Fix detection of AVX512 support for Apple clang compiler

[proxmark3-svn] / armsrc / iclass.c

diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index 1a3751182f6e9553bb944ba405fe081861e4d3c8..32f9594b60926da854d902e458d52622d0ec3d24 100644 (file)
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -47,6 +47,9 @@
 // different initial value (CRC_ICLASS)
 #include "iso14443crc.h"
 #include "iso15693tools.h"
 // different initial value (CRC_ICLASS)
 #include "iso14443crc.h"
 #include "iso15693tools.h"

+#include "protocols.h"
+#include "optimized_cipher.h"
+#include "usb_cdc.h" // for usb_poll_validate_length

 
 static int timeout = 4096;
 
 
 static int timeout = 4096;
 


@@ -652,9 +655,8 @@ void RAMFUNC SnoopIClass(void)
     // The DMA buffer, used to stream samples from the FPGA
     uint8_t *dmaBuf = BigBuf_malloc(DMA_BUFFER_SIZE);
  
     // The DMA buffer, used to stream samples from the FPGA
     uint8_t *dmaBuf = BigBuf_malloc(DMA_BUFFER_SIZE);
  

-       // reset traceLen to 0
-    iso14a_set_tracing(TRUE);
-    iso14a_clear_trace();
+       set_tracing(TRUE);
+       clear_trace();

     iso14a_set_trigger(FALSE);
 
        int lastRxCounter;
     iso14a_set_trigger(FALSE);
 
        int lastRxCounter;


@@ -805,12 +807,12 @@ void RAMFUNC SnoopIClass(void)
     DbpString("COMMAND FINISHED");
 
     Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);
     DbpString("COMMAND FINISHED");
 
     Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);

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

 
 done:
     AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;
     Dbprintf("%x %x %x", maxBehindBy, Uart.state, Uart.byteCnt);
 
 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]);
+       Dbprintf("%x %x %x", Uart.byteCntMax, BigBuf_get_traceLen(), (int)Uart.output[0]);

     LED_A_OFF();
     LED_B_OFF();
     LED_C_OFF();
     LED_A_OFF();
     LED_B_OFF();
     LED_C_OFF();


@@ -966,8 +968,11 @@ static void CodeIClassTagSOF()
        // Convert from last byte pos to length
        ToSendMax++;
 }
        // Convert from last byte pos to length
        ToSendMax++;
 }

+#define MODE_SIM_CSN        0
+#define MODE_EXIT_AFTER_MAC 1
+#define MODE_FULLSIM        2

 
 

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


@@ -987,17 +992,22 @@ void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain
        FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
 
        // Enable and clear the trace
        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) {
                // Use the CSN from commandline
        if(simType == 0) {
                // Use the CSN from commandline

-               memcpy(csn_crc, datain, 8);
-               doIClassSimulation(csn_crc,0,NULL);
+               memcpy(emulator, datain, 8);
+               doIClassSimulation(MODE_SIM_CSN,NULL);

        }else if(simType == 1)
        {
        }else if(simType == 1)
        {

-               doIClassSimulation(csn_crc,0,NULL);
+               //Default CSN
+               uint8_t csn_crc[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };
+               // Use the CSN from commandline
+               memcpy(emulator, csn_crc, 8);
+               doIClassSimulation(MODE_SIM_CSN,NULL);

        }
        else if(simType == 2)
        {
        }
        else if(simType == 2)
        {


@@ -1012,8 +1022,8 @@ void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain
                {
                        // The usb data is 512 bytes, fitting 65 8-byte CSNs in there.
 
                {
                        // 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+i*8))
+                       memcpy(emulator, datain+(i*8), 8);
+                       if(doIClassSimulation(MODE_EXIT_AFTER_MAC,mac_responses+i*8))

                        {
                                cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);
                                return; // Button pressed
                        {
                                cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);
                                return; // Button pressed


@@ -1021,6 +1031,9 @@ void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain
                }
                cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);
 
                }
                cmd_send(CMD_ACK,CMD_SIMULATE_TAG_ICLASS,i,0,mac_responses,i*8);
 

+       }else if(simType == 3){
+               //This is 'full sim' mode, where we use the emulator storage for data.
+               doIClassSimulation(MODE_FULLSIM, NULL);

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


@@ -1030,29 +1043,54 @@ void SimulateIClass(uint32_t arg0, uint32_t arg1, uint32_t arg2, uint8_t *datain
        Dbprintf("Done...");
 
 }
        Dbprintf("Done...");
 
