CCS '96 Proceedings of the 3rd ACM conference on Computer and communications security
Immunizing online reputation reporting systems against unfair ratings and discriminatory behavior
Proceedings of the 2nd ACM conference on Electronic commerce
Communications of the ACM
Computing and using reputations for internet ratings
Proceedings of the 3rd ACM conference on Electronic Commerce
Managing trust in a peer-2-peer information system
Proceedings of the tenth international conference on Information and knowledge management
A reputation-based approach for choosing reliable resources in peer-to-peer networks
Proceedings of the 9th ACM conference on Computer and communications security
Uncheatable Distributed Computations
CT-RSA 2001 Proceedings of the 2001 Conference on Topics in Cryptology: The Cryptographer's Track at RSA
The Eigentrust algorithm for reputation management in P2P networks
WWW '03 Proceedings of the 12th international conference on World Wide Web
A reputation-based trust model for peer-to-peer ecommerce communities [Extended Abstract]
Proceedings of the 4th ACM conference on Electronic commerce
Hardening Functions for Large Scale Distributed Computations
SP '03 Proceedings of the 2003 IEEE Symposium on Security and Privacy
Secure Group Communication in Asynchronous Networks with Failures: Integration and Experiments
ICDCS '00 Proceedings of the The 20th International Conference on Distributed Computing Systems ( ICDCS 2000)
ICDCS '04 Proceedings of the 24th International Conference on Distributed Computing Systems (ICDCS'04)
Query execution assurance for outsourced databases
VLDB '05 Proceedings of the 31st international conference on Very large data bases
A reputation-based trust management system for P2P networks
CCGRID '04 Proceedings of the 2004 IEEE International Symposium on Cluster Computing and the Grid
Effective use of reputation in peer-to-peer environments
CCGRID '04 Proceedings of the 2004 IEEE International Symposium on Cluster Computing and the Grid
Practical threshold signatures
EUROCRYPT'00 Proceedings of the 19th international conference on Theory and application of cryptographic techniques
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Reputation systems aggregate mutual feedback of interacting peers into a “reputation” metric for each participant. This is then available to prospective service “requesters” (clients) for the purpose of evaluation and subsequent selection of potential service “providers” (servers). For a reputation framework to be effective, it is paramount for both the individual feedback and the reputation storage mechanisms to be trusted and able to deal with faulty behavior of participants such as “ballot stuffing” (un-earned positive feedback) and “bad-mouthing” (incorrect negative feedback). While, in human-driven (e.g. Ebay) environments, these issues are dealt with by hired personnel, on a case by case basis, in automated environments, this ad-hoc manner of handling is likely not acceptable. Stronger, secure mechanisms of trust are required. In this paper we propose a solution for securing reputation mechanisms in computing markets and grids where servers offer and clients demand compute services. We introduce threshold witnessing, a mechanism in which a minimal set of “witnesses” provide service interaction feedback and sign associated ratings for the interacting parties. This endows traditional feedback rating with trust while handling both “ballot-stuffing” and “bad-mouthing” attacks. Witnessing relies on a challenge-response protocol in which servers provide verifiable computation execution proofs. An added benefit is ensuring computation result correctness.