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The security guarantees for RCS E2EE are higher than the security guarantees for iMessage. iMessage relies on a public key server controlled by Apple (or China
by lern_too_spel 5y ago
The security guarantees for RCS E2EE are higher than the security guarantees for iMessage. iMessage relies on a public key server controlled by Apple (or China if you're messaging someone in China). Whoever controls that server can MITM the protocol, and the client has no way to verify. iMessage also doesn't have forward secrecy. RCS E2EE, on the other hand, is a straightforward implementation of the Signal protocol, which does implement forward secrecy and which provides a way for the user to verify they aren't being eavesdropped.