send(CMD_ACK, CMD_SIMULATE_TAG_ICLASS, i, 0, mac_responses, i*16);

+ } else if (simType == ICLASS_SIM_MODE_FULL) {

+ //This is 'full sim' mode, where we use the emulator storage for data.

+ doIClassSimulation(ICLASS_SIM_MODE_FULL, NULL);

+ } else {

// We may want a mode here where we hardcode the csns to use (from proxclone).

// That will speed things up a little, but not required just yet.

Dbprintf("The mode is not implemented, reserved for future use");

}

// We may want a mode here where we hardcode the csns to use (from proxclone).

// That will speed things up a little, but not required just yet.

Dbprintf("The mode is not implemented, reserved for future use");

}

+

Dbprintf("Done...");

+ LED_A_OFF();

}

-/**

- * @brief Does the actual simulation

- * @param csn - csn to use

- * @param breakAfterMacReceived if true, returns after reader MAC has been received.

- */

-int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader_mac_buf)

-{

- // CSN followed by two CRC bytes

- uint8_t response2[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

- uint8_t response3[] = { 0,0,0,0,0,0,0,0,0,0};

- memcpy(response3,csn,sizeof(response3));

- Dbprintf("Simulating CSN %02x%02x%02x%02x%02x%02x%02x%02x",csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);

- // e-Purse

- uint8_t response4[] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

-

- // Construct anticollision-CSN

- rotateCSN(response3,response2);

-

- // Compute CRC on both CSNs

- ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);

- ComputeCrc14443(CRC_ICLASS, response3, 8, &response3[8], &response3[9]);

+/// THE READER CODE

- int exitLoop = 0;

- // Reader 0a

- // Tag 0f

- // Reader 0c

- // Tag anticoll. CSN

- // Reader 81 anticoll. CSN

- // Tag CSN

+static void ReaderTransmitIClass(uint8_t *frame, int len, uint32_t *start_time) {

- uint8_t *resp;

- int respLen;

- uint8_t* respdata = NULL;

- int respsize = 0;

- uint8_t sof = 0x0f;

+ CodeIso15693AsReader(frame, len);

+ TransmitTo15693Tag(ToSend, ToSendMax, start_time);

+ uint32_t end_time = *start_time + 32*(8*ToSendMax-4); // substract the 4 padding bits after EOF

+ LogTrace_ISO15693(frame, len, *start_time*4, end_time*4, NULL, true);

+}

- // Respond SOF -- takes 8 bytes

- uint8_t *resp1 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET);

- int resp1Len;

- // Anticollision CSN (rotated CSN)

- // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)

- uint8_t *resp2 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 10);

- int resp2Len;

+static bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, size_t max_resp_size,

+ uint8_t expected_size, uint8_t tries, uint32_t start_time, uint32_t timeout, uint32_t *eof_time) {

+ while (tries-- > 0) {

+ ReaderTransmitIClass(command, cmdsize, &start_time);

+ if (expected_size == GetIso15693AnswerFromTag(resp, max_resp_size, timeout, eof_time)) {

+ return true;

+ }

+ return false;//Error

+}

- // CSN

- // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)

- uint8_t *resp3 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 190);

- int resp3Len;

- // e-Purse

- // 144: Takes 16 bytes for SOF/EOF and 8 * 16 = 128 bytes (2 bytes/bit)

- uint8_t *resp4 = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET + 370);

- int resp4Len;

+/**

+ * @brief Selects an iclass tag

+ * @param card_data where the CSN is stored for return

+ * @return false = fail

+ * true = success

+ */

+static bool selectIclassTag(uint8_t *card_data, uint32_t *eof_time) {

+ uint8_t act_all[] = { 0x0a };

+ uint8_t identify[] = { 0x0c };

+ uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

+

+ uint8_t resp[ICLASS_BUFFER_SIZE];

+

+ uint32_t start_time = GetCountSspClk();

+

+ // Send act_all

+ ReaderTransmitIClass(act_all, 1, &start_time);

+ // Card present?

