Returns: Boolean - Returns true if the token matches within the givenĬounter value. For more on how to use a window with this, see Helper function for `hotp.verifyDelta()`` that returns a boolean Verify a counter-based one-time token against the secret and return true if it Key encoding (ascii, hex, base32, base64). if W = 10, and C = 5, this function will check the passcode against all One Time Passcodes between 5 and 15, inclusive. The function will check "W" codes in the future against the provided passcode, e.g. The number of digits for the one-time passcode. This should be stored by the application and must be incremented for each request. Returns: Object - On success, returns an object with the counterĭifference between the client and the server as the delta property (i.e.Ĭounter value. Set ASCII secret let secret = "rNONHRni6BAk7y2TiKrv" // Get HOTP counter token at counter = 42 let counter42 = speakeasy. This project incorporates code from, originally a One-time Password (TOTP) algorithm defined in are Password (HOTP) algorithm defined by and the Time-Based Speakeasy implements one-time passcode generators as standardized by the It is well-tested and includes robust support for custom token lengths,Īuthentication windows, hash algorithms like SHA256 and SHA512, and otherįeatures, and includes helpers like a secret key generator. Speakeasy is a one-time passcode generator, ideal for use in two-factorĪuthentication, that supports Google Authenticator and other two-factor devices. Use Buffer.alloc() and om() instead deprecated new BufferĪre you looking for a desktop cross platform two-factor authentication app? Check out: Authme I'm just modernized and fixed some stuff: It's better to try to do that from another browser session because we can return back to previous authentication method if something will go wrong.This is a fork of the original speakeasy.
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