package com.ruoyi.common.utils;

import cn.hutool.core.util.CharsetUtil;
import cn.hutool.crypto.SmUtil;
import cn.hutool.crypto.symmetric.SymmetricCrypto;
import com.alibaba.fastjson2.JSON;
import com.alibaba.fastjson2.JSONObject;

/**
 * @Author 国密4工具类
 * @Description 数据加密解密
 **/
public class Sm4Utils {


    // 示例密钥，实际应用中应使用安全的方式生成和存储密钥
    private static final String KEY = "2022lab02ora12to";
    /**
     * sm4数据加密
     * @param params 参数信息
     * @return 加密后的值
     */
    public static String sm4EncryptUtil(String params){
        SymmetricCrypto sm4 = SmUtil.sm4(KEY.getBytes());
        return sm4.encryptHex(params);
    }
 
    /**
     * sm4数据解密
     * @param encryptContext 加密的内容
     * @return 解密后的值
     */
    public static String sm4DecryptUtil(String encryptContext){
        JSONObject jsonObject = JSONObject.parseObject(encryptContext);
        String param = jsonObject.getString("param");
        SymmetricCrypto sm4 = SmUtil.sm4(KEY.getBytes());
        return sm4.decryptStr(param, CharsetUtil.CHARSET_UTF_8);
    }
 
    /**
     * 测试方法，测试完要记得删除掉
     */
    public static void main(String[] args) {
        // 自定义秘钥
        String secretKey = "csdn1024CSDN1024";
 
        JSONObject jsonObject = new JSONObject();
        jsonObject.put("name", "csdn");
        jsonObject.put("desc","1024程序员节");
 
        String strParams = JSON.toJSONString(jsonObject);
        System.out.println(String.format("明文参数: %s", strParams));
 
        String encryptContext = sm4EncryptUtil(strParams);
        System.out.println(String.format("加密后的值: %s", encryptContext));
        String decryptInfo = sm4DecryptUtil("d2f1da26d73f31d8f66ea64b23beebe014345f504ca516579dce993e4a527b48bc242f17941c7cb6d3eeb60bfe6175a51dafb387fa67a655fb18084acf6f68d149b14b6b9bb0063a7714ae24df78e064250b7bcd7847a719a69328ffaaa2d3add6d002b44fcc4610f3661f7611031cd410325c8391a7227ded9f6c4ec8d8a9908ae19c93c4fb2a16501738055acbea0925500bf691703c2ad4e1b172679d38da");
        System.out.println(String.format("解密后的信息: %s", decryptInfo));
    }
 
}