Tools/加密后软件工具/CAD插件工具/提供注册码用/Regest/Regest/Form1.cs

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.IO;
using System.Linq;
using System.Security.Cryptography;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

namespace Regest
{
    public partial class Form1 : Form
    {
        public Form1()
        {
            InitializeComponent();
        }

        private void button1_Click(object sender, EventArgs e)
        {
            string jqm = textBox2.Text;
            jqm = jqm +"," + workdays.Text;
            DESCryptoServiceProvider des = new DESCryptoServiceProvider();
            byte[] inputByteArray = Encoding.Default.GetBytes(jqm);
            des.Key = ASCIIEncoding.ASCII.GetBytes("vnf4s3ru");// 密钥
            des.IV = ASCIIEncoding.ASCII.GetBytes("vnf4s3ru");// 初始化向量
            MemoryStream ms = new MemoryStream();
            CryptoStream cs = new CryptoStream(ms, des.CreateEncryptor(), CryptoStreamMode.Write);
            cs.Write(inputByteArray, 0, inputByteArray.Length);
            cs.FlushFinalBlock();
            var retB = Convert.ToBase64String(ms.ToArray());
            textBox1.Text = retB;
        }
    }
}