FIX: at least now the special zero parity attack, repeats and doesn't crash. Howev...

[proxmark3-svn] / armsrc / iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index a2014079702e2c1d9f751b96276e015d3b3be974..642e889953327dcf7f8a17db3fb961040dc609cb 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -867,10 +867,10 @@ void SimulateIso14443aTag(int tagType, int flags, byte_t* data) {
        uint8_t cardAUTHKEY = 0xff;  // no authentication
        // allow collecting up to 8 sets of nonces to allow recovery of up to 8 keys
        #define ATTACK_KEY_COUNT 8 // keep same as define in cmdhfmf.c -> readerAttack()
-       nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; //*2 for 2 separate attack types (nml, moebius)
+       nonces_t ar_nr_resp[ATTACK_KEY_COUNT*2]; // for 2 separate attack types (nml, moebius)
        memset(ar_nr_resp, 0x00, sizeof(ar_nr_resp));
 
-       uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; //*2 for 2nd attack type (moebius)
+       uint8_t ar_nr_collected[ATTACK_KEY_COUNT*2]; // for 2nd attack type (moebius)
        memset(ar_nr_collected, 0x00, sizeof(ar_nr_collected));
        uint8_t nonce1_count = 0;
        uint8_t nonce2_count = 0;
@@ -2218,10 +2218,11 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
        set_tracing(TRUE);      
        iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
 
-       
-       if (first_try) { 
-               sync_time = GetCountSspClk() & 0xfffffff8;
-               sync_cycles = PRNG_SEQUENCE_LENGTH + 1130; //65536;     //0x10000       // Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).
+       sync_time = GetCountSspClk() & 0xfffffff8;
+       // iceman,  i add 1130 because during my observations this makse the syncronization much fast to sync.
+       sync_cycles = PRNG_SEQUENCE_LENGTH + 1130; //65536;     // Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).          
+
+       if (first_try) {
                mf_nr_ar3 = 0;                  
                nt_attacked = 0;
                par_low = 0;
@@ -2294,7 +2295,9 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
        
                WDT_HIT();
                LED_B_ON();
-               if (first_try && previous_nt && !nt_attacked) { // we didn't calibrate our clock yet
+               // we didn't calibrate our clock yet,
+               // iceman: has to be calibrated every time.
+               if (previous_nt && !nt_attacked) { 
 
                        nt_distance = dist_nt(previous_nt, nt);