this post was submitted on 17 Oct 2023
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Privacy
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Metadata and the comm endpoints is one of the hardest parts to deal with. If an intermediary doesn't have a pointer to a destination then delivering a message becomes problematic, envelopes without an address tend to sit in bins. It would be possible to simply store messages and allow recipients to poll for them but that gets really inefficient at scale. Plus it creates a central repo where messages sit until retrieved which is a liability in itself.
Things like OTR encryption are interesting as a transient system ad-hoc type encryption for things that don't need or even want absolute assurance of identity, but if I want to talk to Alice and be sure it's not Eve then it's not ideal.