Re:Large-Scale Abuse of Contact Discovery in Mobile Messenge...
by walterbell on Monday April 19, 2021 @05:23AM
(#26860681)
Yes, it's possible. Depending on your threat model, it may or may not be a good idea to have a long-term archive of encrypted data be subject to legal process. Matrix has plans to support IETF MLS, which is a necessary precursor to messenger interoperability.
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Re:Large-Scale Abuse of Contact Discovery in Mobile Messenge...
by Arathorn on Monday April 19, 2021 @06:46AM
(#26861198)
Matrix lets you configure the history retention on a per-server or per-room basis, fwiw: https://github.com/matrix-org/synapse/blob/develop/docs/mess.... From a metadata perspective, we're working on P2P to avoid metadata accumulating on servers. In terms of the OP here (address-book based contact discovery), https://github.com/matrix-org/matrix-doc/blob/hs/hash-identi... is how Matrix optionally implements it while trying to preserve privacy.