+ if (GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_ACTALL, eof_time) < 0) return false; //Fail

+

+ //Send Identify

+ start_time = *eof_time + DELAY_ICLASS_VICC_TO_VCD_READER;

+ ReaderTransmitIClass(identify, 1, &start_time);

+ //We expect a 10-byte response here, 8 byte anticollision-CSN and 2 byte CRC

+ uint8_t len = GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_OTHERS, eof_time);

+ if (len != 10) return false; //Fail

+

+ //Copy the Anti-collision CSN to our select-packet

+ memcpy(&select[1], resp, 8);

+ //Select the card

+ start_time = *eof_time + DELAY_ICLASS_VICC_TO_VCD_READER;

+ ReaderTransmitIClass(select, sizeof(select), &start_time);

+ //We expect a 10-byte response here, 8 byte CSN and 2 byte CRC

+ len = GetIso15693AnswerFromTag(resp, sizeof(resp), ICLASS_READER_TIMEOUT_OTHERS, eof_time);

+ if (len != 10) return false; //Fail

+

+ //Success - we got CSN

+ //Save CSN in response data

+ memcpy(card_data, resp, 8);

+

+ return true;

+}

- // + 1720..

- uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);

- memset(receivedCmd, 0x44, RECV_CMD_SIZE);

- int len;

- // Prepare card messages

- ToSendMax = 0;

+// Select an iClass tag and read all blocks which are always readable without authentication

+void ReaderIClass(uint8_t flags) {

- // First card answer: SOF

- CodeIClassTagSOF();

- memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax;

+ LED_A_ON();

- // Anticollision CSN

- CodeIClassTagAnswer(response2, sizeof(response2));

- memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax;

+ uint8_t card_data[6 * 8] = {0};

+ memset(card_data, 0xFF, sizeof(card_data));

+ uint8_t resp[ICLASS_BUFFER_SIZE];

+ //Read conf block CRC(0x01) => 0xfa 0x22

+ uint8_t readConf[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x01, 0xfa, 0x22};

+ //Read e-purse block CRC(0x02) => 0x61 0x10

+ uint8_t readEpurse[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x02, 0x61, 0x10};

+ //Read App Issuer Area block CRC(0x05) => 0xde 0x64

+ uint8_t readAA[] = {ICLASS_CMD_READ_OR_IDENTIFY, 0x05, 0xde, 0x64};

- // CSN

- CodeIClassTagAnswer(response3, sizeof(response3));

- memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;

+ uint8_t result_status = 0;

- // e-Purse

- CodeIClassTagAnswer(response4, sizeof(response4));

- memcpy(resp4, ToSend, ToSendMax); resp4Len = ToSendMax;

-

- // Start from off (no field generated)

- //FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- //SpinDelay(200);

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_LISTEN);

- SpinDelay(100);

- StartCountSspClk();

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

- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);

- FpgaSetupSsc();

-

- // To control where we are in the protocol

- int cmdsRecvd = 0;

- uint32_t time_0 = GetCountSspClk();

- uint32_t t2r_time =0;

- uint32_t r2t_time =0;

+ if (flags & FLAG_ICLASS_READER_INIT) {

+ Iso15693InitReader();

+ }

- LED_A_ON();

- bool buttonPressed = false;

+ if (flags & FLAG_ICLASS_READER_CLEARTRACE) {

+ set_tracing(true);

+ clear_trace();

+ StartCountSspClk();

+ }

- /** Hack for testing

- memcpy(reader_mac_buf,csn,8);

- exitLoop = true;

- end hack **/

+ uint32_t start_time = 0;

+ uint32_t eof_time = 0;

- while(!exitLoop) {

+ if (selectIclassTag(resp, &eof_time)) {

+ result_status = FLAG_ICLASS_READER_CSN;

+ memcpy(card_data, resp, 8);

- LED_B_OFF();

- //Signal tracer

- // Can be used to get a trigger for an oscilloscope..

- LED_C_OFF();

+ start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER;

- if(!GetIClassCommandFromReader(receivedCmd, &len, 100)) {

- buttonPressed = true;

- break;

- }

- r2t_time = GetCountSspClk();

- //Signal tracer

- LED_C_ON();

-

- // Okay, look at the command now.

- if(receivedCmd[0] == 0x0a ) {

- // Reader in anticollission phase

- resp = resp1; respLen = resp1Len; //order = 1;

- respdata = &sof;

- respsize = sizeof(sof);

- } else if(receivedCmd[0] == 0x0c) {

- // Reader asks for anticollission CSN

- resp = resp2; respLen = resp2Len; //order = 2;

- respdata = response2;

- respsize = sizeof(response2);

- //DbpString("Reader requests anticollission CSN:");

- } else if(receivedCmd[0] == 0x81) {

- // Reader selects anticollission CSN.

