#include "apps.h"
#include "util.h"
#include "string.h"
+#include "cmd.h"
#include "iso14443crc.h"
#include "iso14443a.h"
#include "mifareutil.h"
static uint32_t iso14a_timeout;
-uint8_t *trace = (uint8_t *) BigBuf;
+uint8_t *trace = (uint8_t *) BigBuf+TRACE_OFFSET;
int traceLen = 0;
int rsamples = 0;
int tracing = TRUE;
uint8_t trigger = 0;
+// the block number for the ISO14443-4 PCB
+static uint8_t iso14_pcb_blocknum = 0;
// CARD TO READER - manchester
// Sequence D: 11110000 modulation with subcarrier during first half
};
-void iso14a_set_trigger(int enable) {
+void iso14a_set_trigger(bool enable) {
trigger = enable;
}
-void iso14a_clear_tracelen(void) {
+void iso14a_clear_trace() {
+ memset(trace, 0x44, TRACE_SIZE);
traceLen = 0;
}
-void iso14a_set_tracing(int enable) {
+
+void iso14a_set_tracing(bool enable) {
tracing = enable;
}
+void iso14a_set_timeout(uint32_t timeout) {
+ iso14a_timeout = timeout;
+}
+
//-----------------------------------------------------------------------------
// Generate the parity value for a byte sequence
//
LEDsoff();
// init trace buffer
- traceLen = 0;
- memset(trace, 0x44, TRACE_SIZE);
+ iso14a_clear_trace();
// We won't start recording the frames that we acquire until we trigger;
// a good trigger condition to get started is probably when we see a
{
// Enable and clear the trace
tracing = TRUE;
- traceLen = 0;
- memset(trace, 0x44, TRACE_SIZE);
+ iso14a_clear_trace();
// This function contains the tag emulation
uint8_t sak;
respdata = &nack;
respsize = sizeof(nack); // 4-bit answer
} else if(receivedCmd[0] == 0x50) { // Received a HALT
- DbpString("Reader requested we HALT!:");
+// DbpString("Reader requested we HALT!:");
// Do not respond
resp = resp1; respLen = 0; order = 0;
respdata = NULL;
respdata = response6;
respsize = sizeof(response6);
} else {
- // Never seen this command before
- Dbprintf("Received (len=%d): %02x %02x %02x %02x %02x %02x %02x %02x %02x",
- len,
- receivedCmd[0], receivedCmd[1], receivedCmd[2],
- receivedCmd[3], receivedCmd[4], receivedCmd[5],
- receivedCmd[6], receivedCmd[7], receivedCmd[8]);
- // Do not respond
- resp = resp1; respLen = 0; order = 0;
- respdata = NULL;
- respsize = 0;
+ if (order == 7 && len ==8) {
+ uint32_t nr = bytes_to_num(receivedCmd,4);
+ uint32_t ar = bytes_to_num(receivedCmd+4,4);
+ Dbprintf("Auth attempt {nr}{ar}: %08x %08x",nr,ar);
+ } else {
+ // Never seen this command before
+ Dbprintf("Received unknown command (len=%d):",len);
+ Dbhexdump(len,receivedCmd,false);
+ }
+ // Do not respond
+ resp = resp1; respLen = 0; order = 0;
+ respdata = NULL;
+ respsize = 0;
}
// Count number of wakeups received after a halt
/* performs iso14443a anticolision procedure
* fills the uid pointer unless NULL
* fills resp_data unless NULL */
-int iso14443a_select_card(uint8_t * uid_ptr, iso14a_card_select_t * resp_data, uint32_t * cuid_ptr) {
+int iso14443a_select_card(byte_t* uid_ptr, iso14a_card_select_t* p_hi14a_card, uint32_t* cuid_ptr) {
