Skip to main content

How to “Encrypt Decrypt” Connection String in “Web.config” Asp.Net C#?

In this post, I am going to share the “How to encryption a connection string of “web.config file in ASP.Net MVC C# using “DataProtectionProviderdata protection section as,

ConfigSection.SectionInformation.ProtectSection("DataProtectionConfigurationProvider");
//Step 1:  This below code is use to Encrypt connection string.

namespace EncryptDecrypt_WebConfig
{
    public class MvcApplication : System.Web.HttpApplication
    {
        protected void Application_Start()
        {
            AreaRegistration.RegisterAllAreas();
            FilterConfig.RegisterGlobalFilters(GlobalFilters.Filters);
            RouteConfig.RegisterRoutes(RouteTable.Routes);
            BundleConfig.RegisterBundles(BundleTable.Bundles);

            //ENCRYPT DECRYPT WEB CONFIG SECTIONS.
            EncryptDecryptWebConfigSettings();          
        }

        /// <summary>
        ///  ENCRYPT DECRYPT WEB CONFIG SECTIONS.
        /// </summary>
        private static void EncryptDecryptWebConfigSettings()
        {
            // This is used to get application configuration.
            Configuration configurations = WebConfigurationManager.OpenWebConfiguration("~");

            // Get connection string of app settings.
            ConnectionStringsSection connSectionString = (ConnectionStringsSection)configurations.GetSection("connectionStrings");
            AppSettingsSection appSettingSection = (AppSettingsSection)configurations.GetSection("appSettings");

            var settingInfo = connSectionString.SectionInformation;
            //This is used to protect multiple sections in web.config
            if (!settingInfo.IsProtected)
            {
                settingInfo.ProtectSection("DataProtectionConfigurationProvider");
                settingInfo.ForceSave = true;
            }
            if (!settingInfo.IsProtected)
            {
                settingInfo.ProtectSection("DataProtectionConfigurationProvider");
                settingInfo.ForceSave = true;
            }

            // Save modified config settings file.
            configurations.Save(ConfigurationSaveMode.Modified);
        }
    }
}



//Step2 : Before Encrypted connection string look like below code.

<connectionStrings>
    <add name="connectionStrings" connectionString="Data Source=.; Initial Catalog=TestDB;User ID=sa;Password=pwd" />
</connectionStrings>


//Step 3: After Encrypted connection string look like below code

  <connectionStrings configProtectionProvider="DataProtectionConfigurationProvider">
    <EncryptedData>
      <CipherData>     <CipherValue>AQAAANCMnd8BFdERjHoAwE/Cl+sBAAAA3KU9jdKx/Uaoa3JA+RE11wQAAAACAAAAAAAQZgAAAAEAACAAAACYC3M8esjUFKf448qYmP5u7mQz0VDApy+jBXwUbGf9WwAAAAAOgAAAAAIAACAAAAAL+ZLNTuvDLGLG2qlYpgbpBhnW+a8JsJNdSA+U1lz/drABAAAc/1SULZLGOL6ke7q1xLzBCyyCFmJXNz1Gb2eLDF1CbpzMDF4FObDBhYfhRMxu6SmaGgPIUtWUkQZLIkuKi5sJXzvLVnxO6c6OzQpiWR0bSrQe55xqyWDEf9LhPpXzjKTH/IFFj8IHCc8ojBoRIQzdzenKg3R7wewmuee7IpdBMbFZZtofHA3wYV4x2mmyLyfK4VahEZUhslsb+bkqFss18cSp7tY++2jCUmVS7U9rm+qv2tCsN+AfyTD1eyx7tzQsJN2tlNy2F86kjiCA7KFl/Bsunt4O8Ig935YfvmV/UK1fl33bZDof/8HNbzc3qKG+tz//0ccyhBbapb3gPre4ppCiITeVBysQF+fCl98AGFKZTGaL9NIdHTEkw+Q3PoD8LEO1LeuifEXqi2/Us+/YNb5CF4NgXc1XY86Q+12hh2s711RGtBRkmQFeKt7R/ZGIP+zxgkY7OemJhOARBN44uMn6DkdpxjloeN7FDdB6aXUnoRmkDjYxIkprqYRrdsVr4REo46SPge7qGT1ox1zafJuUxcQvL8xawCi3PrrkAyuC6jKjuwlxgGO1OgpBvDVAAAAAOMoxt1HPGzwdrrlqZJiV14ZzwZMuBwBy3882NGEwqKqU5yKcbRCEFCEmkpapyrTEJ3EaQVqWkgjhOJb4o/aovw==
</CipherValue>
      </CipherData>
    </EncryptedData>
  </connectionStrings>

//The ASP.Net code update code automatically after encrypted connection string. 
//You can see the above code.


