Dbprintf("Done...");
}
+void AppendCrc(uint8_t* data, int len)
+{
+ ComputeCrc14443(CRC_ICLASS,data,len,data+len,data+len+1);
+}
/**
* @brief Does the actual simulation
// free eventually allocated BigBuf memory
BigBuf_free_keep_EM();
+ State cipher_state;
+// State cipher_state_reserve;
uint8_t *csn = BigBuf_get_EM_addr();
uint8_t *emulator = csn;
uint8_t sof_data[] = { 0x0F} ;
ComputeCrc14443(CRC_ICLASS, anticoll_data, 8, &anticoll_data[8], &anticoll_data[9]);
ComputeCrc14443(CRC_ICLASS, csn_data, 8, &csn_data[8], &csn_data[9]);
+ uint8_t diversified_key[8] = { 0 };
// e-Purse
uint8_t card_challenge_data[8] = { 0x00 };
if(simulationMode == MODE_FULLSIM)
{
+ //The diversified key should be stored on block 3
+ //Get the diversified key from emulator memory
+ memcpy(diversified_key, emulator+(8*3),8);
+
//Card challenge, a.k.a e-purse is on block 2
memcpy(card_challenge_data,emulator + (8 * 2) , 8);
+ //Precalculate the cipher state, feeding it the CC
+ cipher_state = opt_doTagMAC_1(card_challenge_data,diversified_key);
+
}
int exitLoop = 0;
int resp_cc_len;
uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
- memset(receivedCmd, 0x44, MAX_FRAME_SIZE);
int len;
// Prepare card messages
memcpy(resp_cc, ToSend, ToSendMax); resp_cc_len = ToSendMax;
//This is used for responding to READ-block commands or other data which is dynamically generated
- uint8_t *data_response = BigBuf_malloc(8 * 2 + 2);
- //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 + 2);
+ //First the 'trace'-data, not encoded for FPGA
+ uint8_t *data_generic_trace = BigBuf_malloc(8 + 2);//8 bytes data + 2byte CRC is max tag answer
+ //Then storage for the modulated data
+ //Each bit is doubled when modulated for FPGA, and we also have SOF and EOF (2 bytes)
+ uint8_t *data_response = BigBuf_malloc( (8+2) * 2 + 2);
// Start from off (no field generated)
//FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LED_A_ON();
bool buttonPressed = false;
-
+ uint8_t response_delay = 1;
while(!exitLoop) {
-
+ response_delay = 1;
LED_B_OFF();
//Signal tracer
// Can be used to get a trigger for an oscilloscope..
} else if(receivedCmd[0] == ICLASS_CMD_CHECK) {
// Reader random and reader MAC!!!
if(simulationMode == MODE_FULLSIM)
- { //This is what we must do..
- //Reader just sent us NR and MAC(k,cc * nr)
- //The diversified key should be stored on block 3
- //However, from a typical dump, the key will not be there
- uint8_t diversified_key[8] = { 0 };
-
- //Get the diversified key from emulator memory
- memcpy(diversified_key, emulator+(8*3),8);
- uint8_t ccnr[12] = { 0 };
- //Put our cc there (block 2)
- memcpy(ccnr, emulator + (8 * 2), 8);
- //Put nr there
- memcpy(ccnr+8, receivedCmd+1,4);
- //Now, calc MAC
- opt_doMAC(ccnr,diversified_key, data_generic_trace);
+ {
+ //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;
CodeIClassTagAnswer(trace_data , trace_data_size);
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
modulated_response_size = ToSendMax;
+ response_delay = 0;//We need to hurry here...
//exitLoop = true;
}else
{ //Not fullsim, we don't respond
} else if(simulationMode == MODE_FULLSIM && receivedCmd[0] == ICLASS_CMD_READ_OR_IDENTIFY && len == 4){
//Read block
uint16_t blk = receivedCmd[1];
- trace_data = emulator+(blk << 3);
- trace_data_size = 8;
+ //Take the data...
+ memcpy(data_generic_trace, emulator+(blk << 3),8);
+ //Add crc
+ AppendCrc(data_generic_trace, 8);
+ trace_data = data_generic_trace;
+ trace_data_size = 10;
+ CodeIClassTagAnswer(trace_data , trace_data_size);
+ memcpy(data_response, ToSend, ToSendMax);
+ modulated_response = data_response;
+ modulated_response_size = ToSendMax;
+ }else if(receivedCmd[0] == ICLASS_CMD_UPDATE && simulationMode == MODE_FULLSIM)
+ {//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|
+
+ //Take the data...