- // Tag sends the corresponding real CSN

- resp = resp3; respLen = resp3Len; //order = 3;

- respdata = response3;

- respsize = sizeof(response3);

- //DbpString("Reader selects anticollission CSN:");

- } else if(receivedCmd[0] == 0x88) {

- // Read e-purse (88 02)

- resp = resp4; respLen = resp4Len; //order = 4;

- respdata = response4;

- respsize = sizeof(response4);

- LED_B_ON();

- } else if(receivedCmd[0] == 0x05) {

- // Reader random and reader MAC!!!

- // Do not respond

- // We do not know what to answer, so lets keep quiet

- resp = resp1; respLen = 0; //order = 5;

- respdata = NULL;

- respsize = 0;

- if (breakAfterMacReceived){

- // dbprintf:ing ...

- Dbprintf("CSN: %02x %02x %02x %02x %02x %02x %02x %02x",csn[0],csn[1],csn[2],csn[3],csn[4],csn[5],csn[6],csn[7]);

- Dbprintf("RDR: (len=%02d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",len,

- receivedCmd[0], receivedCmd[1], receivedCmd[2],

- receivedCmd[3], receivedCmd[4], receivedCmd[5],

- receivedCmd[6], receivedCmd[7], receivedCmd[8]);

- if (reader_mac_buf != NULL)

- {

- memcpy(reader_mac_buf,receivedCmd+1,8);

- }

- exitLoop = true;

+ //Read block 1, config

+ if (flags & FLAG_ICLASS_READER_CONF) {

+ if (sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) {

+ result_status |= FLAG_ICLASS_READER_CONF;

+ memcpy(card_data+8, resp, 8);

+ } else {

+ Dbprintf("Failed to read config block");

}

- } else if(receivedCmd[0] == 0x00 && len == 1) {

- // Reader ends the session

- resp = resp1; respLen = 0; //order = 0;

- respdata = NULL;

- respsize = 0;

- } else {

- //#db# Unknown command received from reader (len=5): 26 1 0 f6 a 44 44 44 44

- // Never seen this command before

- Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",

- len,

- receivedCmd[0], receivedCmd[1], receivedCmd[2],

- receivedCmd[3], receivedCmd[4], receivedCmd[5],

- receivedCmd[6], receivedCmd[7], receivedCmd[8]);

- // Do not respond

- resp = resp1; respLen = 0; //order = 0;

- respdata = NULL;

- respsize = 0;

+ start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER;

}

- if(cmdsRecvd > 100) {

- //DbpString("100 commands later...");

- //break;

- }

- else {

- cmdsRecvd++;

- }

-

- if(respLen > 0) {

- SendIClassAnswer(resp, respLen, 21);

- t2r_time = GetCountSspClk();

+ //Read block 2, e-purse

+ if (flags & FLAG_ICLASS_READER_CC) {

+ if (sendCmdGetResponseWithRetries(readEpurse, sizeof(readEpurse), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) {

+ result_status |= FLAG_ICLASS_READER_CC;

+ memcpy(card_data + (8*2), resp, 8);

+ } else {

+ Dbprintf("Failed to read e-purse");

+ }

+ start_time = eof_time + DELAY_ICLASS_VICC_TO_VCD_READER;

}

- if (tracing) {

- LogTrace(receivedCmd,len, (r2t_time-time_0)<< 4, Uart.parityBits,TRUE);

- LogTrace(NULL,0, (r2t_time-time_0) << 4, 0,TRUE);

-

- if (respdata != NULL) {

- LogTrace(respdata,respsize, (t2r_time-time_0) << 4,SwapBits(GetParity(respdata,respsize),respsize),FALSE);

- LogTrace(NULL,0, (t2r_time-time_0) << 4,0,FALSE);

-

- }

- if(!tracing) {

- DbpString("Trace full");

- //break;

+ //Read block 5, AA

+ if (flags & FLAG_ICLASS_READER_AA) {

+ if (sendCmdGetResponseWithRetries(readAA, sizeof(readAA), resp, sizeof(resp), 10, 10, start_time, ICLASS_READER_TIMEOUT_OTHERS, &eof_time)) {

+ result_status |= FLAG_ICLASS_READER_AA;

+ memcpy(card_data + (8*5), resp, 8);

+ } else {

+ Dbprintf("Failed to read AA block");

}

-

}

- memset(receivedCmd, 0x44, RECV_CMD_SIZE);

