These days, probably read this instead: https://signal.org/docs/specifications/doubleratchet/ https://signal.org/docs/specifications/doubleratchet/ Also the I

These days, probably read this instead: https://signal.org/docs/specifications/doubleratchet/ https://signal.org/docs/specifications/doubleratchet/ Also the IETF drafts for MLS might be interesting: https://datatracker.ietf.org/doc/draft-ietf-mls-protocol/ https://datatracker.ietf.org/doc/draft-ietf-mls-protocol/