 }

+void AppendCrc(uint8_t* data, int len)
+{
+       ComputeCrc14443(CRC_ICLASS,data,len,data+len,data+len+1);
+}
+

 /**
  * @brief Does the actual simulation
  * @param csn - csn to use
  * @param breakAfterMacReceived if true, returns after reader MAC has been received.
  */
 /**
  * @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)
+int doIClassSimulation( int simulationMode, uint8_t *reader_mac_buf)

 {
 {

+       // free eventually allocated BigBuf memory
+       BigBuf_free_keep_EM();

 
 

+       State cipher_state;
+//     State cipher_state_reserve;
+       uint8_t *csn = BigBuf_get_EM_addr();
+       uint8_t *emulator = csn;
+       uint8_t sof_data[] = { 0x0F} ;

        // CSN followed by two CRC bytes
        // CSN followed by two CRC bytes

-       uint8_t response1[] = { 0x0F} ;
-       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));
+       uint8_t anticoll_data[10] = { 0 };
+       uint8_t csn_data[10] = { 0 };
+       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]);
        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
 
        // Construct anticollision-CSN

-       rotateCSN(response3,response2);
+       rotateCSN(csn_data,anticoll_data);

 
        // Compute CRC on both CSNs
 
        // Compute CRC on both CSNs

-       ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);
-       ComputeCrc14443(CRC_ICLASS, response3, 8, &response3[8], &response3[9]);
+       ComputeCrc14443(CRC_ICLASS, anticoll_data, 8, &anticoll_data[8], &anticoll_data[9]);
+       ComputeCrc14443(CRC_ICLASS, csn_data, 8, &csn_data[8], &csn_data[9]);
+
+       uint8_t diversified_key[8] = { 0 };
+       // e-Purse
+       uint8_t card_challenge_data[8] = { 0x00 };
+       if(simulationMode == MODE_FULLSIM)
+       {
+               //The diversified key should be stored on block 3
+               //Get the diversified key from emulator memory
+               memcpy(diversified_key, emulator+(8*3),8);
+
+               //Card challenge, a.k.a e-purse is on block 2
+               memcpy(card_challenge_data,emulator + (8 * 2) , 8);
+               //Precalculate the cipher state, feeding it the CC
+               cipher_state = opt_doTagMAC_1(card_challenge_data,diversified_key);
+
+       }

 
        int exitLoop = 0;
        // Reader 0a
 
        int exitLoop = 0;
        // Reader 0a


@@ -1063,34 +1101,31 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
        // Tag    CSN
 
        uint8_t *modulated_response;
        // Tag    CSN
 
        uint8_t *modulated_response;

-       int modulated_response_size;
+       int modulated_response_size = 0;

        uint8_t* trace_data = NULL;
        int trace_data_size = 0;
        uint8_t* trace_data = NULL;
        int trace_data_size = 0;

-       //uint8_t sof = 0x0f;

 
 

-       // free eventually allocated BigBuf memory
-       BigBuf_free();
+

        // Respond SOF -- takes 1 bytes
        // Respond SOF -- takes 1 bytes

-       uint8_t *resp1 = BigBuf_malloc(2);
-       int resp1Len;
+       uint8_t *resp_sof = BigBuf_malloc(2);
+       int resp_sof_Len;

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

-       uint8_t *resp2 = BigBuf_malloc(28);
-       int resp2Len;
+       uint8_t *resp_anticoll = BigBuf_malloc(28);
+       int resp_anticoll_len;

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

-       uint8_t *resp3 = BigBuf_malloc(30);
-       int resp3Len;
+       uint8_t *resp_csn = BigBuf_malloc(30);
+       int resp_csn_len;

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

-       uint8_t *resp4 = BigBuf_malloc(20);
-       int resp4Len;
+       uint8_t *resp_cc = BigBuf_malloc(20);
+       int resp_cc_len;

 
        uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
 
        uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);

-       memset(receivedCmd, 0x44, MAX_FRAME_SIZE);

        int len;
 
        // Prepare card messages
        int len;
 
        // Prepare card messages


@@ -1098,20 +1133,26 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
 
        // First card answer: SOF
        CodeIClassTagSOF();
 
        // First card answer: SOF
        CodeIClassTagSOF();

-       memcpy(resp1, ToSend, ToSendMax); resp1Len = ToSendMax;
+       memcpy(resp_sof, ToSend, ToSendMax); resp_sof_Len = ToSendMax;

 
        // Anticollision CSN
 
        // Anticollision CSN

-       CodeIClassTagAnswer(response2, sizeof(response2));
-       memcpy(resp2, ToSend, ToSendMax); resp2Len = ToSendMax;
+       CodeIClassTagAnswer(anticoll_data, sizeof(anticoll_data));
+       memcpy(resp_anticoll, ToSend, ToSendMax); resp_anticoll_len = ToSendMax;

