ORCID

Abstract

In this paper, we propose a Blind Identity-Based Identification (Blind IBI) scheme based on the Guillou-Quisquater (GQ) scheme. Our proposed scheme combines the benefits of traditional Identity-Based Identification (IBI) schemes that can authenticate a user’s identity without rely ing on a trusted third party with the Blind Signature (BS) scheme that provides anonymity. As a result, the proposed scheme assures absolute user privacy during the authentication process. It does not rely on a third party, yet the verifier can still be assured of the user’s identity with out the user actually revealing it. In our work, we show that the proposed scheme is provably secure under the random oracle model, with the assumption that the one-more-RSA-inversion problem is difficult. Furthermore, we demonstrate that the proposed scheme is secure against passive, active, and concurrent impersonation attacks. In conclusion, the proposed scheme is able to achieve the desired blindness property without compromising the security of the GQ-IBI scheme it is based upon.

DOI

10.47836/mjms.17.4.11

Publication Date

2023-12-14

Publication Title

Malaysian Journal of Mathematical Sciences

Volume

17

Issue

4

First Page

19

Last Page

31

ISSN

1823-8343

Embargo Period

2023-12-16

Organisational Unit

School of Engineering, Computing and Mathematics

Keywords

blind GQ-IBI, blind signature, IBI, one-more-RSA inversion problem, random oracle model

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