#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
if (!AT91C_BASE_PDC_SSC->PDC_RCR) {
AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) dmaBuf;
AT91C_BASE_PDC_SSC->PDC_RCR = DMA_BUFFER_SIZE;
- Dbprintf("RxEmpty ERROR!!! %d", dataLen); // temporary
}
// secondary buffer sets as primary, secondary buffer was stopped
if (!AT91C_BASE_PDC_SSC->PDC_RNCR) {
{
// 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;
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
uint8_t sak = 0x04; // cascade uid
int cascade_level = 0;
int len;
// clear uid
- memset(uid_ptr, 0, 8);
+ memset(uid_ptr, 0, 12);
// 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;
-
+// Dbprintf("atqa: %02x %02x",resp[0],resp[1]);
+
if(resp_data)
memcpy(resp_data->atqa, resp, 2);
// SELECT_ALL
ReaderTransmit(sel_all,sizeof(sel_all));
if (!ReaderReceive(resp)) return 0;
+// Dbprintf("uid: %02x %02x %02x %02x",resp[0],resp[1],resp[2],resp[3]);
+
if(uid_ptr) memcpy(uid_ptr + cascade_level*4, resp, 4);
// calculate crypto UID
resp_data->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];
+ uint32_t arg0;
+ byte_t buf[48];
+
+ 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(buf, (iso14a_card_select_t *)(buf+12), NULL);
+ cmd_send(CMD_ACK,arg0,0,0,buf,48);
+// 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,48);
+// 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,48);
}
if(param & ISO14A_REQUEST_TRIGGER) iso14a_set_trigger(0);
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...
// param:
// bit 0 - trigger from first card answer
// bit 1 - trigger from first reader 7-bit request
-
+
+ // 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.
int8_t *data = dmaBuf;
int maxDataLen = 0;
int dataLen = 0;
-// data = dmaBuf;
// Set up the demodulator for tag -> reader responses.
Demod.output = receivedResponse;
LED_D_OFF();
FpgaWriteConfWord(FPGA_MAJOR_MODE_HF_ISO14443A | FPGA_HF_ISO14443A_SNIFFER);
SetAdcMuxFor(GPIO_MUXSEL_HIPKD);
+
+ // init sniffer
+ MfSniffInit();
+ int sniffCounter = 0;
- // Count of samples received so far, so that we can include timing
- // information in the trace buffer.
- rsamples = 0;
// And now we loop, receiving samples.
while(true) {
if(BUTTON_PRESS()) {
LED_A_ON();
WDT_HIT();
+
+ if (++sniffCounter > 65) {
+ if (MfSniffSend(2000)) {
+ FpgaEnableSscDma();
+ }
+ sniffCounter = 0;
+ }
int register readBufDataP = data - dmaBuf;
int register dmaBufDataP = DMA_BUFFER_SIZE - AT91C_BASE_PDC_SSC->PDC_RCR;
if (!AT91C_BASE_PDC_SSC->PDC_RCR) {
AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) dmaBuf;
AT91C_BASE_PDC_SSC->PDC_RCR = DMA_BUFFER_SIZE;
- Dbprintf("RxEmpty ERROR!!! %d", dataLen); // temporary
+ Dbprintf("RxEmpty ERROR!!! data length:%d", dataLen); // temporary
}
// secondary buffer sets as primary, secondary buffer was stopped
if (!AT91C_BASE_PDC_SSC->PDC_RNCR) {
LED_A_OFF();
- rsamples += 4;
if(MillerDecoding((data[0] & 0xF0) >> 4)) {
- LED_C_ON();
+ LED_C_INV();
// check - if there is a short 7bit request from reader
- if ((Uart.byteCnt == 1) && (Uart.bitCnt = 9)) {
-
- }
- if (!LogTrace(receivedCmd, Uart.byteCnt, 0 - Uart.samples, Uart.parityBits, TRUE)) break;
+ if (MfSniffLogic(receivedCmd, Uart.byteCnt, Uart.parityBits, Uart.bitCnt, TRUE)) break;
/* And ready to receive another command. */
Uart.state = STATE_UNSYNCD;
- /* And also reset the demod code, which might have been */
- /* false-triggered by the commands from the reader. */
+
+ /* And also reset the demod code */
Demod.state = DEMOD_UNSYNCD;
- LED_B_OFF();
}
if(ManchesterDecoding(data[0] & 0x0F)) {
- LED_B_ON();
+ LED_C_INV();
- if (!LogTrace(receivedResponse, Demod.len, 0 - Demod.samples, Demod.parityBits, FALSE)) break;
+ if (MfSniffLogic(receivedResponse, Demod.len, Demod.parityBits, Demod.bitCount, FALSE)) break;
// And ready to receive another response.
memset(&Demod, 0, sizeof(Demod));
Demod.output = receivedResponse;
Demod.state = DEMOD_UNSYNCD;
- LED_C_OFF();
+
+ /* And also reset the uart code */
+ Uart.state = STATE_UNSYNCD;
}
data++;
DbpString("COMMAND FINISHED");
done:
- AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS;
- Dbprintf("maxDataLen=%x, Uart.state=%x, Uart.byteCnt=%x", maxDataLen, Uart.state, Uart.byteCnt);
- Dbprintf("Uart.byteCntMax=%x, traceLen=%x, Uart.output[0]=%x", Uart.byteCntMax, traceLen, (int)Uart.output[0]);
+ FpgaDisableSscDma();
+ MfSniffEnd();
+
+ Dbprintf("maxDataLen=%x, Uart.state=%x, Uart.byteCnt=%x Uart.byteCntMax=%x", maxDataLen, Uart.state, Uart.byteCnt, Uart.byteCntMax);
LEDsoff();
}
\ No newline at end of file
projects / proxmark3-svn / blobdiff