ASPA: Advanced Strong Pseudonym based Authentication in Intelligent Transport System

Abstract

Intelligent Transport System (ITS) uses the IEEE 802.11P standard for the wireless communication among vehicles. A wireless ad hoc network of vehicles is established to improve road safety, comfort, security, and traffic efficiency. Wireless communication in ITS leads to many security and privacy challenges. Security and privacy of ITS are important issues that demand incorporation of confidentiality, privacy, authentication, integrity, non-repudiation, and restrictive obscurity. In order to ensure the privacy of vehicles during communication, it is required that the real identity of vehicles should not be revealed. There must be robust and efficient security and privacy mechanisms for the establishment of a reliable and trustworthy network. Therefore, we propose Advanced Strong Pseudonym based Authentication (ASPA), which is a distributed framework to handle the security and privacy issues of vehicle communications in ITS. ASPA only allows vehicles with valid pseudonyms to communicate in ITS. Pseudonyms are assigned to vehicles in a secure manner. The pseudonym mappings of vehicles are stored at different locations to avoid any chance of vehicle pseudonyms certificates linkability. In addition, the most recent communication pseudonyms of a malicious vehicle are revoked and are stored in the Certificate Revocation List (CRL) that results in small size of the CRL. Therefore, the CRL size does not increase exponentially. The distributed framework of ASPA guarantees, the vehicles privacy preservation in the real identities mapping and revocation phase. The empirical results prove that ASPA is robust and efficient with low computational cost, overhead ratio, average latency, and an increased delivery ratio.

A Privacy-Preserving Authentication and Pseudonym Revocation Scheme for VANETs

“…It can be seen from the discussion in related work and the comparative analysis of performance that our scheme is more efficient than [7], [10], [14], [36]- [38], [45]. Though [42], [44], [46] also show obvious advantages in efficiency, [42] has key escrow problem, and those three all have the threat of Sybil attack. It is worth mentioning that although [46] does not address cross-domain issues, its distributed framework can also be extended to adjust to this scenario.…”

“…KMC is a single threat model so the system is obviously not secure. To distribute the capability of identity resolution between authorities, Ali et al [43], [44] presented an authentication framework, which can avoid pseudonyms being linked. The pseudonyms validity is set as between 10 to 50 milliseconds [44] and the vehicle interacts with Pseudonym Provider (PP) frequently.…”

Toward the Design of an Efficient and Secure System Based on the Software-Defined Network Paradigm for Vehicular Networks

“…We can notice in Figure . 13 that the average number of key establishments in ASPA (Advanced Strong Pseudonym-based Authentication) [82] and in PACP (Pseudonym Authentication Based Conditional Confidentiality Protocol) [83] becomes more important when the groups are not used. Note that when the beams are not brought into play within the 180 s time interval, 13 independent keys have been transmitted.…”

Research and Applied Perspective to Blockchain Technology: A Comprehensive Survey

“…Traditional blockchain cannot be enough in the case of large amount of patient's storage and sharing data so a double blockchain solution is presented by Lejun Zhang [148]. An ITS aims to improve road safety and traffic management [149,150]. Vehicles share the information regarding their position, speed and direction etc.…”