//-------------------------------------------------------------------------------------
 static void TransmitFor14443a(const uint8_t *cmd, uint16_t len, uint32_t *timing)
 {
-       
        FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
 
        uint32_t ThisTransferTime = 0;
                if(AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_TXRDY)) {
                        AT91C_BASE_SSC->SSC_THR = cmd[c];
                        c++;
-                       if(c >= len) {
+                       if(c >= len)
                                break;
-                       }
                }
        }
        
 void CodeIso14443aBitsAsReaderPar(const uint8_t *cmd, uint16_t bits, const uint8_t *parity)
 {
        int i, j;
-       int last;
+       int last = 0;
        uint8_t b;
 
        ToSendReset();
        // Start of Communication (Seq. Z)
        ToSend[++ToSendMax] = SEC_Z;
        LastProxToAirDuration = 8 * (ToSendMax+1) - 6;
-       last = 0;
 
        size_t bytecount = nbytes(bits);
        // Generate send structure for the data bits
        Code4bitAnswerAsTag(resp);
        int res = EmSendCmd14443aRaw(ToSend, ToSendMax, correctionNeeded);
        // do the tracing for the previous reader request and this tag answer:
-       uint8_t par[1];
+       uint8_t par[1] = {0x00};
        GetParity(&resp, 1, par);
        EmLogTrace(Uart.output, 
                                Uart.len, 
 }
 
 int EmSendCmdEx(uint8_t *resp, uint16_t respLen, bool correctionNeeded){
-       uint8_t par[MAX_PARITY_SIZE];
+       uint8_t par[MAX_PARITY_SIZE] = {0x00};
        GetParity(resp, respLen, par);
        return EmSendCmdExPar(resp, respLen, correctionNeeded, par);
 }
 
 int EmSendCmd(uint8_t *resp, uint16_t respLen){
-       uint8_t par[MAX_PARITY_SIZE];
+       uint8_t par[MAX_PARITY_SIZE] = {0x00};
        GetParity(resp, respLen, par);
        return EmSendCmdExPar(resp, respLen, false, par);
 }
                uint16_t exact_fdt = (approx_fdt - 20 + 32)/64 * 64 + 20;
                reader_EndTime = tag_StartTime - exact_fdt;
                reader_StartTime = reader_EndTime - reader_modlen;
-               if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE)) {
+               
+               if (!LogTrace(reader_data, reader_len, reader_StartTime, reader_EndTime, reader_Parity, TRUE))
                        return FALSE;
-               } else return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE));
+               else 
+                       return(!LogTrace(tag_data, tag_len, tag_StartTime, tag_EndTime, tag_Parity, FALSE));
+               
        } else {
                return TRUE;
        }
                LED_A_ON();
   
        // Log reader command in trace buffer
-       if (tracing) {
+       if (tracing)
                LogTrace(frame, nbytes(bits), LastTimeProxToAirStart*16 + DELAY_ARM2AIR_AS_READER, (LastTimeProxToAirStart + LastProxToAirDuration)*16 + DELAY_ARM2AIR_AS_READER, par, TRUE);
-       }
 }
 
 void ReaderTransmitPar(uint8_t* frame, uint16_t len, uint8_t *par, uint32_t *timing)
 void ReaderTransmitBits(uint8_t* frame, uint16_t len, uint32_t *timing)
 {
   // Generate parity and redirect
-  uint8_t par[MAX_PARITY_SIZE];
+  uint8_t par[MAX_PARITY_SIZE] = {0x00};
   GetParity(frame, len/8, par);
   ReaderTransmitBitsPar(frame, len, par, timing);
 }
 void ReaderTransmit(uint8_t* frame, uint16_t len, uint32_t *timing)
 {
   // Generate parity and redirect
-  uint8_t par[MAX_PARITY_SIZE];
+  uint8_t par[MAX_PARITY_SIZE] = {0x00};
   GetParity(frame, len, par);
   ReaderTransmitBitsPar(frame, len*8, par, timing);
 }
 
 int ReaderReceiveOffset(uint8_t* receivedAnswer, uint16_t offset, uint8_t *parity)
 {
-       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) return FALSE;
-       if (tracing) {
+       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, offset)) 
+               return FALSE;
+
+       if (tracing)
                LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE);
-       }
+
        return Demod.len;
 }
 
