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A, B:    Design and Implement a C# windows form application to encrypt and decrypt text....

A, B:    Design and Implement a C# windows form application to encrypt and decrypt text. The application use to receive a string and display another encrypted string. The application also decrypt the encrypted string.
The approach for encryption/decryption is simple one i.e. to encrypt we will add 1 to each character, so that "hello" would become "ifmmp", and to decrypt we would subtract 1 from each character.   
C:   Test and evaluate application by applying different strings.   
   Design user friendly Graphical User Interface (GUI) to serve the purpose.
   You can adopt more powerful approach and algorithm for text Encryption/Decryption.

Solutions

Expert Solution

Here is the answer for your question in C# Programming Language.

Kindly upvote if you find the answer helpful.

####################################################################

CODE :

form1.cs

using System;

using System.Collections.Generic;

using System.ComponentModel;

using System.Data;

using System.Drawing;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

using System.Windows.Forms;

namespace EncryptDecrypt

{

       public partial class Form1 : Form

       {

              public Form1()

              {

                     InitializeComponent();

              }

              private void encryptText(object sender, EventArgs e)

              {

                     //Gets original text from text box for encryption

                     string originalTxt = originalText1.Text;

                     string encryptedTxt = "";

                     //If it has more than one character

                     if(originalTxt.Length > 0)

                     {

                           //Moves each character to next character and adds toa new string

                           foreach(char eachChar in originalTxt)

                           {

                                  encryptedTxt += (char)((int)eachChar + 1);

                           }

                           //Sets new string to encrypted text box

                           encryptedText1.Text = encryptedTxt;

                     }

              }

              private void clearEncryption(object sender, EventArgs e)

              {

                     //Clears encryption text boxes

                     originalText1.Text = "";

                     encryptedText1.Text = "";

              }

              private void decryptText(object sender, EventArgs e)

              {

                     //Gets encrypted text from text box for decryption

                     string encryptedTxt = encryptedText2.Text;

                     string originalTxt = "";

                     //If the encrypted string has atleast one character

                     if (encryptedTxt.Length > 0)

                     {

                           //Moves each character to one letter back and adds to new string

                           foreach (char eachChar in encryptedTxt)

                           {

                                  originalTxt += (char)((int)eachChar - 1);

                           }

                           //Sets original text box with original text

                           originalText2.Text = originalTxt;

                     }

              }

              private void clearDecryption(object sender, EventArgs e)

              {

                     //Clears decryption text boxes

                     encryptedText2.Text = "";

                     originalText2.Text = "";                

              }

       }

}

#####################################################################

Form1.Designer.cs

namespace EncryptDecrypt

{

                partial class Form1

                {

                                /// <summary>

                                /// Required designer variable.

                                /// </summary>

                                private System.ComponentModel.IContainer components = null;

                                /// <summary>

                                /// Clean up any resources being used.

                                /// </summary>

                                /// <param name="disposing">true if managed resources should be disposed; otherwise, false.</param>

                                protected override void Dispose(bool disposing)

                                {

                                                if (disposing && (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.label1 = new System.Windows.Forms.Label();

                                                this.label2 = new System.Windows.Forms.Label();

                                                this.label3 = new System.Windows.Forms.Label();

                                                this.originalText1 = new System.Windows.Forms.TextBox();

                                                this.label4 = new System.Windows.Forms.Label();

                                                this.label5 = new System.Windows.Forms.Label();

                                                this.encryptedText1 = new System.Windows.Forms.TextBox();

                                                this.encryptBtn = new System.Windows.Forms.Button();

                                                this.clearBtn1 = new System.Windows.Forms.Button();

                                                this.label6 = new System.Windows.Forms.Label();

                                                this.label7 = new System.Windows.Forms.Label();

                                                this.encryptedText2 = new System.Windows.Forms.TextBox();

                                                this.originalText2 = new System.Windows.Forms.TextBox();

                                                this.decryptBtn = new System.Windows.Forms.Button();

                                                this.clearBtn2 = new System.Windows.Forms.Button();

                                                this.SuspendLayout();

                                                //

                                                // label1

                                                //

                                                this.label1.AutoSize = true;

                                                this.label1.Font = new System.Drawing.Font("Times New Roman", 18F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label1.ForeColor = System.Drawing.Color.Blue;

                                                this.label1.Location = new System.Drawing.Point(109, 9);

                                                this.label1.Name = "label1";

                                                this.label1.Size = new System.Drawing.Size(375, 26);

                                                this.label1.TabIndex = 0;

                                                this.label1.Text = "ENCRYPION AND DECRYPTION";

                                                //

                                                // label2

                                                //

                                                this.label2.AutoSize = true;

                                                this.label2.BackColor = System.Drawing.Color.Lime;

                                                this.label2.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label2.ForeColor = System.Drawing.Color.FromArgb(((int)(((byte)(192)))), ((int)(((byte)(64)))), ((int)(((byte)(0)))));

                                                this.label2.Location = new System.Drawing.Point(12, 55);

