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Quentin 2022-03-24 15:21:54 +01:00
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_posts/2022-03-24-matrix-migrate-encrypted-room-to-a-clear-text-one.md
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@ -9,18 +9,19 @@ category: operation
tags:
---
Some time ago, the Matrix team was pushing hard E2EE and activated for all created rooms.
Believing encryption was the future, we kept this default for all the rooms we created.
But now that one of our room starts being popular, it appeares that E2EE does not work well with public rooms:
Some time ago, the Matrix team was pushing hard E2EE and activated it for all created rooms.
Believing encryption was the future, we kept this default for all of our rooms.
But now that one of our room starts being popular, it appears that E2EE does not work well with public rooms:
1. the history is not available to newcomers
2. we can not search the history of an encrypted room (or at least, I never managed to make it work even with the desktop app)
3. notifications options are limited on mobile
3. notification options are more limited
4. scaling issues
5. and so on.
5. many additional minor issues
It seems that Matrix developpers are aware of these problems as now, if you create a "public room", you will not be asked to encrypt it at all.
But for existing rooms, we have a problem: for security reasons, you can't disable encryption in a room.
It seems that Matrix developers are aware of these problems as if you create a "public room" now, you will not be proposed to encrypt it.
But for existing rooms, we still have a problem: for security reasons, you can't disable encryption in a room.
Our only option is to create a new room and to point the old one to the new one.
Thankfully, Matrix has a feature named **Tombstone** that helps redirecting users from one room to another.
This feature is used for room version upgrade, but we can "abuse" it to redirect people to a completely different room.
@ -31,7 +32,7 @@ You can set a new alias for your old room and send a message containing it on yo
> Hi, this is the beginning of the history of this room. If you want to go back even more in time, check the old room: #myroom-old:example.tld
Finally, you need the identifier of your room. It starts with a `!`. For example: `!ARbIZeDKGloDOnjyyw:deuxfleurs.fr`.
Finally, you need the identifier of your **new** room. It starts with a `!`. For example: `!ARbIZeDKGloDOnjyyw:deuxfleurs.fr`.
Keep it somewhere accessible, and we are done configuring our new room.
We can now prepare the tombstone for the old room.