 
        // CSN
 
        // CSN

-       CodeIClassTagAnswer(response3, sizeof(response3));
-       memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;
+       CodeIClassTagAnswer(csn_data, sizeof(csn_data));
+       memcpy(resp_csn, ToSend, ToSendMax); resp_csn_len = ToSendMax;

 
        // e-Purse
 
        // e-Purse

-       CodeIClassTagAnswer(response4, sizeof(response4));
-       memcpy(resp4, ToSend, ToSendMax); resp4Len = ToSendMax;
+       CodeIClassTagAnswer(card_challenge_data, sizeof(card_challenge_data));
+       memcpy(resp_cc, ToSend, ToSendMax); resp_cc_len = ToSendMax;

 
 

+       //This is used for responding to READ-block commands or other data which is dynamically generated
+       //First the 'trace'-data, not encoded for FPGA
+       uint8_t *data_generic_trace = BigBuf_malloc(8 + 2);//8 bytes data + 2byte CRC is max tag answer
+       //Then storage for the modulated data
+       //Each bit is doubled when modulated for FPGA, and we also have SOF and EOF (2 bytes)
+       uint8_t *data_response = BigBuf_malloc( (8+2) * 2 + 2);

 
        // Start from off (no field generated)
        //FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
 
        // Start from off (no field generated)
        //FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);


@@ -1131,9 +1172,9 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
 
        LED_A_ON();
        bool buttonPressed = false;
 
        LED_A_ON();
        bool buttonPressed = false;

-
+       uint8_t response_delay = 1;

        while(!exitLoop) {
        while(!exitLoop) {

-
+               response_delay = 1;

                LED_B_OFF();
                //Signal tracer
                // Can be used to get a trigger for an oscilloscope..
                LED_B_OFF();
                //Signal tracer
                // Can be used to get a trigger for an oscilloscope..


@@ -1148,57 +1189,110 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
                LED_C_ON();
 
                // Okay, look at the command now.
                LED_C_ON();
 
                // Okay, look at the command now.

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

                        // Reader in anticollission phase
                        // Reader in anticollission phase

-                       modulated_response = resp1; modulated_response_size = resp1Len; //order = 1;
-                       trace_data = response1;
-                       trace_data_size = sizeof(response1);
-               } else if(receivedCmd[0] == 0x0c) {
+                       modulated_response = resp_sof; modulated_response_size = resp_sof_Len; //order = 1;
+                       trace_data = sof_data;
+                       trace_data_size = sizeof(sof_data);
+               } else if(receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) {

                        // Reader asks for anticollission CSN
                        // Reader asks for anticollission CSN

-                       modulated_response = resp2; modulated_response_size = resp2Len; //order = 2;
-                       trace_data = response2;
-                       trace_data_size = sizeof(response2);
+                       modulated_response = resp_anticoll; modulated_response_size = resp_anticoll_len; //order = 2;
+                       trace_data = anticoll_data;
+                       trace_data_size = sizeof(anticoll_data);

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

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

                        // Reader selects anticollission CSN.
                        // Tag sends the corresponding real CSN
                        // Reader selects anticollission CSN.
                        // Tag sends the corresponding real CSN

-                       modulated_response = resp3; modulated_response_size = resp3Len; //order = 3;
-                       trace_data = response3;
-                       trace_data_size = sizeof(response3);
+                       modulated_response = resp_csn; modulated_response_size = resp_csn_len; //order = 3;
+                       trace_data = csn_data;
+                       trace_data_size = sizeof(csn_data);

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

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

                        // Read e-purse (88 02)
                        // Read e-purse (88 02)

-                       modulated_response = resp4; modulated_response_size = resp4Len; //order = 4;
-                       trace_data = response4;
-                       trace_data_size = sizeof(response4);
+                       modulated_response = resp_cc; modulated_response_size = resp_cc_len; //order = 4;
+                       trace_data = card_challenge_data;
+                       trace_data_size = sizeof(card_challenge_data);

                        LED_B_ON();
                        LED_B_ON();

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

                        // Reader random and reader MAC!!!
                        // Reader random and reader MAC!!!

