使用口令加密可执行文件

start

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using System.IO;
using System.Security.Cryptography;
using Microsoft.Win32;

namespace EncryptExe
{
    public partial class FrmEncrypt : Form
    {
        public FrmEncrypt()
        {
            InitializeComponent();
        }

        private void Form1_Load(object sender, EventArgs e)
        {
            FileMenu(Application.ExecutablePath + ",0", Application.ExecutablePath);
            string[] str = Environment.GetCommandLineArgs();
            try
            {
                string strFile = "";
                for (int i = 2; i < str.Length; i++)
                    strFile += str[i];
                FileInfo FInfo = new FileInfo(strFile);
                if (FInfo.Extension.ToLower() == ".mrexe")
                    textBox1.Text = strFile;
            }
            catch { }
        }

        //选择要加密或解密的文件
        private void button1_Click(object sender, EventArgs e)
        {
            openFileDialog1.Filter = "*.exe(exe可执行文件)|*.exe|*.mrexe(mrexe加密文件)|*.mrexe|*.*(所有文件)|*.*";
            if (openFileDialog1.ShowDialog() == DialogResult.OK)
                textBox1.Text = openFileDialog1.FileName;
        }

        //加密EXE文件
        private void button2_Click(object sender, EventArgs e)
        {
            string strPwd = textBox2.Text;
            byte[] btRKey = new byte[0];
            if (strPwd.Length == 6)
            {
                btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[0], (byte)strPwd[1] };
            }
            if (strPwd.Length == 7)
            {
                btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[0] };
            }
            if (strPwd.Length >= 8)
            {
                btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[7] };
            }
            FileStream FStream = new FileStream(textBox1.Text, FileMode.Open, FileAccess.Read);
            FileStream NewFStream = new FileStream(textBox1.Text + ".mrexe", FileMode.OpenOrCreate, FileAccess.Write);
            NewFStream.SetLength((long)0);
            byte[] buffer = new byte[0x400];
            int MinNum = 0;
            long length = FStream.Length;
            int MaxNum = (int)(length / ((long)0x400));
            DES myDES = new DESCryptoServiceProvider();
            CryptoStream CStream = new CryptoStream(NewFStream, myDES.CreateEncryptor(btRKey, btRKey), CryptoStreamMode.Write);
            while (MinNum < length)
            {
                int count = FStream.Read(buffer, 0, 0x400);
                CStream.Write(buffer, 0, count);
                MinNum += count;
            }
            CStream.Close();
            NewFStream.Close();
            FStream.Close();
            File.Delete(textBox1.Text);
            MessageBox.Show("使用口令加密可执行文件成功！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Information);
        }

        //解密EXE文件
        private void button3_Click(object sender, EventArgs e)
        {
            string strPwd = textBox2.Text;
            FileStream FStream = null;
            FileStream NewFStream = null;
            CryptoStream CStream = null;
            try
            {
                try
                {
                    byte[] btRKey = new byte[0];
                    if (strPwd.Length == 6)
                    {
                        btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[0], (byte)strPwd[1] };
                    }
                    if (strPwd.Length == 7)
                    {
                        btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[0] };
                    }
                    if (strPwd.Length >= 8)
                    {
                        btRKey = new byte[] { (byte)strPwd[0], (byte)strPwd[1], (byte)strPwd[2], (byte)strPwd[3], (byte)strPwd[4], (byte)strPwd[5], (byte)strPwd[6], (byte)strPwd[7] };
                    }
                    FStream = new FileStream(textBox1.Text, FileMode.Open, FileAccess.Read);
                    string strNewFile = textBox1.Text.Substring(0, textBox1.Text.Length - 6);
                    NewFStream = new FileStream(strNewFile, FileMode.OpenOrCreate, FileAccess.Write);
                    NewFStream.SetLength((long)0);
                    byte[] buffer = new byte[0x400];
                    int MinNum = 0;
                    long length = FStream.Length;
                    int MaxNum = (int)(length / ((long)0x400));
                    DES myDES = new DESCryptoServiceProvider();
                    CStream = new CryptoStream(NewFStream, myDES.CreateDecryptor(btRKey, btRKey), CryptoStreamMode.Write);
                    while (MinNum < length)
                    {
                        int count = FStream.Read(buffer, 0, 0x400);
                        CStream.Write(buffer, 0, count);
                        MinNum += count;
                    }
                    CStream.Close();
                    FStream.Close();
                    NewFStream.Close();
                    File.Delete(textBox1.Text);
                    System.Diagnostics.Process.Start(strNewFile);
                }
                catch
                {
                    MessageBox.Show("口令错误！", "信息提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
                    textBox2.Focus();
                }
            }
            finally
            {
                CStream.Close();
                FStream.Close();
                NewFStream.Close();
            }
        }

