[Cryptography] Apple Group FaceTime and end-to-end and encryption

[Dave Howe]

On 07/06/2018 13:22, Stefano Quintarelli wrote:
> I would suspect all streams are encrypted with the same key and that
> key is shared wncrypted with each user using their key pairs
Which is only logical; after all, that's how systems like pgp and s/mime
work, and if you have a single, consistent stream you can then move to
multicast which effectively automates that spanning tree previously
mentioned.