Cryptography/Network Security

using System;
using System.Drawing;
using System.Collections;
using System.ComponentModel;
using System.Windows.Forms;
using System.Data;
using Cryptography;

namespace Cryptography_Demo
{
	/// <summary>
	/// Summary description for Form1.
	/// </summary>
	public class frmmain : System.Windows.Forms.Form
	{
		private System.Windows.Forms.GroupBox groupBox4;
		private System.Windows.Forms.Label label3;
		private System.Windows.Forms.Label label4;
		private System.Windows.Forms.GroupBox groupBox3;
		private System.Windows.Forms.GroupBox groupBox2;
		private System.Windows.Forms.GroupBox groupBox1;
		private System.Windows.Forms.Label label2;
		private System.Windows.Forms.Label label1;
		private System.Windows.Forms.TextBox txtprk;
		private System.Windows.Forms.TextBox txtpk;
		private System.Windows.Forms.TextBox txtcipher;
		private System.Windows.Forms.TextBox txtplain;
		private System.Windows.Forms.TextBox txtiv;
		private System.Windows.Forms.TextBox txtsk;
		private System.Windows.Forms.Button btngs;
		private System.Windows.Forms.Button btnds;
		private System.Windows.Forms.Button btnes;
		private System.Windows.Forms.Button btnga;
		private System.Windows.Forms.Button btnda;
		private System.Windows.Forms.Button btnea;
		/// <summary>
		/// Required designer variable.
		/// </summary>
		private System.ComponentModel.Container components = null;

		public frmmain()
		{
			//
			// Required for Windows Form Designer support
			//
			InitializeComponent();

			//
			// TODO: Add any constructor code after InitializeComponent call
			//
		}

		/// <summary>
		/// Clean up any resources being used.
		/// </summary>
		protected override void Dispose( bool disposing )
		{
			if( disposing )
			{
				if (components != null) 
				{
					components.Dispose();
				}
			}
			base.Dispose( disposing );
		}

