Category "two-factor-authentication"

Best way to handle two factor authentication with node js

I am planning to use AWS, node js, and react js for my application. The application should fulfill HIPAA compliance and DTAC. My first question is, is JWT best

C# - Two-Factor Authentication (without ASP.NET Core Identity)

Is it possible to implement a two-factor authentication without use ASP.NET Core Identity? I have my own login table and everything works fine with login + pass

How do I ensure the users secret key for TOTP is valid?

I'm working on a 2FA App. Is there a way for me the secret key a user provides that I use to generate their tokens is valid beforehand? Edit: For clarification