+ memcpy(data_generic_trace, receivedCmd+2,8);
+ //Add crc
+ AppendCrc(data_generic_trace, 8);
+ trace_data = data_generic_trace;
+ trace_data_size = 10;
CodeIClassTagAnswer(trace_data , trace_data_size);
memcpy(data_response, ToSend, ToSendMax);
modulated_response = data_response;
A legit tag has about 380us delay between reader EOT and tag SOF.
**/
if(modulated_response_size > 0) {
- SendIClassAnswer(modulated_response, modulated_response_size, 1);
+ SendIClassAnswer(modulated_response, modulated_response_size, response_delay);
t2r_time = GetCountSspClk();
}
}
}
- memset(receivedCmd, 0x44, MAX_FRAME_SIZE);
}
//Dbprintf("%x", cmdsRecvd);
}
WDT_HIT();
}
- if (samples) *samples = (c + *wait) << 3;
+ if (samples && wait) *samples = (c + *wait) << 3;
}
}
-size_t sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
+bool sendCmdGetResponseWithRetries(uint8_t* command, size_t cmdsize, uint8_t* resp, uint8_t expected_size, uint8_t retries)
{
while(retries-- > 0)
{
ReaderTransmitIClass(command, cmdsize);
if(expected_size == ReaderReceiveIClass(resp)){
- return 0;
+ return true;
}
}
- return 1;//Error
+ return false;//Error
}
/**
* 1 = Got CSN
* 2 = Got CSN and CC
*/
-uint8_t handshakeIclassTag(uint8_t *card_data)
+uint8_t handshakeIclassTag_ext(uint8_t *card_data, bool use_credit_key)
{
static uint8_t act_all[] = { 0x0a };
- static uint8_t identify[] = { 0x0c };
+ //static uint8_t identify[] = { 0x0c };
+ static uint8_t identify[] = { 0x0c, 0x00, 0x73, 0x33 };
static uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
static uint8_t readcheck_cc[]= { 0x88, 0x02 };
+ if (use_credit_key)
+ readcheck_cc[0] = 0x18;
+ else
+ readcheck_cc[0] = 0x88;
+
uint8_t resp[ICLASS_BUFFER_SIZE];
uint8_t read_status = 0;
if(ReaderReceiveIClass(resp) == 8) {
//Save CC (e-purse) in response data
memcpy(card_data+8,resp,8);
-
- //Got both
- read_status = 2;
+ read_status++;
}
return read_status;
}
+uint8_t handshakeIclassTag(uint8_t *card_data){
+ return handshakeIclassTag_ext(card_data, false);
+}
+
// Reader iClass Anticollission
void ReaderIClass(uint8_t arg0) {
- uint8_t card_data[24]={0};
- uint8_t last_csn[8]={0};
+ uint8_t card_data[6 * 8]={0};
+ memset(card_data, 0xFF, sizeof(card_data));
+ uint8_t last_csn[8]={0};
- int read_status= 0;
- bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
- bool get_cc = arg0 & FLAG_ICLASS_READER_GET_CC;
+ //Read conf block CRC(0x01) => 0xfa 0x22
+ uint8_t readConf[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x01, 0xfa, 0x22};
+ //Read conf block CRC(0x05) => 0xde 0x64
+ uint8_t readAA[] = { ICLASS_CMD_READ_OR_IDENTIFY,0x05, 0xde, 0x64};
+
+
+ int read_status= 0;
+ uint8_t result_status = 0;
+ bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
+ bool try_once = arg0 & FLAG_ICLASS_READER_ONE_TRY;
+ bool use_credit_key = false;
+ if (arg0 & FLAG_ICLASS_READER_CEDITKEY)
+ use_credit_key = true;
set_tracing(TRUE);
- setupIclassReader();
-
- size_t datasize = 0;
- while(!BUTTON_PRESS())
- {
+ setupIclassReader();
+ uint16_t tryCnt=0;
+ while(!BUTTON_PRESS())
+ {
+ if (try_once && tryCnt > 5) break;
+ tryCnt++;
if(!tracing) {
DbpString("Trace full");
