iClass support is tweaked so it works with HID readers... waiting for further improvement

diff --git a/armsrc/iclass.c b/armsrc/iclass.c
index 37006e5126dd8f288f5ed1c95e757d8810fc5793..e4b1a48854d68cc083cd381e294748f6d8b2db0b 100644 (file)
--- a/armsrc/iclass.c
+++ b/armsrc/iclass.c
@@ -885,20 +885,10 @@ done:
     LED_D_OFF();
 }
 
     LED_D_OFF();
 }
 

-
-void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN, int direction) {
-       int i;
-       int j = 0;
-       
-       if(direction == 0) {
-               for(i = 0; i < 8; i++) {
-                       rotatedCSN[i] = (originalCSN[i] >> 3) | (originalCSN[(i+1)%8] << 5);
-               }
-       } else {
-               for(i = 0; i < 8; i++) {
-                       if(i == 0) { j = 7; } else { j = i - 1; }
-                       originalCSN[i] = (rotatedCSN[i] << 3) | (rotatedCSN[j] >> 5);
-               }
+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);

        }
 }
 
        }
 }
 


@@ -909,7 +899,7 @@ void rotateCSN(uint8_t* originalCSN, uint8_t* rotatedCSN, int direction) {
 //-----------------------------------------------------------------------------
 static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen)
 {
 //-----------------------------------------------------------------------------
 static int GetIClassCommandFromReader(uint8_t *received, int *len, int maxLen)
 {

-    // Set FPGA mode to "simulated ISO 14443A tag", no modulation (listen
+    // 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();
     // only, since we are receiving, not transmitting).
     // Signal field is off with the appropriate LED
     LED_D_OFF();


@@ -1019,38 +1009,14 @@ static void CodeIClassTagSOF()
 //-----------------------------------------------------------------------------
 void SimulateIClass(uint8_t arg0, uint8_t *datain)
 {
 //-----------------------------------------------------------------------------
 void SimulateIClass(uint8_t arg0, uint8_t *datain)
 {

-       // DEFINED ABOVE
-       // #define RECV_CMD_OFFSET   3032
-       // #define RECV_RES_OFFSET   3096
-       // #define DMA_BUFFER_OFFSET 3160
-       // #define DMA_BUFFER_SIZE   4096
-       // #define TRACE_LENGTH      3000

        uint8_t simType = arg0;
        uint8_t simType = arg0;

-       int SMALL_BUFFER_OFFSET = 2000;
-       bool fullbuffer = FALSE;
-       uint32_t parityBits = 0;
-       
-       iso14a_set_tracing(TRUE);
-       iso14a_clear_tracelen();
-       iso14a_set_trigger(FALSE);
-
-       // PREPARE PROTOCOL MESSAGES FIRST
-       
-       // Pointers to tag answers that should be stored in the buffer
-       uint8_t *response;
-       int responselength;

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

-       uint8_t response1[] = { 0x0f }; // Tag SOF

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

-       uint8_t response3[] = { 0x00, 0x0B, 0x0F, 0xFF, 0xF7, 0xFF, 0x12, 0xE0, 0x00, 0x00 };
-       int response1length = 1;
-       int response2length = 10;
-       int response3length = 10;
+       uint8_t response3[] = { 0x03, 0x1f, 0xec, 0x8a, 0xf7, 0xff, 0x12, 0xe0, 0x00, 0x00 };

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

-       int response4length = 8;

 
        if(simType == 0) {
                // Use the CSN from commandline
 
        if(simType == 0) {
                // Use the CSN from commandline


@@ -1058,7 +1024,7 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
        }
 
        // Construct anticollision-CSN
        }
 
        // Construct anticollision-CSN

-       rotateCSN(response3,response2,0);
+       rotateCSN(response3,response2);

 
        // Compute CRC on both CSNs
        ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);
 
        // Compute CRC on both CSNs
        ComputeCrc14443(CRC_ICLASS, response2, 8, &response2[8], &response2[9]);


@@ -1075,33 +1041,29 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
         int respLen;
 
        // Respond SOF -- takes 8 bytes
         int respLen;
 
        // Respond SOF -- takes 8 bytes

-       uint8_t *resp1 = (((uint8_t *)BigBuf));
+       uint8_t *resp1 = (((uint8_t *)BigBuf) + 800);

        int resp1Len;
 
        // Anticollision CSN (rotated CSN)
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)
        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) + 10 + SMALL_BUFFER_OFFSET);
+       uint8_t *resp2 = (((uint8_t *)BigBuf) + 810);

        int resp2Len;
 
