C# Basic Authentication with ASP.NET MVC

In this tutorial, I’ll show you how to implement basic authentication using ASP.NET MVC.

Basic Authentication is an important security mechanism that allows users to access restricted resources on Ib servers without having to enter a username and password. This tutorial will teach you how to use the built in functionality provided by ASP.NET MVC5.

HTTP Authentication Basic is the most simple approach to control access to websites. Although Basic Authentication can be rarely used because there is an inherent security flaw, it is acceptable for solution solutions at the internal and private network level, especially for IoT systems as an equilibrium of cost and function. We will discuss the basics of authentication in .NET Core (renamed .NET 5) project. The complete solution can be found on GitHub.

Implement the AuthorizationFilterAttribute Filter

I am here to show some of the basics of an ASP.NET based Web Application. We talked a little bit about basic authentication and authorization in Web APIs here. In this article, we discussed these points.

I will also show you how to use the Authorize attribute to restrict access to certain actions within an application.

using System;
using System.Configuration;
using System.Linq;
using System.Net;
using System.Net.Http;
using System.Web.Http;
using System.Web.Http.Controllers;
using System.Web.Http.Filters;

using Common.Exceptions;
using Common.Helpers;
using DataCommon.Models;
using NLog;

namespace Api.Filters
{
    public class AccessRestrictionFilterAttribute : AuthorizationFilterAttribute
    {
        public override void OnAuthorization(HttpActionContext actionContext)
        {
            try
            {
                var accessLevel = GetRequestAccessLevel(actionContext);
                if (accessLevel.MinimumAccessLevel == AccessLevelAttribute.AccessLevel.Open)
                {
                    //no api or auth header present, only url provided Json Web Token
                    
                    return;
                }

                var authorizationHeader = actionContext.Request.Headers.Authorization;

                var headerValidator = new AuthenticationHeaderValidator(actionContext.Request);
                AuthenticationData authenticationData = headerValidator.ParseAuthorizationHeader(authorizationHeader);

                var requestorAccessLevel = GetRequestorAccessLevel(authenticationData.AuthenticationType, actionContext.Request);

                if (requestorAccessLevel == AccessLevelAttribute.AccessLevel.Account && authenticationData.AccountId == 0)
                    authenticationData.AccountId = GetAccountIdFromConfig(authenticationData.ApiKey);

                // Check to find if the requestorAccessLevel compatable with accessLevel
                ValidateRequestedAccess(accessLevel.MinimumAccessLevel, requestorAccessLevel, actionContext.Request);

                // if the requestor accessLevel is Account or the access point requires Account, then AccountId is not provided
                if ((requestorAccessLevel == AccessLevelAttribute.AccessLevel.Account || accessLevel.AccountRequired) && (authenticationData.AccountId == authenticationData.NoAccountId))
                    throw new HttpResponseException(HttpResponseHelper.CreateHttpResponseMessage(actionContext.Request, HttpStatusCode.BadRequest, "Invalid API Key."));

                var controller = (IAuthorized)actionContext.ControllerContext.Controller;
                controller.SetAuthenticationData(authenticationData);
            } 
            catch (HttpResponseException ex)
            {
                ex.Response.Headers.Add("X-AuthorizationFailed", "True");
                actionContext.Response = ex.Response;
            } 
            catch (Exception ex)
            {
                ElmahRaiser.RaiseException(ex);
                _log.WarnException("Authorization exception:", ex);
                var response = HttpResponseHelper.CreateHttpResponseMessage(actionContext.Request, HttpStatusCode.InternalServerError, "Unexpected error.");
                response.Headers.Add("X-AuthorizationFailed", "True");
                actionContext.Response = response;
            }
            finally
            {
                base.OnAuthorization(actionContext);
            }
        }
        private AccessLevelAttribute GetRequestAccessLevel(HttpActionContext actionContext)
        {
            var actionAccessLevel = actionContext.ActionDescriptor.GetCustomAttributes<AccessLevelAttribute>().SingleOrDefault();
            var controllerAccessLevel = actionContext.ActionDescriptor.ControllerDescriptor.GetCustomAttributes<AccessLevelAttribute>().SingleOrDefault();
            var accessLevel = actionAccessLevel ?? controllerAccessLevel;
            if (accessLevel == null)
                accessLevel = AccessLevelAttribute.GetDefaultAccessLevel();
            return accessLevel;
        }

