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//******************************************************************************
//
// File: CryptoUtils.java
// Package: edu.rit.crypto
// Unit: Class edu.rit.crypto.CryptoUtils
//
// This Java source file is copyright (C) 2006 by Alan Kaminsky. All rights
// reserved. For further information, contact the author, Alan Kaminsky, at
// ark@cs.rit.edu.
//
// This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
// software; you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// PJ 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 General Public License for more details.
//
// Linking this library statically or dynamically with other modules is making a
// combined work based on this library. Thus, the terms and conditions of the
// GNU General Public License cover the whole combination.
//
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent modules, and
// to copy and distribute the resulting executable under terms of your choice,
// provided that you also meet, for each linked independent module, the terms
// and conditions of the license of that module. An independent module is a
// module which is not derived from or based on this library. If you modify this
// library, you may extend this exception to your version of the library, but
// you are not obligated to do so. If you do not wish to do so, delete this
// exception statement from your version.
//
// A copy of the GNU General Public License is provided in the file gpl.txt. You
// may also obtain a copy of the GNU General Public License on the World Wide
// Web at http://www.gnu.org/licenses/gpl.html.
//
//******************************************************************************
package edu.rit.crypto;
/**
* Class CryptoUtils contains static cryptographic utility methods.
*
* @author Alan Kaminsky
* @version 05-Apr-2006
*/
public class CryptoUtils
{
// Prevent construction.
private CryptoUtils()
{
}
// Exported operations.
/**
* Erase the given byte array. Every byte is set to 0.
*
* @param theArray Byte array.
*/
public static void erase
(byte[] theArray)
{
int n = theArray == null ? 0 : theArray.length;
for (int i = 0; i < n; ++ i)
{
theArray[i] = (byte) 0;
}
}
/**
* Erase the given character array. Every character is set to 0.
*
* @param theArray Character array.
*/
public static void erase
(char[] theArray)
{
int n = theArray == null ? 0 : theArray.length;
for (int i = 0; i < n; ++ i)
{
theArray[i] = (char) 0;
}
}
/**
* Erase the given integer array. Every integer is set to 0.
*
* @param theArray Integer array.
*/
public static void erase
(int[] theArray)
{
int n = theArray == null ? 0 : theArray.length;
for (int i = 0; i < n; ++ i)
{
theArray[i] = 0;
}
}
/**
* Erase the given long array. Every long is set to 0.
*
* @param theArray Long array.
*/
public static void erase
(long[] theArray)
{
int n = theArray == null ? 0 : theArray.length;
for (int i = 0; i < n; ++ i)
{
theArray[i] = 0L;
}
}
}
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