/usr/share/telepathy/clients/KTp.TLSHandler.client is in kde-telepathy-auth-handler 0.8.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | [org.freedesktop.Telepathy.Client]
Interfaces=org.freedesktop.Telepathy.Client.Handler
[org.freedesktop.Telepathy.Client.Handler.HandlerChannelFilter 0]
org.freedesktop.Telepathy.Channel.ChannelType s=org.freedesktop.Telepathy.Channel.Type.ServerTLSConnection
org.freedesktop.Telepathy.Channel.TargetHandleType u=0
org.freedesktop.Telepathy.Channel.Requested b=false
|