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CHG: "hf 14b sim" making the flow to be similar to "hf 14a sim".

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This commit is contained in:
iceman1001 2016-04-27 19:53:21 +02:00
commit 0923c43cc6
2 changed files with 116 additions and 95 deletions
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199
armsrc/iso14443b.c
View file

@ -484,45 +484,8 @@ static void TransmitFor14443b_AsTag( uint8_t *response, uint16_t len) {
// response to send, and send it. // response to send, and send it.
//----------------------------------------------------------------------------- //-----------------------------------------------------------------------------
void SimulateIso14443bTag(uint32_t pupi) { void SimulateIso14443bTag(uint32_t pupi) {
// the only commands we understand is WUPB, AFI=0, Select All, N=1:
static const uint8_t cmd1[] = { ISO14443B_REQB, 0x00, 0x08, 0x39, 0x73 }; // WUPB
// ... and REQB, AFI=0, Normal Request, N=1:
static const uint8_t cmd2[] = { ISO14443B_REQB, 0x00, 0x00, 0x71, 0xFF }; // REQB
// ... and ATTRIB
static const uint8_t cmd4[] = { ISO14443B_ATTRIB, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; // ATTRIB
// ... if not PUPI/UID is supplied we always respond with ATQB, PUPI = 820de174, Application Data = 0x20381922, ///////////// setup device.
// supports only 106kBit/s in both directions, max frame size = 32Bytes,
// supports ISO14443-4, FWI=8 (77ms), NAD supported, CID not supported:
uint8_t response1[] = {
0x50, 0x82, 0x0d, 0xe1, 0x74, 0x20, 0x38, 0x19, 0x22,
0x00, 0x21, 0x85, 0x5e, 0xd7
};
// response to HLTB and ATTRIB
static const uint8_t response2[] = {0x00, 0x78, 0xF0};
// PUPI/UID supplied
if ( pupi > 0 ) {
uint8_t len = sizeof(response1);
num_to_bytes(pupi, 4, response1+1);
ComputeCrc14443(CRC_14443_B, response1, len-2, response1+len-2, response1+len-1);
//print it..
}
uint16_t len, cmdsRecvd = 0;
uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
uint8_t *resp1Code;
uint8_t *resp2Code;
uint16_t resp1CodeLen, resp2CodeLen;
// uint32_t time_0 = 0;
// uint32_t t2r_time = 0;
// uint32_t r2t_time = 0;
int cardSTATE = MFEMUL_NOFIELD;
int vHf = 0; // in mV
FpgaDownloadAndGo(FPGA_BITSTREAM_HF); FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// allocate command receive buffer // allocate command receive buffer
@ -536,62 +499,105 @@ void SimulateIso14443bTag(uint32_t pupi) {
// Set up the synchronous serial port // Set up the synchronous serial port
FpgaSetupSsc(); FpgaSetupSsc();
/////////////
// prepare the (only one) tag answer: uint16_t len, cmdsReceived = 0;
CodeIso14443bAsTag(response1, sizeof(response1)); int cardSTATE = SIM_NOFIELD;
resp1Code = BigBuf_malloc(ToSendMax); int vHf = 0; // in mV
resp1CodeLen = ToSendMax; // uint32_t time_0 = 0;
memcpy(resp1Code, ToSend, ToSendMax); // uint32_t t2r_time = 0;
// uint32_t r2t_time = 0;
uint8_t *receivedCmd = BigBuf_malloc(MAX_FRAME_SIZE);
// the only commands we understand is WUPB, AFI=0, Select All, N=1:
// static const uint8_t cmdWUPB[] = { ISO14443B_REQB, 0x00, 0x08, 0x39, 0x73 }; // WUPB
// ... and REQB, AFI=0, Normal Request, N=1:
