GitHub - jds13/RFC6238-PHP: 119 lines of code to demo RFC6238 TOTP (e.g. Google Authenticator) with Ajax validation.

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119 lines of code to demo RFC6238 TOTP (e.g. Google Authenticator) with Ajax validation.

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Name		Name	Last commit message	Last commit date
Latest commit History 9 Commits
README		README
RFC6238.php		RFC6238.php

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If you access this file through a PHP-enabled webserver (like Apache), it will display a QR-code to initialize an RFC6238 time-based one-time password (as used by Google Authenticator). You can enter test values, hit "Check", and verify that the program logic works.

In this example, the UserSecretKey is a hash of the user IP address. In the real world, the UserSecretKey would be randomly generated when a user initiated this process, and saved in a server database for subsequent verification.