 int ReaderReceive(uint8_t *receivedAnswer, uint8_t *parity)
 {
-       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) return FALSE;
-       if (tracing) {
+       if (!GetIso14443aAnswerFromTag(receivedAnswer, parity, 0)) 
+               return FALSE;
+
+       if (tracing)
                LogTrace(receivedAnswer, Demod.len, Demod.startTime*16 - DELAY_AIR2ARM_AS_READER, Demod.endTime*16 - DELAY_AIR2ARM_AS_READER, parity, FALSE);
-       }
+
        return Demod.len;
 }
 
        static byte_t par_low = 0;
        bool led_on = TRUE;
        uint8_t uid[10] = {0};
-       uint32_t cuid;
+       uint32_t cuid = 0;
 
        uint32_t nt = 0;
        uint32_t previous_nt = 0;
        static int32_t sync_cycles = 0;
        int catch_up_cycles = 0;
        int last_catch_up = 0;
-       uint16_t elapsed_prng_sequences;
+       uint16_t elapsed_prng_sequences = 0;
        uint16_t consecutive_resyncs = 0;
        int isOK = 0;
 
        int16_t debug_info_nr = -1;
        uint16_t strategy = 0;
        int32_t debug_info[MAX_STRATEGY][NUM_DEBUG_INFOS];
-       uint32_t select_time;
-       uint32_t halt_time;
+       uint32_t select_time = 0;
+       uint32_t halt_time = 0;
   
        for(uint16_t i = 0; TRUE; ++i) {
                
                        SpinDelay(200);
                        iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
                        SpinDelay(100);
+                       WDT_HIT();
                }
                
                if(!iso14443a_select_card(uid, NULL, &cuid, true, 0)) {
                        while(GetCountSspClk() > sync_time) {
                                elapsed_prng_sequences++;
                                sync_time = (sync_time & 0xfffffff8) + sync_cycles;
-                       }
+                       }                       
 
                        // Transmit MIFARE_CLASSIC_AUTH at synctime. Should result in returning the same tag nonce (== nt_attacked) 
                        ReaderTransmit(mf_auth, sizeof(mf_auth), &sync_time);
+                       
                } else {
                        // collect some information on tag nonces for debugging:
                        #define DEBUG_FIXED_SYNC_CYCLES PRNG_SEQUENCE_LENGTH
                } else {
                        if (nt_diff == 0 && first_try) {
                                par[0]++;
-                               if (par[0] == 0x00) {           // tried all 256 possible parities without success. Card doesn't send NACK.
+                               if (par[0] == 0x00) {   // tried all 256 possible parities without success. Card doesn't send NACK.
                                        isOK = -2;
                                        break;
                                }
                }
        }
 
-
        mf_nr_ar[3] &= 0x1F;
-       
+
+       WDT_HIT();
+               
        if (isOK == -4) {
                if (MF_DBGLEVEL >= 3) {
                        for (uint16_t i = 0; i <= MAX_STRATEGY; ++i) {
        struct Crypto1State *pcs;
        pcs = &mpcs;
        uint32_t numReads = 0;//Counts numer of times reader read a block
-       uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE];
-       uint8_t receivedCmd_par[MAX_MIFARE_PARITY_SIZE];
-       uint8_t response[MAX_MIFARE_FRAME_SIZE];
-       uint8_t response_par[MAX_MIFARE_PARITY_SIZE];
+       uint8_t receivedCmd[MAX_MIFARE_FRAME_SIZE] = {0x00};
+       uint8_t receivedCmd_par[MAX_MIFARE_PARITY_SIZE] = {0x00};
+       uint8_t response[MAX_MIFARE_FRAME_SIZE] = {0x00};
+       uint8_t response_par[MAX_MIFARE_PARITY_SIZE] = {0x00};
        
        uint8_t rATQA[] = {0x04, 0x00}; // Mifare classic 1k 4BUID
        uint8_t rUIDBCC1[] = {0xde, 0xad, 0xbe, 0xaf, 0x62};
 
