Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By : Mark J. Price
Book Image

C# 9 and .NET 5 – Modern Cross-Platform Development - Fifth Edition

By: Mark J. Price

Overview of this book

In C# 9 and .NET 5 – Modern Cross-Platform Development, Fifth Edition, expert teacher Mark J. Price gives you everything you need to start programming C# applications. This latest edition uses the popular Visual Studio Code editor to work across all major operating systems. It is fully updated and expanded with a new chapter on the Microsoft Blazor framework. The book’s first part teaches the fundamentals of C#, including object-oriented programming and new C# 9 features such as top-level programs, target-typed new object instantiation, and immutable types using the record keyword. Part 2 covers the .NET APIs, for performing tasks like managing and querying data, monitoring and improving performance, and working with the file system, async streams, serialization, and encryption. Part 3 provides examples of cross-platform apps you can build and deploy, such as websites and services using ASP.NET Core or mobile apps using Xamarin.Forms. The best type of application for learning the C# language constructs and many of the .NET libraries is one that does not distract with unnecessary application code. For that reason, the C# and .NET topics covered in Chapters 1 to 13 feature console applications. In Chapters 14 to 20, having mastered the basics of the language and libraries, you will build practical applications using ASP.NET Core, Model-View-Controller (MVC), and Blazor. By the end of the book, you will have acquired the understanding and skills you need to use C# 9 and .NET 5 to create websites, services, and mobile apps.
Table of Contents (23 chapters)
22
Index

Understanding the vocabulary of protection

There are many techniques to protect your data; below we'll briefly introduce six of the most popular ones and you will see more detailed explanations and practical implementations throughout this chapter:

  • Encryption and decryption: These are a two-way process to convert your data from clear text into crypto-text and back again.
  • Hashes: This is a one-way process to generate a hash value to securely store passwords, or can be used to detect malicious changes or corruption of your data.
  • Signatures: This technique is used to ensure that data has come from someone you trust by validating a signature that has been applied to some data against someone's public key.
  • Authentication: This technique is used to identify someone by checking their credentials.
  • Authorization: This technique is used to ensure that someone has permission to perform an action or work with some data by checking the roles or groups...