Milan Jovanović • 2/28/2026

How to Implement Two-Factor Authentication in ASP.NET Core

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This article provides a detailed, practical tutorial for developers on adding Two-Factor Authentication (2FA) to ASP.NET Core applications. It explains the TOTP algorithm, demonstrates generating secure secret keys and QR codes for authenticator apps, and covers the correct setup and validation flow to improve login security.

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#security #authentication #Aspnet Core
How to Implement Two-Factor Authentication in ASP.NET Core

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