perrylongwani/My-Research-Work-GEOCRYPT: GEOCRYPT

This paper presents GeoCrypt, a novel location aware encryption framework that eliminates traditional key exchange by deriving cryptographic keys from GPS coordinates. Unlike conventional methods requiring key distribution, GeoCrypt establishes secure communication through a trusted master node that facilitates initial location exchange between sensors. The core innovation transforms geographic coordinates into cryptographic material using SHA-256 and HKDF, providing inherent forward secrecy as keys dynamically change with sensor movement. Our multi-layer encryption incorporates transposition cipher, AES-256, and Fernet for comprehensive security. The protocol handles mobility through agreed location snapshots and periodic beaconing, where keys are derived from mutually verified location data to prevent desynchronization during minor movements, while adaptive rekeying triggered by significant movement maintains security computation balance. Experimental results demonstrate that GeoCrypt provides enhanced security with minimal computational overhead, while offering substantive improvements through location-bound key derivation that prevents key reuse. The framework proves particularly suitable for dynamic environments where traditional key management is impractical.