So, I was told to not use Signal, so all that is left is Matrix. And I am not techy enough to have my own server and neither are my relatives, so Matrix.org is the only option

  • mox@lemmy.sdf.org
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    1 month ago

    How would the sender prevent messages from going to the admin user that joined the room?

    It wouldn’t matter if a rogue admin eavesdropped on an E2EE room, because they would see encrypted blobs where the message content would be. That’s what E2EE is for.

    https://en.wikipedia.org/wiki/End-to-end_encryption

    How would the sender prevent messages from going to the admin user that joined the room?

    You’re conflating multiple things. Merely joining a room does not grant access to message decryption keys.

    I respect your curiosity, but I think you’re going to have to familiarize yourself with the software and concepts to get a detailed understanding of how all this stuff works. If you’re technically inclined, I suggest reading the protocol spec, or at least the parts that interest you. You could also drop in to the public chat room and ask more questions there: #matrix:matrix.org