Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems

Johannes Blömer; Fabian Eidens; Jakob Juhnke

Paper 2018/029

Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems

Johannes Blömer, Fabian Eidens, and Jakob Juhnke

Abstract

We consider reputation systems in the Universal Composability Framework where users can anonymously rate each others products that they purchased previously. To obtain trustworthy, reliable, and honest ratings, users are allowed to rate products only once. Everybody is able to detect users that rate products multiple times. In this paper we present an ideal functionality for such reputation systems and give an efficient realization that is usable in practical applications.

Note: Fixed typos and corrected acknowledgements.

Metadata

Available format(s): PDF
Category: Applications
Publication info: Published elsewhere. Minor revision. 10.1007/978-3-319-76953-0_25
Keywords: Reputation Trust Anonymity Universal Composability
Contact author(s): jakob juhnke @ uni-paderborn de
History: 2018-05-08: revised; 2018-01-08: received; See all versions
Short URL: https://ia.cr/2018/029
License: CC BY

BibTeX

@misc{cryptoeprint:2018/029,
      author = {Johannes Blömer and Fabian Eidens and Jakob Juhnke},
      title = {Practical, Anonymous, and Publicly Linkable Universally-Composable Reputation Systems},
      howpublished = {Cryptology {ePrint} Archive, Paper 2018/029},
      year = {2018},
      url = {https://eprint.iacr.org/2018/029}
}