Implementation of TOTP for 2FA - how does it work?

In the article 'TOTP is easy', author Drew DeVault discusses the TOTP (Time-based One-Time Password) protocol, which is widely used in two-factor authentication systems. DeVault explains step by step how this system generates one-time passwords based on the current time and a secret key. He also highlights how TOTP can be easily implemented using various libraries, making it accessible for developers around the world. The article points out the benefits of using TOTP compared to traditional passwords, emphasizing the added layer of security it provides. Additionally, DeVault gives specific examples of TOTP's application in various software, which may inspire developers seeking modern security solutions for their applications.