/**
* @brief Does the actual simulation
- * @param csn - csn to use
- * @param breakAfterMacReceived if true, returns after reader MAC has been received.
*/
int doIClassSimulation(int simulationMode, uint8_t *reader_mac_buf) {
uint8_t *resp_cc = BigBuf_malloc(18);
int resp_cc_len;
+ // Kd, Kc (blocks 3 and 4). Cannot be read. Always respond with 0xff bytes only
+ uint8_t *resp_ff = BigBuf_malloc(22);
+ int resp_ff_len;
+ uint8_t ff_data[10] = {0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00};
+ AppendCrc(ff_data, 8);
+
// Application Issuer Area (block 5)
uint8_t *resp_aia = BigBuf_malloc(22);
int resp_aia_len;
memcpy(resp_cc, ToSend, ToSendMax);
resp_cc_len = ToSendMax;
+ // Kd, Kc (blocks 3 and 4)
+ CodeIso15693AsTag(ff_data, sizeof(ff_data));
+ memcpy(resp_ff, ToSend, ToSendMax);
+ resp_ff_len = ToSendMax;
+
// Application Issuer Area (block 5)
CodeIso15693AsTag(aia_data, sizeof(aia_data));
memcpy(resp_aia, ToSend, ToSendMax);
resp_aia_len = ToSendMax;
//This is used for responding to READ-block commands or other data which is dynamically generated
- uint8_t *data_generic_trace = BigBuf_malloc(8 + 2); // 8 bytes data + 2byte CRC is max tag answer
- uint8_t *data_response = BigBuf_malloc( (8 + 2) * 2 + 2);
+ uint8_t *data_generic_trace = BigBuf_malloc(32 + 2); // 32 bytes data + 2byte CRC is max tag answer
+ uint8_t *data_response = BigBuf_malloc( (32 + 2) * 2 + 2);
LED_A_ON();
bool buttonPressed = false;
+ enum { IDLE, ACTIVATED, SELECTED, HALTED } chip_state = IDLE;
+
while (!exitLoop) {
WDT_HIT();
LED_B_OFF();
buttonPressed = true;
break;
}
-
+
//Signal tracer
LED_C_ON();
modulated_response_size = 0;
trace_data = NULL;
trace_data_size = 0;
- if (receivedCmd[0] == ICLASS_CMD_ACTALL) {
- // Reader in anticollission phase
- modulated_response = resp_sof;
- modulated_response_size = resp_sof_Len;
- trace_data = sof_data;
- trace_data_size = sizeof(sof_data);
+
+ if (receivedCmd[0] == ICLASS_CMD_ACTALL && len == 1) {
+ // Reader in anticollision phase
+ if (chip_state != HALTED) {
+ modulated_response = resp_sof;
+ modulated_response_size = resp_sof_Len;
+ trace_data = sof_data;
+ trace_data_size = sizeof(sof_data);
+ chip_state = ACTIVATED;
+ }
} else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 1) { // identify
- // Reader asks for anticollission CSN
- modulated_response = resp_anticoll;
- modulated_response_size = resp_anticoll_len;
- trace_data = anticoll_data;
- trace_data_size = sizeof(anticoll_data);
- //DbpString("Reader requests anticollission CSN:");
-
+ // Reader asks for anticollision CSN
+ if (chip_state == SELECTED || chip_state == ACTIVATED) {
+ modulated_response = resp_anticoll;
+ modulated_response_size = resp_anticoll_len;
+ trace_data = anticoll_data;
+ trace_data_size = sizeof(anticoll_data);
+ }
+
+ } else if (receivedCmd[0] == ICLASS_CMD_SELECT && len == 9) {
+ // Reader selects anticollision CSN.
