Review

class PassportApduService {
   Apdu createInternalAuthenticateAPDU(byte[] rndIFD) {
      if (rndIFD == null || rndIFD.length != 8) {
         throw new IllegalArgumentException("rndIFD wrong length");
      }
      byte p1 = (byte)0x00;
      byte p2 = (byte)0x00;
      byte[] data = rndIFD;
      int le = 255; /* whatever... */
      Apdu apdu = new Apdu(ISO7816.CLA_ISO7816, ISO7816.INS_INTERNAL_AUTHENTICATE,
            p1, p2, data, le);
      return apdu;
   }

}