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SE-CPPA: A Secure and Efficient Conditional Privacy-Preserving Authentication Scheme in Vehicular Ad-Hoc Networks.

Mahmood A Al-Shareeda¹, Mohammed Anbar¹, Selvakumar Manickam¹

¹National Advanced IPv6 Centre (NAv6), Universiti Sains Malaysia (USM), Penang 11800, Malaysia.

Sensors (Basel, Switzerland)

|December 28, 2021

Summary

This paper introduces a Secure and Efficient Conditional Privacy-Preserving Authentication (SE-CPPA) scheme for vehicular ad-hoc networks (VANETs). The new SE-CPPA scheme effectively prevents impersonation attacks and improves message signing and verification efficiency.

Keywords:

Vehicular Ad-Hoc Networks (VANETs)bilinear pair cryptography identity-based cryptography impersonation attacks privacy-preserving side-channel attacks

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Area of Science:

Vehicular Ad-Hoc Networks (VANETs)
Network Security
Cryptography

Background:

VANET communications face security vulnerabilities and impersonation attacks.
Existing Conditional Privacy-Preserving Authentication (CPPA) schemes lack efficiency and robust protection against impersonation.
Performance efficiency in signing and verifying safety messages is a critical concern in VANETs.

Purpose of the Study:

To propose a Secure and Efficient Conditional Privacy-Preserving Authentication (SE-CPPA) scheme for VANETs.
To enhance security by resisting impersonation attacks.
To improve the performance efficiency of authentication in VANETs.

Main Methods:

The proposed SE-CPPA scheme utilizes cryptographic hash functions and bilinear pair cryptography.
Vehicle identities stored in tamper-proof devices (TPDs) are frequently updated with short validity periods.
The scheme avoids computationally intensive operations like the MapToPoint hash function.

Main Results:

The SE-CPPA scheme demonstrates effectiveness against impersonation attacks through formal and informal security analysis.
Simulation results show significant performance improvements over existing schemes.
Reductions in computation costs for signing (99.95%) and verifying (35.93%) messages were achieved.
Communication costs, measured by message size, were reduced by 27.3%.

Conclusions:

The SE-CPPA scheme provides robust security against impersonation attacks in VANETs.
The proposed scheme offers superior performance efficiency in terms of computation and communication costs.
SE-CPPA is a viable solution for secure and efficient authentication in safety-critical VANET applications.