		#region Windows Form Designer generated code
		/// <summary>
		/// Required method for Designer support - do not modify
		/// the contents of this method with the code editor.
		/// </summary>
		private void InitializeComponent()
		{
			this.groupBox4 = new System.Windows.Forms.GroupBox();
			this.label3 = new System.Windows.Forms.Label();
			this.label4 = new System.Windows.Forms.Label();
			this.txtiv = new System.Windows.Forms.TextBox();
			this.txtsk = new System.Windows.Forms.TextBox();
			this.btngs = new System.Windows.Forms.Button();
			this.btnds = new System.Windows.Forms.Button();
			this.btnes = new System.Windows.Forms.Button();
			this.groupBox3 = new System.Windows.Forms.GroupBox();
			this.txtcipher = new System.Windows.Forms.TextBox();
			this.groupBox2 = new System.Windows.Forms.GroupBox();
			this.txtplain = new System.Windows.Forms.TextBox();
			this.groupBox1 = new System.Windows.Forms.GroupBox();
			this.label2 = new System.Windows.Forms.Label();
			this.label1 = new System.Windows.Forms.Label();
			this.txtprk = new System.Windows.Forms.TextBox();
			this.txtpk = new System.Windows.Forms.TextBox();
			this.btnga = new System.Windows.Forms.Button();
			this.btnda = new System.Windows.Forms.Button();
			this.btnea = new System.Windows.Forms.Button();
			this.groupBox4.SuspendLayout();
			this.groupBox3.SuspendLayout();
			this.groupBox2.SuspendLayout();
			this.groupBox1.SuspendLayout();
			this.SuspendLayout();
			// 
			// groupBox4
			// 
			this.groupBox4.Controls.Add(this.label3);
			this.groupBox4.Controls.Add(this.label4);
			this.groupBox4.Controls.Add(this.txtiv);
			this.groupBox4.Controls.Add(this.txtsk);
			this.groupBox4.Controls.Add(this.btngs);
			this.groupBox4.Controls.Add(this.btnds);
			this.groupBox4.Controls.Add(this.btnes);
			this.groupBox4.Location = new System.Drawing.Point(52, 350);
			this.groupBox4.Name = "groupBox4";
			this.groupBox4.Size = new System.Drawing.Size(352, 152);
			this.groupBox4.TabIndex = 18;
			this.groupBox4.TabStop = false;
			this.groupBox4.Text = "Asymetric Cryptography";
			// 
			// label3
			// 
			this.label3.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.label3.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label3.Location = new System.Drawing.Point(107, 16);
			this.label3.Name = "label3";
			this.label3.Size = new System.Drawing.Size(112, 24);
			this.label3.TabIndex = 11;
			this.label3.Text = "Initialization Vector";
			// 
			// label4
			// 
			this.label4.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.label4.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label4.Location = new System.Drawing.Point(8, 16);
			this.label4.Name = "label4";
			this.label4.Size = new System.Drawing.Size(72, 23);
			this.label4.TabIndex = 10;
			this.label4.Text = "Session Key";
			// 
			// txtiv
			// 
			this.txtiv.BackColor = System.Drawing.Color.Black;
			this.txtiv.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.txtiv.ForeColor = System.Drawing.Color.Red;
			this.txtiv.Location = new System.Drawing.Point(112, 40);
			this.txtiv.Multiline = true;
			this.txtiv.Name = "txtiv";
			this.txtiv.ReadOnly = true;
			this.txtiv.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtiv.Size = new System.Drawing.Size(100, 96);
			this.txtiv.TabIndex = 9;
			this.txtiv.Text = "";
			// 
			// txtsk
			// 
			this.txtsk.BackColor = System.Drawing.Color.Black;
			this.txtsk.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.txtsk.ForeColor = System.Drawing.Color.LawnGreen;
			this.txtsk.Location = new System.Drawing.Point(8, 40);
			this.txtsk.Multiline = true;
			this.txtsk.Name = "txtsk";
			this.txtsk.ReadOnly = true;
			this.txtsk.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtsk.Size = new System.Drawing.Size(100, 96);
			this.txtsk.TabIndex = 8;
			this.txtsk.Text = "";
			// 
			// btngs
			// 
			this.btngs.Location = new System.Drawing.Point(232, 40);
			this.btngs.Name = "btngs";
			this.btngs.TabIndex = 0;
			this.btngs.Text = "Generation";
			this.btngs.Click += new System.EventHandler(this.btngs_Click);
			// 
			// btnds
			// 
			this.btnds.Enabled = false;
			this.btnds.Location = new System.Drawing.Point(232, 88);
			this.btnds.Name = "btnds";
			this.btnds.TabIndex = 3;
			this.btnds.Text = "Decription";
			this.btnds.Click += new System.EventHandler(this.btnds_Click);
			// 
			// btnes
			// 
			this.btnes.Enabled = false;
			this.btnes.Location = new System.Drawing.Point(232, 64);
			this.btnes.Name = "btnes";
			this.btnes.TabIndex = 2;
			this.btnes.Text = "Encription";
			this.btnes.Click += new System.EventHandler(this.btnes_Click);
			// 
			// groupBox3
			// 
			this.groupBox3.Controls.Add(this.txtcipher);
			this.groupBox3.Location = new System.Drawing.Point(52, 102);
			this.groupBox3.Name = "groupBox3";
			this.groupBox3.Size = new System.Drawing.Size(352, 96);
			this.groupBox3.TabIndex = 17;
			this.groupBox3.TabStop = false;
			this.groupBox3.Text = "Cipher Text";
			// 
			// txtcipher
			// 
			this.txtcipher.BackColor = System.Drawing.Color.Black;
			this.txtcipher.BorderStyle = System.Windows.Forms.BorderStyle.None;
			this.txtcipher.Dock = System.Windows.Forms.DockStyle.Fill;
			this.txtcipher.ForeColor = System.Drawing.Color.LawnGreen;
			this.txtcipher.Location = new System.Drawing.Point(3, 16);
			this.txtcipher.Multiline = true;
			this.txtcipher.Name = "txtcipher";
			this.txtcipher.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtcipher.Size = new System.Drawing.Size(346, 77);
			this.txtcipher.TabIndex = 1;
			this.txtcipher.Text = "";
			// 
			// groupBox2
			// 
			this.groupBox2.Controls.Add(this.txtplain);
			this.groupBox2.Location = new System.Drawing.Point(52, 6);
			this.groupBox2.Name = "groupBox2";
			this.groupBox2.Size = new System.Drawing.Size(352, 96);
			this.groupBox2.TabIndex = 16;
			this.groupBox2.TabStop = false;
			this.groupBox2.Text = "Plain Text";
			// 
			// txtplain
			// 
			this.txtplain.BackColor = System.Drawing.Color.White;
			this.txtplain.BorderStyle = System.Windows.Forms.BorderStyle.None;
			this.txtplain.Dock = System.Windows.Forms.DockStyle.Fill;
			this.txtplain.ForeColor = System.Drawing.Color.Black;
			this.txtplain.Location = new System.Drawing.Point(3, 16);
			this.txtplain.Multiline = true;
			this.txtplain.Name = "txtplain";
			this.txtplain.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtplain.Size = new System.Drawing.Size(346, 77);
			this.txtplain.TabIndex = 1;
			this.txtplain.Text = "It is a secrate Message";
			// 
			// groupBox1
			// 
			this.groupBox1.Controls.Add(this.label2);
			this.groupBox1.Controls.Add(this.label1);
			this.groupBox1.Controls.Add(this.txtprk);
			this.groupBox1.Controls.Add(this.txtpk);
			this.groupBox1.Controls.Add(this.btnga);
			this.groupBox1.Controls.Add(this.btnda);
			this.groupBox1.Controls.Add(this.btnea);
			this.groupBox1.Location = new System.Drawing.Point(52, 198);
			this.groupBox1.Name = "groupBox1";
			this.groupBox1.Size = new System.Drawing.Size(352, 152);
			this.groupBox1.TabIndex = 15;
			this.groupBox1.TabStop = false;
			this.groupBox1.Text = "Asymetric Cryptography";
			// 
			// label2
			// 
			this.label2.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.label2.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label2.Location = new System.Drawing.Point(112, 16);
			this.label2.Name = "label2";
			this.label2.Size = new System.Drawing.Size(72, 24);
			this.label2.TabIndex = 11;
			this.label2.Text = "Private Key";
			// 
			// label1
			// 
			this.label1.BorderStyle = System.Windows.Forms.BorderStyle.Fixed3D;
			this.label1.Font = new System.Drawing.Font("Microsoft Sans Serif", 8.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
			this.label1.Location = new System.Drawing.Point(8, 16);
			this.label1.Name = "label1";
			this.label1.Size = new System.Drawing.Size(72, 23);
			this.label1.TabIndex = 10;
			this.label1.Text = "Public Key";
			// 
			// txtprk
			// 
			this.txtprk.BackColor = System.Drawing.Color.Black;
			this.txtprk.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.txtprk.ForeColor = System.Drawing.Color.Red;
			this.txtprk.Location = new System.Drawing.Point(112, 40);
			this.txtprk.Multiline = true;
			this.txtprk.Name = "txtprk";
			this.txtprk.ReadOnly = true;
			this.txtprk.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtprk.Size = new System.Drawing.Size(100, 96);
			this.txtprk.TabIndex = 9;
			this.txtprk.Text = "";
			// 
			// txtpk
			// 
			this.txtpk.BackColor = System.Drawing.Color.Black;
			this.txtpk.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
			this.txtpk.ForeColor = System.Drawing.Color.LawnGreen;
			this.txtpk.Location = new System.Drawing.Point(8, 40);
			this.txtpk.Multiline = true;
			this.txtpk.Name = "txtpk";
			this.txtpk.ReadOnly = true;
			this.txtpk.ScrollBars = System.Windows.Forms.ScrollBars.Vertical;
			this.txtpk.Size = new System.Drawing.Size(100, 96);
			this.txtpk.TabIndex = 8;
			this.txtpk.Text = "";
			// 
			// btnga
			// 
			this.btnga.Location = new System.Drawing.Point(232, 40);
			this.btnga.Name = "btnga";
			this.btnga.TabIndex = 0;
			this.btnga.Text = "Generation";
			this.btnga.Click += new System.EventHandler(this.btnga_Click);
			// 
			// btnda
			// 
			this.btnda.Enabled = false;
			this.btnda.Location = new System.Drawing.Point(232, 88);
			this.btnda.Name = "btnda";
			this.btnda.TabIndex = 3;
			this.btnda.Text = "Decription";
			this.btnda.Click += new System.EventHandler(this.btnda_Click);
			// 
			// btnea
			// 
			this.btnea.Enabled = false;
			this.btnea.Location = new System.Drawing.Point(232, 64);
			this.btnea.Name = "btnea";
			this.btnea.TabIndex = 2;
			this.btnea.Text = "Encription";
			this.btnea.Click += new System.EventHandler(this.btnea_Click);
			// 
			// frmmain
			// 
			this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
			this.ClientSize = new System.Drawing.Size(456, 509);
			this.Controls.Add(this.groupBox4);
			this.Controls.Add(this.groupBox3);
			this.Controls.Add(this.groupBox2);
			this.Controls.Add(this.groupBox1);
			this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedToolWindow;
			this.Name = "frmmain";
			this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
			this.Text = "Cryptography";
			this.groupBox4.ResumeLayout(false);
			this.groupBox3.ResumeLayout(false);
			this.groupBox2.ResumeLayout(false);
			this.groupBox1.ResumeLayout(false);
			this.ResumeLayout(false);