                }\r
                \r
                UsbCommand resp;\r
-               if (WaitForResponseTimeout(CMD_ACK,&resp,1000)) {\r
+               if (WaitForResponseTimeout(CMD_ACK, &resp, 1000)) {\r
                        isOK  = resp.arg[0];\r
                        uid = (uint32_t)bytes_to_num(resp.d.asBytes +  0, 4);\r
                        nt =  (uint32_t)bytes_to_num(resp.d.asBytes +  4, 4);\r
        }\r
        t1 = clock() - t1;\r
        if ( t1 > 0 ){\r
-               PrintAndLog("Time in darkside: %f ticks - %1.2f sec\n", (float)t1, ((float)t1)/CLOCKS_PER_SEC);\r
+               PrintAndLog("Time in darkside: %.0f ticks - %4.2f sec\n (%u)", (float)t1, ((float)t1)/CLOCKS_PER_SEC, CLOCKS_PER_SEC);\r
        }\r
        return 0;\r
 }\r
                                \r
                                if (!res) {\r
                                        e_sector[i].Key[j] = key64;\r
-                                       e_sector[i].foundKey[j] = 1;\r
+                                       e_sector[i].foundKey[j] = TRUE;\r
                                }\r
                        }\r
                }\r
                                if ( !WaitForResponseTimeout(CMD_ACK,&resp,1500)) continue;\r
                                        \r
                                uint8_t isOK  = resp.arg[0] & 0xff;\r
-                               uint8_t *data = resp.d.asBytes;\r
-\r
-                               if (isOK) {\r
+                               if (!isOK) continue;\r
 \r
-                                       key64 = bytes_to_num(data+10, 6);\r
-                                       if (key64) {\r
-                                               PrintAndLog("Data:%s", sprint_hex(data+10, 6));\r
-                                               e_sector[i].foundKey[1] = 1;\r
-                                               e_sector[i].Key[1] = key64;\r
-                                       }\r
+                               uint8_t *data = resp.d.asBytes;\r
+                               key64 = bytes_to_num(data+10, 6);\r
+                               if (key64) {\r
+                                       PrintAndLog("Data:%s", sprint_hex(data+10, 6));\r
+                                       e_sector[i].foundKey[1] = 1;\r
+                                       e_sector[i].Key[1] = key64;\r
                                }\r
                        }\r
                }\r
                \r
                t1 = clock() - t1;\r
-               if ( t1 > 0 ) {\r
-                       PrintAndLog("Time in nested: %f ticks %1.2f sec (%1.2f sec per key)\n\n", (float)t1, ((float)t1)/CLOCKS_PER_SEC, ((float)t1)/iterations/CLOCKS_PER_SEC);\r
-               }\r
+               if ( t1 > 0 )\r
+                       PrintAndLog("Time in nested: %.0f ticks %4.2f sec (%4.2f sec per key)\n", (float)t1, ((float)t1)/CLOCKS_PER_SEC, ((float)t1)/iterations/CLOCKS_PER_SEC);\r
                \r
-               PrintAndLog("-----------------------------------------------\nIterations count: %d\n\n", iterations);\r
                //print them\r
-               PrintAndLog("|---|----------------|---|----------------|---|");\r
-               PrintAndLog("|sec|key A           |res|key B           |res|");\r
-               PrintAndLog("|---|----------------|---|----------------|---|");\r
-               for (i = 0; i < SectorsCnt; i++) {\r
-                       PrintAndLog("|%03d|  %012"llx"  | %d |  %012"llx"  | %d |", i,\r
-                               e_sector[i].Key[0], \r
-                               e_sector[i].foundKey[0], \r
-                               e_sector[i].Key[1], \r
-                               e_sector[i].foundKey[1]\r
-                       );\r
-               }\r
-               PrintAndLog("|---|----------------|---|----------------|---|");\r
+               printKeyTable( SectorsCnt, e_sector );\r
                \r
                // transfer them to the emulator\r
                if (transferToEml) {\r
        uint8_t *keyBlock = NULL, *p;\r
        uint8_t stKeyBlock = 20;\r
        \r
+       sector *e_sector = NULL;\r
+       \r
        int i, res;\r
        int     keycnt = 0;\r
        char ctmp       = 0x00;\r
        uint8_t keyType = 0;\r
        uint64_t key64 = 0;\r
        \r
+       uint8_t tempkey[6] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF};\r
+               \r
        int transferToEml = 0;\r
        int createDumpFile = 0;\r
 \r
        }\r
        \r
        // initialize storage for found keys\r
-       bool validKey[2][40];\r
