ECQV-IBI: Identity-based identification with implicit certification. (December 2021)

• Record Type: Journal Article
• Authors: Braeken, An; Chin, Ji-Jian; Tan, Syh-Yuan
• Is Part Of: Journal of information security and applications. Volume 63(2022)
• Publication Date: 2021-12
• Subjects: 11T71 -- 94A60; Identity-based identification -- Key escrow -- Implicit certification -- ECQV; Computer security -- Periodicals; Information technology -- Security measures -- Periodicals; 005.805
• DOI: 10.1016/j.jisa.2021.103027
• Languages: English
• ISSNs: 2214-2126

Abstract

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.