        //创建快捷菜单
        public static void FileMenu(string strPath, string strName)
        {
            try
            {
                Registry.ClassesRoot.CreateSubKey(".mrexe");
                RegistryKey RKey1 = Registry.ClassesRoot.OpenSubKey(".mrexe", true);
                RKey1.SetValue("", "mrexefile");
                RKey1.Close();
                Registry.ClassesRoot.CreateSubKey("mrexefile");
                RegistryKey RKey2 = Registry.ClassesRoot.OpenSubKey("mrexefile", true);
                RKey2.CreateSubKey("DefaultIcon");
                RKey2.CreateSubKey("shell");
                RKey2.Close();
                RegistryKey RKey3 = Registry.ClassesRoot.OpenSubKey("mrexefile\\DefaultIcon", true);
                RKey3.SetValue("", strPath);
                RKey3.Close();
                RegistryKey RKey4 = Registry.ClassesRoot.OpenSubKey("mrexefile\\shell", true);
                RKey4.CreateSubKey("使用口令打开");
                RKey4.Close();
                RegistryKey RKey5 = Registry.ClassesRoot.OpenSubKey("mrexefile\\shell\\使用口令打开", true);
                RKey5.CreateSubKey("command");
                RKey5.Close();
                RegistryKey RKey6 = Registry.ClassesRoot.OpenSubKey("mrexefile\\shell\\使用口令打开\\command", true);
                RKey6.SetValue("", strName + " \\F %1");
                RKey6.Close();
            }
            catch
            {
            }
        }
    }
}

namespace EncryptExe
{
    partial class FrmEncrypt
    {
        /// <summary>
        /// 必需的设计器变量。
        /// </summary>
        private System.ComponentModel.IContainer components = null;

        /// <summary>
        /// 清理所有正在使用的资源。
        /// </summary>
        /// <param name="disposing">如果应释放托管资源，为 true；否则为 false。</param>
        protected override void Dispose(bool disposing)
        {
            if (disposing && (components != null))
            {
                components.Dispose();
            }
            base.Dispose(disposing);
        }