-                       // Do not respond
-            // We do not know what to answer, so lets keep quiet
-                       modulated_response = resp1; modulated_response_size = 0; //order = 5;
-                       trace_data = NULL;
-                       trace_data_size = 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);
+                       if(simulationMode == MODE_FULLSIM)
+                       {
+                               //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;
+                               CodeIClassTagAnswer(trace_data , trace_data_size);
+                               memcpy(data_response, ToSend, ToSendMax);
+                               modulated_response = data_response;
+                               modulated_response_size = ToSendMax;
+                               response_delay = 0;//We need to hurry here...
+                               //exitLoop = true;
+                       }else
+                       {       //Not fullsim, we don't respond
+                               // We do not know what to answer, so lets keep quiet
+                               modulated_response = resp_sof; modulated_response_size = 0;
+                               trace_data = NULL;
+                               trace_data_size = 0;
+                               if (simulationMode == MODE_EXIT_AFTER_MAC){
+                                       // 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;

                                }
                                }

-                               exitLoop = true;

                        }
                        }

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

                        // Reader ends the session
                        // Reader ends the session

-                       modulated_response = resp1; modulated_response_size = 0; //order = 0;
+                       modulated_response = resp_sof; modulated_response_size = 0; //order = 0;

                        trace_data = NULL;
                        trace_data_size = 0;
                        trace_data = NULL;
                        trace_data_size = 0;

-               } else {
+               } else if(simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){
+                       //Read block
+                       uint16_t blk = receivedCmd[1];
+                       //Take the data...
+                       memcpy(data_generic_trace, emulator+(blk << 3),8);
+                       //Add crc
+                       AppendCrc(data_generic_trace, 8);
+                       trace_data = data_generic_trace;
+                       trace_data_size = 10;
+                       CodeIClassTagAnswer(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 && simulationMode == MODE_FULLSIM)
+               {//Probably the reader wants to update the nonce. Let's just ignore that for now.
+                       // OBS! If this is implemented, don't forget to regenerate the cipher_state
+                       //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|
+
+                       //Take the data...
+                       memcpy(data_generic_trace, receivedCmd+2,8);
+                       //Add crc
+                       AppendCrc(data_generic_trace, 8);
+                       trace_data = data_generic_trace;
+                       trace_data_size = 10;
+                       CodeIClassTagAnswer(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)
+               {//Pagesel
+                       //Pagesel enables to select a page in the selected chip memory and return its configuration block
+                       //Chips with a single page will not answer to this command
+                       // It appears we're fine ignoring this.
+                       //Otherwise, we should answer 8bytes (block) + 2bytes CRC
+               }
+               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",
                        //#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",


@@ -1207,7 +1301,7 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
                        receivedCmd[3], receivedCmd[4], receivedCmd[5],
                        receivedCmd[6], receivedCmd[7], receivedCmd[8]);
                        // Do not respond
                        receivedCmd[3], receivedCmd[4], receivedCmd[5],
                        receivedCmd[6], receivedCmd[7], receivedCmd[8]);
                        // Do not respond

-                       modulated_response = resp1; modulated_response_size = 0; //order = 0;
+                       modulated_response = resp_sof; modulated_response_size = 0; //order = 0;

                        trace_data = NULL;
                        trace_data_size = 0;
                }
                        trace_data = NULL;
                        trace_data_size = 0;
                }


@@ -1223,7 +1317,7 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
                A legit tag has about 380us delay between reader EOT and tag SOF.
                **/
                if(modulated_response_size > 0) {
                A legit tag has about 380us delay between reader EOT and tag SOF.
                **/
                if(modulated_response_size > 0) {

-                       SendIClassAnswer(modulated_response, modulated_response_size, 1);
+                       SendIClassAnswer(modulated_response, modulated_response_size, response_delay);

                        t2r_time = GetCountSspClk();
                }
 
                        t2r_time = GetCountSspClk();
                }
 


@@ -1242,7 +1336,6 @@ int doIClassSimulation(uint8_t csn[], int breakAfterMacReceived, uint8_t *reader
                        }
 
                }
                        }
 
                }

-               memset(receivedCmd, 0x44, MAX_FRAME_SIZE);

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


@@ -1355,7 +1448,7 @@ static void TransmitIClassCommand(const uint8_t *cmd, int len, int *samples, int
     }
     WDT_HIT();
   }
     }
     WDT_HIT();
   }

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

 }
 
 
 }
 
 


@@ -1381,7 +1474,7 @@ void CodeIClassCommand(const uint8_t * cmd, int len)
     for(j = 0; j < 4; j++) {
       for(k = 0; k < 4; k++) {
                        if(k == (b & 3)) {
     for(j = 0; j < 4; j++) {
       for(k = 0; k < 4; k++) {
                        if(k == (b & 3)) {

