this post was submitted on 22 Dec 2023
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Android

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[–] skullgiver@popplesburger.hilciferous.nl 6 points 11 months ago (8 children)

Settling for RCS means no E2EE. It's also handing control over messaging back to carriers (or most likely, Google, because not many carriers have RCS servers) which is a step backwards.

For all of Apple's many many faults, iMessage is a pretty good service once you pay the Apple tax to get in.

[–] Chozo@kbin.social 1 points 11 months ago (5 children)

Doesn't RCS support E2EE if properly implemented? I seem to recall reading that the spec for RCS supports this, but it's just that carriers won't enable it.

[–] skullgiver@popplesburger.hilciferous.nl 9 points 11 months ago* (last edited 11 months ago) (4 children)

No, E2EE is not part of any RCS spec yet. Based on news articles, Apple is implementing RCS but will supposedly ask the governing standards bodies to add E2EE to the spec so they can implement it according to the official specifications.

Google has implemented their own E2EE on top of RCS (based on Signal's messaging for one to one conversations, based on MLS for group chats), but they haven't published any specifications for that. It shouldn't be too hard to reverse engineer, but that shouldn't be necessary for any open protocol.

[–] Chozo@kbin.social 4 points 11 months ago

Google has implemented their own E2EE on top of RCS (based on Signal’s messaging for one to one conversations, based on MLS for group chats), but they haven’t published any specifications for that.

Ahh, this must be what I was thinking of, then. Thanks for clarifying!

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