Lightweight Identity-based Cryptographic Framework for Smart Vehicles: Cryptographic Proof

摘要

Existing vehicular standards adopt a heavyweight authentication framework to achieve the needed security requirements. However, the embraced framework has high computation and communication overhead because of its certificates and digital signatures; therefore, Identity Based cryptographic (IBC) authentications have been considered as better alternatives with less overhead. Most IBCs rely on pairing operation on elliptic curves in their underlined calculations, but pairing is a time-consuming operation. Hence, building pairingless IBC authentication schemes become a must. In this paper, we build a new pairingless IBC authentication scheme by fine-tuning a mixture of three available IBC frameworks. We rigorously prove the security of the scheme and show its effectiveness in comparison with the available approaches in terms of computation complexity and communication overhead.