@ity @lumi
oh I don't care for his dramatic "analyses" on messengers but as far as I can tell his other work is good, and I like the idea of key transparency. I'm also sympathetic to his cause of getting furries to stop using telegram.
But here are some ietf drafts on key transparency
datatracker.ietf.org/doc/draft-ietf-keytrans-architecture/ (includes a federated use case)
datatracker.ietf.org/doc/draft-ietf-keytrans-protocol/ actual mathy stuff
I'm fairly sure this is what signal is basing their key transparency implementation on, but I can't find the comment that made me think that again