Extended Diffie-Hellman Encryption for Secure and Efficient Real-Time Beacon Notifications
Liron David, Omer Berkman, Avinatan Hassidim, David Lazarov, Yossi Matias, Moti Yung
IEEE Symposium on Security and Privacy 2025 · Day 3 · Private and Secure Communication
This article delves into a presentation by Liron David and collaborators at IEEE S&P, introducing a novel cryptographic protocol designed to address the complex security and efficiency challenges inherent in real-time beacon notifications for resource-constrained Internet of Things (IoT) devices. The talk, titled "Extended Diffie-Hellman Encryption for Secure and Efficient Real-Time Beacon Notifications," outlines a new cryptographic primitive called **Extended Diffie-Hellman Encryption Scheme (XDHIS)** and a subsequent protocol built upon it. The core problem tackled is how an owner, such as Alice, can receive secure, real-time updates about her possessions (e.g., a suitcase with no internet connection or GPS) from nearby observers, ensuring end-to-end security, privacy, and integrity, even if the beacon itself is physically compromised.