AES加密java程序

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import javax.crypto.Cipher;
import javax.crypto.KeyGenerator;
import java.security.Key;
import java.security.SecureRandom;

/**
 *  *AES加密解密工具類
 *  *@author
 *  
 */
public class AESUtil {

    public static String CIPHER_ALGORITHM = "AES"; // optional value AES/DES/DESede

    public static Key getKey(String strKey) {
        try {
            if (strKey == null) {
                strKey = "";
            }
            KeyGenerator _generator = KeyGenerator.getInstance("AES");
            SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
            secureRandom.setSeed(strKey.getBytes());
            _generator.init(128, secureRandom);
            return _generator.generateKey();
        } catch (Exception e) {
            throw new RuntimeException(" 初始化密鑰出現異常 ");
        }
    }


    public static String encrypt(String data, String key) throws Exception {
        SecureRandom sr = new SecureRandom();
        Key secureKey = getKey(key);
        Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
        cipher.init(Cipher.ENCRYPT_MODE, secureKey, sr);
        byte[] bt = cipher.doFinal(data.getBytes());
        String strS = new BASE64Encoder().encode(bt);
        return strS;
    }


    public static String decrypt(String message, String key) {
        try {
            SecureRandom sr = new SecureRandom();
            Cipher cipher = Cipher.getInstance(CIPHER_ALGORITHM);
            Key secureKey = getKey(key);
            cipher.init(Cipher.DECRYPT_MODE, secureKey, sr);
            byte[] res = new BASE64Decoder().decodeBuffer(message);
            res = cipher.doFinal(res);
            return new String(res);
        } catch (Exception e) {
            e.printStackTrace();
        }
        return null;
    }

    public static void main(String[] args) throws Exception {
        String enc = encrypt("66666666", "123456");
        System.out.println(enc);
        String dec = decrypt("oZfiu/Mpn+v64BiF+AWwcg==", "123456");
        System.out.println(dec);
//        if ("e".equals(args[0])) {
//            System.out.println(encrypt(args[1], args[2]));
//        } else if ("d".equals(args[0])) {
//            System.out.println(decrypt(args[1], args[2]));
//        }
    }
}