-       uint8_t foundKey[2][40][6];\r
-       for (uint16_t t = 0; t < 2; t++) {\r
-               for (uint16_t sectorNo = 0; sectorNo < SectorsCnt; sectorNo++) {\r
-                       validKey[t][sectorNo] = false;\r
-                       for (uint16_t i = 0; i < 6; i++) {\r
-                               foundKey[t][sectorNo][i] = 0xff;\r
-                       }\r
-               }\r
+       e_sector = calloc(SectorsCnt, sizeof(sector));\r
+       if (e_sector == NULL) {\r
+               free(keyBlock);\r
+               return 1;\r
        }\r
+\r
+       uint8_t trgKeyType = 0;\r
+       \r
        // time\r
        clock_t t1 = clock();\r
-               \r
-       for ( int t = !keyType; t < 2; keyType==2?(t++):(t=2) ) {\r
-               int b=blockNo;\r
+       \r
+       // check keys.\r
+       for (trgKeyType = 0; trgKeyType < 2; ++trgKeyType) {\r
+               int b = blockNo;\r
                for (int i = 0; i < SectorsCnt; ++i) {\r
-                       PrintAndLog("--sector:%2d, block:%3d, key type:%C, key count:%2d ", i, b, t?'B':'A', keycnt);\r
-                       uint32_t max_keys = keycnt>USB_CMD_DATA_SIZE/6?USB_CMD_DATA_SIZE/6:keycnt;\r
-                       for (uint32_t c = 0; c < keycnt; c+=max_keys) {\r
-                               uint32_t size = keycnt-c>max_keys?max_keys:keycnt-c;\r
-                               res = mfCheckKeys(b, t, true, size, &keyBlock[6*c], &key64);\r
-                               if (res != 1) {\r
-                                       if (!res) {\r
-                                               PrintAndLog("Found valid key:[%012"llx"]",key64);\r
-                                               num_to_bytes(key64, 6, foundKey[t][i]);\r
-                                               validKey[t][i] = true;\r
-                                       } \r
+                       \r
+                       // skip already found keys.\r
+                       if (e_sector[i].foundKey[trgKeyType]) continue;\r
+                       \r
+                       PrintAndLog("--sector:%2d, block:%3d, key type:%C, key count:%2d ", i, b, trgKeyType ? 'B':'A', keycnt);\r
+                       \r
+                       uint32_t max_keys = keycnt > (USB_CMD_DATA_SIZE/6) ? (USB_CMD_DATA_SIZE/6) : keycnt;\r
+                       \r
+                       for (uint32_t c = 0; c < keycnt; c += max_keys) {\r
+                               \r
+                               uint32_t size = keycnt-c > max_keys ? max_keys : keycnt-c;\r
+                               \r
+                               res = mfCheckKeys(b, trgKeyType, true, size, &keyBlock[6*c], &key64);\r
+                               if (!res) {\r
+                                       PrintAndLog("Found valid key:[%012"llx"]",key64);                                       \r
+                                       e_sector[i].Key[trgKeyType] = key64;\r
+                                       e_sector[i].foundKey[trgKeyType] = TRUE;\r
+                                       break;\r
                                } else {\r
-                                       PrintAndLog("Command execute timeout");\r
+                                       e_sector[i].Key[trgKeyType] = 0xffffffffffff;\r
+                                       e_sector[i].foundKey[trgKeyType] = FALSE;\r
                                }\r
                        }\r
-                       b<127?(b+=4):(b+=16);   \r
+                       b < 127 ? ( b +=4 ) : ( b += 16 );      \r
                }\r
        }\r
-       t1 = clock() - t1;\r
-       if ( t1 > 0 ){\r
-               printf("Time in checkkeys: %f ticks  %1.2f sec (%1.2f sec per key)\n\n", (float)t1, ((float)t1)/CLOCKS_PER_SEC, ((float)t1)/keycnt/CLOCKS_PER_SEC);\r
+       // 20160116 If Sector A is found, but not Sector B,  try just reading it of the tag?\r
+       PrintAndLog("testing to read B...");\r
+       for (i = 0; i < SectorsCnt; i++) {\r
+               // KEY A  but not KEY B\r
+               if ( e_sector[i].foundKey[0] && !e_sector[i].foundKey[1] ) {\r
+                       \r
+                       uint8_t sectrail = (FirstBlockOfSector(i) + NumBlocksPerSector(i) - 1);\r
+                       \r
+                       UsbCommand c = {CMD_MIFARE_READBL, {sectrail, 0, 0}};\r
+                       num_to_bytes(e_sector[i].Key[0], 6, c.d.asBytes); // KEY A\r
+                       clearCommandBuffer();\r
+                       SendCommand(&c);\r
+\r
+                       UsbCommand resp;\r
+                       if ( !WaitForResponseTimeout(CMD_ACK,&resp,1500)) continue;\r
