Cryptology ePrint Archive: Report 2016/016
A trustless privacy-preserving reputation system
Alexander Schaub and Rémi Bazin and 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.
Category / Keywords: cryptographic protocols / reputation sytem, trustless, blockchain
Date: received 7 Jan 2016
Contact author: alexander schaub at polytechnique edu
Available format(s): PDF | BibTeX Citation
Version: 20160108:000235 (All versions of this report)
Short URL: ia.cr/2016/016
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