break;
}
WDT_HIT();
- read_status = handshakeIclassTag(card_data);
+ read_status = handshakeIclassTag_ext(card_data, use_credit_key);
if(read_status == 0) continue;
- if(read_status == 1) datasize = 8;
- if(read_status == 2) datasize = 16;
+ if(read_status == 1) result_status = FLAG_ICLASS_READER_CSN;
+ if(read_status == 2) result_status = FLAG_ICLASS_READER_CSN|FLAG_ICLASS_READER_CC;
+
+ // handshakeIclass returns CSN|CC, but the actual block
+ // layout is CSN|CONFIG|CC, so here we reorder the data,
+ // moving CC forward 8 bytes
+ memcpy(card_data+16,card_data+8, 8);
+ //Read block 1, config
+ if(arg0 & FLAG_ICLASS_READER_CONF)
+ {
+ if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf),card_data+8, 10, 10))
+ {
+ result_status |= FLAG_ICLASS_READER_CONF;
+ } else {
+ Dbprintf("Failed to dump config block");
+ }
+ }
- //Todo, read the public blocks 1,5 aswell:
- //
- // 0 : CSN (we already have)
+ //Read block 5, AA
+ if(arg0 & FLAG_ICLASS_READER_AA){
+ if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA),card_data+(8*4), 10, 10))
+ {
+ result_status |= FLAG_ICLASS_READER_AA;
+ } else {
+ //Dbprintf("Failed to dump AA block");
+ }
+ }
+
+ // 0 : CSN
// 1 : Configuration
- // 2 : e-purse (we already have)
- // (3,4 write-only)
+ // 2 : e-purse
+ // (3,4 write-only, kc and kd)
// 5 Application issuer area
//
//Then we can 'ship' back the 8 * 5 bytes of data,
//Send back to client, but don't bother if we already sent this
if(memcmp(last_csn, card_data, 8) != 0)
{
-
- if(!get_cc || (get_cc && read_status == 2))
+ // If caller requires that we get CC, continue until we got it
+ if( (arg0 & read_status & FLAG_ICLASS_READER_CC) || !(arg0 & FLAG_ICLASS_READER_CC))
{
- cmd_send(CMD_ACK,read_status,0,0,card_data,datasize);
+ cmd_send(CMD_ACK,result_status,0,0,card_data,sizeof(card_data));
if(abort_after_read) {
LED_A_OFF();
return;
//Save that we already sent this....
memcpy(last_csn, card_data, 8);
}
- //If 'get_cc' was specified and we didn't get a CC, we'll just keep trying...
+
}
LED_B_OFF();
- }
- cmd_send(CMD_ACK,0,0,0,card_data, 0);
- LED_A_OFF();
+ }
+ cmd_send(CMD_ACK,0,0,0,card_data, 0);
+ LED_A_OFF();
}
void ReaderIClass_Replay(uint8_t arg0, uint8_t *MAC) {
//for now replay captured auth (as cc not updated)
memcpy(check+5,MAC,4);
- if(sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
+ if(!sendCmdGetResponseWithRetries(check, sizeof(check),resp, 4, 5))
{
Dbprintf("Error: Authentication Fail!");
continue;
read[2] = crc >> 8;
read[3] = crc & 0xff;
- if(sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
+ if(!sendCmdGetResponseWithRetries(read, sizeof(read),resp, 10, 10))
{
Dbprintf("Dump config (block 1) failed");
continue;
read[2] = crc >> 8;
read[3] = crc & 0xff;
- if(!sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
+ if(sendCmdGetResponseWithRetries(read, sizeof(read), resp, 10, 10))
{
Dbprintf(" %02x: %02x %02x %02x %02x %02x %02x %02x %02x",
block, resp[0], resp[1], resp[2],
LED_A_OFF();
}
-//2. Create Read method (cut-down from above) based off responses from 1.
-// Since we have the MAC could continue to use replay function.
