Custom OTP Grant Type in OAuth2 | Spring Authorization Server | Access Token Flow Explained

In this video, we will learn how to build a Custom OTP Grant Type in OAuth2 using Spring Authorization Server step by step. We will understand how the authentication flow works after OTP verification and how an access token is generated securely. This video covers: Custom OAuth2 Grant Type (OTP आधारित authentication) OtpAuthenticationToken (Custom Authentication Object) OtpAuthenticationConverter (HTTP Request → Authentication Object) OtpAuthenticationProvider (Authentication Logic) Secure Access Token Generation Flow Spring Boot + Spring Security OAuth2 Implementation If you want to build a real-world secure login system with OTP (2FA), this lecture is very important. This is part of our complete Spring Boot + Microservices + Security series on HindiCodeClass. Full Playlist: https://youtube.com/playlist?list=PLQvmjGiBPL9MuVNPSB-Zm3oEOmHVRzM0j&si=sN9aUckKFlTCi7dg Don’t forget to Like, Share, and Subscribe for more advanced backend development tutorials in Hindi.