Paper 2022/1585

Attribute-based Anonymous Credential: Optimization for Single-Use and Multi-Use

Kwan Yin Chan, The University of Hong Kong
Tsz Hon Yuen, The University of Hong Kong
Abstract

User attributes can be authenticated by an attribute-based anonymous credential while keeping the anonymity of the user. Most attribute-based anonymous credential schemes are designed specifically for either multi-use or single-use. In this paper, we propose a unified attribute-based anonymous credential system, in which users always obtain the same format of credential from the issuer. The user can choose to use it for an efficient multi-use or single-use show proof. It is a more user-centric approach than the existing schemes. Technically, we propose an interactive approach to the credential issuance protocol using a two-party computation with an additive homomorphic encryption. At the same time, it keeps the security property of impersonation resilience, anonymity, and unlinkability. Apart from the interactive protocol, we further design the show proofs for efficient single-use credentials which maintain the user anonymity.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Published elsewhere. CANS 2022: Cryptology and Network Security
DOI
10.1007/978-3-031-20974-1_5
Keywords
Anonymous credentialzero-knowledge proofsingle-usemulti-use
Contact author(s)
kychan @ cs hku hk
thyuen @ cs hku hk
History
2022-11-17: approved
2022-11-15: received
See all versions
Short URL
https://ia.cr/2022/1585
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2022/1585,
      author = {Kwan Yin Chan and Tsz Hon Yuen},
      title = {Attribute-based Anonymous Credential: Optimization for Single-Use and Multi-Use},
      howpublished = {Cryptology ePrint Archive, Paper 2022/1585},
      year = {2022},
      doi = {10.1007/978-3-031-20974-1_5},
      note = {\url{https://eprint.iacr.org/2022/1585}},
      url = {https://eprint.iacr.org/2022/1585}
}
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