实践过程
效果
代码
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public partial class Form1 : Form { public Form1() { InitializeComponent(); CheckForIllegalCrossThreadCalls = false ; } 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() == ".mr" ) { textBox1.Text = strFile; button2.Enabled = false ; button3.Enabled = true ; } } catch { } } //选择加密、解密文件 private void button1_Click( object sender, EventArgs e) { if (openFileDialog1.ShowDialog() == DialogResult.OK) { textBox1.Text = openFileDialog1.FileName; FileInfo FInfo = new FileInfo(textBox1.Text); if (FInfo.Extension.ToLower() == ".mr" ) { button2.Enabled = false ; button3.Enabled = true ; } else { button2.Enabled = true ; button3.Enabled = false ; } } } //加密 private void button2_Click( object sender, EventArgs e) { if (textBox1.Text != "" ) { if (textBox2.Text.Length < 6) MessageBox.Show( "密码不能小于6位!" , "警告" , MessageBoxButtons.OK, MessageBoxIcon.Warning); else { EDncrypt myEDncrypt = new EDncrypt(textBox1.Text, textBox2.Text, progressBar1); myEDncrypt.StartEncrypt(); progressBar1.Value = 0; } } } //解密 private void button3_Click( object sender, EventArgs e) { if (textBox1.Text != "" ) { if (textBox2.Text.Length < 6) MessageBox.Show( "密码不能小于6位!" , "警告" , MessageBoxButtons.OK, MessageBoxIcon.Warning); else { EDncrypt myEDncrypt = new EDncrypt(textBox1.Text, textBox2.Text, progressBar1); myEDncrypt.StartDncrypt(); progressBar1.Value = 0; } } } //创建快捷菜单 public static void FileMenu( string strPath, string strName) { try { Registry.ClassesRoot.CreateSubKey( ".mr" ); RegistryKey RKey1 = Registry.ClassesRoot.OpenSubKey( ".mr" , true ); RKey1.SetValue( "" , "mrfile" ); RKey1.Close(); Registry.ClassesRoot.CreateSubKey( "mrfile" ); RegistryKey RKey2 = Registry.ClassesRoot.OpenSubKey( "mrfile" , true ); RKey2.CreateSubKey( "DefaultIcon" ); RKey2.CreateSubKey( "shell" ); RKey2.Close(); RegistryKey RKey3 = Registry.ClassesRoot.OpenSubKey( "mrfile\\DefaultIcon" , true ); RKey3.SetValue( "" , strPath); RKey3.Close(); RegistryKey RKey4 = Registry.ClassesRoot.OpenSubKey( "mrfile\\shell" , true ); RKey4.CreateSubKey( "解密" ); RKey4.Close(); RegistryKey RKey5 = Registry.ClassesRoot.OpenSubKey( "mrfile\\shell\\解密" , true ); RKey5.CreateSubKey( "command" ); RKey5.Close(); RegistryKey RKey6 = Registry.ClassesRoot.OpenSubKey( "mrfile\\shell\\解密\\command" , true ); RKey6.SetValue( "" , strName + " \\F %1" ); RKey6.Close(); } catch { } } } #region 加密、解密类 class EDncrypt { #region 定义全局变量及类对象 private string strFile = "" ; private string strNewFile = "" ; private string strPwd = "" ; private ProgressBar PBar = null ; private Thread EThread = null ; private Thread DThread = null ; #endregion //含参数的构造函数,用来初始化全局变量及对象 public EDncrypt( string name, string pwd, ProgressBar pb) { strFile = name; strPwd = pwd; PBar = pb; EThread = new Thread( new ThreadStart( this .myEThread)); DThread = new Thread( new ThreadStart( this .myDThread)); } //文件加密 private void myEThread() { 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(strFile, FileMode.Open, FileAccess.Read); FileStream NewFStream = new FileStream(strFile + ".mr" , 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)); PBar.Maximum = MaxNum; 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; try { if (PBar.Value < PBar.Maximum) { PBar.Value++; } } catch { } } CStream.Close(); NewFStream.Close(); FStream.Close(); File.Delete(strFile); MessageBox.Show( "文件加密成功!" , "信息提示" , MessageBoxButtons.OK, MessageBoxIcon.Information); } //运行加密线程 public void StartEncrypt() { EThread.Start(); } //文件解密 private void myDThread() { 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(strFile, FileMode.Open, FileAccess.Read); strNewFile = strFile.Substring(0, strFile.Length - 3); 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)); PBar.Maximum = MaxNum; 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; try { if (PBar.Value < PBar.Maximum) { PBar.Value++; } } catch { } } MessageBox.Show( "文件解密成功!" , "信息提示" , MessageBoxButtons.OK, MessageBoxIcon.Information); } catch { MessageBox.Show( "文件解密失败!" , "错误" , MessageBoxButtons.OK, MessageBoxIcon.Error); } } finally { CStream.Close(); FStream.Close(); NewFStream.Close(); } } //运行解密线程 public void StartDncrypt() { DThread.Start(); } } #endregion |