//Step 4 : You can easily access connection string in your application i.e.

string conn = ConfigurationManager.ConnectionStrings["connectionString"].ToString();

Reference links,

 I hope you are enjoying with this post! Please share with you friends. Thank you!!
By Anil Singh | Rating of this article (*****)

Popular posts from this blog

nullinjectorerror no provider for httpclient angular 17

In Angular 17 where the standalone true option is set by default, the app.config.ts file is generated in src/app/ and provideHttpClient(). We can be added to the list of providers in app.config.ts Step 1:   To provide HttpClient in a standalone app we could do this in the app.config.ts file, app.config.ts: import { ApplicationConfig } from '@angular/core'; import { provideRouter } from '@angular/router'; import { routes } from './app.routes'; import { provideClientHydration } from '@angular/platform-browser'; //This (provideHttpClient) will help us to resolve the issue  import {provideHttpClient} from '@angular/common/http'; export const appConfig: ApplicationConfig = {   providers: [ provideRouter(routes),  provideClientHydration(), provideHttpClient ()      ] }; The appConfig const is used in the main.ts file, see the code, main.ts : import { bootstrapApplication } from '@angular/platform-browser'; import { appConfig } from ...

Top 15+ Angular 17 Interview Questions Answers | For Experienced Professionals as well

G Google team released the latest version of Angular – Angular 17 on November 6, 2023, creating a significant milestone for the super fast front-end development. What Are the New Features in Angular 17? 1.       Angular 17 is the highly anticipated release for the community, bringing many new exciting features, updates, and improvements. 2.       New Syntax for Control Flow in Templates - new @if, @switch, @for, @case, @empty @end control flow syntax 3.       Deferred Loading - @defer partial template 4.       The Angular signals API 5.       Angular SSR and client hydration 6.       Automatic Migration to Build-in Control Flow 7.       Build Performance with ESBuild 8.       By default, set this newly generated component as a standalone, and now we don't have an app module file. To use (ng...

25 Best Vue.js 2 Interview Questions and Answers

What Is Vue.js? The Vue.js is a progressive JavaScript framework and used to building the interactive user interfaces and also it’s focused on the view layer only (front end). The Vue.js is easy to integrate with other libraries and others existing projects. Vue.js is very popular for Single Page Applications developments. The Vue.js is lighter, smaller in size and so faster. It also supports the MVVM ( Model-View-ViewModel ) pattern. The Vue.js is supporting to multiple Components and libraries like - ü   Tables and data grids ü   Notifications ü   Loader ü   Calendar ü   Display time, date and age ü   Progress Bar ü   Tooltip ü   Overlay ü   Icons ü   Menu ü   Charts ü   Map ü   Pdf viewer ü   And so on The Vue.js was developed by “ Evan You ”, an Ex Google software engineer. The latest version is Vue.js 2. The Vue.js 2 is very similar to Angular because Evan ...

39 Best Object Oriented JavaScript Interview Questions and Answers

Most Popular 37 Key Questions for JavaScript Interviews. What is Object in JavaScript? What is the Prototype object in JavaScript and how it is used? What is "this"? What is its value? Explain why "self" is needed instead of "this". What is a Closure and why are they so useful to us? Explain how to write class methods vs. instance methods. Can you explain the difference between == and ===? Can you explain the difference between call and apply? Explain why Asynchronous code is important in JavaScript? Can you please tell me a story about JavaScript performance problems? Tell me your JavaScript Naming Convention? How do you define a class and its constructor? What is Hoisted in JavaScript? What is function overloadin...

JavaScript date format yyyy-mm-dd

We can declare a date in the following ways - 1.       new Date(); 2.       new Date(value); 3.       new Date(dateString); 4.       new Date(year, month[, day[, hour[, minutes[, seconds[, milliseconds]]]]]); To getDate () method returns the day in the specified date. To getMonth () method returns the month in the specified date. To getFullYear() method returns the year of the specified date. Example 1 related to date format JavaScript - DD/ MM/YYYY var dateFormattDDMMYYY = function (yourDate) {     var date = new Date(yourDate);     var dd = date.getDate();     var mm = date.getMonth() + 1;     var yyyy = date.getFullYear();     if (dd < 10) {         dd = '0' + dd;     }     if (mm < 10)...