Sending a byte array of greater length than the APDU data buffer

Question

Hello again, I am now trying to send a byte array of length 480 from the smart card. I've tried setting the outgoing length to 480 first but as i had expected, this threw an exception. Then i tried setting it to 240 and then copying from the array into the apdu buffer in two halves and calling sendBytes() twice, but this only worked the first time - it send the first 240 bytes and then threw an error. Is it possible to do what i am trying to accomplish? If so, what am I missing?

Answer 1

the applet:
H:\java_card_kit-2_2_1-win-dom\java_card_kit-2_2_1\samples\src\com\sun\javacard\samples\photocard
the client:
H:\java_card_kit-2_2_1-win-dom\java_card_kit-2_2_1\samples\src_client\com\sun\javacard\clientsamples\photocardclient
here is the code i have used to store large data on card. maybe it will help you.
i send a series of apdu, where each contains 128 bytes of data (all apdu must have the same length - except the last).
public void writeAPDU(APDU apdu)
     byte[] buffer = apdu.getBuffer();
     short lc = (short)(buffer[ISO7816.OFFSET_LC]&0xFF);          
     short p1 = (short)(buffer[ISO7816.OFFSET_P1]&0xFF); // counter
     short p2 = (short)(buffer[ISO7816.OFFSET_P2]&0xFF); // length of send data
     short offset = (short)(p1 * p2); // calculate the offset
     apdu.setIncomingAndReceive();
     // check for first apdu (contains the total size of data)
     if(p1 == 0 && p2 == 0)
          short l = Util.getShort(buffer,ISO7816.OFFSET_CDATA);
          data = new byte[l];
     else
          // store bytes in array
          Util.arrayCopy(buffer, ISO7816.OFFSET_CDATA, data, offset, lc);
}