Li, Jiliang

The Conditional Privacy-Preserving Authentication (CPPA) protocol has applications in the construction of secure Vehicular Ad hoc Networks (VANETs) due to its capability to achieve both privacy preservation and authentication simultaneously. Although a number of CPPA protocols have been proposed in the literature,
existing approaches generally suffer from limitations such as the security problem
of system private keys, high computation requirement during certificate generation and message verification phases. To resolve these issues, this thesis firstly
presents a Certificateless and Provably-Secure Conditional Privacy-Preserving
Authentication (CPS-CPPA) protocol for VANETs based on the Tamper-Proof Device (TPD). To improve efficiency further, the proposed CPS-CPPA scheme added
the function of batch verification. However, this thesis has found out that the
CPS-CPPA protocol cannot guarantee the secrecy of one master key in practice
and not withstand the forged message attack and impersonation attack. To overcome the vulnerabilities of CPS-CPPA protocol, this thesis presents an Enhanced, Certificateless and Provably-Secure Conditional Privacy-Preserving Authentication (ECPS-CPPA) protocol to be used in vehicular environments that supports both privacy and security requirements in the VANETs system. This thesis also demonstrates that the ECPS-CPPA protocol is secure against forged message attack, impersonation attack, and other existing attacks. A comparative summary
shows that our ECPS-CPPA protocol has favorable computation and communication overheads in comparison to the other two recently published protocols. In the future, it is important to implement a proof of concept of this protocol in order to evaluate the real-world utility of ECPS-CPPA protocol

Georg-August-University Göttingen

Conditional Privacy-Preserving Authentication Protocols for Vehicular Ad Hoc Networks

https://ediss.uni-goettingen.de/bitstream/21.11130/00-1735-0000-0003-C12A-4/1/Thesis_Jiliang%20Li.pdf

Conditional Privacy-Preserving Authentication Protocols for Vehicular Ad Hoc Networks

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Georg-August-University Göttingen