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chg: 'hf mf mifare' - my darkside attack has been buggy last months. This reverts back to offical pm3.

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iceman1001 2017-12-06 21:53:11 +01:00
parent 2bc60a87aa
commit e94ceecb79
1 changed files with 2 additions and 3 deletions
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5
armsrc/iso14443a.c
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@ -1832,7 +1832,6 @@ static int GetATQA(uint8_t *resp, uint8_t *resp_par) {
return len;
}
// performs iso14443a anticollision (optional) and card select procedure
// fills the uid and cuid pointer unless NULL
// fills the card info record unless NULL
@ -2427,7 +2426,7 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
}
// 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) {
int nt_distance = dist_nt(previous_nt, nt);
@ -2500,7 +2499,7 @@ void ReaderMifare(bool first_try, uint8_t block, uint8_t keytype ) {
if (received_nack) {
catch_up_cycles = 8; // the PRNG is delayed by 8 cycles due to the NAC (4Bits = 0x05 encrypted) transfer
if (nt_diff == 0)
if (nt_diff == 0 && first_try)
par_low = par[0] & 0xE0; // there is no need to check all parities for other nt_diff. Parity Bits for mf_nr_ar[0..2] won't change
par_list[nt_diff] = SwapBits(par[0], 8);