using System;
using System.ComponentModel;
using System.Drawing;
using System.IO;
using System.Security.Cryptography;
using System.Text;
using System.Windows.Forms;

namespace RuralHosesInvestigation.Authorization
{
    public class RegisterForm : Form
    {
        private IContainer icontainer_0;

        private Label label1;

        private TextBox txtCpuId;

        private Label label2;

        private TextBox txtRegisterNum;

        private Button btnRegister;

        protected override void Dispose(bool disposing)
        {
            if (disposing && this.icontainer_0 != null)
            {
                this.icontainer_0.Dispose();
            }
            base.Dispose(disposing);
        }

        private void InitializeComponent()
        {
            this.label1 = new Label();
            this.txtCpuId = new TextBox();
            this.label2 = new Label();
            this.txtRegisterNum = new TextBox();
            this.btnRegister = new Button();
            base.SuspendLayout();
            this.label1.AutoSize = true;
            this.label1.Location = new Point(13, 16);
            this.label1.Name = "label1";
            this.label1.Size = new Size(53, 12);
            this.label1.TabIndex = 0;
            this.label1.Text = "机器码：";
            this.txtCpuId.Location = new Point(72, 13);
            this.txtCpuId.Name = "txtCpuId";
            this.txtCpuId.ReadOnly = true;
            this.txtCpuId.Size = new Size(232, 21);
            this.txtCpuId.TabIndex = 1;
            this.label2.AutoSize = true;
            this.label2.Location = new Point(13, 43);
            this.label2.Name = "label2";
            this.label2.Size = new Size(53, 12);
            this.label2.TabIndex = 0;
            this.label2.Text = "注册码：";
            this.txtRegisterNum.Location = new Point(72, 40);
            this.txtRegisterNum.Name = "txtRegisterNum";
            this.txtRegisterNum.Size = new Size(232, 21);
            this.txtRegisterNum.TabIndex = 1;
            this.btnRegister.Location = new Point(72, 68);
            this.btnRegister.Name = "btnRegister";
            this.btnRegister.Size = new Size(67, 23);
            this.btnRegister.TabIndex = 2;
            this.btnRegister.Text = "注册";
            this.btnRegister.UseVisualStyleBackColor = true;
            this.btnRegister.Click += new EventHandler(this.btnRegister_Click);
            base.AutoScaleDimensions = new SizeF(6f, 12f);
            base.AutoScaleMode = AutoScaleMode.Font;
            base.ClientSize = new Size(316, 100);
            base.Controls.Add(this.btnRegister);
            base.Controls.Add(this.txtRegisterNum);
            base.Controls.Add(this.label2);
            base.Controls.Add(this.txtCpuId);
            base.Controls.Add(this.label1);
            base.FormBorderStyle = FormBorderStyle.FixedToolWindow;
            base.Name = "RegisterForm";
            this.Text = "农房调查软件注册";
            base.ResumeLayout(false);
            base.PerformLayout();
        }

        public RegisterForm()
        {
            this.InitializeComponent();
            this.txtCpuId.Text = Class16.smethod_2() + Class16.smethod_3();
            if (!Class16.Boolean_0)
            {
                if (Class16.Boolean_1)
                {
                    this.txtRegisterNum.Text = Class16.String_0;
                    this.btnRegister.Text = "升级授权";
                }
                return;
            }
            this.txtRegisterNum.Text = Class16.String_0;
            this.btnRegister.Text = "已注册";
            this.btnRegister.Enabled = false;
        }