}

+

+ cmd_send(CMD_ACK, result_status, 0, 0, card_data, sizeof(card_data));

- //Dbprintf("%x", cmdsRecvd);

LED_A_OFF();

- LED_B_OFF();

- if(buttonPressed)

- {

- DbpString("Button pressed");

- }

- return buttonPressed;

}

-static int SendIClassAnswer(uint8_t *resp, int respLen, int delay)

-{

- int i = 0, d=0;//, u = 0, d = 0;

- uint8_t b = 0;

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR|FPGA_HF_SIMULATOR_MODULATE_424K);

+void iClass_Check(uint8_t *NRMAC) {

+ uint8_t check[9] = {ICLASS_CMD_CHECK_KD, 0x00};

+ uint8_t resp[4];

+ memcpy(check+1, NRMAC, 8);

+ uint32_t eof_time;

+ bool isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, sizeof(resp), 4, 3, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time);

+ cmd_send(CMD_ACK, isOK, 0, 0, resp, sizeof(resp));

+}

- AT91C_BASE_SSC->SSC_THR = 0x00;

- FpgaSetupSsc();

- while(!BUTTON_PRESS()) {

- if((AT91C_BASE_SSC->SSC_SR & AT91C_SSC_RXRDY)){

- b = AT91C_BASE_SSC->SSC_RHR; (void) b;

- }

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)){

- b = 0x00;

- if(d < delay) {

- d++;

- }

- else {

- if( i < respLen){

- b = resp[i];

- //Hack

- //b = 0xAC;

- }

- i++;

- }

- AT91C_BASE_SSC->SSC_THR = b;

- }

- if (i > respLen +4) break;

+void iClass_Readcheck(uint8_t block, bool use_credit_key) {

+ uint8_t readcheck[2] = {ICLASS_CMD_READCHECK_KD, block};

+ if (use_credit_key) {

+ readcheck[0] = ICLASS_CMD_READCHECK_KC;

}

-

- return 0;

+ uint8_t resp[8];

+ uint32_t eof_time;

+ bool isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 8, 3, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time);

+ cmd_send(CMD_ACK, isOK, 0, 0, resp, sizeof(resp));

}

-/// THE READER CODE

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

-// Transmit the command (to the tag) that was placed in ToSend[].

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

-static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int *wait)

-{

- int c;

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);

- AT91C_BASE_SSC->SSC_THR = 0x00;

- FpgaSetupSsc();

-

- if (wait)

- {

- if(*wait < 10) *wait = 10;

-

- for(c = 0; c < *wait;) {

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {

- AT91C_BASE_SSC->SSC_THR = 0x00; // For exact timing!

- c++;

- }

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {

- volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;

- (void)r;

- }

- WDT_HIT();

- }

-

- }

-

- uint8_t sendbyte;

- bool firstpart = TRUE;

- c = 0;

- for(;;) {

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {

-

- // DOUBLE THE SAMPLES!

- if(firstpart) {

- sendbyte = (cmd[c] & 0xf0) | (cmd[c] >> 4);

- }

- else {

- sendbyte = (cmd[c] & 0x0f) | (cmd[c] << 4);

- c++;

- }

- if(sendbyte == 0xff) {

- sendbyte = 0xfe;

- }

- AT91C_BASE_SSC->SSC_THR = sendbyte;

- firstpart = !firstpart;

-

- if(c >= len) {

- break;

- }

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {

- volatile uint32_t r = AT91C_BASE_SSC->SSC_RHR;

- (void)r;

- }

- WDT_HIT();

- }

- if (samples) *samples = (c + *wait) << 3;

-}

+static bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata) {

+ uint8_t readcmd[] = {ICLASS_CMD_READ_OR_IDENTIFY, blockNo, 0x00, 0x00}; //0x88, 0x00 // can i use 0C?