+ // Tag sends the corresponding real CSN
+ if (chip_state == ACTIVATED || chip_state == SELECTED) {
+ if (!memcmp(receivedCmd+1, anticoll_data, 8)) {
+ modulated_response = resp_csn;
+ modulated_response_size = resp_csn_len;
+ trace_data = csn_data;
+ trace_data_size = sizeof(csn_data);
+ chip_state = SELECTED;
+ } else {
+ chip_state = IDLE;
+ }
+ } else if (chip_state == HALTED) {
+ // RESELECT with CSN
+ if (!memcmp(receivedCmd+1, csn_data, 8)) {
+ modulated_response = resp_csn;
+ modulated_response_size = resp_csn_len;
+ trace_data = csn_data;
+ trace_data_size = sizeof(csn_data);
+ chip_state = SELECTED;
+ }
+ }
+
} else if (receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4) { // read block
uint16_t blockNo = receivedCmd[1];
- if (simulationMode != ICLASS_SIM_MODE_FULL) {
- // provide defaults for blocks 0, 1, 2, 5
- switch (blockNo) {
- case 0: // csn (block 00)
- modulated_response = resp_csn;
- modulated_response_size = resp_csn_len;
- trace_data = csn_data;
- trace_data_size = sizeof(csn_data);
- break;
- case 1: // configuration (block 01)
- modulated_response = resp_conf;
- modulated_response_size = resp_conf_len;
- trace_data = conf_data;
- trace_data_size = sizeof(conf_data);
- break;
- case 2: // e-purse (block 02)
- modulated_response = resp_cc;
- modulated_response_size = resp_cc_len;
- trace_data = card_challenge_data;
- trace_data_size = sizeof(card_challenge_data);
- // set epurse of sim2,4 attack
- if (reader_mac_buf != NULL) {
- memcpy(reader_mac_buf, card_challenge_data, 8);
- }
- break;
- case 5: // Application Issuer Area (block 05)
- modulated_response = resp_aia;
- modulated_response_size = resp_aia_len;
- trace_data = aia_data;
- trace_data_size = sizeof(aia_data);
- break;
- // default: don't respond
+ if (chip_state == SELECTED) {
+ if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) {
+ // provide defaults for blocks 0 ... 5
+ switch (blockNo) {
+ case 0: // csn (block 00)
+ modulated_response = resp_csn;
+ modulated_response_size = resp_csn_len;
+ trace_data = csn_data;
+ trace_data_size = sizeof(csn_data);
+ break;
+ case 1: // configuration (block 01)
+ modulated_response = resp_conf;
+ modulated_response_size = resp_conf_len;
+ trace_data = conf_data;
+ trace_data_size = sizeof(conf_data);
+ break;
+ case 2: // e-purse (block 02)
+ modulated_response = resp_cc;
+ modulated_response_size = resp_cc_len;
+ trace_data = card_challenge_data;
+ trace_data_size = sizeof(card_challenge_data);
+ // set epurse of sim2,4 attack
+ if (reader_mac_buf != NULL) {
+ memcpy(reader_mac_buf, card_challenge_data, 8);
+ }
+ break;
+ case 3:
+ case 4: // Kd, Kc, always respond with 0xff bytes
+ modulated_response = resp_ff;
+ modulated_response_size = resp_ff_len;
+ trace_data = ff_data;
+ trace_data_size = sizeof(ff_data);
+ break;
+ case 5: // Application Issuer Area (block 05)
+ modulated_response = resp_aia;
+ modulated_response_size = resp_aia_len;
+ trace_data = aia_data;
+ trace_data_size = sizeof(aia_data);
+ break;
+ // default: don't respond
+ }
+ } else if (simulationMode == ICLASS_SIM_MODE_FULL) {
+ if (blockNo == 3 || blockNo == 4) { // Kd, Kc, always respond with 0xff bytes
+ modulated_response = resp_ff;
+ modulated_response_size = resp_ff_len;
+ trace_data = ff_data;
+ trace_data_size = sizeof(ff_data);
+ } else { // use data from emulator memory
+ memcpy(data_generic_trace, emulator + 8*blockNo, 8);
+ AppendCrc(data_generic_trace, 8);
+ trace_data = data_generic_trace;
+ trace_data_size = 10;
+ CodeIso15693AsTag(trace_data, trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ }
}
- } else { // use data from emulator memory
- memcpy(data_generic_trace, emulator + (receivedCmd[1] << 3), 8);
- AppendCrc(data_generic_trace, 8);
- trace_data = data_generic_trace;
- trace_data_size = 10;
- CodeIso15693AsTag(trace_data, trace_data_size);
- memcpy(data_response, ToSend, ToSendMax);
- modulated_response = data_response;
- modulated_response_size = ToSendMax;
}
- } else if (receivedCmd[0] == ICLASS_CMD_SELECT) {
- // Reader selects anticollission CSN.