-                               ToSend[++ToSendMax] = 0x0f;
+                               ToSend[++ToSendMax] = 0xf0;

                        }
                        else {
                                ToSend[++ToSendMax] = 0x00;
                        }
                        else {
                                ToSend[++ToSendMax] = 0x00;


@@ -1488,8 +1581,8 @@ void setupIclassReader()
 {
     FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
     // Reset trace buffer
 {
     FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
     // Reset trace buffer

-    iso14a_set_tracing(TRUE);
-    iso14a_clear_trace();
+         set_tracing(TRUE);
+         clear_trace();

 
     // Setup SSC
     FpgaSetupSsc();
 
     // Setup SSC
     FpgaSetupSsc();


@@ -1509,16 +1602,16 @@ void setupIclassReader()
 
 }
 
 
 }
 

-size_t sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
+bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)

 {
        while(retries-- > 0)
        {
                ReaderTransmitIClass(command, cmdsize);
                if(expected_size == ReaderReceiveIClass(resp)){
 {
        while(retries-- > 0)
        {
                ReaderTransmitIClass(command, cmdsize);
                if(expected_size == ReaderReceiveIClass(resp)){

-                       return 0;
+                       return true;

                }
        }
                }
        }

-       return 1;//Error
+       return false;//Error

 }
 
 /**
 }
 
 /**


@@ -1528,12 +1621,18 @@ size_t sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t*
  *         1 = Got CSN
  *         2 = Got CSN and CC
  */
  *         1 = Got CSN
  *         2 = Got CSN and CC
  */

-uint8_t handshakeIclassTag(uint8_t *card_data)
+uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key)

 {
        static uint8_t act_all[]     = { 0x0a };
 {
        static uint8_t act_all[]     = { 0x0a };

-       static uint8_t identify[]    = { 0x0c };
+       //static uint8_t identify[]    = { 0x0c };
+       static uint8_t identify[]    = { 0x0c, 0x00, 0x73, 0x33 };

        static uint8_t select[]      = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
        static uint8_t readcheck_cc[]= { 0x88, 0x02 };
        static uint8_t select[]      = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
        static uint8_t readcheck_cc[]= { 0x88, 0x02 };

+       if (use_credit_key)
+               readcheck_cc[0] = 0x18;
+       else
+               readcheck_cc[0] = 0x88;
+

        uint8_t resp[ICLASS_BUFFER_SIZE];
 
        uint8_t read_status = 0;
        uint8_t resp[ICLASS_BUFFER_SIZE];
 
        uint8_t read_status = 0;


@@ -1563,68 +1662,132 @@ uint8_t handshakeIclassTag(uint8_t *card_data)
        //Flag that we got to at least stage 1, read CSN
        read_status = 1;
 
        //Flag that we got to at least stage 1, read CSN
        read_status = 1;
 

-       // Card selected, now read e-purse (cc)
+       // Card selected, now read e-purse (cc) (only 8 bytes no CRC)

        ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
        if(ReaderReceiveIClass(resp) == 8) {
                //Save CC (e-purse) in response data
                memcpy(card_data+8,resp,8);
        ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
        if(ReaderReceiveIClass(resp) == 8) {
                //Save CC (e-purse) in response data
                memcpy(card_data+8,resp,8);

-
-               //Got both
-               read_status = 2;
+               read_status++;

        }
 
        return read_status;
 }
        }
 
        return read_status;
 }

+uint8_t handshakeIclassTag(uint8_t *card_data) {
+       return handshakeIclassTag_ext(card_data, false);
+}
+