		}
		#endregion

		/// <summary>
		/// The main entry point for the application.
		/// </summary>
		[STAThread]
		static void Main() 
		{
			Application.Run(new frmmain());
		}
		string pk,prk,sk,iv;

		private void btnga_Click(object sender, System.EventArgs e)
		{
			AsymmetricCryptography asy = new AsymmetricCryptography();
			prk = asy.Private_Key;
			pk = asy.Public_Key;
			txtpk.Text=pk;
			txtprk.Text=prk;
			btnea.Enabled=true;
			btnda.Enabled=true;
		btngs_Click(sender,  e);
		}

		private void btnea_Click(object sender, System.EventArgs e)
		{
			AsymmetricCryptography asy = new AsymmetricCryptography();
			asy.Private_Key = prk;
			asy.Public_Key=pk;
			txtcipher.Text = AsymmetricCryptography.Encript(txtplain.Text,asy.Public_Key);
			btnds.Enabled=false;
			btnes.Enabled= false;
			txtplain.Clear();
			
			
			
		
		}

		private void btnda_Click(object sender, System.EventArgs e)
		{
		
			AsymmetricCryptography asy = new AsymmetricCryptography();
			asy.Private_Key = prk;
			asy.Public_Key=pk;
			txtplain.Text = AsymmetricCryptography.Decript (txtcipher.Text,asy.Private_Key );
			btnes.Enabled= true;
			btnds.Enabled=true;
			
			txtcipher.Clear();
			
		}

		private void btngs_Click(object sender, System.EventArgs e)
		{
			SymetricCryptography sym = new SymetricCryptography();
			iv = sym.Initialization_Vector;
			sk = sym.Sessio_Key;
			txtiv.Text  = iv;
			txtsk.Text=sk;
			btnes.Enabled= true;
			btnds.Enabled=true;
		
		}

		private void btnes_Click(object sender, System.EventArgs e)
		{
			SymetricCryptography sym = new SymetricCryptography();
			sym.Initialization_Vector = iv;
			sym.Sessio_Key = sk;
			txtcipher.Text= sym.EncryptString(txtplain.Text);
			btnea.Enabled= false;
			btnda.Enabled= false;
			txtplain.Clear();
			
			
			
		
		}

		private void btnds_Click(object sender, System.EventArgs e)
		{
			SymetricCryptography sym = new SymetricCryptography();
			sym.Initialization_Vector = iv;
			sym.Sessio_Key = sk;

			txtplain.Text= sym.DecryptString(txtcipher.Text);
			btnda.Enabled=true;
			btnea.Enabled= true;
			
			txtcipher.Clear();

			
		
		}
	}
}