Here you can find the source of createUnsignedBigInteger(byte[] data)
public static BigInteger createUnsignedBigInteger(byte[] data)
//package com.java2s; /*/*from w w w . j a v a2 s . c o m*/ * Copyright 2011 by Graz University of Technology, Austria * MOCCA has been developed by the E-Government Innovation Center EGIZ, a joint * initiative of the Federal Chancellery Austria and Graz University of Technology. * * Licensed under the EUPL, Version 1.1 or - as soon they will be approved by * the European Commission - subsequent versions of the EUPL (the "Licence"); * You may not use this work except in compliance with the Licence. * You may obtain a copy of the Licence at: * http://www.osor.eu/eupl/ * * Unless required by applicable law or agreed to in writing, software * distributed under the Licence is distributed on an "AS IS" basis, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the Licence for the specific language governing permissions and * limitations under the Licence. * * This product combines work with different licenses. See the "NOTICE" text * file for details on the various modules and licenses. * The "NOTICE" text file is part of the distribution. Any derivative works * that you distribute must include a readable copy of the "NOTICE" text file. */ import java.math.BigInteger; public class Main { public static BigInteger createUnsignedBigInteger(byte[] data) { byte[] unsigned = new byte[data.length + 1]; unsigned[0] = (byte) 0x00; System.arraycopy(data, 0, unsigned, 1, data.length); return new BigInteger(unsigned); } }