desedekeygenerator.java

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// Decompiled by Jad v1.5.8e2. Copyright 2001 Pavel Kouznetsov.
// Jad home page: http://kpdus.tripod.com/jad.html
// Decompiler options: packimports(3) fieldsfirst ansi space 
// Source File Name:   DESedeKeyGenerator.java

package org.bouncycastle.crypto.generators;

import java.security.SecureRandom;
import org.bouncycastle.crypto.KeyGenerationParameters;
import org.bouncycastle.crypto.params.DESedeParameters;

// Referenced classes of package org.bouncycastle.crypto.generators:
//			DESKeyGenerator

public class DESedeKeyGenerator extends DESKeyGenerator
{

	public DESedeKeyGenerator()
	{
	}

	public void init(KeyGenerationParameters param)
	{
		super.init(param);
		if (strength == 0 || strength == 21)
			strength = 24;
		else
		if (strength == 14)
			strength = 16;
		else
		if (strength != 24 && strength != 16)
			throw new IllegalArgumentException("DESede key must be 192 or 128 bits long.");
	}

	public byte[] generateKey()
	{
		byte newKey[] = new byte[strength];
		do
		{
			random.nextBytes(newKey);
			DESedeParameters.setOddParity(newKey);
		} while (DESedeParameters.isWeakKey(newKey, 0, newKey.length));
		return newKey;
	}
}