- // Tag sends the corresponding real CSN
- modulated_response = resp_csn;
- modulated_response_size = resp_csn_len;
- trace_data = csn_data;
- trace_data_size = sizeof(csn_data);
-
- } else if (receivedCmd[0] == ICLASS_CMD_READCHECK_KD
- || receivedCmd[0] == ICLASS_CMD_READCHECK_KC) {
+ } else if ((receivedCmd[0] == ICLASS_CMD_READCHECK_KD
+ || receivedCmd[0] == ICLASS_CMD_READCHECK_KC) && len == 2) {
// Read e-purse (88 02 || 18 02)
- modulated_response = resp_cc;
- modulated_response_size = resp_cc_len;
- trace_data = card_challenge_data;
- trace_data_size = sizeof(card_challenge_data);
- LED_B_ON();
+ if (chip_state == SELECTED) {
+ modulated_response = resp_cc;
+ modulated_response_size = resp_cc_len;
+ trace_data = card_challenge_data;
+ trace_data_size = sizeof(card_challenge_data);
+ LED_B_ON();
+ }
- } else if (receivedCmd[0] == ICLASS_CMD_CHECK) {
+ } else if (receivedCmd[0] == ICLASS_CMD_CHECK && len == 9) {
// Reader random and reader MAC!!!
- if (simulationMode == ICLASS_SIM_MODE_FULL) {
- //NR, from reader, is in receivedCmd+1
- opt_doTagMAC_2(cipher_state, receivedCmd+1, data_generic_trace, diversified_key);
+ if (chip_state == SELECTED) {
+ if (simulationMode == ICLASS_SIM_MODE_FULL) {
+ //NR, from reader, is in receivedCmd+1
+ opt_doTagMAC_2(cipher_state, receivedCmd+1, data_generic_trace, diversified_key);
+ trace_data = data_generic_trace;
+ trace_data_size = 4;
+ CodeIso15693AsTag(trace_data, trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ //exitLoop = true;
+ } else { // Not fullsim, we don't respond
+ // We do not know what to answer, so lets keep quiet
+ if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) {
+ if (reader_mac_buf != NULL) {
+ // save NR and MAC for sim 2,4
+ memcpy(reader_mac_buf + 8, receivedCmd + 1, 8);
+ }
+ exitLoop = true;
+ }
+ }
+ }
+
+ } else if (receivedCmd[0] == ICLASS_CMD_HALT && len == 1) {
+ if (chip_state == SELECTED) {
+ // Reader ends the session
+ chip_state = HALTED;
+ }
+
+ } else if (simulationMode == ICLASS_SIM_MODE_FULL && receivedCmd[0] == ICLASS_CMD_READ4 && len == 4) { // 0x06
+ //Read 4 blocks
+ if (chip_state == SELECTED) {
+ memcpy(data_generic_trace, emulator + (receivedCmd[1] << 3), 8 * 4);
+ AppendCrc(data_generic_trace, 8 * 4);
trace_data = data_generic_trace;
- trace_data_size = 4;
+ trace_data_size = 8 * 4 + 2;
CodeIso15693AsTag(trace_data, trace_data_size);
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
modulated_response_size = ToSendMax;
- //exitLoop = true;
- } else { // Not fullsim, we don't respond
- // We do not know what to answer, so lets keep quiet
- if (simulationMode == ICLASS_SIM_MODE_EXIT_AFTER_MAC) {
- if (reader_mac_buf != NULL) {
- // save NR and MAC for sim 2,4
- memcpy(reader_mac_buf + 8, receivedCmd + 1, 8);
- }
- exitLoop = true;
- }
}
- } else if (receivedCmd[0] == ICLASS_CMD_HALT && len == 1) {
- // Reader ends the session
- modulated_response = resp_sof;
- modulated_response_size = 0;
- trace_data = NULL;
- trace_data_size = 0;
-
- } else if (receivedCmd[0] == ICLASS_CMD_UPDATE && simulationMode == ICLASS_SIM_MODE_FULL) {
+ } else if (receivedCmd[0] == ICLASS_CMD_UPDATE && (len == 12 || len == 14)) {
// Probably the reader wants to update the nonce. Let's just ignore that for now.
