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  * Copyright 2012 Mirko Caserta
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this software except in compliance with the License.
  * You may obtain a copy of the License at
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * See the License for the specific language governing permissions and
 * limitations under the License.
package com.springcryptoutils.core.cipher.symmetric;
import  org.springframework.beans.factory.InitializingBean;

The default implementation for generating symmetric encryption keys.

Mirko Caserta (
public class KeyGeneratorImpl implements KeyGenerator, InitializingBean {
	private String algorithm = "DESede";
	private String provider;

Sets the key algorithm. Default is DESede (triple DES).

algorithm the algorithm
	public void setAlgorithm(String algorithm) {
		this. = algorithm;

Sets the provider name of the specific implementation requested (e.g., "BC" for BouncyCastle, "SunJCE" for the default Sun JCE provider).

provider the provider to set
	public void setProvider(String provider) {
		this. = provider;

Generates a new symmetric encryption key.

the new symmetric encryption key
	public byte[] generate() {
		if (( == null) || (.length() == 0)) {
			 = javax.crypto.KeyGenerator.getInstance();
else {
			 = javax.crypto.KeyGenerator.getInstance();
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