---
title: "Encryption and Decryption in ASP.NET"
description: "In this article, I’m explaining about Encryption and Decryption in .NET"
author: "priyanka kushwaha"
published: 2015-02-27
updated: 2020-11-20
canonical: https://www.mindstick.com/articles/1620/encryption-and-decryption-in-asp-dot-net
category: ".net"
tags: ["c#", "asp.net", "security in .net", "encryption"]
reading_time: 2 minutes
---
# Encryption and Decryption in ASP.NET
\
In this [article](https://yourviews.mindstick.com/view/81489/kashmir-now-after-an-year-of-abrogation-of-article-370), I’m explaining about [Encryption and Decryption](https://www.mindstick.com/Articles/12911/encrypt-and-decrypt-data-with-c-sharp) in .NET
**Encryption:** is the [activity](https://www.mindstick.com/forum/23119/how-to-save-activity-state-in-android) of [converting data](https://www.mindstick.com/forum/33616/converting-data-of-nsdata-into-bytes-array-in-ios) or information into [code](https://yourviews.mindstick.com/view/85458/alan-turing-the-mastermind-behind-cracking-the-enigma-code-during-world-war-ii) or a [secret](https://www.mindstick.com/articles/23215/the-secret-to-a-compelling-logo-design) key.
**Decryption:** is the activity of making clear to converting from code into plain [text](https://www.mindstick.com/blog/301635/did-people-reinvent-texting-to-express-the-full-range-of-emotions).
## Example:
## Create a [Class](https://www.mindstick.com/blog/165/generic-class-in-c-sharp).cs
```
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Security.Cryptography;using System.IO;using System.Text; /// /// Summary description for Class1/// public class Class1{ string Encryptionkey = "123"; public string Encrypt(string originalText) { byte[] originalbytes = Encoding.Unicode.GetBytes(originalText); using (Aes encryptor = Aes.Create()) { Rfc2898DeriveBytes pdb = new Rfc2898DeriveBytes(Encryptionkey, new Byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x76 }); encryptor.Key = pdb.GetBytes(32); encryptor.IV = pdb.GetBytes(16); using (MemoryStream ms = new MemoryStream()) { using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateEncryptor(), CryptoStreamMode.Write)) { cs.Write(originalbytes, 0, originalbytes.Length); cs.Close(); } originalText = Convert.ToBase64String(ms.ToArray()); } } return originalText; } public string Decrypt(string cipherText) { Byte[] cipherBytes = Convert.FromBase64String(cipherText); using (Aes encryptor = Aes.Create()) { Rfc2898DeriveBytes pbd = new Rfc2898DeriveBytes(Encryptionkey, new Byte[] { 0x49, 0x76, 0x61, 0x6e, 0x20, 0x4d, 0x65, 0x64, 0x76, 0x65, 0x64, 0x76 }); encryptor.Key = pbd.GetBytes(32); encryptor.IV = pbd.GetBytes(16); using (MemoryStream ms = new MemoryStream()) { using (CryptoStream cs = new CryptoStream(ms, encryptor.CreateDecryptor(), CryptoStreamMode.Write)) { cs.Write(cipherBytes, 0, cipherBytes.Length); cs.Close(); } cipherText = Encoding.Unicode.GetString(ms.ToArray()); } } return cipherText;} public Class1() { // // TODO: Add constructor logic here // }}
```
**Create Default.aspx [file](https://www.mindstick.com/articles/59/encrypting-and-decrypting-files-using-c-sharp)**
```
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
```
**Write in Default.aspx.cs**
```
using System;using System.Collections.Generic;using System.Linq;using System.Web;using System.Web.UI;using System.Web.UI.WebControls;public partial class _Default : System.Web.UI.Page{ Class1 method = new Class1(); protected void Page_Load(object sender, EventArgs e) { } protected void btnEncrypt_Click(object sender, EventArgs e) { lblEnc.Text =method.Encrypt(txtPassword.Text.Trim()); btnDecrypt.Enabled = true; } protected void btnDecrypt_Click(object sender, EventArgs e) { lblDec.Text = method.Decrypt(lblEnc.Text.Trim()); }}
```
**[Output](https://www.mindstick.com/interview/34427/explain-the-output-in-angular):**
---
Original Source: https://www.mindstick.com/articles/1620/encryption-and-decryption-in-asp-dot-net
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