        // CSN
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)
        int resp2Len;
 
        // CSN
        // 176: Takes 16 bytes for SOF/EOF and 10 * 16 = 160 bytes (2 bytes/bit)

-       uint8_t *resp3 = (((uint8_t *)BigBuf) + 190 + SMALL_BUFFER_OFFSET);
-       //int resp3Len; // NOT USED
+       uint8_t *resp3 = (((uint8_t *)BigBuf) + 990);
+       int resp3Len;

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

-       uint8_t *resp4 = (((uint8_t *)BigBuf) + 270 + SMALL_BUFFER_OFFSET);
+       uint8_t *resp4 = (((uint8_t *)BigBuf) + 1170);

        int resp4Len;
 
        // + 1720..
        int resp4Len;
 
        // + 1720..

-       //uint8_t *receivedCmd = (uint8_t *)BigBuf;
-        uint8_t *receivedCmd = (((uint8_t *)BigBuf) + RECV_CMD_OFFSET);
-       memset(receivedCmd, 0x44, 64);
+       uint8_t *receivedCmd = (uint8_t *)BigBuf;
+       memset(receivedCmd, 0x44, 400);

        int len;
 
        int len;
 

-       // Reset trace buffer
-        memset(trace, 0x44, RECV_CMD_OFFSET);
-

        // Prepare card messages
        ToSendMax = 0;
 
        // Prepare card messages
        ToSendMax = 0;
 


@@ -1115,7 +1077,7 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
 
        // CSN
        CodeIClassTagAnswer(response3, sizeof(response3));
 
        // CSN
        CodeIClassTagAnswer(response3, sizeof(response3));

-       memcpy(resp3, ToSend, ToSendMax); //resp3Len = ToSendMax; // NOT USED
+       memcpy(resp3, ToSend, ToSendMax); resp3Len = ToSendMax;

 
        // e-Purse
        CodeIClassTagAnswer(response4, sizeof(response4));
 
        // e-Purse
        CodeIClassTagAnswer(response4, sizeof(response4));


@@ -1126,11 +1088,8 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
        FpgaSetupSsc();
 
        // To control where we are in the protocol
        FpgaSetupSsc();
 
        // To control where we are in the protocol

-       //int order = 0;
-       // int lastorder; // NOT USED

        int cmdsRecvd = 0;
        int cmdsRecvd = 0;

-       resp = resp1; respLen = 0;
-       response = response1; responselength = response1length;
+

        LED_A_ON();
        for(;;) {
                LED_B_OFF();
        LED_A_ON();
        for(;;) {
                LED_B_OFF();


@@ -1140,33 +1099,28 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                        }
 
                // Okay, look at the command now.
                        }
 
                // Okay, look at the command now.

-               //lastorder = order; // NOT USED

                if(receivedCmd[0] == 0x0a) {
                        // Reader in anticollission phase
                        resp = resp1; respLen = resp1Len; //order = 1;
                if(receivedCmd[0] == 0x0a) {
                        // Reader in anticollission phase
                        resp = resp1; respLen = resp1Len; //order = 1;

-                       response = response1; responselength = response1length;

                        //resp = resp2; respLen = resp2Len; order = 2;
                        //DbpString("Hello request from reader:");
                } else if(receivedCmd[0] == 0x0c) {
                        // Reader asks for anticollission CSN
                        resp = resp2; respLen = resp2Len; //order = 2;
                        //resp = resp2; respLen = resp2Len; order = 2;
                        //DbpString("Hello request from reader:");
                } else if(receivedCmd[0] == 0x0c) {
                        // Reader asks for anticollission CSN
                        resp = resp2; respLen = resp2Len; //order = 2;

-                       response = response2; responselength = response2length;

                        //DbpString("Reader requests anticollission CSN:");
                } else if(receivedCmd[0] == 0x81) {
                        // Reader selects anticollission CSN.
                        // Tag sends the corresponding real CSN
                        //DbpString("Reader requests anticollission CSN:");
                } else if(receivedCmd[0] == 0x81) {
                        // Reader selects anticollission CSN.
                        // Tag sends the corresponding real CSN

-                       resp = resp3; respLen = resp2Len; //order = 3;
-                       response = response3; responselength = response3length;
+                       resp = resp3; respLen = resp3Len; //order = 3;

