Anonymous and Publicly Linkable Reputation Systems

Johannes Blömer, Jakob Juhnke, Christina Kolb

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract / Description of output

We consider reputation systems where users are allowed to rate products that they purchased previously. To obtain trustworthy reputations, they are allowed to rate these products only once. As long as they do so, the users stay anonymous. Everybody is able to detect users deviating from the rate-products-only-once policy and the anonymity of such dishonest users can be revoked by a system manager. In this paper we present formal models for such reputation systems and their security. Based on group signatures we design an efficient reputation system that meets all our requirements.
Original languageEnglish
Title of host publicationFinancial Cryptography and Data Security
EditorsRainer Böhme, Tatsuaki Okamoto
Place of PublicationBerlin, Heidelberg
PublisherSpringer Berlin Heidelberg
Number of pages11
ISBN (Electronic)9783662478547
ISBN (Print)9783662478530
Publication statusPublished - 16 Jul 2015
Event19th International Conference on Financial Cryptography and Data Security 2015 - InterContinental San Juan Hotel, San Juan, Puerto Rico
Duration: 26 Jan 201530 Jan 2015
Conference number: 19

Publication series

NameLecture Notes in Computer Science
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Conference19th International Conference on Financial Cryptography and Data Security 2015
Country/TerritoryPuerto Rico
CitySan Juan
Internet address

Keywords / Materials (for Non-textual outputs)

  • reputation
  • trust
  • group signatures
  • anonymity
  • linkability
  • verifier-local revocation
  • traceability
  • strong-exculpability


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