@patrickleavy @jupiter_rowland If you decide to develop a new project from scratch, there are currently only two libraries implementing portable identity primitives: APx (Rust) and Fedify (JavaScript, work in progress). For end to end encrypted groups, several solutions are currently being explored. Most likely we will end up using MLS.I am working on a solution that is compatible with portable identity: https://codeberg.org/silverpill/feps/src/branch/main/0806/fep-0806.md. It is intended to be used for direct messages but may be upgraded to groups later. I think other proposed solutions to E2EE are not compatible with portable identities.
