More is Less: On the End-to-End Security of Group Chats in Signal, WhatsApp, and Threema

2018 - Paul Rösler, Christian Mainka, Jörg Schwenk

IEEE European Symposium on Security and Privacy, EuroS&P 2018 [paper] [slides (RWC 2018)] [video (RWC 2018)]

Linkable Democratic Group Signatures

2006 - Jörg Schwenk, Ahmad-Reza Sadeghi, Mark Manulis,

Accepted for 2nd Information Security Practice and Experience Conference (ISPEC 2006), 11.-14. April, Hangzhou, China. [pdf]