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MSC3917: Cryptographically Constrained Room Membership

Open duxovni opened this issue 3 years ago • 3 comments

Rendered

duxovni avatar Oct 25 '22 07:10 duxovni

Is anyone actively working on an implementation of this?

cvwright avatar Mar 30 '23 17:03 cvwright

We are planning on working on it, but are not currently doing so yet.

uhoreg avatar Mar 31 '23 02:03 uhoreg

We might want to consider having clients sign m.room.tombstone events to ensure users that created the event are verified room members . Since this MSC will require a new room version, a malicious homeserver could downgrade the room version to a previous version without cryptographic room membership verification by injecting a fake m.room.tombstone event in the room.

Michael-Hollister avatar May 16 '23 13:05 Michael-Hollister