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ASP.NET Web API Security Essentials
ASP.NET Web API Security Essentials

ASP.NET Web API Security Essentials: Take the security of your ASP.NET Web API to the next level using some of the most amazing security techniques around

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ASP.NET Web API Security Essentials

Chapter 2. Enabling SSL for ASP.NET Web API

In this chapter, we will discuss the implementation of SSL with ASP.NET Web API and authentication of users using SSL client certificates. Authentication schemes over plain HTTP are not secure. For example, basic authentication and forms authentication send plain texts, such as the username and password. So, to protect the plain texts from vulnerability, we use SSL and also authenticate clients using the SSL client certificates.

In this chapter, we will cover the following topics:

  • Enforcing SSL in a Web API controller
  • Using Client certificates in Web API

Enforcing SSL in a Web API controller

The Secure Sockets Layer (SSL) encryption protects the credentials exchanged between a client and a server. SSL enables a secure channel to transfer authentication messages in an encrypted format. The 128-bit and 256-bit SSL encryption techniques are more secure. Required 128-bit or 256-bit SSL is used if confidential or personal data is to be transmitted between a client and server. It is very difficult to decrypt the content that is encrypted using the 128-bit or 256-bit encryption technique.

SSL and Transport Level Security (TLS) use a combination of public key and symmetric key encryption. The SSL handshake is an exchange of messages during the initial communication between the server and client. Using public-key techniques allows the server to authenticate itself to the client during this handshake process.

RSA is a key exchange algorithm that governs the way the server and client determine the symmetric keys to use during an SSL handshake. The...

Using client certificates in Web API

To digitally identify whether a user is an authenticated user, client certificates are used. This is an enhanced security mechanism unlike using username and password for security as this is a simple validation. Client certificates allow a web application to authenticate its users by verifying a certificate that is provided by the client before the HTTP connection is established.

Creating an SSL Client Certificate

The following steps will create a test root authority and client certification for development and testing purpose:

  1. Open Developer Command Prompt for Visual Studio.
  2. Run the following command:
    makecert.exe -n "CN=Dev CA" -r -sv DevCA.pvk DevCA.cer
  3. Enter the certificate password when prompted by makecert for private key.

The preceding steps help in creating the Root Certification Authority certificate. Now let's install the DevCA.cer certificate on our Trusted Root Certification Authorities for the local machine store using Microsoft...

Summary

We just saw how to use SSL with ASP.NET Web API and learned how to implement the basic authentication and forms authentication using SSL.

You also learned about creating client certificates and configuring IIS to accept them.

You got to know how to use client certificates in Web API.

In the next chapter, let's integrate the ASP.NET Identity systems with the ASP.NET Web API. The ASP.NET Identity systems will help you to implement social logins to your application. It also enables you to store the user profile information such as dates of birth. ASP.NET Identity is available in ASP.NET MVC, Web Forms, and Web API templates.

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Key benefits

  • • This book has been completely updated for ASP.NET Web API 2.0 including the new features of ASP.NET Web API such as Cross-Origin Resource Sharing (CORS) and OWIN self-hosting
  • • Learn various techniques to secure ASP.NET Web API, including basic authentication using authentication filters, forms, Windows Authentication, external authentication services, and integrating ASP.NET’s Identity system
  • • An easy-to-follow guide to enable SSL, prevent Cross-Site Request Forgery (CSRF) attacks, and enable CORS in ASP.NET Web API

Description

This book incorporates the new features of ASP.NET Web API 2 that will help you to secure an ASP.NET Web API and make a well-informed decision when choosing the right security mechanism for your security requirements. We start by showing you how to set up a browser client to utilize ASP.NET Web API services. We then cover ASP.NET Web API’s security architecture, authentication, and authorization to help you secure a web API from unauthorized users. Next, you will learn how to use SSL with ASP.NET Web API, including using SSL client certificates, and integrate the ASP.NET Identity system with ASP.NET Web API. We’ll show you how to secure a web API using OAuth2 to authenticate against a membership database using OWIN middleware. You will be able to use local logins to send authenticated requests using OAuth2. We also explain how to secure a web API using forms authentication and how users can log in with their Windows credentials using integrated Windows authentication. You will come to understand the need for external authentication services to enable OAuth/OpenID and social media authentication. We’ll then help you implement anti-Cross-Site Request Forgery (CSRF) measures in ASP.NET Web API. Finally, you will discover how to enable Cross-Origin Resource Sharing (CORS) in your web API application.

Who is this book for?

This book is intended for anyone who has previous knowledge of developing ASP.NET Web API applications. Good working knowledge and experience with C# and.NET Framework are prerequisites for this book.

What you will learn

  • • Secure your web API by enabling Secured Socket Layer (SSL)
  • • Manage your application's user accounts by integrating ASP.NET's Identity system
  • • Ensure the security of your web API by implementing basic authentication
  • • Implement forms and Windows authentication to secure your web API
  • • Use external authentication such as Facebook and Twitter to authenticate a request to a web API
  • • Protect your web API from CSRF attacks
  • • Enable CORS in your web API to explicitly allow some cross-origin requests while rejecting others
  • • Fortify your web API using OAuth2
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Publication date, Length, Edition, Language, ISBN-13
Publication date : Nov 27, 2015
Length: 152 pages
Edition : 1st
Language : English
ISBN-13 : 9781785882210
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Microsoft
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Table of Contents

10 Chapters
1. Setting up a Browser Client Chevron down icon Chevron up icon
2. Enabling SSL for ASP.NET Web API Chevron down icon Chevron up icon
3. Integrating ASP.NET Identity System with Web API Chevron down icon Chevron up icon
4. Securing Web API Using OAuth2 Chevron down icon Chevron up icon
5. Enabling Basic Authentication using Authentication Filter in Web API Chevron down icon Chevron up icon
6. Securing a Web API using Forms and Windows Authentication Chevron down icon Chevron up icon
7. Using External Authentication Services with ASP.NET Web API Chevron down icon Chevron up icon
8. Avoiding Cross-Site Request Forgery Attacks in Web API Chevron down icon Chevron up icon
9. Enabling Cross-Origin Resource Sharing (CORS) in ASP.NET Web API Chevron down icon Chevron up icon
Index Chevron down icon Chevron up icon

Customer reviews

Rating distribution
Full star icon Full star icon Half star icon Empty star icon Empty star icon 2.3
(3 Ratings)
5 star 0%
4 star 0%
3 star 66.7%
2 star 0%
1 star 33.3%
k9 Dec 22, 2016
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
It was decent. Some of it was out dated.
Amazon Verified review Amazon
Goddati Anvesh Feb 28, 2022
Full star icon Full star icon Full star icon Empty star icon Empty star icon 3
I have gone through the book ,it felt like it ok for we can use it for security mechnisms.i feel like ok
Amazon Verified review Amazon
A. G. Feb 26, 2016
Full star icon Empty star icon Empty star icon Empty star icon Empty star icon 1
too many omissions and errors in the text.sample source fails because it attempts to write null values to non-nullable database fields.Check the bitoftech.com archives for "ASP.NET Identity". It's a much better resource and free.
Amazon Verified review Amazon
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