        private void btnRegister_Click(object sender, EventArgs e)
        {
            string text = this.txtRegisterNum.Text.Trim();
            if (string.IsNullOrEmpty(text))
            {
                MessageBox.Show("请输入注册码！");
                return;
            }
            if (text == RegisterForm.smethod_0(this.txtCpuId.Text))
            {
                Class16.smethod_6(text);
                MessageBox.Show("注册成功！");
                this.btnRegister.Text = "已注册";
                this.btnRegister.Enabled = false;
                return;
            }
            if (!(text == RegisterForm.smethod_1(this.txtCpuId.Text)))
            {
                MessageBox.Show("注册码不正确，注册失败！");
                return;
            }
            Class16.smethod_7(text);
            MessageBox.Show("注册成功，您现在已是高级用户！");
            this.btnRegister.Text = "升级授权";
        }

        private static string smethod_0(string string_0)
        {
            byte[] byte_ = RegisterForm.smethod_2(string_0);
            byte[] byte_2 = RegisterForm.smethod_3(byte_, "Sj170319");
            byte[] value = RegisterForm.smethod_5(byte_2);
            return BitConverter.ToString(value).Replace("-", "");
        }

        private static string smethod_1(string string_0)
        {
            byte[] byte_ = RegisterForm.smethod_2(string_0);
            byte[] byte_2 = RegisterForm.smethod_3(byte_, "Aza17052");
            byte[] value = RegisterForm.smethod_5(byte_2);
            return BitConverter.ToString(value).Replace("-", "");
        }

        private static byte[] smethod_2(string string_0)
        {
            byte[] bytes = Encoding.UTF8.GetBytes(string_0);
            for (int i = 0; i < bytes.Length; i++)
            {
                byte b = bytes[i];
                byte b2 = b / 16;
                byte b3 = b % 16;
                switch (i % 4)
                {
                case 1:
                    b3 = 15 - b3;
                    break;
                case 2:
                    b2 = 15 - b2;
                    break;
                case 3:
                    b2 = 15 - b2;
                    b3 = 15 - b3;
                    break;
                }
                if (i % 2 != 0)
                {
                    bytes[i] = b3 * 16 + b2;
                }
                else
                {
                    bytes[i] = b2 * 16 + b3;
                }
            }
            if (bytes.Length > 1)
            {
                byte b4 = bytes[0] / 16;
                byte b5 = bytes[bytes.Length - 1] % 16;
                bytes[0] = b5 * 16 + b4;
                for (int j = 1; j < bytes.Length; j++)
                {
                    byte b6 = bytes[j - 1] % 16;
                    byte b7 = bytes[j] / 16;
                    bytes[j] = b6 * 16 + b7;
                }
                return bytes;
            }
            return bytes;
        }

        private static byte[] smethod_3(byte[] byte_0, string string_0)
        {
            byte[] bytes = Encoding.UTF8.GetBytes(string_0);
            byte[] rgbIV = bytes;
            DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();
            MemoryStream memoryStream = new MemoryStream();
            CryptoStream cryptoStream = new CryptoStream(memoryStream, dESCryptoServiceProvider.CreateEncryptor(bytes, rgbIV), CryptoStreamMode.Write);
            cryptoStream.Write(byte_0, 0, byte_0.Length);
            cryptoStream.FlushFinalBlock();
            return memoryStream.ToArray();
        }

        private static string smethod_4(string string_0, string string_1)
        {
            byte[] bytes = Encoding.UTF8.GetBytes(string_1);
            byte[] rgbIV = bytes;
            byte[] array = Convert.FromBase64String(string_0);
            DESCryptoServiceProvider dESCryptoServiceProvider = new DESCryptoServiceProvider();
            MemoryStream memoryStream = new MemoryStream();
            CryptoStream cryptoStream = new CryptoStream(memoryStream, dESCryptoServiceProvider.CreateDecryptor(bytes, rgbIV), CryptoStreamMode.Write);
            cryptoStream.Write(array, 0, array.Length);
            cryptoStream.FlushFinalBlock();
            return Encoding.UTF8.GetString(memoryStream.ToArray());
        }

        private static byte[] smethod_5(byte[] byte_0)
        {
            MD5 mD = new MD5CryptoServiceProvider();
            return mD.ComputeHash(byte_0);
        }
    }
}

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