                        //DbpString("Reader selects anticollission CSN:");
                } else if(receivedCmd[0] == 0x88) {
                        // Read e-purse (88 02)
                        resp = resp4; respLen = resp4Len; //order = 4;
                        //DbpString("Reader selects anticollission CSN:");
                } else if(receivedCmd[0] == 0x88) {
                        // Read e-purse (88 02)
                        resp = resp4; respLen = resp4Len; //order = 4;

-                       response = response4; responselength = response4length;

                        LED_B_ON();
                } else if(receivedCmd[0] == 0x05) {
                        // Reader random and reader MAC!!!
                        // Lets store this ;-)
                        LED_B_ON();
                } else if(receivedCmd[0] == 0x05) {
                        // Reader random and reader MAC!!!
                        // Lets store this ;-)

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

                        response3[0], response3[1], response3[2],
                        response3[3], response3[4], response3[5],
                        response3[6], response3[7]);
                        response3[0], response3[1], response3[2],
                        response3[3], response3[4], response3[5],
                        response3[6], response3[7]);


@@ -1182,6 +1136,11 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                } else if(receivedCmd[0] == 0x00 && len == 1) {
                        // Reader ends the session
                        resp = resp1; respLen = 0; //order = 0;
                } else if(receivedCmd[0] == 0x00 && len == 1) {
                        // Reader ends the session
                        resp = resp1; respLen = 0; //order = 0;

+/*             } else if(receivedCmd[0] == 0x50) {
+                       // Received a HALT
+                       resp = resp1; respLen = 0; order = 5; // Do nothing
+                       DbpString("Reader requested we HALT!:");
+*/

                } else {
                        // Never seen this command before
                        Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",
                } else {
                        // Never seen this command before
                        Dbprintf("Unknown command received from reader (len=%d): %x %x %x %x %x %x %x %x %x",


@@ -1191,9 +1150,10 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                        receivedCmd[6], receivedCmd[7], receivedCmd[8]);
                        // Do not respond
                        resp = resp1; respLen = 0; //order = 0;
                        receivedCmd[6], receivedCmd[7], receivedCmd[8]);
                        // Do not respond
                        resp = resp1; respLen = 0; //order = 0;

-                       response = response1; responselength = response1length;

                }
 
                }
 

+               memset(receivedCmd, 0x44, 32);
+

                if(cmdsRecvd > 999) {
                        DbpString("1000 commands later...");
                        break;
                if(cmdsRecvd > 999) {
                        DbpString("1000 commands later...");
                        break;


@@ -1205,24 +1165,9 @@ void SimulateIClass(uint8_t arg0, uint8_t *datain)
                if(respLen <= 0) continue;
 
                SendIClassAnswer(resp, respLen, 21);
                if(respLen <= 0) continue;
 
                SendIClassAnswer(resp, respLen, 21);

-
-               // Store commands and responses in buffer
-               // as long as there is room for it.
-               if(traceLen < (SMALL_BUFFER_OFFSET - 32)) {
-                       if(tracing) {
-                               LogTrace(receivedCmd,len,0,GetParity(receivedCmd,len),TRUE);
-                               parityBits = SwapBits(GetParity(response,responselength),responselength);
-                               LogTrace(response,responselength,0,parityBits,FALSE);
-                       }
-               } else if(!fullbuffer) {
-                       DbpString("Trace buffer is full now...");
-                       fullbuffer = TRUE;
-               }
-
-               memset(receivedCmd, 0x44, 32);

     }
 
     }
 

-       //Dbprintf("Commands received: %d", cmdsRecvd);
+       Dbprintf("%x", cmdsRecvd);

        LED_A_OFF();
        LED_B_OFF();
 }
        LED_A_OFF();
        LED_B_OFF();
 }


@@ -1231,6 +1176,9 @@ static int SendIClassAnswer(uint8_t *resp, int respLen, int delay)
 {
        int i = 0, u = 0, d = 0;
        uint8_t b = 0;
 {
        int i = 0, u = 0, d = 0;
        uint8_t b = 0;

+       // return 0;
+       // Modulate Manchester
+       // FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD424);

        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
        AT91C_BASE_SSC->SSC_THR = 0x00;
        FpgaSetupSsc();
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_TAGSIM_MOD);
        AT91C_BASE_SSC->SSC_THR = 0x00;
        FpgaSetupSsc();


@@ -1452,14 +1400,9 @@ int ReaderReceiveIClass(uint8_t* receivedAnswer)
 
