Here you can find the source of swap(byte size, byte[] target, short targetOffset, byte[] a, short aOffset)
public static void swap(byte size, byte[] target, short targetOffset, byte[] a, short aOffset)
//package com.java2s; /*//from w w w.ja v a 2 s . c o m ******************************************************************************* * BTChip Bitcoin Hardware Wallet Java Card implementation * (c) 2013 BTChip - 1BTChip7VfTnrPra5jqci7ejnMguuHogTn * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. ******************************************************************************* */ public class Main { public static void swap(byte size, byte[] target, short targetOffset, byte[] a, short aOffset) { for (byte i = 0; i < size; i++) { target[(short) (targetOffset + size - 1 - i)] = a[(short) (aOffset + i)]; } } }