chg: syntax sugar

[proxmark3-svn] / armsrc / iso14443a.c

diff --git a/armsrc/iso14443a.c b/armsrc/iso14443a.c
index 570f028cb4f5cea47b1bc581e76216b275fdbdc3..3daab1994f089be40b7eac21517fe9bcfa0fe49d 100644 (file)
--- a/armsrc/iso14443a.c
+++ b/armsrc/iso14443a.c
@@ -1866,6 +1866,9 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
                        memset(uid_ptr,0,10);
        }
 
                        memset(uid_ptr,0,10);
        }
 

+       // reset the PCB block number
+       iso14_pcb_blocknum = 0;
+       

        // check for proprietary anticollision:
        if ((resp[0] & 0x1F) == 0) return 3;
        
        // check for proprietary anticollision:
        if ((resp[0] & 0x1F) == 0) return 3;
        


@@ -1977,12 +1980,8 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
                p_hi14a_card->ats_len = len;
        }
 
                p_hi14a_card->ats_len = len;
        }
 

-       // reset the PCB block number
-       iso14_pcb_blocknum = 0;
-

        // set default timeout based on ATS
        iso14a_set_ATS_timeout(resp);
        // set default timeout based on ATS
        iso14a_set_ATS_timeout(resp);

-

        return 1;       
 }
 
        return 1;       
 }
 


@@ -2145,29 +2144,24 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
        uint32_t nttmp1 = nt1;
        uint32_t nttmp2 = nt2;
 
        uint32_t nttmp1 = nt1;
        uint32_t nttmp2 = nt2;
 

-       for (uint16_t i = 1; i < 32768/8; ++i) {
+       // 0xFFFF -- Half up and half down to find distance between nonces
+       for (uint16_t i = 1; i < 32768/8; i += 8) {

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -i;
-               

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+1;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+1;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+1);
-               

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+2;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+2;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+2);
-

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+3;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+3;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+3);
-               

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+4;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+4;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+4);
-               

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+5;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+5;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+5);
-               

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+6;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+6;

-               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+6);
-               

                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+7;
                nttmp1 = prng_successor(nttmp1, 1);     if (nttmp1 == nt2) return i+7;

+               
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -i;
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+1);
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+2);
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+3);
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+4);
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+5);
+               nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+6);

                nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+7);               
        }
        // either nt1 or nt2 are invalid nonces 
                nttmp2 = prng_successor(nttmp2, 1);     if (nttmp2 == nt1) return -(i+7);               
        }
        // either nt1 or nt2 are invalid nonces 


@@ -2221,14 +2215,14 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
        
        BigBuf_free(); BigBuf_Clear_ext(false); 
        clear_trace();
        
        BigBuf_free(); BigBuf_Clear_ext(false); 
        clear_trace();

-       set_tracing(TRUE);      
+       set_tracing(FALSE);     

        iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
 
        sync_time = GetCountSspClk() & 0xfffffff8;
        sync_cycles = PRNG_SEQUENCE_LENGTH; // Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).              
        nt_attacked = 0;
        
        iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
 
        sync_time = GetCountSspClk() & 0xfffffff8;
        sync_cycles = PRNG_SEQUENCE_LENGTH; // Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).              
        nt_attacked = 0;
        

-   if (MF_DBGLEVEL >= 4)       Dbprintf("Mifare::Sync %08x", sync_time);
+   if (MF_DBGLEVEL >= 4)       Dbprintf("Mifare::Sync %u", sync_time);

                                
        if (first_try) {
                mf_nr_ar3 = 0;
                                
        if (first_try) {
                mf_nr_ar3 = 0;