github/RRG-Proxmark3
1
0
Fork 0
mirror of https://github.com/RfidResearchGroup/proxmark3.git synced 2025-08-21 22:03:42 -07:00
Code Issues Projects Releases Packages Wiki Activity Actions

chg

Browse source
This commit is contained in:
iceman1001 2017-12-05 11:39:31 +01:00
commit 4289846383
1 changed files with 9 additions and 3 deletions
Download patch file Download diff file Expand all files Collapse all files

12
armsrc/iso14443a.c
View file

@ -2558,6 +2558,7 @@ void DetectNACKbug() {
uint32_t nt = 0;
uint32_t previous_nt = 0;
uint32_t cuid = 0;
int32_t isOK = 0;
int32_t catch_up_cycles = 0;
int32_t last_catch_up = 0;
@ -2600,6 +2601,7 @@ void DetectNACKbug() {
// Test if the action was cancelled
if(BUTTON_PRESS()) {
isOK = -1;
break;
}
@ -2660,7 +2662,8 @@ void DetectNACKbug() {
if (nt_distance == -99999) { // invalid nonce received
unexpected_random++;
if (unexpected_random > MAX_UNEXPECTED_RANDOM) {
isOK = -3; // Card has an unpredictable PRNG. Give up
// Card has an unpredictable PRNG. Give up
isOK = -3;
break;
} else {
if (sync_cycles <= 0) sync_cycles += PRNG_SEQUENCE_LENGTH;
@ -2757,8 +2760,11 @@ void DetectNACKbug() {
Dbprintf("Num of sent auth requestes : %u", i);
Dbprintf("Num of received NACK : %u", num_nacks);
cmd_send(CMD_ACK, num_nacks, 0, 0, 0, 0 );
if ( num_nacks == 3)
isOK = 1;
cmd_send(CMD_ACK, isOK, num_nacks, 0, 0, 0 );
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LEDsoff();