 
 // Reader iClass Anticollission
 void ReaderIClass(uint8_t arg0) {
 
 
 // Reader iClass Anticollission
 void ReaderIClass(uint8_t arg0) {
 

-    uint8_t card_data[24]={0};
-    uint8_t last_csn[8]={0};
-       
-    int read_status= 0;
-    bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
-       bool get_cc = arg0 & FLAG_ICLASS_READER_GET_CC;
-
-    setupIclassReader();
-
-    size_t datasize = 0;
-    while(!BUTTON_PRESS())
-    {
-
-               if(traceLen > BigBuf_max_traceLen()) {
+       uint8_t card_data[6 * 8]={0};
+       memset(card_data, 0xFF, sizeof(card_data));
+       uint8_t last_csn[8]={0,0,0,0,0,0,0,0};
+       uint8_t resp[ICLASS_BUFFER_SIZE];
+       memset(resp, 0xFF, sizeof(resp));
+       //Read conf block CRC(0x01) => 0xfa 0x22
+       uint8_t readConf[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x01, 0xfa, 0x22};
+       //Read App Issuer Area block CRC(0x05) => 0xde  0x64
+       uint8_t readAA[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x05, 0xde, 0x64};
+
+       int read_status= 0;
+       uint8_t result_status = 0;
+       // flag to read until one tag is found successfully
+       bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
+       // flag to only try 5 times to find one tag then return
+       bool try_once = arg0 & FLAG_ICLASS_READER_ONE_TRY;
+       // if neither abort_after_read nor try_once then continue reading until button pressed.
+
+       bool use_credit_key = arg0 & FLAG_ICLASS_READER_CEDITKEY;
+       // test flags for what blocks to be sure to read
+       uint8_t flagReadConfig = arg0 & FLAG_ICLASS_READER_CONF;
+       uint8_t flagReadCC = arg0 & FLAG_ICLASS_READER_CC;
+       uint8_t flagReadAA = arg0 & FLAG_ICLASS_READER_AA;
+
+       set_tracing(true);
+       setupIclassReader();
+
+       uint16_t tryCnt=0;
+       bool userCancelled = BUTTON_PRESS() || usb_poll_validate_length();
+       while(!userCancelled)
+       {
+               // if only looking for one card try 2 times if we missed it the first time
+               if (try_once && tryCnt > 2) break; 
+               tryCnt++;
+               if(!tracing) {

                        DbpString("Trace full");
                        break;
                }
                WDT_HIT();
 
                        DbpString("Trace full");
                        break;
                }
                WDT_HIT();
 

-               read_status = handshakeIclassTag(card_data);
+               read_status = handshakeIclassTag_ext(card_data, use_credit_key);

 
                if(read_status == 0) continue;
 
                if(read_status == 0) continue;

-               if(read_status == 1) datasize = 8;
-               if(read_status == 2) datasize = 16;
+               if(read_status == 1) result_status = FLAG_ICLASS_READER_CSN;
+               if(read_status == 2) result_status = FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CC;
+
+               // handshakeIclass returns CSN|CC, but the actual block
+               // layout is CSN|CONFIG|CC, so here we reorder the data,
+               // moving CC forward 8 bytes
+               memcpy(card_data+16,card_data+8, 8);
+               //Read block 1, config
+               if(flagReadConfig) {
+                       if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, 10, 10))
+                       {
+                               result_status |= FLAG_ICLASS_READER_CONF;
+                               memcpy(card_data+8, resp, 8);
+                       } else {
+                               Dbprintf("Failed to dump config block");
+                       }
+               }
+
+               //Read block 5, AA
+               if(flagReadAA) {
+                       if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA), resp, 10, 10))
+                       {
+                               result_status |= FLAG_ICLASS_READER_AA;
+                               memcpy(card_data+(8*5), resp, 8);
+                       } else {
+                               //Dbprintf("Failed to dump AA block");
+                       }
+               }
+
+               // 0 : CSN
+               // 1 : Configuration
+               // 2 : e-purse
+               // (3,4 write-only, kc and kd)
+               // 5 Application issuer area
+               //
+               //Then we can 'ship' back the 8 * 6 bytes of data,
+               // with 0xFF:s in block 3 and 4.

 
                LED_B_ON();
 
                LED_B_ON();

-               //Send back to client, but don't bother if we already sent this
+               //Send back to client, but don't bother if we already sent this - 
+               //  only useful if looping in arm (not try_once && not abort_after_read)

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

-
-                       if(!get_cc || (get_cc && read_status == 2))
-                       {
-                               cmd_send(CMD_ACK,read_status,0,0,card_data,datasize);
+                       // If caller requires that we get Conf, CC, AA, continue until we got it
+                       if( (result_status ^ FLAG_ICLASS_READER_CSN ^ flagReadConfig ^ flagReadCC ^ flagReadAA) == 0) {
+                               cmd_send(CMD_ACK,result_status,0,0,card_data,sizeof(card_data));

                                if(abort_after_read) {
                                        LED_A_OFF();
                                if(abort_after_read) {
                                        LED_A_OFF();

+                                       LED_B_OFF();

                                        return;
                                }
                                //Save that we already sent this....
                                memcpy(last_csn, card_data, 8);
                        }
                                        return;
                                }
                                //Save that we already sent this....
                                memcpy(last_csn, card_data, 8);
                        }

-                       //If 'get_cc' was specified and we didn't get a CC, we'll just keep trying...
+

                }
                LED_B_OFF();
                }
                LED_B_OFF();