        public static AccessLevelAttribute.AccessLevel GetRequestorAccessLevel(AuthenticationType type, HttpRequestMessage request)
        {
            switch (type)
            {
                case AuthenticationType.InternalUseTool:
                    return AccessLevelAttribute.AccessLevel.InternalUseTool;
                case AuthenticationType.Private:
                    return AccessLevelAttribute.AccessLevel.Private;
                case AuthenticationType.Partner:
                    return AccessLevelAttribute.AccessLevel.Partner;
                case AuthenticationType.Account:
                    return AccessLevelAttribute.AccessLevel.Account;
            }

            throw new HttpResponseException(HttpResponseHelper.CreateHttpResponseMessage(request, HttpStatusCode.BadRequest, "Invalid API Key."));
        }
    }
}

To start off, let’s take a look at what I need to do to set up our project. First, I need to install Visual Studio 2013 Express Edition. Next, I need to download the latest version of the .Net Framework 4.6.1 (which includes the new Ib API 2.0). Finally, I need to add some NuGet packages to our solution.

Tell me the basics of authentication?

Basic Authentication is a simple authentication scheme that can also be implemented using the HTTP protocol. This security protocol allows users and browser users to access the Internet through a login or password. Basic authentication requires no cookies, session identification, or page log in. The authentication method checks the HTTP authorization headers. An authorized header must include the word Basic. The Basic name follows immediately the spacing space and base64-encoded strings that could then be decoded as username/password.

What is basic authentication in C#?

Basic authentication works the same as the following. The response contains an HTTP-Authorate-header showing the support for basic authentication. The client then sends the next request, putting the Client credentials on the Authorisation header.

How do I authenticate request in C#?

Basic authentication with the Web API. Method for validating users. Sending Ajx requests for web API calls. Is Web API called by jQuery JAX by putting headers? AJAX code added a new attribute named headers. It contains btoa(), an authorization that encrypts user names/password. Conclusions.

What is basic authentication method?

Basic authentication is a method by which a web server can request a user name and password. If you use Authenticator Basic, the user must encode a cryptic string on every request.

What is basic authentication example?

Authentication Basic: The client sends requests through the Authorization header containing the word Basic followed by an address and a non-encrypted password: To use username/paypal/w0rder, a client will send.

What is Basic Auth vs OAuth?

OAuth does not share user data or user name and password with any other users unless the password was shared. Instead, OAuth uses a token for identifying customers and providers.

What is basic token authentication?

Authenticated token authentication uses the security of token backed requests that are accompanied by an authentication token that the server validates and then returns to.

How do I set up basic authentication?

Click on Authentications in Security. Choose basic authentication on the Authentication pane, then click the Action pane to activate.

How do I add basic authentication to .NET Core API?

Basic authentication works by adding authorization headers to HTTP requests. The Values on Authorization header are basic and followed by a space followed by username and password, separated by colons. The password is stored in Base64.

How do you implement basic authentication?

Simple authorization can be defined easily. In the SecurityDefinitions section, add type: Basic as well as an arbitrary name (a simpleAuth example here). Make security available by implementing the security section of APIs.

What is basic authentication type?

Basic authentication provides a way for a user agent to provide a username and a password to make a website. In use of Basic Authentication, users add the encoded strings to the Authorisation header for all requests made.

What is HTTP basic authentication and how it works?

Basic HTTP authentication provides an easy challenges and responses mechanism for the server to request authentication information from its clients (username and password). The client provides authentication details in a header for authorisation. All data is encrypted using the Base64 encryption algorithm.

How do I set basic authentication in HTTP?

WP REST API: Setup and Use Basic Authentication C#. See different methods for authentication for using REST API plugins. Configure username and password for servers. Send www authenticate requests by Postman. Send a verified response using the JavaScript framework. Send authenticated requests via command line.

What is HTTP authentication?

Authentications are methods to determine if a client may have access to resources. The protocol HTTP allows for the verification of the security of a resource. Clients are typically asked for anonymous requests that do not include any authenticator data on them.

How do I Authenticate HTTP request?

Clients attempting to log onto the server can do so by incorporating Authorization Request headers into credentials. Typically clients will give the user password prompt and send requests with an authorization header.

How do I add Basic Authentication to .NET Core API?

Basic authentication is performed via the introduction in HTTP request authorization headers. The Authorization headers have an initial – base value followed by a space followed by a password separated with a colon. This is encoded with Base64.

How do you implement Basic Authentication?

Basic authentications can be defined. In globalsecuritydefinitions, a field with a basic type and a arbitrary name can be added. Apply security to a specific API operation with a security section.

How do I add Basic Authentication to IIS?

In the Iss pane, select Role Services, then select Role Services. Choose Role Services from Role Services Wizard and choose Basic Authentication before proceeding. Select a new installation option and then click Installation. On the Results page, click Close.

What are different types of authentication in ASP.NET Core?

Authorisation for ASPNET Core. Authentication. System of authenticity. Standard authentication system. Authentication – Option for authenticator and password. Authentication Middleware and Software.

How does basic authentication work in REST API?

The User ID is entered in a header on an HTTP header. Procedure. Add an underscore to the username and password. … Encode the username/password to the base64 encoded format. Input the encoded username and password into the HTTP authorization header.

How does basic authentication work in web API?

Basic authentication operates like this. Upon request, it contains an HTTP-Authentication header that indicates that this server can be used for basic authentication. Another request is sent by the client requesting the client credentials to be displayed under the Authorization.

Why do we use basic authentication?

The security of your information should always include a simple password. The basic authentication process allows the Webserver to send user credentials to each page on any web page, and not just to the corresponding login page.

What is HTTP basic authentication and how it works in rest?

Basic authentication is mainly HTTP authentication and is the easiest way of security for REST APIs. This enables a base-64 encoded password and username that will be logged into the HTTP header.

How is basic authentication?

Basic authentication is a way in which an HTTP user credentials agent provides a username or password during requests. Using www authenticate header, an encrypted string must be added for each authorization request.

How does basic authentication work in API?

In Authentication Basic, a user can send an application to Edge’s Edge API using their Apigee email or password. Basic authentication is the weakest authentication mechanism among the available authentication methods. You don’t have a password for your account.

What is Basic authentication header?

A basic authentication scheme is used within a standard HTTP protocol. The client sends HTTP requests to an Authorization header containing the word Basic Word followed by spaces and base 64 coded string username and password.

How do I create a Basic authentication header?

Create soapUI HTTP based authentication headers. Under Requests, select the Headers menu. Click + to add headers. The header should have Authorization as their title. . In the box with values enter the word Basic as well as your base64-coded user name or password.

What is the correct format of Authorization header in Basic authentication?

Basic Auth: The server sends HTTP requests using authorization headers which are followed by a space and a basic64 encoded password. In some cases, the customer could send a password to the server to authorize the user.

How do I get Basic authentication in header curl?

To provide basic authentication credentials via curl, you should use command line option: -u logins: passwords. Curl transforms the user name and password pairs into a base64 encode and adds the header for authentication: basic [token] on request.

What does basic auth do?

Basic authentication is a mechanism that a browser can use in order that a user can provide a username and password. The Basic Authentication feature allows the application’s user the use of an encoded string in its header.

What is basic auth in API?

Basic authentication allows you to send requests to Edge API using your gmail address. Basic identity authentication is a less secure option among the available options. You don’t have a password to your password that can be encrypted by the Base64 code itself.

What is the difference between OAuth and basic auth?

OAuth uses a different password than Basic Auth, which requires that you share your password with other users that need your login information. Instead, the system allows users to verify their identity with a token of authorization.

How do I pass HttpClient basic authentication?

Tell me the standard method for Authentication in Http Client using CredentialsProvider: credentialsprovider. Providers = New BasicCredentialsprovide. SettingCredentialsAuthScope.