Boost Your Web App Security with JSON Web Tokens: Learn How They Work and Why You Need Them
Introduction From this article you will understand the notion of JWT, its role in the modern webdevelopment, and the work of technology behind it. JSON Web Token (JWT) is a set of encrypted data, with the help of which it is possible to safely store and transmit information necessary for the identification of the user in the requested resources (servers and applications) and, as a result, the delivery of necessary and valid information in response. This approach is a popular method of authentication and a generally accepted standard for creating access tokens based on JSON (RFC 7519).
Principle of performance of JWT So, what is JWT, and what is it for? Here are simple explanations in pictures. Imagine that you are supposed to undergo a medical examination in a local clinic before starting a new job. For this, it is necessary to pay a visit to 3 doctors from different departments and get the results of the examination. Obviously, the first thing you need to do is to go to the registration desk and get a document that states who you are, what exactly you need to examine and the reason for it. (See Pic.1)