+ uint8_t bl = blockNo;

+ uint16_t rdCrc = iclass_crc16(&bl, 1);

+ readcmd[2] = rdCrc >> 8;

+ readcmd[3] = rdCrc & 0xff;

+ uint8_t resp[10];

+ uint32_t eof_time;

+ bool isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, sizeof(resp), 10, 10, 0, ICLASS_READER_TIMEOUT_OTHERS, &eof_time);

+ memcpy(readdata, resp, sizeof(resp));

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

-// Prepare iClass reader command to send to FPGA

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

-void CodeIClassCommand(const uint8_t * cmd, int len)

-{

- int i, j, k;

- uint8_t b;

-

- ToSendReset();

-

- // Start of Communication: 1 out of 4

- ToSend[++ToSendMax] = 0xf0;

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0x0f;

- ToSend[++ToSendMax] = 0x00;

-

- // Modulate the bytes

- for (i = 0; i < len; i++) {

- b = cmd[i];

- for(j = 0; j < 4; j++) {

- for(k = 0; k < 4; k++) {

- if(k == (b & 3)) {

- ToSend[++ToSendMax] = 0x0f;

- }

- else {

- ToSend[++ToSendMax] = 0x00;

- }

- b >>= 2;

- }

-

- // End of Communication

- ToSend[++ToSendMax] = 0x00;

- ToSend[++ToSendMax] = 0xf0;

- ToSend[++ToSendMax] = 0x00;

-

- // Convert from last character reference to length

- ToSendMax++;

+ return isOK;

}

-void ReaderTransmitIClass(uint8_t* frame, int len)

-{

- int wait = 0;

- int samples = 0;

- int par = 0;

-

- // This is tied to other size changes

- // uint8_t* frame_addr = ((uint8_t*)BigBuf) + 2024;

- CodeIClassCommand(frame,len);

- // Select the card

- TransmitIClassCommand(ToSend, ToSendMax, &samples, &wait);

- if(trigger)

- LED_A_ON();

+void iClass_ReadBlk(uint8_t blockno) {

- // Store reader command in buffer

- if (tracing) LogTrace(frame,len,rsamples,par,TRUE);

-}

+ LED_A_ON();

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

-// Wait a certain time for tag response

-// If a response is captured return TRUE

-// If it takes too long return FALSE

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

-static int GetIClassAnswer(uint8_t *receivedResponse, int maxLen, int *samples, int *elapsed) //uint8_t *buffer

-{

- // buffer needs to be 512 bytes

- int c;

+ uint8_t readblockdata[10];

+ bool isOK = iClass_ReadBlock(blockno, readblockdata);

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ LED_D_OFF();

+ cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8);

- // Set FPGA mode to "reader listen mode", no modulation (listen

- // only, since we are receiving, not transmitting).

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_LISTEN);

+ LED_A_OFF();

+}

- // Now get the answer from the card

- Demod.output = receivedResponse;

- Demod.len = 0;

- Demod.state = DEMOD_UNSYNCD;

- uint8_t b;

- if (elapsed) *elapsed = 0;

+void iClass_Dump(uint8_t startblock, uint8_t numblks) {

- bool skip = FALSE;

+ LED_A_ON();

- c = 0;

- for(;;) {

- WDT_HIT();

+ uint8_t readblockdata[USB_CMD_DATA_SIZE+2] = {0};

+ bool isOK = false;

+ uint16_t blkCnt = 0;

- if(BUTTON_PRESS()) return FALSE;

+ if (numblks > USB_CMD_DATA_SIZE / 8) {

+ numblks = USB_CMD_DATA_SIZE / 8;

+ }

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {

- AT91C_BASE_SSC->SSC_THR = 0x00; // To make use of exact timing of next command from reader!!

- if (elapsed) (*elapsed)++;

- }

- if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {

- if(c < timeout) { c++; } else { return FALSE; }

- b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;

- skip = !skip;

- if(skip) continue;

- /*if(ManchesterDecoding((b>>4) & 0xf)) {

- *samples = ((c - 1) << 3) + 4;

- return TRUE;

- }*/

- if(ManchesterDecoding(b & 0x0f)) {

- *samples = c << 3;

- return TRUE;

- }

+ for (blkCnt = 0; blkCnt < numblks; blkCnt++) {

+ isOK = iClass_ReadBlock(startblock+blkCnt, readblockdata+8*blkCnt);

+ if (!isOK) {

+ Dbprintf("Block %02X failed to read", startblock+blkCnt);

+ break;

}

-}

-int ReaderReceiveIClass(uint8_t* receivedAnswer)

-{

- int samples = 0;

- if (!GetIClassAnswer(receivedAnswer,160,&samples,0)) return FALSE;

- rsamples += samples;

- if (tracing) LogTrace(receivedAnswer,Demod.len,rsamples,Demod.parityBits,FALSE);

- if(samples == 0) return FALSE;

- return Demod.len;

-}

-

-void setupIclassReader()

-{

- FpgaDownloadAndGo(FPGA_BITSTREAM_HF);

- // Reset trace buffer

- iso14a_set_tracing(TRUE);

- iso14a_clear_trace();

-

- // Setup SSC

- FpgaSetupSsc();

- // Start from off (no field generated)

- // Signal field is off with the appropriate LED

- LED_D_OFF();

- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- SpinDelay(200);

-

- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);

-

- // Now give it time to spin up.