-//3. Create Write method
-/*
-void IClass_iso14443A_write(uint8_t arg0, uint8_t blockNo, uint8_t *data, uint8_t *MAC) {
- uint8_t act_all[] = { 0x0a };
- uint8_t identify[] = { 0x0c };
- uint8_t select[] = { 0x81, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- uint8_t readcheck_cc[]= { 0x88, 0x02 };
- uint8_t check[] = { 0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
- uint8_t read[] = { 0x0c, 0x00, 0x00, 0x00 };
- uint8_t write[] = { 0x87, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
-
- uint16_t crc = 0;
-
- uint8_t* resp = (((uint8_t *)BigBuf) + 3560);
-
- // Reset trace buffer
- memset(trace, 0x44, RECV_CMD_OFFSET);
- traceLen = 0;
+void iClass_ReadCheck(uint8_t blockNo, uint8_t keyType) {
+ uint8_t readcheck[] = { keyType, blockNo };
+ uint8_t resp[] = {0,0,0,0,0,0,0,0};
+ size_t isOK = 0;
+ isOK = sendCmdGetResponseWithRetries(readcheck, sizeof(readcheck), resp, sizeof(resp), 6);
+ cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
- // Setup SSC
- FpgaSetupSsc();
- // Start from off (no field generated)
- // Signal field is off with the appropriate LED
- LED_D_OFF();
- FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(200);
+void iClass_Authentication(uint8_t *MAC) {
+ uint8_t check[] = { ICLASS_CMD_CHECK, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ uint8_t resp[ICLASS_BUFFER_SIZE];
+ memcpy(check+5,MAC,4);
+ bool isOK;
+ isOK = sendCmdGetResponseWithRetries(check, sizeof(check), resp, 4, 6);
+ cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
+bool iClass_ReadBlock(uint8_t blockNo, uint8_t *readdata) {
+ uint8_t readcmd[] = {ICLASS_CMD_READ_OR_IDENTIFY, blockNo, 0x00, 0x00}; //0x88, 0x00 // can i use 0C?
+ char bl = blockNo;
+ uint16_t rdCrc = iclass_crc16(&bl, 1);
+ readcmd[2] = rdCrc >> 8;
+ readcmd[3] = rdCrc & 0xff;
+ uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+
+ //readcmd[1] = blockNo;
+ isOK = sendCmdGetResponseWithRetries(readcmd, sizeof(readcmd), resp, 10, 10);
+ memcpy(readdata, resp, sizeof(resp));
+
+ return isOK;
+}
- SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+void iClass_ReadBlk(uint8_t blockno) {
+ uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+ isOK = iClass_ReadBlock(blockno, readblockdata);
+ cmd_send(CMD_ACK, isOK, 0, 0, readblockdata, 8);
+}
- // Now give it time to spin up.
- // Signal field is on with the appropriate LED
- FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
- SpinDelay(200);
+void iClass_Dump(uint8_t blockno, uint8_t numblks) {
+ uint8_t readblockdata[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK = false;
+ uint8_t blkCnt = 0;
- LED_A_ON();
+ BigBuf_free();
+ uint8_t *dataout = BigBuf_malloc(255*8);
+ if (dataout == NULL){
+ Dbprintf("out of memory");
+ OnError(1);
+ return;
+ }
+ memset(dataout,0xFF,255*8);
+
+ for (;blkCnt < numblks; blkCnt++) {
+ isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+ if (!isOK || (readblockdata[0] == 0xBB || readblockdata[7] == 0xBB || readblockdata[2] == 0xBB)) { //try again
+ isOK = iClass_ReadBlock(blockno+blkCnt, readblockdata);
+ if (!isOK) {
+ Dbprintf("Block %02X failed to read", blkCnt+blockno);
+ break;
+ }
+ }
+ memcpy(dataout+(blkCnt*8),readblockdata,8);
+ }
+ //return pointer to dump memory in arg3
+ cmd_send(CMD_ACK,isOK,blkCnt,BigBuf_max_traceLen(),0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
+ BigBuf_free();
+}
- for(int i=0;i<1;i++) {
-
- if(traceLen > TRACE_SIZE) {
- DbpString("Trace full");
- break;
+bool iClass_WriteBlock_ext(uint8_t blockNo, uint8_t *data) {
+ uint8_t write[] = { ICLASS_CMD_UPDATE, blockNo, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 };
+ //uint8_t readblockdata[10];
+ //write[1] = blockNo;
+ memcpy(write+2, data, 12); // data + mac
+ uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
+ bool isOK;
+ isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+ if (isOK) {
+ //Dbprintf("WriteResp: %02X%02X%02X%02X%02X%02X%02X%02X%02X%02X",resp[0],resp[1],resp[2],resp[3],resp[4],resp[5],resp[6],resp[7],resp[8],resp[9]);
+ if (memcmp(write+2,resp,8)) {
+ //error try again
+ isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
}
-
- if (BUTTON_PRESS()) break;
-
- // Send act_all
- ReaderTransmitIClass(act_all, 1);
- // Card present?
