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UBITECH presents a scientific paper on efficient and privacy-preserving revocation in cooperative intelligent transportation systems at ACM WiSec 2021

The paper “Direct Anonymous Attestation on the Road: Efficient and Privacy-Preserving Revocation in C-ITS” has been accepted for presentation at the “14th ACM Conference on Security and Privacy in Wireless and Mobile Networks” (ACM WiSec 2021) that takes place as an online, virtual conference from June 28 to July 2, 2021 and is hosted by the Center for Cyber Security at New York University Abu Dhabi (NYUAD). The UBITECH’s Digital Security and Trusted Computing research group proposes a novel revocation protocol for Cooperative Intelligent Transportation Systems (C-ITS) based on Direct Anonymous Attestation (DAA) that leverages the benefits of trusted computing to offer an efficient and privacy-respecting solution.

The proposed protocol provides both revocation of the vehicle from the system and revocation of specific pseudonyms that cannot be reused again (referred to as hard and soft revocation respectively). UBITECH’s research group provides an implementation of the protocol in a real TPM, in order to demonstrate that the proposed solution is applicable to the real-world and can meet the strict performance requirements, as documented in ETSI standards, and also verify that near-constant revocation time is achievable even when multiple pseudonyms are entailed.