Attack of the Week: Group Messaging in WhatsApp and Signal
https://blog.cryptographyengineering.com/2018/01/10/attack-of-the-week-group-messaging-in-whatsapp-and-signal/ [blog.cryptographyengineering.com]
2018-01-11 09:25
This result comes from a new paper by Rösler, Mainka and Schwenk from Ruhr-Universität Bochum (affectionately known as “RUB”). The RUB paper paper takes a close look at the problem of group messaging, and finds that while messengers may be doing fine with normal (pairwise) messaging, group messaging is still kind of a hack.
source: green