Spring Full-Stack Practical Cases

Mar 10, 2026 · Backend Development

Implement Multi-Factor Authentication in Spring Boot 3 with One‑Time Tokens

This guide explains how to add MFA to a Spring Boot 3 application using password plus one‑time token authentication, covering the theory of MFA factors, required dependencies, API definitions, security configuration, token‑generation handling, custom login pages, and the complete verification flow with code snippets and screenshots.