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partial class Form1 { /// <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 .label1 = new System.Windows.Forms.Label(); this .textBox1 = new System.Windows.Forms.TextBox(); this .button1 = new System.Windows.Forms.Button(); this .label2 = new System.Windows.Forms.Label(); this .textBox2 = new System.Windows.Forms.TextBox(); this .label3 = new System.Windows.Forms.Label(); this .label4 = new System.Windows.Forms.Label(); this .progressBar1 = new System.Windows.Forms.ProgressBar(); this .groupBox1 = new System.Windows.Forms.GroupBox(); this .button2 = new System.Windows.Forms.Button(); this .button3 = new System.Windows.Forms.Button(); this .openFileDialog1 = new System.Windows.Forms.OpenFileDialog(); this .groupBox1.SuspendLayout(); this .SuspendLayout(); // // 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(161, 12); this .label1.TabIndex = 0; this .label1.Text = "请选择要加密或解密的文件:" ; // // textBox1 // this .textBox1.Location = new System.Drawing.Point(32, 35); this .textBox1.Name = "textBox1" ; this .textBox1.Size = new System.Drawing.Size(263, 21); this .textBox1.TabIndex = 1; // // button1 // this .button1.Location = new System.Drawing.Point(301, 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); // // label2 // this .label2.AutoSize = true ; this .label2.Location = new System.Drawing.Point(7, 71); this .label2.Name = "label2" ; this .label2.Size = new System.Drawing.Size(83, 12); this .label2.TabIndex = 3; this .label2.Text = "加/解密密码:" ; // // textBox2 // this .textBox2.Location = new System.Drawing.Point(92, 68); this .textBox2.Name = "textBox2" ; this .textBox2.PasswordChar = '*' ; this .textBox2.Size = new System.Drawing.Size(151, 21); this .textBox2.TabIndex = 4; // // label3 // this .label3.AutoSize = true ; this .label3.ForeColor = System.Drawing.Color.Red; this .label3.Location = new System.Drawing.Point(243, 71); 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)" ; // // label4 // this .label4.AutoSize = true ; this .label4.Location = new System.Drawing.Point(7, 101); this .label4.Name = "label4" ; this .label4.Size = new System.Drawing.Size(83, 12); this .label4.TabIndex = 6; this .label4.Text = "加/解密进度:" ; // // progressBar1 // this .progressBar1.Location = new System.Drawing.Point(92, 99); this .progressBar1.Name = "progressBar1" ; this .progressBar1.Size = new System.Drawing.Size(242, 18); this .progressBar1.TabIndex = 7; // // groupBox1 // this .groupBox1.Controls.Add( this .label1); this .groupBox1.Controls.Add( this .progressBar1); this .groupBox1.Controls.Add( this .textBox1); this .groupBox1.Controls.Add( this .label4); 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, 5); this .groupBox1.Name = "groupBox1" ; this .groupBox1.Size = new System.Drawing.Size(342, 123); this .groupBox1.TabIndex = 8; this .groupBox1.TabStop = false ; this .groupBox1.Text = "文件加/解密设置" ; // // button2 // this .button2.Enabled = false ; this .button2.Location = new System.Drawing.Point(223, 134); this .button2.Name = "button2" ; this .button2.Size = new System.Drawing.Size(59, 27); this .button2.TabIndex = 9; this .button2.Text = "加密" ; this .button2.UseVisualStyleBackColor = true ; this .button2.Click += new System.EventHandler( this .button2_Click); // // button3 // this .button3.Enabled = false ; this .button3.Location = new System.Drawing.Point(288, 134); this .button3.Name = "button3" ; this .button3.Size = new System.Drawing.Size(59, 27); this .button3.TabIndex = 9; this .button3.Text = "解密" ; this .button3.UseVisualStyleBackColor = true ; this .button3.Click += new System.EventHandler( this .button3_Click); // // openFileDialog1 // this .openFileDialog1.FileName = "openFileDialog1" ; // // Form1 // this .AutoScaleDimensions = new System.Drawing.SizeF(6F, 12F); this .AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font; this .ClientSize = new System.Drawing.Size(353, 167); this .Controls.Add( this .button3); this .Controls.Add( this .button2); this .Controls.Add( this .groupBox1); this .MaximizeBox = false ; this .Name = "Form1" ; this .StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen; this .Text = "对文件进行加密保护" ; this .Load += new System.EventHandler( this .Form1_Load); this .groupBox1.ResumeLayout( false ); this .groupBox1.PerformLayout(); this .ResumeLayout( false ); } #endregion private System.Windows.Forms.Label label1; private System.Windows.Forms.TextBox textBox1; private System.Windows.Forms.Button button1; private System.Windows.Forms.Label label2; private System.Windows.Forms.TextBox textBox2; private System.Windows.Forms.Label label3; private System.Windows.Forms.Label label4; private System.Windows.Forms.ProgressBar progressBar1; private System.Windows.Forms.GroupBox groupBox1; private System.Windows.Forms.Button button2; private System.Windows.Forms.Button button3; private System.Windows.Forms.OpenFileDialog openFileDialog1; } |
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原文链接:https://blog.csdn.net/qq_27489007/article/details/128436713