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TwoFacAuth.ValidateTwoFactorPIN every time retuns false

See original GitHub issue

bool isValid = TwoFacAuth.ValidateTwoFactorPIN(UserUniqueKey, token);

I have tried above code but, the code always returning false even if unique key and token is correct.

Issue Analytics

  • State:closed
  • Created 4 years ago
  • Comments:10

github_iconTop GitHub Comments

ahwmcommented, Dec 4, 2019

@dfibuch Yes, I’m not sure why the default is 5 minutes where the RFC only really allows 60 (to allow the expiring code to work). But I’m glad you were able to figure out the issue!

dfibuchcommented, Dec 4, 2019

I’ve just been playing around with the example from Dot Net Detail and had the problem where it would validate an old token, which I don’t think it should. I read through the convo here and it’s the timeout on the ValidateTwoFactorPIN method that I didn’t set, so I changed it to:

TwoFacAuth.ValidateTwoFactorPIN(UserUniqueKey, token, TimeSpan.FromSeconds(30));

And now it only validates the active token.

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