uint8_t wupa[] = { 0x52 }; // 0x26 - REQA 0x52 - WAKE-UP
uint8_t sel_all[] = { 0x93,0x20 };
uint8_t sel_uid[] = { 0x93,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
uint8_t rats[] = { 0xE0,0x80,0x00,0x00 }; // FSD=256, FSDI=8, CID=0
-
- uint8_t* resp = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes
+ uint8_t* resp = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET); // was 3560 - tied to other size changes
+ byte_t uid_resp[4];
+ size_t uid_resp_len;
uint8_t sak = 0x04; // cascade uid
int cascade_level = 0;
-
int len;
-
- // clear uid
- memset(uid_ptr, 0, 8);
-
+
// Broadcast for a card, WUPA (0x52) will force response from all cards in the field
ReaderTransmitShort(wupa);
// Receive the ATQA
if(!ReaderReceive(resp)) return 0;
-
- if(resp_data)
- memcpy(resp_data->atqa, resp, 2);
+// Dbprintf("atqa: %02x %02x",resp[0],resp[1]);
+
+ if(p_hi14a_card) {
+ memcpy(p_hi14a_card->atqa, resp, 2);
+ p_hi14a_card->uidlen = 0;
+ memset(p_hi14a_card->uid,0,10);
+ }
+ // clear uid
+ if (uid_ptr) {
+ memset(uid_ptr,0,10);
+ }
+
// OK we will select at least at cascade 1, lets see if first byte of UID was 0x88 in
// which case we need to make a cascade 2 request and select - this is a long UID
// While the UID is not complete, the 3nd bit (from the right) is set in the SAK.
// SELECT_ALL
ReaderTransmit(sel_all,sizeof(sel_all));
if (!ReaderReceive(resp)) return 0;
- if(uid_ptr) memcpy(uid_ptr + cascade_level*4, resp, 4);
-
+
+ // First backup the current uid
+ memcpy(uid_resp,resp,4);
+ uid_resp_len = 4;
+ // Dbprintf("uid: %02x %02x %02x %02x",uid_resp[0],uid_resp[1],uid_resp[2],uid_resp[3]);
+
// calculate crypto UID
- if(cuid_ptr) *cuid_ptr = bytes_to_num(resp, 4);
+ if(cuid_ptr) {
+ *cuid_ptr = bytes_to_num(uid_resp, 4);
+ }
// Construct SELECT UID command
memcpy(sel_uid+2,resp,5);
// Receive the SAK
if (!ReaderReceive(resp)) return 0;
sak = resp[0];
+
+ // Test if more parts of the uid are comming
+ if ((sak & 0x04) && uid_resp[0] == 0x88) {
+ // Remove first byte, 0x88 is not an UID byte, it CT, see page 3 of:
+ // http://www.nxp.com/documents/application_note/AN10927.pdf
+ memcpy(uid_ptr, uid_ptr + 1, 3);
+ uid_resp_len = 3;
+ }
+
+ if(uid_ptr) {
+ memcpy(uid_ptr + (cascade_level*3), uid_resp, uid_resp_len);
+ }
+
+ if(p_hi14a_card) {
+ memcpy(p_hi14a_card->uid + (cascade_level*3), uid_resp, uid_resp_len);
+ p_hi14a_card->uidlen += uid_resp_len;
+ }
}
- if(resp_data) {
- resp_data->sak = sak;
- resp_data->ats_len = 0;
- }
- //-- this byte not UID, it CT. http://www.nxp.com/documents/application_note/AN10927.pdf page 3
- if (uid_ptr[0] == 0x88) {
- memcpy(uid_ptr, uid_ptr + 1, 7);
- uid_ptr[7] = 0;
+
+ if(p_hi14a_card) {
+ p_hi14a_card->sak = sak;
+ p_hi14a_card->ats_len = 0;
}
- if( (sak & 0x20) == 0)
+ if( (sak & 0x20) == 0) {
return 2; // non iso14443a compliant tag
+ }
// Request for answer to select
- if(resp_data) { // JCOP cards - if reader sent RATS then there is no MIFARE session at all!!!
