read Card Data - Java javax.smartcardio

Java examples for javax.smartcardio:CardChannel

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Description

read Card Data

Demo Code


//package com.java2s;

import javax.smartcardio.Card;
import javax.smartcardio.CardChannel;
import javax.smartcardio.CardException;
import javax.smartcardio.CommandAPDU;
import javax.smartcardio.ResponseAPDU;

public class Main {
    public static byte[] readData(Card c, byte block) throws CardException {
        byte cla = (byte) 0xFF;
        byte ins = (byte) 0xB0;
        byte p1 = (byte) 0x00;
        byte p2 = block;
        byte le = (byte) 0x10;

        byte[] params = new byte[] { cla, ins, p1, p2, le };
        CardChannel channel = c.getBasicChannel();
        CommandAPDU command = new CommandAPDU(params);
        ResponseAPDU response = channel.transmit(command);
        validateResponse(response);//from w w w . j a  va2  s  .  c  om
        return response.getData();
    }

    private static void validateResponse(ResponseAPDU response)
            throws CardException {
        if (response.getSW1() != 144) {
            throw new CardException(
                    "No fue posible cargar la autenticaci?n");
        }
    }
}

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