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ECQV-IBI: Identity-based identification with implicit certification

Lookup NU author(s): Dr Syh Yuan TanORCiD

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Abstract

Identity-based identification (IBI) schemes allow a prover to provide entity identification, based on its unique identity. This paper provides the first non-trivial IBI scheme with implicit certification by using the Elliptic Curve Qu Vanstone (ECQV) implicit certification scheme. In contrast to the conventional identity-based schemes, the implicit certificate based approach is resistant against key escrow since the trusted authority only a part of the secret key, which is used as input by the user to construct its own user secret key. We show our scheme is able to achieve Trust Level 3 according to Girault’s definitions, while requiring less resources when compared to certificateless identification. A corresponding formal security model is defined, showing the resistance of our proposed scheme against impersonation attacks. Compared to other Schnorr-based IBI schemes, our proposed IBI scheme with implicit certification outperforms in storage, computation and communication efficiency and thus offers a viable solution to be applied in an internet of things (IoT) context.

Publication metadata

Author(s): Braeken A, Chin JJ, Tan SY

Publication type: Article

Publication status: Published

Journal: Journal of Information Security and Applications

Year: 2021

Volume: 63

Online publication date: 28/10/2021

Acceptance date: 28/10/2021

ISSN (electronic): 2214-2126

Publisher: Elsevier

URL: https://doi.org/10.1016/j.jisa.2021.103027

DOI: 10.1016/j.jisa.2021.103027

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