Paper 2016/016

A trustless privacy-preserving reputation system

Alexander Schaub, Rémi Bazin, Omar Hasan, and Lionel Brunie

Abstract

Reputation systems are crucial for distributed applications in which users have to be made accountable for their actions, such as e-commerce websites. However, existing systems often disclose the identity of the raters, which might deter honest users from posting reviews, out of fear of retaliation from the ratees. While many privacy-preserving reputation systems have been proposed, none of them was at the same time truly decentralized, trustless, and suitable for real world usage in, for example, e-commerce applications. After discussing the weaknesses and shortcoming of existing solutions, we will present our own blockchain-based trustless reputation system, and analyze its correctness and the security guarantees it promises.

Metadata
Available format(s)
PDF
Category
Cryptographic protocols
Publication info
Preprint. MAJOR revision.
Keywords
reputation sytemtrustlessblockchain
Contact author(s)
alexander schaub @ polytechnique edu
History
2016-01-08: received
Short URL
https://ia.cr/2016/016
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2016/016,
      author = {Alexander Schaub and Rémi Bazin and Omar Hasan and Lionel Brunie},
      title = {A trustless privacy-preserving reputation system},
      howpublished = {Cryptology ePrint Archive, Paper 2016/016},
      year = {2016},
      note = {\url{https://eprint.iacr.org/2016/016}},
      url = {https://eprint.iacr.org/2016/016}
}
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