Authorization types for v3 onion service have to be clarified in documentation

Problem 1. Official [[https://gitweb.torproject.org/torspec.git/tree/rend-spec-v3.txt|spec]] mentions stealth auth:

[TODO: Also specify stealth client authorization.].

However, stealth auth is only used for v2 onion services. It should be fixed.

Problem 2. According to teor's [[https://trac.torproject.org/projects/tor/ticket/20700#comment:23|comment]] the following auth types were planned: 'descriptor', 'intro', and 'standard'. However, only 'descriptor' type is documented by spec (man page for tor alpha refers to spec for details). Other auth types are not documented at all, though spec gives a strong impression that 'descriptor' is only one of possible authentication types.

If tor project already has some understanding of these future planned auth types, they must be described at least in tickets. If it is not the case, somewhere (e.g. in man page which now refers to spec) we should write that 'descriptor' is the only auth type which will be supported in foreseeable future.

Trac:
Username: geoip