                                                this.label2.Name = "label2";

                                                this.label2.Size = new System.Drawing.Size(141, 22);

                                                this.label2.TabIndex = 1;

                                                this.label2.Text = "Encryption Part";

                                                //

                                                // label3

                                                //

                                                this.label3.AutoSize = true;

                                                this.label3.BackColor = System.Drawing.Color.Yellow;

                                                this.label3.Font = new System.Drawing.Font("Times New Roman", 14.25F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label3.ForeColor = System.Drawing.SystemColors.ControlText;

                                                this.label3.Location = new System.Drawing.Point(12, 203);

                                                this.label3.Name = "label3";

                                                this.label3.Size = new System.Drawing.Size(141, 22);

                                                this.label3.TabIndex = 2;

                                                this.label3.Text = "Decryption Part";

                                                //

                                                // originalText1

                                                //

                                                this.originalText1.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.originalText1.Location = new System.Drawing.Point(129, 104);

                                                this.originalText1.Name = "originalText1";

                                                this.originalText1.Size = new System.Drawing.Size(141, 26);

                                                this.originalText1.TabIndex = 3;

                                                //

                                                // label4

                                                //

                                                this.label4.AutoSize = true;

                                                this.label4.Font = new System.Drawing.Font("Times New Roman", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label4.ForeColor = System.Drawing.SystemColors.ControlText;

                                                this.label4.Location = new System.Drawing.Point(12, 104);

                                                this.label4.Name = "label4";

                                                this.label4.Size = new System.Drawing.Size(97, 19);

                                                this.label4.TabIndex = 4;

                                                this.label4.Text = "Original Text";

                                                //

                                                // label5

                                                //

                                                this.label5.AutoSize = true;

                                                this.label5.Font = new System.Drawing.Font("Times New Roman", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label5.ForeColor = System.Drawing.SystemColors.ControlText;

                                                this.label5.Location = new System.Drawing.Point(12, 148);

                                                this.label5.Name = "label5";

                                                this.label5.Size = new System.Drawing.Size(111, 19);

                                                this.label5.TabIndex = 5;

                                                this.label5.Text = "Encrypted Text";

                                                //

                                                // encryptedText1

                                                //

                                                this.encryptedText1.Enabled = false;

                                                this.encryptedText1.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.encryptedText1.Location = new System.Drawing.Point(129, 149);

                                                this.encryptedText1.Name = "encryptedText1";

                                                this.encryptedText1.Size = new System.Drawing.Size(141, 26);

                                                this.encryptedText1.TabIndex = 6;

                                                //

                                                // encryptBtn

                                                //

                                                this.encryptBtn.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.encryptBtn.Location = new System.Drawing.Point(300, 91);

                                                this.encryptBtn.Name = "encryptBtn";

                                                this.encryptBtn.Size = new System.Drawing.Size(103, 33);

                                                this.encryptBtn.TabIndex = 7;

                                                this.encryptBtn.Text = "Encrypt";

                                                this.encryptBtn.UseVisualStyleBackColor = true;

                                                this.encryptBtn.Click += new System.EventHandler(this.encryptText);

                                                //

                                                // clearBtn1

                                                //

                                                this.clearBtn1.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.clearBtn1.Location = new System.Drawing.Point(300, 149);

                                                this.clearBtn1.Name = "clearBtn1";

                                                this.clearBtn1.Size = new System.Drawing.Size(103, 33);

                                                this.clearBtn1.TabIndex = 8;

                                                this.clearBtn1.Text = "Clear";

                                                this.clearBtn1.UseVisualStyleBackColor = true;

                                                this.clearBtn1.Click += new System.EventHandler(this.clearEncryption);

                                                //

                                                // label6

                                                //

                                                this.label6.AutoSize = true;

                                                this.label6.Font = new System.Drawing.Font("Times New Roman", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label6.ForeColor = System.Drawing.SystemColors.ControlText;

                                                this.label6.Location = new System.Drawing.Point(12, 246);

                                                this.label6.Name = "label6";

                                                this.label6.Size = new System.Drawing.Size(111, 19);

                                                this.label6.TabIndex = 9;

                                                this.label6.Text = "Encrypted Text";

                                                //

                                                // label7

                                                //

                                                this.label7.AutoSize = true;

                                                this.label7.Font = new System.Drawing.Font("Times New Roman", 12F, System.Drawing.FontStyle.Bold, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                                                this.label7.ForeColor = System.Drawing.SystemColors.ControlText;

                                                this.label7.Location = new System.Drawing.Point(12, 286);

                                                this.label7.Name = "label7";

                                                this.label7.Size = new System.Drawing.Size(97, 19);

                                                this.label7.TabIndex = 10;

                                                this.label7.Text = "Original Text";

                                                //

                                                // encryptedText2

                                                //

                                                this.encryptedText2.Font = new System.Drawing.Font("Microsoft Sans Serif", 12F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));

                              &nbs

venereology answered 6 months ago
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