package cn.csbr.configenc;

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

import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;

/*
aes加密工具
 */
public class AESUtil {
    private static String CKEY="3cbc87a4ba60488a";
    // 加密
    public static String Encrypt(String sSrc) throws Exception {

        // 判断Key是否为16位
        if (CKEY.length() != 16) {
            System.out.print("Key长度不是16位");
            return null;
        }
        byte[] raw = CKEY.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);
        byte[] encrypted = cipher.doFinal(sSrc.getBytes("utf-8"));

        return new Base64().encodeToString(encrypted);//此处使用BASE64做转码功能，同时能起到2次加密的作用。
    }

    // 解密
    public static String Decrypt(String sSrc){
        try {
            // 判断Key是否为16位
            if (CKEY.length() != 16) {
                System.out.print("Key长度不是16位");
                return null;
            }
            byte[] raw = CKEY.getBytes("utf-8");
            SecretKeySpec skeySpec = new SecretKeySpec(raw, "AES");
            Cipher cipher = Cipher.getInstance("AES/ECB/PKCS5Padding");
            cipher.init(Cipher.DECRYPT_MODE, skeySpec);
            byte[] encrypted1 = new Base64().decode(sSrc);//先用base64解密
            try {
                byte[] original = cipher.doFinal(encrypted1);
                String originalString = new String(original,"utf-8");
                return originalString;
            } catch (Exception e) {
                System.out.println(e.toString());
                return null;
            }
        } catch (Exception ex) {
            System.out.println(ex.toString());
            return null;
        }
    }

    public static void main(String[] args) throws Exception {

        // 需要加密的字串
        String url = "jdbc:mysql://127.0.0.1:3306/hcgnew?autoReconnect=true&autoReconnectForPools=true&useUnicode=true&characterEncoding=utf8&useSSL=false";
        System.out.println(url);
        // 加密

        System.out.println("加密后的字串是：" +  AESUtil.Encrypt(url));
        // 需要加密的字串
        String name = "root";
        System.out.println(name);
        // 加密
        System.out.println("加密后的字串是：" +  AESUtil.Encrypt(name));
        // 需要加密的字串
        String pwd = "123456";
        System.out.println(pwd);
        // 加密
        System.out.println("加密后的字串是：" +  AESUtil.Encrypt(pwd));

    }
}