Continuous Authentication in Secure Messaging

Web: https://iacr.org/news/item/19109

ePrint Report: Continuous Authentication in Secure Messaging

Benjamin Dowling, Felix Günther, Alexandre Poirrier

Secure messaging schemes such as the Signal protocol rely on out-of-band channels to verify the authenticity of long-running communication. Such out-of-band checks however are only rarely actually performed by users in practice.


In this paper, we propose a new method for performing continuous authentication during a secure messaging session, without the need for an out-of-band channel. Leveraging the users' long-term secrets, our Authentication Steps extension guarantees authenticity …

authentication continuous eprint report messaging secure messaging