- if(ReaderReceiveIClass(resp)) {
- ReaderTransmitIClass(identify, 1);
- if(ReaderReceiveIClass(resp) == 10) {
- // Select card
- memcpy(&select[1],resp,8);
- ReaderTransmitIClass(select, sizeof(select));
-
- if(ReaderReceiveIClass(resp) == 10) {
- Dbprintf(" Selected CSN: %02x %02x %02x %02x %02x %02x %02x %02x",
- resp[0], resp[1], resp[2],
- resp[3], resp[4], resp[5],
- resp[6], resp[7]);
- }
- // Card selected
- Dbprintf("Readcheck on Sector 2");
- ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
- if(ReaderReceiveIClass(resp) == 8) {
- Dbprintf(" CC: %02x %02x %02x %02x %02x %02x %02x %02x",
- resp[0], resp[1], resp[2],
- resp[3], resp[4], resp[5],
- resp[6], resp[7]);
- }else return;
- Dbprintf("Authenticate");
- //for now replay captured auth (as cc not updated)
- memcpy(check+5,MAC,4);
- Dbprintf(" AA: %02x %02x %02x %02x",
- check[5], check[6], check[7],check[8]);
- ReaderTransmitIClass(check, sizeof(check));
- if(ReaderReceiveIClass(resp) == 4) {
- Dbprintf(" AR: %02x %02x %02x %02x",
- resp[0], resp[1], resp[2],resp[3]);
- }else {
- Dbprintf("Error: Authentication Fail!");
- return;
- }
- Dbprintf("Write Block");
-
- //read configuration for max block number
- read_success=false;
- read[1]=1;
- uint8_t *blockno=&read[1];
- crc = iclass_crc16((char *)blockno,1);
- read[2] = crc >> 8;
- read[3] = crc & 0xff;
- while(!read_success){
- ReaderTransmitIClass(read, sizeof(read));
- if(ReaderReceiveIClass(resp) == 10) {
- read_success=true;
- mem=resp[5];
- memory.k16= (mem & 0x80);
- memory.book= (mem & 0x20);
- memory.k2= (mem & 0x8);
- memory.lockauth= (mem & 0x2);
- memory.keyaccess= (mem & 0x1);
-
- }
- }
- if (memory.k16){
- cardsize=255;
- }else cardsize=32;
- //check card_size
-
- memcpy(write+1,blockNo,1);
- memcpy(write+2,data,8);
- memcpy(write+10,mac,4);
- while(!send_success){
- ReaderTransmitIClass(write, sizeof(write));
- if(ReaderReceiveIClass(resp) == 10) {
- write_success=true;
- }
- }//
+ }
+ return isOK;
+}
+
+void iClass_WriteBlock(uint8_t blockNo, uint8_t *data) {
+ bool isOK = iClass_WriteBlock_ext(blockNo, data);
+ if (isOK){
+ Dbprintf("Write block [%02x] successful",blockNo);
+ } else {
+ Dbprintf("Write block [%02x] failed",blockNo);
+ }
+ cmd_send(CMD_ACK,isOK,0,0,0,0);
+}
+
+void iClass_Clone(uint8_t startblock, uint8_t endblock, uint8_t *data) {
+ int i;
+ int written = 0;
+ int total_block = (endblock - startblock) + 1;
+ for (i = 0; i < total_block;i++){
+ // block number
+ if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+ Dbprintf("Write block [%02x] successful",i + startblock);
+ written++;
+ } else {
+ if (iClass_WriteBlock_ext(i+startblock, data+(i*12))){
+ Dbprintf("Write block [%02x] successful",i + startblock);
+ written++;
+ } else {
+ Dbprintf("Write block [%02x] failed",i + startblock);
+ }
}
- WDT_HIT();
}
-
- LED_A_OFF();
-}*/
+ if (written == total_block)
+ Dbprintf("Clone complete");
+ else
+ Dbprintf("Clone incomplete");
+
+ cmd_send(CMD_ACK,1,0,0,0,0);
+ FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
+ LEDsoff();
+}
projects / proxmark3-svn / blobdiff