For Mediawiki, a validation extension.
It should be possible to use with any instance of Yubico's validation server, as long as the Mediawiki LocalSettings.php contains all the necessary information.
It requires a Yubikey API id, API key, and validation base URL using the variables $wgYubikeyValidationBaseURL, $wgYubikeyAPIId and $wgYubikeyAPIKey. The base URL defaults to Yubico's own validation server.
Dependencies
