Java Char Array to Byte Array charsToBytes(char[] chars)

Description

Converts chars to bytes without using any external functions that might allocate additional buffers for the potentially sensitive data.

License

Open Source License

Parameter

Parameter	Description
chars	The chars

Return

The bytes

Declaration

public static byte[] charsToBytes(char[] chars) 

Method Source Code

//package com.java2s;
/*/*from   w  w w  . j  a  va2 s.  c  o  m*/
 * ====================
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright 2008-2009 Sun Microsystems, Inc. All rights reserved.
 *
 * The contents of this file are subject to the terms of the Common Development
 * and Distribution License("CDDL") (the "License").  You may not use this file
 * except in compliance with the License.
 *
 * You can obtain a copy of the License at
 * http://opensource.org/licenses/cddl1.php
 * See the License for the specific language governing permissions and limitations
 * under the License.
 *
 * When distributing the Covered Code, include this CDDL Header Notice in each file
 * and include the License file at http://opensource.org/licenses/cddl1.php.
 * If applicable, add the following below this CDDL Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyrighted [year] [name of copyright owner]"
 * ====================
 * Portions Copyrighted 2015 ForgeRock AS.
 */

public class Main {
    /**
     * Converts chars to bytes without using any external functions that might
     * allocate additional buffers for the potentially sensitive data.
     *
     * This guarantees the caller that they only need to cleanup the input and
     * result.
     *
     * @param chars
     *            The chars
     * @return The bytes
     */
    public static byte[] charsToBytes(char[] chars) {
        byte[] bytes = new byte[chars.length * 2];

        for (int i = 0; i < chars.length; i++) {
            char v = chars[i];
            bytes[i * 2] = (byte) (0xff & (v >> 8));
            bytes[i * 2 + 1] = (byte) (0xff & (v));
        }
        return bytes;
    }
}

Related

1. charArrayToByteArray(final char[] message)
2. charArrayToBytes(char[] chars)
3. chars2Bytes(char[] chars)
4. chars2Bytes(char[] chars)
5. charsToBytes(char[] chars)
6. charsToBytes(char[] in)
7. charsToBytes(final char[] chars, final int charOffset, final int length, final byte[] bytes, final int byteOffset)
8. ConvertCharArrayToByteArray(char value[])
9. convertCharsToBytes(char[] chars)