 // Reader iClass Anticollission
 void ReaderIClass(uint8_t arg0) {
 
 // Reader iClass Anticollission
 void ReaderIClass(uint8_t arg0) {

-       int i = 0;
-       int length = 0;
-       bool csn_failure = FALSE;
-

        uint8_t act_all[]     = { 0x0a };
        uint8_t identify[]    = { 0x0c };
        uint8_t act_all[]     = { 0x0a };
        uint8_t identify[]    = { 0x0c };

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

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


@@ -1492,34 +1435,8 @@ void ReaderIClass(uint8_t arg0) {
                // Card present?
                if(ReaderReceiveIClass(resp)) {
                        ReaderTransmitIClass(identify, 1);
                // Card present?
                if(ReaderReceiveIClass(resp)) {
                        ReaderTransmitIClass(identify, 1);

-                       if((length = ReaderReceiveIClass(resp))) {
-                               if(length == 10) {
-                                       // Select card          
-                                       memcpy(&select[1],resp,8);
-                                       ReaderTransmitIClass(select, sizeof(select));
-       
-                                       if((length = ReaderReceiveIClass(resp))) {
-                                               if(length == 10) {
-                                                       rotateCSN(check_csn,&select[1],1);
-                                                       csn_failure = FALSE;
-                                                       for(i = 0; i < 8; i++) {
-                                                               if(check_csn[i] != resp[i]) {
-                                                                       csn_failure = TRUE;
-                                                                       break;
-                                                               }
-                                                       }
-                                                       
-                                                       if(!csn_failure) {
-                       Dbprintf("     Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
-                       check_csn[0], check_csn[1], check_csn[2],
-                       check_csn[3], check_csn[4], check_csn[5],
-                       check_csn[6], check_csn[7]);
-                                                       }
-                                                       // Card selected, whats next... ;-)
-                                                       
-                                               }
-                                       }
-                               }
+                       if(ReaderReceiveIClass(resp)) {
+                               //ReaderTransmitIClass(select, sizeof(select));

                        }
                }
                WDT_HIT();
                        }
                }
                WDT_HIT();


@@ -1527,5 +1444,58 @@ void ReaderIClass(uint8_t arg0) {
        
        LED_A_OFF();
 
        
        LED_A_OFF();
 

+/*     if(resp_data)
+               memcpy(resp_data->atqa, resp, 2);
+       
+       // OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in
+       // which case we need to make a cascade 2 request and select - this is a long UID
+       // While the UID is not complete, the 3nd bit (from the right) is set in the SAK.
+       for(; sak & 0x04; cascade_level++)
+       {
+               // SELECT_* (L1: 0x93, L2: 0x95, L3: 0x97)
+               sel_uid[0] = sel_all[0] = 0x93 + cascade_level * 2;
+
+               // SELECT_ALL
+               ReaderTransmit(sel_all,sizeof(sel_all));
+               if (!ReaderReceive(resp)) return 0;
+               if(uid_ptr) memcpy(uid_ptr + cascade_level*4, resp, 4);
+               
+               // calculate crypto UID
+               if(cuid_ptr) *cuid_ptr = bytes_to_num(resp, 4);
+
+               // Construct SELECT UID command
+               memcpy(sel_uid+2,resp,5);
+               AppendCrc14443a(sel_uid,7);
+               ReaderTransmit(sel_uid,sizeof(sel_uid));
+
+               // Receive the SAK
+               if (!ReaderReceive(resp)) return 0;
+               sak = resp[0];
+       }
+       if(resp_data) {
+               resp_data->sak = sak;
+               resp_data->ats_len = 0;
+       }
+       //--  this byte not UID, it CT.  http://www.nxp.com/documents/application_note/AN10927.pdf  page 3
+       if (uid_ptr[0] == 0x88) {  
+               memcpy(uid_ptr, uid_ptr + 1, 7);
+               uid_ptr[7] = 0;
+       }
+
+       if( (sak & 0x20) == 0)
+               return 2; // non iso14443a compliant tag
+
+       // Request for answer to select
+       if(resp_data) {  // JCOP cards - if reader sent RATS then there is no MIFARE session at all!!!
+               AppendCrc14443a(rats, 2);
+               ReaderTransmit(rats, sizeof(rats));
+               
+               if (!(len = ReaderReceive(resp))) return 0;
+               
+               memcpy(resp_data->ats, resp, sizeof(resp_data->ats));
+               resp_data->ats_len = len;
+       }
+*/     

 }
 
 }
 

+