- // Signal field is on with the appropriate LED

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);

- SpinDelay(200);

- LED_A_ON();

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ LED_D_OFF();

-}

+ cmd_send(CMD_ACK, isOK, blkCnt, 0, readblockdata, blkCnt*8);

-// Reader iClass Anticollission

-void ReaderIClass(uint8_t arg0) {

- uint8_t act_all[] = { 0x0a };

- uint8_t identify[] = { 0x0c };

- uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

- uint8_t readcheck_cc[]= { 0x88, 0x02 };

-

- uint8_t card_data[24]={0};

- uint8_t last_csn[8]={0};

-

- uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes

-

- int read_status= 0;

- bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;

-

- setupIclassReader();

-

- size_t datasize = 0;

- while(!BUTTON_PRESS())

- {

- WDT_HIT();

-

- // Send act_all

- ReaderTransmitIClass(act_all, 1);

- // Card present?

- if(ReaderReceiveIClass(resp)) {

-

- ReaderTransmitIClass(identify, 1);

-

- if(ReaderReceiveIClass(resp) == 10) {

- //Copy the Anti-collision CSN to our select-packet

- memcpy(&select[1],resp,8);

- //Dbprintf("Anti-collision CSN: %02x %02x %02x %02x %02x %02x %02x %02x",resp[0], resp[1], resp[2],

- // resp[3], resp[4], resp[5],

- // resp[6], resp[7]);

- //Select the card

- ReaderTransmitIClass(select, sizeof(select));

-

- if(ReaderReceiveIClass(resp) == 10) {

- //Save CSN in response data

- memcpy(card_data,resp,8);

- datasize += 8;

- //Flag that we got to at least stage 1, read CSN

- read_status = 1;

-

- // Card selected

- //Dbprintf("Readcheck on Sector 2");

- ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));

- if(ReaderReceiveIClass(resp) == 8) {

- //Save CC (e-purse) in response data

- memcpy(card_data+8,resp,8);

- datasize += 8;

- //Got both

- read_status = 2;

- }

-

- LED_B_ON();

- //Send back to client, but don't bother if we already sent this

- if(memcmp(last_csn, card_data, 8) != 0)

- cmd_send(CMD_ACK,read_status,0,0,card_data,datasize);

-

- //Save that we already sent this....

- if(read_status == 2)

- memcpy(last_csn, card_data, 8);

-

- LED_B_OFF();

-

- if(abort_after_read) break;

- }

-

- if(traceLen > TRACE_SIZE) {

- DbpString("Trace full");

- break;

- }

- LED_A_OFF();

+ LED_A_OFF();

}

-void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {

- uint8_t act_all[] = { 0x0a };

- uint8_t identify[] = { 0x0c };

- uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

- uint8_t readcheck_cc[]= { 0x88, 0x02 };

- uint8_t check[] = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

- uint8_t read[] = { 0x0c, 0x00, 0x00, 0x00 };

-

- uint16_t crc = 0;

- uint8_t cardsize=0;

- bool read_success=false;

- uint8_t mem=0;

-

- static struct memory_t{

- int k16;

- int book;

- int k2;

- int lockauth;

- int keyaccess;

- } memory;

-

- uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes

- setupIclassReader();

+static bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) {

+ uint8_t write[16] = {ICLASS_CMD_UPDATE, blockNo};

+ memcpy(write+2, data, 12); // data + mac

+ AppendCrc(write+1, 13);

+ uint8_t resp[10];

+ bool isOK = false;

+ uint32_t eof_time = 0;

- for(int i=0;i<1;i++) {

+ isOK = sendCmdGetResponseWithRetries(write, sizeof(write), resp, sizeof(resp), 10, 3, 0, ICLASS_READER_TIMEOUT_UPDATE, &eof_time);

+ if (!isOK) {

+ return false;

+ }

- if(traceLen > TRACE_SIZE) {

- DbpString("Trace full");

- break;

+ uint8_t all_ff[8] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

+ if (blockNo == 2) {

+ if (memcmp(data+4, resp, 4) || memcmp(data, resp+4, 4)) { // check response. e-purse update swaps first and second half

+ return false;

}

-

- if (BUTTON_PRESS()) break;

-

- // Send act_all

- ReaderTransmitIClass(act_all, 1);

- // Card present?