- AppendCrc14443a(rats, 2);
- ReaderTransmit(rats, sizeof(rats));
-
- if (!(len = ReaderReceive(resp))) return 0;
-
- memcpy(resp_data->ats, resp, sizeof(resp_data->ats));
- resp_data->ats_len = len;
+ AppendCrc14443a(rats, 2);
+ ReaderTransmit(rats, sizeof(rats));
+
+ if (!(len = ReaderReceive(resp))) return 0;
+
+ if(p_hi14a_card) {
+ memcpy(p_hi14a_card->ats, resp, sizeof(p_hi14a_card->ats));
+ p_hi14a_card->ats_len = len;
}
+ // reset the PCB block number
+ iso14_pcb_blocknum = 0;
return 1;
}
void iso14443a_setup() {
- // Setup SSC
- FpgaSetupSsc();
+ // Set up the synchronous serial port
+ 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);
+ SpinDelay(50);
SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
// Signal field is on with the appropriate LED
LED_D_ON();
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
- SpinDelay(200);
+ SpinDelay(50);
iso14a_timeout = 2048; //default
}
int iso14_apdu(uint8_t * cmd, size_t cmd_len, void * data) {
uint8_t real_cmd[cmd_len+4];
real_cmd[0] = 0x0a; //I-Block
+ // put block number into the PCB
+ real_cmd[0] |= iso14_pcb_blocknum;
real_cmd[1] = 0x00; //CID: 0 //FIXME: allow multiple selected cards
memcpy(real_cmd+2, cmd, cmd_len);
AppendCrc14443a(real_cmd,cmd_len+2);
ReaderTransmit(real_cmd, cmd_len+4);
size_t len = ReaderReceive(data);
- if(!len)
- return -1; //DATA LINK ERROR
-
+ uint8_t * data_bytes = (uint8_t *) data;
+ if (!len)
+ return 0; //DATA LINK ERROR
+ // if we received an I- or R(ACK)-Block with a block number equal to the
+ // current block number, toggle the current block number
+ else if (len >= 4 // PCB+CID+CRC = 4 bytes
+ && ((data_bytes[0] & 0xC0) == 0 // I-Block
+ || (data_bytes[0] & 0xD0) == 0x80) // R-Block with ACK bit set to 0
+ && (data_bytes[0] & 0x01) == iso14_pcb_blocknum) // equal block numbers
+ {
+ iso14_pcb_blocknum ^= 1;
+ }
+
return len;
}
-
//-----------------------------------------------------------------------------
// Read an ISO 14443a tag. Send out commands and store answers.
//
//-----------------------------------------------------------------------------
-void ReaderIso14443a(UsbCommand * c, UsbCommand * ack)
+void ReaderIso14443a(UsbCommand * c)
{
iso14a_command_t param = c->arg[0];
uint8_t * cmd = c->d.asBytes;
size_t len = c->arg[1];
-
- if(param & ISO14A_REQUEST_TRIGGER) iso14a_set_trigger(1);
+ uint32_t arg0 = 0;
+ byte_t buf[USB_CMD_DATA_SIZE];
+
+ iso14a_clear_trace();
+ iso14a_set_tracing(true);
+
+ if(param & ISO14A_REQUEST_TRIGGER) {
+ iso14a_set_trigger(1);
+ }
if(param & ISO14A_CONNECT) {
iso14443a_setup();
- ack->arg[0] = iso14443a_select_card(ack->d.asBytes, (iso14a_card_select_t *) (ack->d.asBytes+12), NULL);
- UsbSendPacket((void *)ack, sizeof(UsbCommand));
+ arg0 = iso14443a_select_card(NULL,(iso14a_card_select_t*)buf,NULL);
+ cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(iso14a_card_select_t));
+// UsbSendPacket((void *)ack, sizeof(UsbCommand));
}
if(param & ISO14A_SET_TIMEOUT) {
}
if(param & ISO14A_APDU) {
- ack->arg[0] = iso14_apdu(cmd, len, ack->d.asBytes);
- UsbSendPacket((void *)ack, sizeof(UsbCommand));
+ arg0 = iso14_apdu(cmd, len, buf);
+ cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
+// UsbSendPacket((void *)ack, sizeof(UsbCommand));
}
if(param & ISO14A_RAW) {
len += 2;
}
ReaderTransmit(cmd,len);
- ack->arg[0] = ReaderReceive(ack->d.asBytes);
- UsbSendPacket((void *)ack, sizeof(UsbCommand));
+ arg0 = ReaderReceive(buf);
+// UsbSendPacket((void *)ack, sizeof(UsbCommand));
+ cmd_send(CMD_ACK,arg0,0,0,buf,sizeof(buf));
}
- if(param & ISO14A_REQUEST_TRIGGER) iso14a_set_trigger(0);
+ if(param & ISO14A_REQUEST_TRIGGER) {
+ iso14a_set_trigger(0);
+ }
- if(param & ISO14A_NO_DISCONNECT)
+ if(param & ISO14A_NO_DISCONNECT) {
return;
+ }
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
LEDsoff();
}
+
//-----------------------------------------------------------------------------
// Read an ISO 14443a tag. Send out commands and store answers.
