open-JSD-9805/src/main/java/com/eco/plugin/xxx/bwjtsso/utils/AesUtils.java

package com.eco.plugin.xxx.bwjtsso.utils;


import org.apache.commons.codec.binary.Base64;

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
import java.net.URLEncoder;
import java.util.Date;

public class AesUtils {
    /**
     * 加密
     * @param sSrc 需要加密的字符串
     * @param sKey 加密钥匙
     * @return 加密后的字符串
     * @throws Exception
     */
    public static String encrypt(String sSrc, String sKey) throws Exception {

        try{
            if (null == sKey){
                System.out.print("Key为空null");
                return null;
            }
            // 判断Key是否为16位
            if (sKey.length() != 16){
                System.out.print("Key长度不是16位");
                return null;
            }
            // 判断Key是否为固定值
            if (!sKey.equals("6ay4dlwd4enjbf90")){
                System.out.print("Key值不对");
                return null;
            }
            byte[] raw = sKey.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");// "算法/模式/补码方式"
            cipher.init(Cipher.ENCRYPT_MODE, skeySpec);
            Date now = new Date();
            long time = now.getTime();
            sSrc = sSrc + "_" + time;
            System.out.println("加密前字符串是："+sSrc);
            byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));
            return EncryptUtils.base64Encode(encrypted);
        }catch (Exception ex){
            System.out.println(ex.toString());
            return null;
        }
    }

    /**
     * 解密
     * @param sSrc 需要解密的字符串
     * @param sKey 解密钥匙
     * @return 解密后的字符串
     * @throws Exception
     */
    public static String decrypt(String sSrc, String sKey){
        try{
            // 判断Key是否正确
            if (null == sKey){
                FRUtils.FRLogInfo("Key为空null");
                return null;
            }
            // 判断Key是否为16位
            if (sKey.length() != 16){
                FRUtils.FRLogInfo("Key长度不是16位");
                return null;
            }
//            // 判断Key是否为固定值
//            if (!sKey.equals("6ay4dlwd4enjbf90")){
//                FRUtils.FRLogInfo("");
//                System.out.print("Key值不对");
//                return null;
//            }
            byte[] raw = sKey.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);
            byte[] encrypted1 =EncryptUtils.base64DecodeB(sSrc);// 先用base64解密
            byte[] original = cipher.doFinal(encrypted1);
            String originalString = new String(original, "utf-8");
            String []strArr = originalString.split("_");
            String timeStr = strArr[1];
            long timeOld = Long.parseLong(timeStr);
            Date now = new Date();
            long timeNow = now.getTime();
            long minute = (timeNow - timeOld)/1000/60;
            if(minute <= 2) {// 解密在两分钟内有效
                return strArr[0];
            }else {
                FRUtils.FRLogInfo("当前检验已过期！！！");
                return null;
            }

        }catch (Exception ex){
            FRUtils.FRLogInfo("exception : "+ex.getMessage());

            return null;
        }
    }

}