/**
 * 使用AES算法生成sessionkey
 */
package src;

import java.security.*;
import javax.crypto.*;

public class AESKey{
	private final static int BIT = 128;
	private KeyGenerator keyGen;
	private Key key;
	
	/**
	 * @version 1.0
	 * default constructure
	 * initialize the keyGen
	 */
	public AESKey() {
		try {
			keyGen = KeyGenerator.getInstance("AES");
			generateKey();
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		}
	}

	private void generateKey() {
		keyGen.init(BIT);
		key = keyGen.generateKey();
	}
	
	public Key getKey(){
		return key;
	}
}