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Merge pull request #515 from pwpiwi/fix_14atimeout

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fix: hf mf hardnested failed with new WUPA timing
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Iceman 2017-12-12 15:50:53 +01:00 • committed by GitHub
commit feb1bf4184
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2 changed files with 9 additions and 12 deletions
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11
armsrc/iso14443a.c
View file

@ -189,13 +189,14 @@ void iso14a_set_trigger(bool enable) {
void iso14a_set_timeout(uint32_t timeout) {
iso14a_timeout = timeout - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/(16*8);
// adjust timeout by FPGA delays and 2 additional ssp_frames to detect SOF
iso14a_timeout = timeout + (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/(16*8) + 2;
if(MF_DBGLEVEL >= 3) Dbprintf("ISO14443A Timeout set to %ld (%dms)", timeout, timeout / 106);
}
uint32_t iso14a_get_timeout(void) {
return iso14a_timeout + (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/(16*8);
return iso14a_timeout - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/(16*8) - 2;
}
//-----------------------------------------------------------------------------
@ -1955,9 +1956,9 @@ int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
} else{
// S-Block WTX
while((data_bytes[0] & 0xF2) == 0xF2) {
uint32_t save_iso14a_timeout = iso14a_timeout;
uint32_t save_iso14a_timeout = iso14a_get_timeout();
// temporarily increase timeout
iso14a_timeout = MAX((data_bytes[1] & 0x3f) * iso14a_timeout, MAX_ISO14A_TIMEOUT);
iso14a_set_timeout(MAX((data_bytes[1] & 0x3f) * save_iso14a_timeout, MAX_ISO14A_TIMEOUT));
// Transmit WTX back
// byte1 - WTXM [1..59]. command FWT=FWT*WTXM
data_bytes[1] = data_bytes[1] & 0x3f; // 2 high bits mandatory set to 0b
@ -1969,7 +1970,7 @@ int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data) {
len = ReaderReceive(data, parity);
data_bytes = data;
// restore timeout
iso14a_timeout = save_iso14a_timeout;
iso14a_set_timeout(save_iso14a_timeout);
}
// if we received an I- or R(ACK)-Block with a block number equal to the

10
armsrc/mifarecmd.c
View file

@ -694,10 +694,9 @@ void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags,
continue;
}
// send a dummy byte as reader response in order to trigger the cards authentication timeout
uint8_t dummy_answer = 0;
ReaderTransmit(&dummy_answer, 1, NULL);
timeout = GetCountSspClk() + AUTHENTICATION_TIMEOUT;
// send a dummy response in order to trigger the cards authentication failure timeout
uint8_t dummy_answer[8] = {0};
ReaderTransmit(dummy_answer, 8, NULL);
num_nonces++;
if (num_nonces % 2) {
@ -710,9 +709,6 @@ void MifareAcquireEncryptedNonces(uint32_t arg0, uint32_t arg1, uint32_t flags,
i += 9;
}
// wait for the card to become ready again
while(GetCountSspClk() < timeout);
}
LED_C_OFF();