Welcome to the resource topic for 2023/228
Title:
Authenticated Continuous Key Agreement: Active MitM Detection and Prevention
Authors: Benjamin Dowling, Britta Hale
Abstract:Current messaging protocols are incapable of detecting active man-in-the-middle threats. Even common continuous key agreement protocols such as Signal, which offers forward secrecy and post-compromise security, are dependent on the adversary being passive immediately following state compromise, and healing guarantees are lost if the attacker is not. This work offers the first solution for detecting active man-in-the-middle attacks on such protocols by extending authentication beyond the initial public keys and binding it to the entire continuous key agreement. In this, any adversarial fork is identifiable to the protocol participants. We provide a modular construction generic for application with any continuous key agreement protocol, a specific construction for application to Signal, and security analysis. The modularity of our solution enables it to be seamlessly adopted by any continuous key agreement protocol.
ePrint: https://eprint.iacr.org/2023/228
See all topics related to this paper.
Feel free to post resources that are related to this paper below.
Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.
For more information, see the rules for Resource Topics .