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chg: hf mf nack - now uses NG

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This commit is contained in:
iceman1001 2019-05-15 07:47:46 -04:00
commit bfe2cff383
3 changed files with 25 additions and 12 deletions
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18
armsrc/iso14443a.c
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@ -2806,8 +2806,8 @@ void DetectNACKbug() {
uint8_t par[1] = {0}; // maximum 8 Bytes to be sent here, 1 byte parity is therefore enough
uint32_t nt = 0, previous_nt = 0, nt_attacked = 0, cuid = 0;
int32_t isOK = 0, catch_up_cycles = 0, last_catch_up = 0;
uint8_t cascade_levels = 0, num_nacks = 0;
int32_t catch_up_cycles = 0, last_catch_up = 0;
uint8_t cascade_levels = 0, num_nacks = 0, isOK = 0;
uint16_t elapsed_prng_sequences = 1;
uint16_t consecutive_resyncs = 0;
uint16_t unexpected_random = 0;
@ -2816,6 +2816,8 @@ void DetectNACKbug() {
bool have_uid = false;
bool received_nack;
int32_t status = PM3_SUCCESS;
// Mifare Classic's random generator repeats every 2^16 cycles (and so do the nonces).
int32_t sync_cycles = PRNG_SEQUENCE_LENGTH;
@ -2843,7 +2845,7 @@ void DetectNACKbug() {
// Test if the action was cancelled
if (BUTTON_PRESS()) {
isOK = 99;
status = PM3_EOPABORTED;
break;
}
@ -3001,6 +3003,7 @@ void DetectNACKbug() {
// tried all 256 possible parities without success.
if (par[0] == 0) {
// did we get one NACK?
if (num_nacks == 1)
isOK = 1;
break;
@ -3012,8 +3015,15 @@ void DetectNACKbug() {
// num_nacks = number of nacks recieved. should be only 1. if not its a clone card which always sends NACK (parity == 0) ?
// i = number of authentications sent. Not always 256, since we are trying to sync but close to it.
reply_mix(CMD_ACK, isOK, num_nacks, i, 0, 0);
uint8_t *data = BigBuf_malloc(4);
data[0] = isOK;
data[1] = num_nacks;
num_to_bytes(i, 2, data + 2);
reply_ng(CMD_MIFARE_NACK_DETECT, status, data, 4);
//reply_mix(CMD_ACK, isOK, num_nacks, i, 0, 0);
BigBuf_free();
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LEDsoff();
set_tracing(false);