AES加解密

AES加密

    private static final String KEY_AES_ALGORITHM = "AES";
    private static final String DEFAULT_CIPHER_ALGORITHM = "AES/ECB/PKCS5Padding";//默认的加密算法

/**
     * AES 加密操作
     *
     * @param content  待加密内容  WMS_0002870
     * @param password 加密密码
     * @return 返回Base64转码后的加密数据
     */
    public static String encryptAESECBPK5(String content, String password) {
        try {
            Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);// 创建密码器

            byte[] byteContent = content.getBytes("utf-8");

            cipher.init(Cipher.ENCRYPT_MODE, getSecretKey(password));// 初始化为加密模式的密码器

            byte[] result = cipher.doFinal(byteContent);// 加密

            return Base64.encodeBase64String(result);//通过Base64转码返回
        } catch (Exception ex) {
            Logger.getLogger(EncodeUtil.class.getName()).log(Level.SEVERE, null, ex);
        }

        return null;
    }

　　AES解密

/**
     * AES 解密操作
     *
     * @param content
     * @param password
     * @return
     */
    public static String decryptAESECBPK5(String content, String password) throws UnsupportedEncodingException {
        byte[] result = new byte[0];

        try {
            //实例化
            Cipher cipher = Cipher.getInstance(DEFAULT_CIPHER_ALGORITHM);

            //使用密钥初始化，设置为解密模式
            cipher.init(Cipher.DECRYPT_MODE, getSecretKey(password));

            //执行操作
            result = cipher.doFinal(Base64.decodeBase64(content));
        } catch (NoSuchAlgorithmException e) {
        } catch (NoSuchPaddingException e) {
        } catch (InvalidKeyException e) {
        } catch (IllegalBlockSizeException e) {
        } catch (BadPaddingException e) {
        }

        return new String(result, "utf-8");

    }

　　生成秘钥的方法

    /**
     * 生成加密秘钥
     *
     * @return
     */
    private static SecretKeySpec getSecretKey(final String password) {
        //返回生成指定算法密钥生成器的 KeyGenerator 对象
        KeyGenerator kg = null;

        try {
            kg = KeyGenerator.getInstance(KEY_AES_ALGORITHM);
            //AES 要求密钥长度为 128
            SecureRandom secureRandom = SecureRandom.getInstance("SHA1PRNG");
            secureRandom.setSeed(password.getBytes());
//            kg.init(128, new SecureRandom(password.getBytes()));
            kg.init(128, secureRandom);
//            kg.init(128,);
            //生成一个密钥
            SecretKey secretKey = kg.generateKey();
            return new SecretKeySpec(secretKey.getEncoded(), KEY_AES_ALGORITHM);// 转换为AES专用密钥
        } catch (NoSuchAlgorithmException ex) {
            Logger.getLogger(EncodeUtil.class.getName()).log(Level.SEVERE, null, ex);
        }

        return null;
    }