This is a Go implementation of the Google Authenticator library.

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Copyright (c) 2012 Damian Gryski <damian@gryski.com>
This code is licensed under the Apache License, version 2.0

It implements the one-time-password algorithms specified in:

* RFC 4226 (HOTP: An HMAC-Based One-Time Password Algorithm)
* RFC 6238 (TOTP: Time-Based One-Time Password Algorithm)

You can learn more about the Google Authenticator library at its project page:

* https://github.com/google/google-authenticator