#include "string.h"
#include "common.h"
#include "cmd.h"
+#include "iso14443a.h"
// Needed for CRC in emulation mode;
// same construction as in ISO 14443;
// different initial value (CRC_ICLASS)
#include "iso15693tools.h"
#include "protocols.h"
#include "optimized_cipher.h"
+#include "usb_cdc.h" // for usb_poll_validate_length
static int timeout = 4096;
}
WDT_HIT();
}
- if (samples) *samples = (c + *wait) << 3;
+ if (samples && wait) *samples = (c + *wait) << 3;
}
for(j = 0; j < 4; j++) {
for(k = 0; k < 4; k++) {
if(k == (b & 3)) {
- ToSend[++ToSendMax] = 0x0f;
+ ToSend[++ToSendMax] = 0xf0;
}
else {
ToSend[++ToSendMax] = 0x00;
{
FpgaDownloadAndGo(FPGA_BITSTREAM_HF);
// Reset trace buffer
- set_tracing(TRUE);
- clear_trace();
+ set_tracing(TRUE);
+ clear_trace();
// Setup SSC
FpgaSetupSsc();
//Flag that we got to at least stage 1, read CSN
read_status = 1;
- // Card selected, now read e-purse (cc)
+ // Card selected, now read e-purse (cc) (only 8 bytes no CRC)
ReaderTransmitIClass(readcheck_cc, sizeof(readcheck_cc));
if(ReaderReceiveIClass(resp) == 8) {
//Save CC (e-purse) in response data
return read_status;
}
-uint8_t handshakeIclassTag(uint8_t *card_data){
+uint8_t handshakeIclassTag(uint8_t *card_data) {
return handshakeIclassTag_ext(card_data, false);
}
uint8_t card_data[6 * 8]={0};
memset(card_data, 0xFF, sizeof(card_data));
- uint8_t last_csn[8]={0};
-
+ uint8_t last_csn[8]={0,0,0,0,0,0,0,0};
+ uint8_t resp[ICLASS_BUFFER_SIZE];
+ memset(resp, 0xFF, sizeof(resp));
//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
+ //Read App Issuer Area 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;
+ // flag to read until one tag is found successfully
bool abort_after_read = arg0 & FLAG_ICLASS_READER_ONLY_ONCE;
+ // flag to only try 5 times to find one tag then return
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);
+ // if neither abort_after_read nor try_once then continue reading until button pressed.
+
+ bool use_credit_key = arg0 & FLAG_ICLASS_READER_CEDITKEY;
+ // test flags for what blocks to be sure to read
+ uint8_t flagReadConfig = arg0 & FLAG_ICLASS_READER_CONF;
+ uint8_t flagReadCC = arg0 & FLAG_ICLASS_READER_CC;
+ uint8_t flagReadAA = arg0 & FLAG_ICLASS_READER_AA;
+
+ set_tracing(true);
setupIclassReader();
uint16_t tryCnt=0;
- while(!BUTTON_PRESS())
+ bool userCancelled = BUTTON_PRESS() || usb_poll_validate_length();
+ while(!userCancelled)
{
- if (try_once && tryCnt > 5) break;
+ // if only looking for one card try 2 times if we missed it the first time
+ if (try_once && tryCnt > 2) break;
tryCnt++;
if(!tracing) {
DbpString("Trace full");
// 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))
+ if(flagReadConfig) {
+ if(sendCmdGetResponseWithRetries(readConf, sizeof(readConf), resp, 10, 10))
{
result_status |= FLAG_ICLASS_READER_CONF;
+ memcpy(card_data+8, resp, 8);
} else {
Dbprintf("Failed to dump config block");
}
}
//Read block 5, AA
- if(arg0 & FLAG_ICLASS_READER_AA){
- if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA),card_data+(8*4), 10, 10))
+ if(flagReadAA) {
+ if(sendCmdGetResponseWithRetries(readAA, sizeof(readAA), resp, 10, 10))
{
result_status |= FLAG_ICLASS_READER_AA;
+ memcpy(card_data+(8*5), resp, 8);
} else {
//Dbprintf("Failed to dump AA block");
}
// (3,4 write-only, kc and kd)
// 5 Application issuer area
//
- //Then we can 'ship' back the 8 * 5 bytes of data,
+ //Then we can 'ship' back the 8 * 6 bytes of data,
// with 0xFF:s in block 3 and 4.
LED_B_ON();
- //Send back to client, but don't bother if we already sent this
+ //Send back to client, but don't bother if we already sent this -
+ // only useful if looping in arm (not try_once && not abort_after_read)
if(memcmp(last_csn, card_data, 8) != 0)
{
- // 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))
- {
+ // If caller requires that we get Conf, CC, AA, continue until we got it
+ if( (result_status ^ FLAG_ICLASS_READER_CSN ^ flagReadConfig ^ flagReadCC ^ flagReadAA) == 0) {
cmd_send(CMD_ACK,result_status,0,0,card_data,sizeof(card_data));
if(abort_after_read) {
LED_A_OFF();
+ LED_B_OFF();
return;
}
//Save that we already sent this....
}
LED_B_OFF();
+ userCancelled = BUTTON_PRESS() || usb_poll_validate_length();
+ }
+ if (userCancelled) {
+ cmd_send(CMD_ACK,0xFF,0,0,card_data, 0);
+ } else {
+ cmd_send(CMD_ACK,0,0,0,card_data, 0);
}
- cmd_send(CMD_ACK,0,0,0,card_data, 0);
LED_A_OFF();
}
}
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 write[] = { ICLASS_CMD_UPDATE, blockNo, 0x00, 0x00, 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
+ char *wrCmd = (char *)(write+1);
+ uint16_t wrCrc = iclass_crc16(wrCmd, 13);
+ write[14] = wrCrc >> 8;
+ write[15] = wrCrc & 0xff;
uint8_t resp[] = {0,0,0,0,0,0,0,0,0,0};
- bool isOK;
+ bool isOK = false;
+
isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
- if (isOK) {
+ if (isOK) { //if reader responded correctly
//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 (memcmp(write+2,resp,8)) { //if response is not equal to write values
+ if (blockNo != 3 && blockNo != 4) { //if not programming key areas (note key blocks don't get programmed with actual key data it is xor data)
+ //error try again
+ isOK = sendCmdGetResponseWithRetries(write,sizeof(write),resp,sizeof(resp),10);
+ }
+
}
}
return isOK;
projects / proxmark3-svn / blobdiff