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pRate: Anonymous Star Rating with Rating Secrecy

Liu, Jia and Manulis, Mark (2019) pRate: Anonymous Star Rating with Rating Secrecy In: International Conference on Applied Cryptography and Network Security.

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We introduce pRate, a novel reputation management scheme with strong security and privacy guarantees for the users and their reputation scores. The reputation scores are computed based on the (aggregated) number(s) of stars that users receive from their raters. pRate allows users to advertise privacy-friendly statements about their reputation when searching for potential transaction partners. Ratings can only be submitted by partners who have been initially authorised by the ratee and issued a rating token. The scheme is managed by a possibly untrusted reputation manager who can register users and assist ratees in updating their reputation scores, yet without learning these scores. In addition to ensuring the secrecy of the ratings, a distinctive feature of pRate over prior proposals, is that it hides the identities of raters and ratees from each other during the transaction and rating stages. The scheme is built from a number of efficient cryptographic primitives; its security is formally modeled and proven to hold under widely used assumptions on bilinear groups.

Item Type: Conference or Workshop Item (Conference Paper)
Divisions : Faculty of Engineering and Physical Sciences > Computer Science
Authors :
Date : 29 May 2019
Copyright Disclaimer : © Springer Nature Switzerland AG 2019
Uncontrolled Keywords : Reputation management Star rating Anonymity Rating secrecy
Depositing User : James Marshall
Date Deposited : 28 Jan 2020 15:24
Last Modified : 28 Jan 2020 15:24

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