Allow TOTP generation in the future

guyht / notp

Node One Time Password library, supports HOTP, TOTP and works with Google Authenticator

https://github.com/guyht/notp

MIT License

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Allow TOTP generation in the future #44

Open RazZziel opened 7 years ago

RazZziel commented 7 years ago

For my use case (TOTP codes valid for 24 hours that I need to know the day before) I need to generate TOTP codes in the future, not only in the present, but totp.gen() explicitly forbids this possibility.

Is there a reason for this limitation? Would it be possible to allow changing _t just like it is possible to change time?