//
uint8_t mf_auth[] = { 0x60,0x00,0xf5,0x7b };
uint8_t mf_nr_ar[] = { 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00 };
- uint8_t* receivedAnswer = (((uint8_t *)BigBuf) + 3560); // was 3560 - tied to other size changes
+ uint8_t* receivedAnswer = (((uint8_t *)BigBuf) + FREE_BUFFER_OFFSET); // was 3560 - tied to other size changes
traceLen = 0;
tracing = false;
while(TRUE)
{
- LED_C_ON();
+ LED_C_OFF();
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
- SpinDelay(200);
+ SpinDelay(50);
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_READER_MOD);
- LED_C_OFF();
+ LED_C_ON();
+ SpinDelay(2);
// Test if the action was cancelled
if(BUTTON_PRESS()) {
LogTrace(par_list, 8, 0, GetParity(par_list, 8), TRUE);
LogTrace(ks_list, 8, 0, GetParity(ks_list, 8), TRUE);
- UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
- memcpy(ack.d.asBytes + 0, uid, 4);
- memcpy(ack.d.asBytes + 4, nt, 4);
- memcpy(ack.d.asBytes + 8, par_list, 8);
- memcpy(ack.d.asBytes + 16, ks_list, 8);
+ byte_t buf[48];
+// UsbCommand ack = {CMD_ACK, {isOK, 0, 0}};
+ memcpy(buf + 0, uid, 4);
+ memcpy(buf + 4, nt, 4);
+ memcpy(buf + 8, par_list, 8);
+ memcpy(buf + 16, ks_list, 8);
LED_B_ON();
- UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
+ cmd_send(CMD_ACK,isOK,0,0,buf,48);
+// UsbSendPacket((uint8_t *)&ack, sizeof(UsbCommand));
LED_B_OFF();
// Thats it...
// C(red) A(yellow) B(green)
LEDsoff();
// init trace buffer
- traceLen = 0;
- memset(trace, 0x44, TRACE_SIZE);
+ iso14a_clear_trace();
// The command (reader -> tag) that we're receiving.
// The length of a received command will in most cases be no more than 18 bytes.
if(MillerDecoding((data[0] & 0xF0) >> 4)) {
LED_C_INV();
// check - if there is a short 7bit request from reader
- if (MfSniffLogic(receivedCmd, Uart.byteCnt, Uart.bitCnt, TRUE)) break;
+ if (MfSniffLogic(receivedCmd, Uart.byteCnt, Uart.parityBits, Uart.bitCnt, TRUE)) break;
/* And ready to receive another command. */
Uart.state = STATE_UNSYNCD;
if(ManchesterDecoding(data[0] & 0x0F)) {
LED_C_INV();
- if (MfSniffLogic(receivedResponse, Demod.len, Uart.bitCnt, FALSE)) break;
+ if (MfSniffLogic(receivedResponse, Demod.len, Demod.parityBits, Demod.bitCount, FALSE)) break;
// And ready to receive another response.
memset(&Demod, 0, sizeof(Demod));
projects / proxmark3-svn / blobdiff