Towards a Secure and Efficient Location-based Secret Sharing Protocol
Alexey Gorodetskiy, Andrey Serebryakov, Alma Oracevic, Rasheed Hussain, S. M. Ahsan Kazmi · 2020
Location-based encryption enhances security through integration of location data which is based on Global Positioning System (GPS) coordinates into encryption and decryption processes. It allows data to be decrypted only at specific location(s) or within a specific area. However, this approach strictly relies on self-checked location data which can be easily bypassed. In this paper, we present an analysis of the security of the existing location-based key exchange methods together with our proposed improvements. Furthermore, we propose a novel method based on the existence of a Trusted Third Party (TTP). A TTP is an entity trusted by both sides and the location tracking is entrusted to a TTP rather than a client. We also demonstrate a working proof-of-concept for the proposed approach.