// OBS! If this is implemented, don't forget to regenerate the cipher_state
// We're expected to respond with the data+crc, exactly what's already in the receivedCmd
// receivedCmd is now UPDATE 1b | ADDRESS 1b | DATA 8b | Signature 4b or CRC 2b
- memcpy(data_generic_trace, receivedCmd + 2, 8);
- AppendCrc(data_generic_trace, 8);
- trace_data = data_generic_trace;
- trace_data_size = 10;
- CodeIso15693AsTag(trace_data, trace_data_size);
- memcpy(data_response, ToSend, ToSendMax);
- modulated_response = data_response;
- modulated_response_size = ToSendMax;
-
- } else if (receivedCmd[0] == ICLASS_CMD_PAGESEL) {
+ if (chip_state == SELECTED) {
+ memcpy(data_generic_trace, receivedCmd + 2, 8);
+ AppendCrc(data_generic_trace, 8);
+ trace_data = data_generic_trace;
+ trace_data_size = 10;
+ CodeIso15693AsTag(trace_data, trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ }
+
+ } else if (receivedCmd[0] == ICLASS_CMD_PAGESEL && len == 4) {
// Pagesel
- // Pagesel enables to select a page in the selected chip memory and return its configuration block
- // Chips with a single page will not answer to this command
- // It appears we're fine ignoring this.
- // Otherwise, we should answer 8bytes (block) + 2bytes CRC
+ if (chip_state == SELECTED) {
+ // Pagesel enables to select a page in the selected chip memory and return its configuration block
+ // Chips with a single page will not answer to this command
+ // It appears we're fine ignoring this.
+ // Otherwise, we should answer 8bytes (block) + 2bytes CRC
+ }
+
+ } else if (receivedCmd[0] == 0x26 && len == 5) {
+ // standard ISO15693 INVENTORY command. Ignore.
} else {
- // Never seen this command before
+ // don't know how to handle this command
char debug_message[250]; // should be enough
sprintf(debug_message, "Unhandled command (len = %d) received from reader:", len);
for (int i = 0; i < len && strlen(debug_message) < sizeof(debug_message) - 3 - 1; i++) {
}
/**
- A legit tag has about 330us delay between reader EOT and tag SOF.
+ A legit tag has about 311,5us delay between reader EOT and tag SOF.
**/
if (modulated_response_size > 0) {
uint32_t response_time = reader_eof_time + DELAY_ISO15693_VCD_TO_VICC_SIM - DELAY_ARM_TO_READER_SIM;
// setup hardware for simulation:
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_NO_MODULATION);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_SIMULATOR | FPGA_HF_SIMULATOR_NO_MODULATION);
FpgaSetupSsc(FPGA_MAJOR_MODE_HF_SIMULATOR);
StartCountSspClk();
datain[i*8+0], datain[i*8+1], datain[i*8+2], datain[i*8+3],
datain[i*8+4], datain[i*8+5], datain[i*8+6], datain[i*8+7]);
Dbprintf("NR,MAC: %02x %02x %02x %02x %02x %02x %02x %02x",
- datain[i*8+ 8], datain[i*8+ 9], datain[i*8+10], datain[i*8+11],
- datain[i*8+12], datain[i*8+13], datain[i*8+14], datain[i*8+15]);
+ mac_responses[i*16+ 8], mac_responses[i*16+ 9], mac_responses[i*16+10], mac_responses[i*16+11],
+ mac_responses[i*16+12], mac_responses[i*16+13], mac_responses[i*16+14], mac_responses[i*16+15]);
+ SpinDelay(100); // give the reader some time to prepare for next CSN
}
cmd_send(CMD_ACK, CMD_SIMULATE_TAG_ICLASS, i, 0, mac_responses, i*16);
} else if (simType == ICLASS_SIM_MODE_FULL) {
if (elapsed) (*elapsed)++;
}
if (AT91C_BASE_SSC->SSC_SR & (AT91C_SSC_RXRDY)) {
- if (c < timeout) {
- c++;
- } else {
- return false;
+ if (c < timeout) {
+ c++;
+ } else {
+ return false;
}
b = (uint8_t)AT91C_BASE_SSC->SSC_RHR;
skip = !skip;
projects / proxmark3-svn / blobdiff