I wrote a program using java card that allows me to read some data from a smartcard. The file system of the card is structured as follows:
The smart card is a card of the Italian public administration.
I can correctly connect to the card, send the data reading command to the path MF/DF1/EF_Dati_Personali path by running this code.
When I try to enter the DF2/Dati_personali_aggiuntivi I can not find any data despite they are present.
According to the reference guide, to access the DF1 and DF2 areas, the sectors are as follows:
Below is the code I wrote. Code is commented at line to get data in order to identify problem.
Can someone kindly tell me where I'm wrong? Every suggestion is appreciated. thanks a lot
package smartcard;
import java.io.IOException;
import static java.lang.System.out;
import java.util.List;
import javax.smartcardio.ATR;
import javax.smartcardio.Card;
import javax.smartcardio.CardChannel;
import javax.smartcardio.CardException;
import javax.smartcardio.CardTerminal;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;
import javax.smartcardio.TerminalFactory;
import javax.swing.JOptionPane;
public class SmartCard {
/**
* @param args the command line arguments
*/
public static void main(String[] args) throws CardException, IOException {
try {
TerminalFactory factory = TerminalFactory.getDefault();
List<CardTerminal> terminals = factory.terminals().list();
System.out.println("Terminals: " + terminals);
// Use the first terminal
CardTerminal terminal = terminals.get(0);
// Connect wit hthe card
Card card = terminal.connect("*");
System.out.println("card: " + card);
CardChannel channel = card.getBasicChannel();
//GET ATR
ATR atr = card.getATR();
byte[] ATR = atr.getBytes();
System.out.println("Card ATR: " + bytesToHex(ATR));
// // originale
//GET SELECT_FILE_APDU
byte[] READ_BINARY_APDU = {(byte) 0x00, (byte) 0xB0, (byte) 0x00, (byte) 0x00, (byte) 0xff};
byte[] dati_personali = {(byte) 0x00, (byte) 0xA4, (byte) 0x08, (byte) 0x00, (byte) 0x04, (byte) 0x11, (byte) 0x00, (byte) 0x11, (byte) 0x02, (byte) 0x00};
// Whit this String I can correctly read DF1 Data of CNS (Carta Nazionale servizi)
// This should be the string for get DF2 data but I cannot find anything.
byte[] dati_personali_aggiuntivi = {(byte) 0x00, (byte) 0xA4, (byte) 0x08, (byte) 0x00, (byte) 0x04, (byte) 0x12, (byte) 0x00, (byte) 0x12, (byte) 0x01, (byte) 0x00};
String dati_personali_string = richiedi(channel, READ_BINARY_APDU, dati_personali, "<b>Dati personali:</b><br>");
String dati_personali_aggiuntivi_string = richiedi(channel, READ_BINARY_APDU, dati_personali_aggiuntivi, "<b>Dati personali aggiuntivi:</b><br>");
JOptionPane.showMessageDialog(null,"dati personali: "+ dati_personali_string, "Dati personali",JOptionPane.INFORMATION_MESSAGE);
JOptionPane.showMessageDialog(null,"dati personali agiguntivi: "+ dati_personali_aggiuntivi_string, "Dati personali aggiuntivi",JOptionPane.INFORMATION_MESSAGE);
// Disconnect the card
card.disconnect(false);
System.out.println("DISCONEESSO ");
} catch (Exception e) {
System.out.println("Ouch: " + e.toString());
}
}
public static String richiedi(CardChannel channel, byte[] read, byte[] select, String titolo) throws CardException {
out.println(titolo);
// Send Select Applet command
ResponseAPDU answer = channel.transmit(new CommandAPDU(select));
// Send test command
answer = channel.transmit(new CommandAPDU(read));
byte r[] = answer.getData();
String test = "";
for (int i = 0; i < r.length; i++) {
test += (char) r[i];
}
System.out.print(test);
out.println(test);
out.println("<br><br>");
return test;
}
public static String bytesToHex(byte[] bytes) {
StringBuilder sb = new StringBuilder(bytes.length * 2);
for (int i = 0; i < bytes.length; i++) {
sb.append(String.format("%02x", bytes[i]));
}
return sb.toString();
}
}
UPDATE APDU tracing
REQUEST: Dati personali:
read command: >>> 00b00000ff
select command: >>> 00a40800041100110200
RESPONSE: Dati personali:
<<< answer from CNS: 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
_____________________
REQUEST: Dati personali aggiuntivi:
read command: >>> 00b00000ff
select command: >>> 00a40800041200120100
RESPONSE: Dati personali aggiuntivi:
<<< answer from CNS: 000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000009000