-    }
-    cmd_send(CMD_ACK,0,0,0,card_data, 0);
-    LED_A_OFF();
+               userCancelled = BUTTON_PRESS() || usb_poll_validate_length();
+       }
+       if (userCancelled) {
+               cmd_send(CMD_ACK,0xFF,0,0,card_data, 0);
+       } else {
+               cmd_send(CMD_ACK,0,0,0,card_data, 0);
+       }
+       LED_A_OFF();

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


@@ -1658,13 +1821,13 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
        uint8_t resp[ICLASS_BUFFER_SIZE];
        
     setupIclassReader();
        uint8_t resp[ICLASS_BUFFER_SIZE];
        
     setupIclassReader();

-
+       set_tracing(TRUE);

 
        while(!BUTTON_PRESS()) {
        
                WDT_HIT();
 
 
        while(!BUTTON_PRESS()) {
        
                WDT_HIT();
 

-               if(traceLen > BigBuf_max_traceLen()) {
+               if(!tracing) {

                        DbpString("Trace full");
                        break;
                }
                        DbpString("Trace full");
                        break;
                }


@@ -1675,7 +1838,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
                //for now replay captured auth (as cc not updated)
                memcpy(check+5,MAC,4);
 
                //for now replay captured auth (as cc not updated)
                memcpy(check+5,MAC,4);
 

-               if(sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
+               if(!sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))

                {
                        Dbprintf("Error: Authentication Fail!");
                        continue;
                {
                        Dbprintf("Error: Authentication Fail!");
                        continue;


@@ -1687,7 +1850,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
                read[2] = crc >> 8;
                read[3] = crc & 0xff;
 
                read[2] = crc >> 8;
                read[3] = crc & 0xff;
 

-               if(sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
+               if(!sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))

                {
                        Dbprintf("Dump config (block 1) failed");
                        continue;
                {
                        Dbprintf("Dump config (block 1) failed");
                        continue;


@@ -1705,7 +1868,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
                //Set card_data to all zeroes, we'll fill it with data
                memset(card_data,0x0,USB_CMD_DATA_SIZE);
                uint8_t failedRead =0;
                //Set card_data to all zeroes, we'll fill it with data
                memset(card_data,0x0,USB_CMD_DATA_SIZE);
                uint8_t failedRead =0;

-               uint8_t stored_data_length =0;
+               uint32_t stored_data_length =0;

                //then loop around remaining blocks
                for(int block=0; block < cardsize; block++){
 
                //then loop around remaining blocks
                for(int block=0; block < cardsize; block++){
 


@@ -1714,7 +1877,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
                        read[2] = crc >> 8;
                        read[3] = crc & 0xff;
 
                        read[2] = crc >> 8;
                        read[3] = crc & 0xff;
 

-                       if(!sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
+                       if(sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))

                        {
                                Dbprintf("     %02x: %02x %02x %02x %02x %02x %02x %02x %02x",
                                                 block, resp[0], resp[1], resp[2],
                        {
                                Dbprintf("     %02x: %02x %02x %02x %02x %02x %02x %02x %02x",
                                                 block, resp[0], resp[1], resp[2],


@@ -1724,7 +1887,6 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
                                //Fill up the buffer
                                memcpy(card_data+stored_data_length,resp,8);
                                stored_data_length += 8;
                                //Fill up the buffer
                                memcpy(card_data+stored_data_length,resp,8);
                                stored_data_length += 8;

-

                                if(stored_data_length +8 > USB_CMD_DATA_SIZE)
                                {//Time to send this off and start afresh
                                        cmd_send(CMD_ACK,
                                if(stored_data_length +8 > USB_CMD_DATA_SIZE)
                                {//Time to send this off and start afresh
                                        cmd_send(CMD_ACK,


@@ -1743,6 +1905,7 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
                                Dbprintf("Failed to dump block %d", block);
                        }
                }
                                Dbprintf("Failed to dump block %d", block);
                        }
                }

+

                //Send off any remaining data
                if(stored_data_length > 0)
                {
                //Send off any remaining data
                if(stored_data_length > 0)
                {


@@ -1765,130 +1928,137 @@ void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
        LED_A_OFF();
 }
 
        LED_A_OFF();
 }
 

-//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);
-
-       // Reset trace buffer
-    memset(trace, 0x44, RECV_CMD_OFFSET);
-       traceLen = 0;
+void iClass_ReadCheck(uint8_t  blockNo, uint8_t keyType) {
+       uint8_t readcheck[] = { keyType, blockNo };
+       uint8_t resp[] = {0,0,0,0,0,0,0,0};
+       size_t isOK = 0;
+       isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 6);
+       cmd_send(CMD_ACK,isOK,0,0,0,0);
+}

 
 