- if(ReaderReceiveIClass(resp)) {

- ReaderTransmitIClass(identify, 1);

- if(ReaderReceiveIClass(resp) == 10) {

- // Select card

- memcpy(&select[1],resp,8);

- ReaderTransmitIClass(select, sizeof(select));

-

- if(ReaderReceiveIClass(resp) == 10) {

- Dbprintf(" Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",

- resp[0], resp[1], resp[2],

- resp[3], resp[4], resp[5],

- resp[6], resp[7]);

- }

- // Card selected

- Dbprintf("Readcheck on Sector 2");

- ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));

- if(ReaderReceiveIClass(resp) == 8) {

- Dbprintf(" CC: %02x %02x %02x %02x %02x %02x %02x %02x",

- resp[0], resp[1], resp[2],

- resp[3], resp[4], resp[5],

- resp[6], resp[7]);

- }else return;

- Dbprintf("Authenticate");

- //for now replay captured auth (as cc not updated)

- memcpy(check+5,MAC,4);

- //Dbprintf(" AA: %02x %02x %02x %02x",

- // check[5], check[6], check[7],check[8]);

- ReaderTransmitIClass(check, sizeof(check));

- if(ReaderReceiveIClass(resp) == 4) {

- Dbprintf(" AR: %02x %02x %02x %02x",

- resp[0], resp[1], resp[2],resp[3]);

- }else {

- Dbprintf("Error: Authentication Fail!");

- return;

- }

- Dbprintf("Dump Contents");

- //first get configuration block

- read_success=false;

- read[1]=1;

- uint8_t *blockno=&read[1];

- crc = iclass_crc16((char *)blockno,1);

- read[2] = crc >> 8;

- read[3] = crc & 0xff;

- while(!read_success){

- ReaderTransmitIClass(read, sizeof(read));

- if(ReaderReceiveIClass(resp) == 10) {

- read_success=true;

- mem=resp[5];

- memory.k16= (mem & 0x80);

- memory.book= (mem & 0x20);

- memory.k2= (mem & 0x8);

- memory.lockauth= (mem & 0x2);

- memory.keyaccess= (mem & 0x1);

-

- }

- if (memory.k16){

- cardsize=255;

- }else cardsize=32;

- //then loop around remaining blocks

- for(uint8_t j=0; j<cardsize; j++){

- read_success=false;

- uint8_t *blockno=&j;

- //crc_data[0]=j;

- read[1]=j;

- crc = iclass_crc16((char *)blockno,1);

- read[2] = crc >> 8;

- read[3] = crc & 0xff;

- while(!read_success){

- ReaderTransmitIClass(read, sizeof(read));

- if(ReaderReceiveIClass(resp) == 10) {

- read_success=true;

- Dbprintf(" %02x: %02x %02x %02x %02x %02x %02x %02x %02x",

- j, resp[0], resp[1], resp[2],

- resp[3], resp[4], resp[5],

- resp[6], resp[7]);

- }

+ } else if (blockNo == 3 || blockNo == 4) {

+ if (memcmp(all_ff, resp, 8)) { // check response. Key updates always return 0xffffffffffffffff

+ return false;

+ }

+ } else {

+ if (memcmp(data, resp, 8)) { // check response. All other updates return unchanged data

+ return false;

}

- WDT_HIT();

}

-

- LED_A_OFF();

+

+ return true;

}

-//2. Create Read method (cut-down from above) based off responses from 1.

-// Since we have the MAC could continue to use replay function.

