Failed to send Extended APDU

Question

I have a big byte array (it\'s 320 bytes) on my Java Card and I want to send its data in one APDU response.

So, I implemented ExtendedLength

Answer 1

An unhandled exception was thrown by your applet because you called sendBytes() without calling setOutgoing() and setOutgoingLength() first.

Also, I haven't really counted the length of longData but make sure that its length is a multiple of 32 bytes otherwise Util.arrayCopyNonAtomic() will throw an ArrayIndexOutOfBoundsException and will make your applet throw 6F00.

Maybe you can try it this way:

    apdu.setOutgoing();
    apdu.setOutgoingLength(toSend);
    while (toSend > 0) {
        Util.arrayCopyNonAtomic(longData, (short) (counter * 32), buffer, (short) 0, (short) 32);
        apdu.sendBytes((short) 0, (short) 32);
        toSend = (short) (toSend - 32);
        counter = (byte) (counter + 1);
    }

Or much better, instead of doing a while loop:

    apdu.setOutgoing();
    apdu.setOutgoingLength(toSend);
    apdu.sendBytesLong(longData, (short)0, toSend);