ó €Ïšãó&•SrSSKr"SS\5rg)ú3Interface to handle end to end flow of U2F signing.éNcóR•\rSrSrSr\R R4SjrSr Sr g)ÚBaseAuthenticatorércó•[e)a“Authenticates app_id with a security key. Executes the U2F authentication/signature flow with a security key. Args: app_id: The app_id to register the security key against. challenge_data: List of dictionaries containing a RegisteredKey ('key') and the raw challenge data ('challenge') for this key. print_callback: Callback to print a message to the user. The callback function takes one argument--the message to display. Returns: A dictionary with the following fields: 'clientData': url-safe base64 encoded ClientData JSON signed by the key. 'signatureData': url-safe base64 encoded signature. 'applicationId': application id. 'keyHandle': url-safe base64 encoded handle of the key used to sign. Raises: U2FError: There was some kind of problem with registration (e.g. the device was already registered or there was a timeout waiting for the test of user presence). ©ÚNotImplementedError)ÚselfÚapp_idÚchallenge_dataÚprint_callbacks Ú6lib/third_party/pyu2f/convenience/baseauthenticator.pyÚ AuthenticateÚBaseAuthenticator.Authenticates €ô2 Ðócó•[e)zäIndicates whether the authenticator implementation is available to sign. The caller should not call Authenticate() if IsAvailable() returns False Returns: True if the authenticator is available to sign and False otherwise. r)r s rÚ IsAvailableÚBaseAuthenticator.IsAvailable1s €ô Ðr©N) Ú__name__Ú __module__Ú __qualname__Ú__firstlineno__Ú__doc__ÚsysÚstderrÚwriterrÚ__static_attributes__rrrrrs†Ù;ð#&§*¡*×"2Ñ"2ôõ6 rr)rrÚobjectrrrrÚr sðñ:Û ô'˜õ'r