+                               \r
+                       uint8_t isOK  = resp.arg[0] & 0xff;\r
+                       if (!isOK) continue;\r
+\r
+                       uint8_t *data = resp.d.asBytes;\r
+                       key64 = bytes_to_num(data+10, 6);\r
+                       if (key64) {\r
+                               PrintAndLog("Data:%s", sprint_hex(data+10, 6));\r
+                               e_sector[i].foundKey[1] = 1;\r
+                               e_sector[i].Key[1] = key64;\r
+                       }\r
+               }\r
        }\r
+       \r
+       t1 = clock() - t1;\r
+       if ( t1 > 0 )\r
+               printf("Time in checkkeys: %.0f ticks  %1.2f sec (%1.2f sec per key)\n\n", (float)t1, ((float)t1)/CLOCKS_PER_SEC, ((float)t1)/keycnt/CLOCKS_PER_SEC);\r
 \r
+       //print them\r
+       printKeyTable( SectorsCnt, e_sector );\r
+       \r
        if (transferToEml) {\r
-               uint8_t block[16];\r
-               for (uint16_t sectorNo = 0; sectorNo < SectorsCnt; sectorNo++) {\r
-                       if (validKey[0][sectorNo] || validKey[1][sectorNo]) {\r
-                               mfEmlGetMem(block, FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 1);\r
-                               for (uint16_t t = 0; t < 2; t++) {\r
-                                       if (validKey[t][sectorNo]) {\r
-                                               memcpy(block + t*10, foundKey[t][sectorNo], 6);\r
-                                       }\r
-                               }\r
-                               mfEmlSetMem(block, FirstBlockOfSector(sectorNo) + NumBlocksPerSector(sectorNo) - 1, 1);\r
-                       }\r
+               uint8_t block[16] = {0x00};\r
+               for (uint8_t i = 0; i < SectorsCnt; ++i ) {\r
+                       mfEmlGetMem(block, FirstBlockOfSector(i) + NumBlocksPerSector(i) - 1, 1);\r
+                       if (e_sector[i].foundKey[0])\r
+                               num_to_bytes(e_sector[i].Key[0], 6, block);\r
+                       if (e_sector[i].foundKey[1])\r
+                               num_to_bytes(e_sector[i].Key[1], 6, block+10);\r
+                       mfEmlSetMem(block, FirstBlockOfSector(i) + NumBlocksPerSector(i) - 1, 1);\r
                }\r
                PrintAndLog("Found keys have been transferred to the emulator memory");\r
        }\r
-\r
+       \r
        if (createDumpFile) {\r
                FILE *fkeys = fopen("dumpkeys.bin","wb");\r
                if (fkeys == NULL) { \r
                        PrintAndLog("Could not create file dumpkeys.bin");\r
                        free(keyBlock);\r
+                       free(e_sector);\r
                        return 1;\r
                }\r
-               for (uint16_t t = 0; t < 2; t++) {\r
-                       fwrite(foundKey[t], 1, 6*SectorsCnt, fkeys);\r
+               PrintAndLog("Printing keys to binary file dumpkeys.bin...");\r
+       \r
+               for( i=0; i<SectorsCnt; i++) {\r
+                       num_to_bytes(e_sector[i].Key[0], 6, tempkey);\r
+                       fwrite ( tempkey, 1, 6, fkeys );\r
+               }\r
+               for(i=0; i<SectorsCnt; i++) {\r
+                       num_to_bytes(e_sector[i].Key[1], 6, tempkey);\r
+                       fwrite ( tempkey, 1, 6, fkeys );\r
                }\r
                fclose(fkeys);\r
-               PrintAndLog("Found keys have been dumped to file dumpkeys.bin. 0xffffffffffff has been inserted for unknown keys.");\r
+               PrintAndLog("Found keys have been dumped to file dumpkeys.bin. 0xffffffffffff has been inserted for unknown keys.");                    \r
        }\r
-\r
+       \r
        free(keyBlock);\r
+       free(e_sector);\r
        PrintAndLog("");\r
        return 0;\r
 }\r
 \r
+void printKeyTable( uint8_t sectorscnt, sector *e_sector ){\r
+       PrintAndLog("|---|----------------|---|----------------|---|");\r
+       PrintAndLog("|sec|key A           |res|key B           |res|");\r
+       PrintAndLog("|---|----------------|---|----------------|---|");\r
+       for (uint8_t i = 0; i < sectorscnt; ++i) {\r
+               PrintAndLog("|%03d|  %012"llx"  | %d |  %012"llx"  | %d |", i,\r
+                       e_sector[i].Key[0], e_sector[i].foundKey[0], \r
+                       e_sector[i].Key[1], e_sector[i].foundKey[1]\r
+               );\r
+       }\r
+       PrintAndLog("|---|----------------|---|----------------|---|");\r
+}\r
+\r
 int CmdHF14AMf1kSim(const char *Cmd)\r
 {\r
        uint8_t uid[7] = {0, 0, 0, 0, 0, 0, 0};\r