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No cross-room auth

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Richard van der Hoff 2020-11-19 22:53:49 +00:00
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proposals/1772-groups-as-rooms.md
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@ -299,6 +299,16 @@ space has a high rate of membership churn.
Things that were considered and dismissed:
* Extend the auth rules to include state from other rooms. Although this feels
cleaner, a robust implementation would be a hugely complicated
undertaking. In particular, room state resolution is closely linked to event
authorisation, and is already highly complex and hard to reason about, and
yet is fundamental to the security of Matrix.
In short, we believe such a change would require significant research and
modelling. A solution based on such a foundation could not practically be
implemented in the near future.
* Rather than defining the mapping in the room, define a template power-levels
event in a parent space, which will be inherited by all child rooms. For example: