Hello all. I have written a new proposal for a XEP: Two-factor user authentication with a shared secret. html and xml files can be downloaded from https://a2nets.erve.vtt.fi/TeemuVaisanen
For the next version we have to think, e.g., if there should be only one ad hoc command to ask all supported mechanisms or use separate commands for each authentication mechanism (as in current version). Any questions, comments and suggestions are welcome. Best regards, Teemu Väisänen
