Asynchronous Ratcheting Tree: Group Messaging with Strong Security Guarantees (opens in new tab)

(github.com)

86 pointssetra7y ago4 comments

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...

saurik7y ago

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.

__d7y ago

Thanks for the pointers. This is nice work.

j / k navigate · click thread line to collapse