        #region Windows 窗体设计器生成的代码

        /// <summary>
        /// 设计器支持所需的方法 - 不要
        /// 使用代码编辑器修改此方法的内容。
        /// </summary>
        private void InitializeComponent()
        {
            this.button3 = new System.Windows.Forms.Button();
            this.button2 = new System.Windows.Forms.Button();
            this.groupBox1 = new System.Windows.Forms.GroupBox();
            this.label1 = new System.Windows.Forms.Label();
            this.textBox1 = new System.Windows.Forms.TextBox();
            this.button1 = new System.Windows.Forms.Button();
            this.label3 = new System.Windows.Forms.Label();
            this.label2 = new System.Windows.Forms.Label();
            this.textBox2 = new System.Windows.Forms.TextBox();
            this.openFileDialog1 = new System.Windows.Forms.OpenFileDialog();
            this.groupBox1.SuspendLayout();
            this.SuspendLayout();
            // 
            // button3
            // 
            this.button3.Location = new System.Drawing.Point(250, 107);
            this.button3.Name = "button3";
            this.button3.Size = new System.Drawing.Size(59, 27);
            this.button3.TabIndex = 11;
            this.button3.Text = "打开";
            this.button3.UseVisualStyleBackColor = true;
            this.button3.Click += new System.EventHandler(this.button3_Click);
            // 
            // button2
            // 
            this.button2.Location = new System.Drawing.Point(185, 107);
            this.button2.Name = "button2";
            this.button2.Size = new System.Drawing.Size(59, 27);
            this.button2.TabIndex = 12;
            this.button2.Text = "加密";
            this.button2.UseVisualStyleBackColor = true;
            this.button2.Click += new System.EventHandler(this.button2_Click);
            // 
            // groupBox1
            // 
            this.groupBox1.Controls.Add(this.label1);
            this.groupBox1.Controls.Add(this.textBox1);
            this.groupBox1.Controls.Add(this.button1);
            this.groupBox1.Controls.Add(this.label3);
            this.groupBox1.Controls.Add(this.label2);
            this.groupBox1.Controls.Add(this.textBox2);
            this.groupBox1.Location = new System.Drawing.Point(5, 9);
            this.groupBox1.Name = "groupBox1";
            this.groupBox1.Size = new System.Drawing.Size(304, 92);
            this.groupBox1.TabIndex = 10;
            this.groupBox1.TabStop = false;
            this.groupBox1.Text = "Exe文件加/解密设置";
            // 
            // label1
            // 
            this.label1.AutoSize = true;
            this.label1.Location = new System.Drawing.Point(6, 17);
            this.label1.Name = "label1";
            this.label1.Size = new System.Drawing.Size(95, 12);
            this.label1.TabIndex = 0;
            this.label1.Text = "请选择Exe文件：";
            // 
            // textBox1
            // 
            this.textBox1.Location = new System.Drawing.Point(32, 35);
            this.textBox1.Name = "textBox1";
            this.textBox1.Size = new System.Drawing.Size(225, 21);
            this.textBox1.TabIndex = 1;
            // 
            // button1
            // 
            this.button1.Location = new System.Drawing.Point(263, 33);
            this.button1.Name = "button1";
            this.button1.Size = new System.Drawing.Size(33, 23);
            this.button1.TabIndex = 2;
            this.button1.Text = "…";
            this.button1.UseVisualStyleBackColor = true;
            this.button1.Click += new System.EventHandler(this.button1_Click);
            // 
            // label3
            // 
            this.label3.AutoSize = true;
            this.label3.ForeColor = System.Drawing.Color.Red;
            this.label3.Location = new System.Drawing.Point(201, 66);
            this.label3.Name = "label3";
            this.label3.Size = new System.Drawing.Size(95, 12);
            this.label3.TabIndex = 5;
            this.label3.Text = "(密码应大于6位)";
            // 
            // label2
            // 
            this.label2.AutoSize = true;
            this.label2.Location = new System.Drawing.Point(7, 66);
            this.label2.Name = "label2";
            this.label2.Size = new System.Drawing.Size(65, 12);
            this.label2.TabIndex = 3;
            this.label2.Text = "加密口令：";
            // 
            // textBox2
            // 
            this.textBox2.Location = new System.Drawing.Point(73, 63);
            this.textBox2.Name = "textBox2";
            this.textBox2.PasswordChar = '*';
            this.textBox2.Size = new System.Drawing.Size(127, 21);
            this.textBox2.TabIndex = 4;
            // 
            // Form1
            // 
            this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F);
            this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
            this.ClientSize = new System.Drawing.Size(316, 140);
            this.Controls.Add(this.button3);
            this.Controls.Add(this.button2);
            this.Controls.Add(this.groupBox1);
            this.MaximizeBox = false;
            this.MinimizeBox = false;
            this.Name = "Form1";
            this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
            this.Text = "使用口令加密可执行文件";
            this.Load += new System.EventHandler(this.Form1_Load);
            this.groupBox1.ResumeLayout(false);
            this.groupBox1.PerformLayout();
            this.ResumeLayout(false);

        }

        #endregion

        private System.Windows.Forms.Button button3;
        private System.Windows.Forms.Button button2;
        private System.Windows.Forms.GroupBox groupBox1;
        private System.Windows.Forms.Label label1;
        private System.Windows.Forms.TextBox textBox1;
        private System.Windows.Forms.Button button1;
        private System.Windows.Forms.Label label3;
        private System.Windows.Forms.Label label2;
        private System.Windows.Forms.TextBox textBox2;
        private System.Windows.Forms.OpenFileDialog openFileDialog1;
    }
}

url:http://greatverve.cnblogs.com/p/EncryptExe.html