Java DES3加密,包含密钥，日期偏移量，明文

Java DES3加密,包含密钥，日期偏移量，明文

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

public class DESUtil {
    private static String encoding = "gb2312";
    private static String data = "{\"parkCode\":\"1\",\"plateNo\":\"京A11113\"}";
    /**
    获取当前日期：yyyyMMdd
    */
     public static String getNowDateYMD() {
            Date date = new Date();
            SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd");
            return sdf.format(date);
    }
    /**加密*/
    public static String encrypt(String key, String iv, String data) throws Exception {
        SecretKey secretKey = new SecretKeySpec(key.getBytes(), "desede");

        Cipher cipher = Cipher.getInstance("desede/CBC/PKCS5Padding");
        IvParameterSpec ips = new IvParameterSpec(iv.getBytes());
        cipher.init(Cipher.ENCRYPT_MODE, secretKey, ips);
        byte[] encryptData = cipher.doFinal(data.getBytes(encoding));
        return Base64.getEncoder().encodeToString(encryptData);
    }

    /**解密*/
    public static String decrypt(String key, String iv, String data) throws Exception {
        SecretKey secretKey = new SecretKeySpec(key.getBytes(), "desede");
        Cipher cipher = Cipher.getInstance("desede/CBC/PKCS5Padding");
        IvParameterSpec ips = new IvParameterSpec(iv.getBytes());
        cipher.init(Cipher.DECRYPT_MODE, secretKey, ips);

        byte[] decryptData = cipher.doFinal(Base64.getDecoder().decode(data.getBytes(encoding)));
        return new String(decryptData, "GB2312");
    }
    /**测试*/
    public static void main(String[] args) throws Exception {
        String key = "693207DB8148FBC9D8410179";
         String iv = "20190225";
        String encryption = encrypt(key, iv, data);
        System.out.println(encryption);
        String decryption = decrypt(key, iv, encryption);
        System.out.println(decryption);
    }
}