手写一个java加密工具类SecurityUtil

package com.chencongping.security;

import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import javax.crypto.Cipher;
import javax.crypto.spec.IvParameterSpec;
import javax.crypto.spec.SecretKeySpec;
import java.util.Base64;

public class SecurityUtil {
   
   

    private static Logger logger = LoggerFactory