-//3. Create Write method

-/*

-void IClass_iso14443A_write(uint8_t arg0, uint8_t blockNo, uint8_t *data, uint8_t *MAC) {

- uint8_t act_all[] = { 0x0a };

- uint8_t identify[] = { 0x0c };

- uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

- uint8_t readcheck_cc[]= { 0x88, 0x02 };

- uint8_t check[] = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

- uint8_t read[] = { 0x0c, 0x00, 0x00, 0x00 };

- uint8_t write[] = { 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };

-

- uint16_t crc = 0;

-

- uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes

- // Reset trace buffer

- memset(trace, 0x44, RECV_CMD_OFFSET);

- traceLen = 0;

+void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) {

- // Setup SSC

- FpgaSetupSsc();

- // Start from off (no field generated)

- // Signal field is off with the appropriate LED

- LED_D_OFF();

+ LED_A_ON();

+

+ bool isOK = iClass_WriteBlock_ext(blockNo, data);

+ if (isOK) {

+ Dbprintf("Write block [%02x] successful", blockNo);

+ } else {

+ Dbprintf("Write block [%02x] failed", blockNo);

+ }

FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

- SpinDelay(200);

+ LED_D_OFF();

+

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

+ LED_A_OFF();

+}

- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);

- // Now give it time to spin up.

- // Signal field is on with the appropriate LED

- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);

- SpinDelay(200);

+void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {

LED_A_ON();

- for(int i=0;i<1;i++) {

-

- if(traceLen > TRACE_SIZE) {

- DbpString("Trace full");

- break;

- }

-

- if (BUTTON_PRESS()) break;

-

- // Send act_all

- ReaderTransmitIClass(act_all, 1);

- // Card present?

- if(ReaderReceiveIClass(resp)) {

- ReaderTransmitIClass(identify, 1);

- if(ReaderReceiveIClass(resp) == 10) {

- // Select card

- memcpy(&select[1],resp,8);

- ReaderTransmitIClass(select, sizeof(select));

-

- if(ReaderReceiveIClass(resp) == 10) {

- Dbprintf(" Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",

- resp[0], resp[1], resp[2],

- resp[3], resp[4], resp[5],

- resp[6], resp[7]);

- }

- // Card selected

- Dbprintf("Readcheck on Sector 2");

- ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));

- if(ReaderReceiveIClass(resp) == 8) {

- Dbprintf(" CC: %02x %02x %02x %02x %02x %02x %02x %02x",

- resp[0], resp[1], resp[2],

- resp[3], resp[4], resp[5],

- resp[6], resp[7]);

- }else return;

- Dbprintf("Authenticate");

- //for now replay captured auth (as cc not updated)

- memcpy(check+5,MAC,4);

- Dbprintf(" AA: %02x %02x %02x %02x",

- check[5], check[6], check[7],check[8]);

- ReaderTransmitIClass(check, sizeof(check));

- if(ReaderReceiveIClass(resp) == 4) {

- Dbprintf(" AR: %02x %02x %02x %02x",

- resp[0], resp[1], resp[2],resp[3]);

- }else {

- Dbprintf("Error: Authentication Fail!");

- return;

- }

- Dbprintf("Write Block");

-

- //read configuration for max block number

- read_success=false;

- read[1]=1;

- uint8_t *blockno=&read[1];

- crc = iclass_crc16((char *)blockno,1);

- read[2] = crc >> 8;

- read[3] = crc & 0xff;

- while(!read_success){

- ReaderTransmitIClass(read, sizeof(read));

- if(ReaderReceiveIClass(resp) == 10) {

- read_success=true;

- mem=resp[5];

- memory.k16= (mem & 0x80);

- memory.book= (mem & 0x20);

- memory.k2= (mem & 0x8);

- memory.lockauth= (mem & 0x2);

- memory.keyaccess= (mem & 0x1);

-

- }

- if (memory.k16){

- cardsize=255;

- }else cardsize=32;

- //check card_size

-

- memcpy(write+1,blockNo,1);

- memcpy(write+2,data,8);

- memcpy(write+10,mac,4);

- while(!send_success){

- ReaderTransmitIClass(write, sizeof(write));

- if(ReaderReceiveIClass(resp) == 10) {

- write_success=true;

- }

- }//

+ int written = 0;

+ int total_blocks = (endblock - startblock) + 1;

+

+ for (uint8_t block = startblock; block <= endblock; block++) {

+ // block number

+ if (iClass_WriteBlock_ext(block, data + (block-startblock)*12)) {

+ Dbprintf("Write block [%02x] successful", block);

+ written++;

+ } else {

+ Dbprintf("Write block [%02x] failed", block);

}

- WDT_HIT();

}

-

+

+ if (written == total_blocks)

+ Dbprintf("Clone complete");

+ else

+ Dbprintf("Clone incomplete");

+

+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);

+ LED_D_OFF();

+

+ cmd_send(CMD_ACK, 1, 0, 0, 0, 0);

LED_A_OFF();

-}*/

+}