keys is not possible because changing the key is not possible by the
user.
+ o JOINing to +a (requires passphrase to JOIN) does not work on autojoin.
+ Seems the passwords in the .silc/config has no effect.
+
o Add local commands to list the current server and client public keys
that the user has. And a local command to dump the contents of the
public key to the screen. Something like LISTKEYS, SHOWKEY...