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CHG: fixed the collapsing comments when opening this file in notepad++ Need spaces between // text or /* ...

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iceman1001 2016-08-24 12:34:34 +02:00
commit f38cfd6693
1 changed files with 36 additions and 50 deletions
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28
armsrc/iso14443a.c
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@ -2142,28 +2142,12 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
if (nt1 == nt2) return 0;
uint16_t i;
uint32_t nttmp1 = nt1;
uint32_t nttmp2 = nt2;
for (i = 1; i < (32768/8); ++i) {
for (uint16_t i = 1; i < 0xFFFF; ++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;
nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+1);
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;
nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+3);
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;
nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+5);
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;
nttmp2 = prng_successor(nttmp2, 1); if (nttmp2 == nt1) return -(i+7);
}
// either nt1 or nt2 are invalid nonces
return(-99999);
@ -2175,6 +2159,7 @@ int32_t dist_nt(uint32_t nt1, uint32_t nt2) {
// Cloning MiFare Classic Rail and Building Passes, Anywhere, Anytime"
// (article by Nicolas T. Courtois, 2009)
//-----------------------------------------------------------------------------
void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
uint8_t mf_auth[] = { keytype, block, 0x00, 0x00 };
@ -2221,10 +2206,12 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
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).
nt_attacked = 0;
if (MF_DBGLEVEL >= 4) Dbprintf("Mifare::Sync %08x", sync_time);
if (first_try) {
mf_nr_ar3 = 0;
nt_attacked = 0;
par_low = 0;
} else {
// we were unsuccessful on a previous call.
@ -2293,11 +2280,9 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
// Transmit reader nonce with fake par
ReaderTransmitPar(mf_nr_ar, sizeof(mf_nr_ar), par, NULL);
WDT_HIT();
LED_B_ON();
// we didn't calibrate our clock yet,
// iceman: has to be calibrated every time.
if (previous_nt && !nt_attacked) {
if (first_try && previous_nt && !nt_attacked) {
nt_distance = dist_nt(previous_nt, nt);
@ -2426,6 +2411,7 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
set_tracing(FALSE);
}
/**
*MIFARE 1K simulate.
*