// static const uint8_t cmdREQB[] = { ISO14443B_REQB, 0x00, 0x00, 0x71, 0xFF }; // REQB
// ... and ATTRIB
// static const uint8_t cmdATTRIB[] = { ISO14443B_ATTRIB, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff}; // ATTRIB
// ... if not PUPI/UID is supplied we always respond with ATQB, PUPI = 820de174, Application Data = 0x20381922,
// supports only 106kBit/s in both directions, max frame size = 32Bytes,
// supports ISO14443-4, FWI=8 (77ms), NAD supported, CID not supported:
uint8_t respATQB[] = { 0x50, 0x82, 0x0d, 0xe1, 0x74, 0x20, 0x38, 0x19,
0x22, 0x00, 0x21, 0x85, 0x5e, 0xd7 };
// response to HLTB and ATTRIB
static const uint8_t respOK[] = {0x00, 0x78, 0xF0};
// ...PUPI/UID supplied from user. Adjust ATQB response accordingly
if ( pupi > 0 ) {
num_to_bytes(pupi, 4, respATQB+1);
ComputeCrc14443(CRC_14443_B, respATQB, 12, respATQB+13, respATQB+14);
}
// prepare "ATQB" tag answer (encoded):
CodeIso14443bAsTag(respATQB, sizeof(respATQB));
uint8_t *encodedATQB = BigBuf_malloc(ToSendMax);
uint16_t encodedATQBLen = ToSendMax;
memcpy(encodedATQB, ToSend, ToSendMax);
// prepare the (other) tag answer: // prepare "OK" tag answer (encoded):
CodeIso14443bAsTag(response2, sizeof(response2)); CodeIso14443bAsTag(respOK, sizeof(respOK));
resp2Code = BigBuf_malloc(ToSendMax); uint8_t *encodedOK = BigBuf_malloc(ToSendMax);
resp2CodeLen = ToSendMax; uint16_t encodedOKLen = ToSendMax;
memcpy(resp2Code, ToSend, ToSendMax); memcpy(encodedOK, ToSend, ToSendMax);
// Simulation loop
while (!BUTTON_PRESS() && !usb_poll_validate_length()) { while (!BUTTON_PRESS() && !usb_poll_validate_length()) {
WDT_HIT(); WDT_HIT();
// find reader field // find reader field
if (cardSTATE == MFEMUL_NOFIELD) { if (cardSTATE == SIM_NOFIELD) {
vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10; vHf = (MAX_ADC_HF_VOLTAGE * AvgAdc(ADC_CHAN_HF)) >> 10;
if ( vHf > MF_MINFIELDV ) if ( vHf > MF_MINFIELDV ) {
cardSTATE = MFEMUL_IDLE; cardSTATE = SIM_IDLE;
LED_A_ON();
}
} }
if (cardSTATE == MFEMUL_NOFIELD) continue; if (cardSTATE == SIM_NOFIELD) continue;
// Get reader command
if (!GetIso14443bCommandFromReader(receivedCmd, &len)) { if (!GetIso14443bCommandFromReader(receivedCmd, &len)) {
Dbprintf("button pressed, received %d commands", cmdsRecvd); Dbprintf("button pressed, received %d commands", cmdsReceived);
break; break;
} }
// REQ or WUP request in ANY state and WUP in HALTED state // ISO14443-B protocol states:
if (len == 5 && ( // REQ or WUP request in ANY state
(receivedCmd[0] == ISO14443B_REQB && cardSTATE != MFEMUL_HALTED) || // WUP in HALTED state
receivedCmd[0] == ISO14443A_CMD_WUPA if (len == 5 ) {
) if ( (receivedCmd[0] == ISO14443B_REQB && (receivedCmd[2] & 0x8)== 0x8 && cardSTATE != SIM_HALTED) ||
) { (receivedCmd[0] == ISO14443B_REQB && (receivedCmd[2] & 0x8)== 0) ){
TransmitFor14443b_AsTag( resp1Code, resp1CodeLen );
LogTrace(response1, sizeof(response1), 0, 0, NULL, FALSE); TransmitFor14443b_AsTag( encodedATQB, encodedATQBLen );
cardSTATE = MFEMUL_SELECT1; LogTrace(respATQB, sizeof(respATQB), 0, 0, NULL, FALSE);
continue; cardSTATE = SIM_SELECTING;
} continue;
}
}
/*
* How should this flow go?
