Asynchronous Ratcheting Tree: Group Messaging with Strong Security Guarantees(github.com)
github.com
Asynchronous Ratcheting Tree: Group Messaging with Strong Security Guarantees
https://github.com/facebookresearch/asynchronousratchetingtree
4 comments
The paper makes the Diffie-Hellman tree they use pretty easy to grok: https://eprint.iacr.org/2017/666.pdf
For those interested in ART, there is an IETF working group attempting to standardise it as the "Messaging Layer Security" protocol. Their website [1] has a draft protocol document [2] which explains the ART scheme from a concrete engineering perspective, which I find easier to follow than the original ART paper.
[1]: https://mlswg.github.io/
[2]: https://github.com/mlswg/mls-protocol/blob/master/draft-ietf...
[1]: https://mlswg.github.io/
[2]: https://github.com/mlswg/mls-protocol/blob/master/draft-ietf...
https://mailarchive.ietf.org/arch/msg/mls/vskNqxGlJCKql0UsDK...
> At the interim last week, there was agreement to remove the discussion of ART from the protocol draft and focus on TreeKEM.
> At the interim last week, there was agreement to remove the discussion of ART from the protocol draft and focus on TreeKEM.
Thanks for the pointers. This is nice work.