-       // 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);
+void iClass_Authentication(uint8_t *MAC) {
+       uint8_t check[] = { ICLASS_CMD_CHECK, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+       uint8_t resp[ICLASS_BUFFER_SIZE];
+       memcpy(check+5,MAC,4);
+       bool isOK;
+       isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, 4, 6);
+       cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
+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?
+       char bl = blockNo;
+       uint16_t rdCrc = iclass_crc16(&bl, 1);
+       readcmd[2] = rdCrc >> 8;
+       readcmd[3] = rdCrc & 0xff;
+       uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+       bool isOK = false;
+
+       //readcmd[1] = blockNo;
+       isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, 10, 10);
+       memcpy(readdata, resp, sizeof(resp));
+
+       return isOK;
+}

 
 

-       SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+void iClass_ReadBlk(uint8_t blockno) {
+       uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+       bool isOK = false;
+       isOK = iClass_ReadBlock(blockno, readblockdata);
+       cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8);
+}

 
 

-       // 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_Dump(uint8_t blockno, uint8_t numblks) {
+       uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+       bool isOK = false;
+       uint8_t blkCnt = 0;

 
 

-       LED_A_ON();
+       BigBuf_free();
+       uint8_t *dataout = BigBuf_malloc(255*8);
+       if (dataout == NULL){
+               Dbprintf("out of memory");
+               OnError(1);
+               return;
+       }
+       memset(dataout,0xFF,255*8);
+
+       for (;blkCnt < numblks; blkCnt++) {
+               isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+               if (!isOK || (readblockdata[0] == 0xBB || readblockdata[7] == 0xBB || readblockdata[2] == 0xBB)) { //try again
+                       isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+                       if (!isOK) {
+                               Dbprintf("Block %02X failed to read", blkCnt+blockno);
+                               break;
+                       }
+               }
+               memcpy(dataout+(blkCnt*8),readblockdata,8);
+       }
+       //return pointer to dump memory in arg3
+       cmd_send(CMD_ACK,isOK,blkCnt,BigBuf_max_traceLen(),0,0);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+       LEDsoff();
+       BigBuf_free();
+}

 
 

-       for(int i=0;i<1;i++) {
-       
-               if(traceLen > TRACE_SIZE) {
-                       DbpString("Trace full");
-                       break;
+bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) {
+       uint8_t write[] = { ICLASS_CMD_UPDATE, blockNo, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+       //uint8_t readblockdata[10];
+       //write[1] = blockNo;
+       memcpy(write+2, data, 12); // data + mac
+       char *wrCmd = (char *)(write+1); 
+       uint16_t wrCrc = iclass_crc16(wrCmd, 13);
+       write[14] = wrCrc >> 8;
+       write[15] = wrCrc & 0xff;
+       uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+       bool isOK = false;
+
+       isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+       if (isOK) { //if reader responded correctly
+               //Dbprintf("WriteResp: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",resp[0],resp[1],resp[2],resp[3],resp[4],resp[5],resp[6],resp[7],resp[8],resp[9]);
+               if (memcmp(write+2,resp,8)) {  //if response is not equal to write values
+                       if (blockNo != 3 && blockNo != 4) { //if not programming key areas (note key blocks don't get programmed with actual key data it is xor data)
+                               //error try again
+                               isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+                       } 
+                       

                }
                }

-               
-               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;
-                               }
-                       }//
+       }
+       return isOK;
+}
+
+void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) {
+       bool isOK = iClass_WriteBlock_ext(blockNo, data);
+       if (isOK){
+               Dbprintf("Write block [%02x] successful",blockNo);
+       } else {
+               Dbprintf("Write block [%02x] failed",blockNo);          
+       }
+       cmd_send(CMD_ACK,isOK,0,0,0,0); 
+}
+
+void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {
+       int i;
+       int written = 0;
+       int total_block = (endblock - startblock) + 1;
+       for (i = 0; i < total_block;i++){
+               // block number
+               if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+                       Dbprintf("Write block [%02x] successful",i + startblock);
+                       written++;
+               } else {
+                       if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+                               Dbprintf("Write block [%02x] successful",i + startblock);
+                               written++;
+                       } else {
+                               Dbprintf("Write block [%02x] failed",i + startblock);
+                       }

                }
                }

-               WDT_HIT();

        }
        }

-       
-       LED_A_OFF();
-}*/
+       if (written == total_block)
+               Dbprintf("Clone complete");
+       else
+               Dbprintf("Clone incomplete");   
+
+       cmd_send(CMD_ACK,1,0,0,0,0);
+       FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+       LEDsoff();
+}