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https://github.com/RfidResearchGroup/proxmark3.git
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hf 14a: if the tag supports it, set default timeout according to ATS
hf epa: remove explicit but arbitrary timeout settings Bugfix: don't timeout when frame transmission has already started
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7554370c30
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@ -257,9 +257,6 @@ void EPA_PACE_Collect_Nonce(UsbCommand *c)
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return;
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}
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// increase the timeout (at least some cards really do need this!)
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iso14a_set_timeout(0x0002FFFF);
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// read the CardAccess file
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// this array will hold the CardAccess file
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uint8_t card_access[256] = {0};
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@ -426,8 +423,6 @@ int EPA_Setup()
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// power up the field
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iso14443a_setup(FPGA_HF_ISO14443A_READER_MOD);
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iso14a_set_timeout(10500);
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// select the card
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return_code = iso14443a_select_card(uid, &card_select_info, NULL);
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if (return_code != 1) {
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@ -141,16 +141,40 @@ const uint8_t OddByteParity[256] = {
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1, 0, 0, 1, 0, 1, 1, 0, 0, 1, 1, 0, 1, 0, 0, 1
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};
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void iso14a_set_trigger(bool enable) {
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trigger = enable;
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}
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void iso14a_set_timeout(uint32_t timeout) {
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iso14a_timeout = timeout;
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if(MF_DBGLEVEL >= 3) Dbprintf("ISO14443A Timeout set to %ld (%dms)", iso14a_timeout, iso14a_timeout / 106);
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}
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void iso14a_set_ATS_timeout(uint8_t *ats) {
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uint8_t tb1;
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uint8_t fwi;
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uint32_t fwt;
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if (ats[0] > 1) { // there is a format byte T0
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if ((ats[1] & 0x20) == 0x20) { // there is an interface byte TB(1)
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if ((ats[1] & 0x10) == 0x10) { // there is an interface byte TA(1) preceding TB(1)
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tb1 = ats[3];
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} else {
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tb1 = ats[2];
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}
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fwi = (tb1 & 0xf0) >> 4; // frame waiting indicator (FWI)
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fwt = 256 * 16 * (1 << fwi); // frame waiting time (FWT) in 1/fc
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iso14a_set_timeout(fwt/(8*16));
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}
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}
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}
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//-----------------------------------------------------------------------------
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// Generate the parity value for a byte sequence
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//
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@ -1600,7 +1624,7 @@ static int GetIso14443aAnswerFromTag(uint8_t *receivedResponse, uint8_t *receive
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if(ManchesterDecoding(b, offset, 0)) {
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NextTransferTime = MAX(NextTransferTime, Demod.endTime - (DELAY_AIR2ARM_AS_READER + DELAY_ARM2AIR_AS_READER)/16 + FRAME_DELAY_TIME_PICC_TO_PCD);
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return TRUE;
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} else if (c++ > iso14a_timeout) {
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} else if (c++ > iso14a_timeout && Demod.state == DEMOD_UNSYNCD) {
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return FALSE;
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}
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}
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@ -1798,6 +1822,10 @@ int iso14443a_select_card(byte_t *uid_ptr, iso14a_card_select_t *p_hi14a_card, u
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// reset the PCB block number
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iso14_pcb_blocknum = 0;
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// set default timeout based on ATS
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iso14a_set_ATS_timeout(resp);
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return 1;
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}
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@ -85,6 +85,5 @@ extern void iso14443a_setup(uint8_t fpga_minor_mode);
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extern int iso14_apdu(uint8_t *cmd, uint16_t cmd_len, void *data);
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extern int iso14443a_select_card(uint8_t *uid_ptr, iso14a_card_select_t *resp_data, uint32_t *cuid_ptr);
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extern void iso14a_set_trigger(bool enable);
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extern void iso14a_set_timeout(uint32_t timeout);
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#endif /* __ISO14443A_H */
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@ -129,11 +129,6 @@ int CmdHF14AList(const char *Cmd)
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return 0;
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}
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void iso14a_set_timeout(uint32_t timeout) {
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UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_SET_TIMEOUT, 0, timeout}};
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SendCommand(&c);
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}
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int CmdHF14AReader(const char *Cmd)
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{
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UsbCommand c = {CMD_READER_ISO_14443a, {ISO14A_CONNECT | ISO14A_NO_DISCONNECT, 0, 0}};
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@ -346,7 +341,7 @@ int CmdHF14AReader(const char *Cmd)
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SendCommand(&c);
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WaitForResponse(CMD_ACK,&resp);
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uint8_t isOK = resp.arg[0] & 0xff;
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PrintAndLog(" Answers to chinese magic backdoor commands: %s", (isOK ? "YES" : "NO") );
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PrintAndLog("Answers to chinese magic backdoor commands: %s", (isOK ? "YES" : "NO") );
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// disconnect
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c.cmd = CMD_READER_ISO_14443a;
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@ -510,12 +505,13 @@ int CmdHF14ACmdRaw(const char *cmd) {
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uint8_t active=0;
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uint8_t active_select=0;
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uint16_t numbits=0;
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uint16_t timeout=0;
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uint32_t timeout=0;
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uint8_t bTimeout=0;
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char buf[5]="";
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int i=0;
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uint8_t data[USB_CMD_DATA_SIZE];
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unsigned int datalen=0, temp;
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uint16_t datalen=0;
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uint32_t temp;
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if (strlen(cmd)<2) {
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PrintAndLog("Usage: hf 14a raw [-r] [-c] [-p] [-f] [-b] [-t] <number of bits> <0A 0B 0C ... hex>");
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@ -525,7 +521,7 @@ int CmdHF14ACmdRaw(const char *cmd) {
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PrintAndLog(" -a active signal field ON without select");
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PrintAndLog(" -s active signal field ON with select");
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PrintAndLog(" -b number of bits to send. Useful for send partial byte");
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PrintAndLog(" -t timeout");
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PrintAndLog(" -t timeout in ms");
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return 0;
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}
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@ -561,7 +557,7 @@ int CmdHF14ACmdRaw(const char *cmd) {
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case 't':
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bTimeout=1;
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sscanf(cmd+i+2,"%d",&temp);
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timeout = temp & 0xFFFF;
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timeout = temp;
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i+=3;
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while(cmd[i]!=' ' && cmd[i]!='\0') { i++; }
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i+=2;
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@ -610,13 +606,13 @@ int CmdHF14ACmdRaw(const char *cmd) {
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c.arg[0] |= ISO14A_NO_SELECT;
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}
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if(bTimeout){
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#define MAX_TIMEOUT 624*105 // max timeout is 624 ms
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#define MAX_TIMEOUT 40542464 // (2^32-1) * (8*16) / 13560000Hz * 1000ms/s =
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c.arg[0] |= ISO14A_SET_TIMEOUT;
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c.arg[2] = timeout * 105; // each bit is about 9.4 us
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if(c.arg[2]>MAX_TIMEOUT) {
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c.arg[2] = MAX_TIMEOUT;
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PrintAndLog("Set timeout to 624 ms. The max we can wait for response");
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if(timeout > MAX_TIMEOUT) {
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timeout = MAX_TIMEOUT;
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PrintAndLog("Set timeout to 40542 seconds (11.26 hours). The max we can wait for response");
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}
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c.arg[2] = 13560000 / 1000 / (8*16) * timeout; // timeout in ETUs (time to transfer 1 bit, approx. 9.4 us)
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}
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if(power)
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c.arg[0] |= ISO14A_NO_DISCONNECT;
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