* REQB or WUPB
* send response ( waiting for Attrib)
* ATTRIB
* send response ( waiting for commands 7816)
* HALT
send halt response ( waiting for wupb )
*/
if ( (len == 5 && memcmp(receivedCmd, cmd1, len) == 0) || if ( len == 7 && receivedCmd[0] == ISO14443B_HALT ) {
(len == 5 && memcmp(receivedCmd, cmd2, len) == 0) ) { cardSTATE = SIM_HALTED;
//WUPB && REQB } else if ( len == 11 && receivedCmd[0] == ISO14443B_ATTRIB ) {
cardSTATE = MFEMUL_SELECT1; cardSTATE = SIM_ACKNOWLEDGE;
} else if ( len == 7 && receivedCmd[0] == ISO14443B_HALT ) {
cardSTATE = MFEMUL_HALTED;
} else if ( len == sizeof(cmd4) && receivedCmd[0] == ISO14443B_ATTRIB ) {
cardSTATE = MFEMUL_SELECT2;
} else { } else {
// SLOT MARKER command?!? // Todo:
// ISO7816?!? // - SLOT MARKER
Dbprintf("new cmd from reader: len=%d, cmdsRecvd=%d", len, cmdsRecvd); // - ISO7816
// - emulate with a memory dump
Dbprintf("new cmd from reader: len=%d, cmdsRecvd=%d", len, cmdsReceived);
// CRC Check // CRC Check
uint8_t b1, b2; uint8_t b1, b2;
@ -602,38 +608,45 @@ void SimulateIso14443bTag(uint32_t pupi) {
else else
DbpString("CRC passes"); DbpString("CRC passes");
} }
cardSTATE = MFEMUL_IDLE; cardSTATE = SIM_IDLE;
} }
switch(cardSTATE){ switch(cardSTATE){
case MFEMUL_NOFIELD: case SIM_NOFIELD:
case MFEMUL_HALTED: case SIM_HALTED:
case MFEMUL_IDLE:{ case SIM_IDLE:{
LogTrace(receivedCmd, len, 0, 0, NULL, TRUE); LogTrace(receivedCmd, len, 0, 0, NULL, TRUE);
break; break;
} }
case MFEMUL_SELECT1: case SIM_SELECTING: {
TransmitFor14443b_AsTag( resp1Code, resp1CodeLen ); TransmitFor14443b_AsTag( encodedATQB, encodedATQBLen );
LogTrace(response1, sizeof(response1), 0, 0, NULL, FALSE); LogTrace(respATQB, sizeof(respATQB), 0, 0, NULL, FALSE);
cardSTATE = MFEMUL_WORK; cardSTATE = SIM_IDLE;
break; break;
case MFEMUL_SELECT2: }
TransmitFor14443b_AsTag( resp2Code, resp2CodeLen ); case SIM_HALTING: {
LogTrace(response2, sizeof(response2), 0, 0, NULL, FALSE); TransmitFor14443b_AsTag( encodedOK, encodedOKLen );
cardSTATE = MFEMUL_HALTED; LogTrace(respOK, sizeof(respOK), 0, 0, NULL, FALSE);
cardSTATE = SIM_HALTED;
break; break;
case MFEMUL_WORK: }
case SIM_ACKNOWLEDGE:{
TransmitFor14443b_AsTag( encodedOK, encodedOKLen );
LogTrace(respOK, sizeof(respOK), 0, 0, NULL, FALSE);
cardSTATE = SIM_IDLE;
break;
}
default:
break; break;
} }
++cmdsRecvd; ++cmdsReceived;
if(cmdsRecvd > 1000) { if(cmdsReceived > 1000) {
DbpString("14B Simulate, 1000 commands later..."); DbpString("14B Simulate, 1000 commands later...");
break; break;
} }
} }
if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen()); if (MF_DBGLEVEL >= 1) Dbprintf("Emulator stopped. Tracing: %d trace length: %d ", tracing, BigBuf_get_traceLen());
switch_off(); //simulate switch_off(); //simulate
} }

12
armsrc/iso14443b.h
View file

@ -25,11 +25,19 @@
extern void AppendCrc14443b(uint8_t *data, int len); extern void AppendCrc14443b(uint8_t *data, int len);
uint8_t iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *response); void SendRawCommand14443B_Ex(UsbCommand *c);
void iso14443b_setup(); void iso14443b_setup();
uint8_t iso14443b_apdu(uint8_t const *message, size_t message_length, uint8_t *response);
uint8_t iso14443b_select_card(iso14b_card_select_t* card); uint8_t iso14443b_select_card(iso14b_card_select_t* card);
uint8_t iso14443b_select_card_srx(iso14b_card_select_t* card); uint8_t iso14443b_select_card_srx(iso14b_card_select_t* card);
void SendRawCommand14443B_Ex(UsbCommand *c);
#define SIM_NOFIELD 0
#define SIM_IDLE 1
#define SIM_HALTED 2
#define SIM_SELECTING 3
#define SIM_HALTING 4
#define SIM_ACKNOWLEDGE 5
#endif /* __ISO14443B_H */ #endif /* __ISO14443B_H */