dc.contributor.author |
Busom Figueres, Núria |
dc.contributor.author |
Petrlic, R. |
dc.contributor.author |
Sebé Feixas, Francesc |
dc.contributor.author |
Sorge, C. |
dc.contributor.author |
Valls Marsal, Magda |
dc.date |
2017-01-20T10:37:21Z |
dc.date |
2017 |
dc.date |
10000-01-01 |
dc.identifier |
1084-8045 |
dc.identifier |
http://hdl.handle.net/10459.1/59057 |
dc.identifier |
https://doi.org/10.1016/j.jnca.2016.12.023 |
dc.identifier.uri |
http://hdl.handle.net/10459.1/59057 |
dc.description |
Reputation systems are useful to assess the trustworthiness of potential transaction partners, but also a
potential threat to privacy since rating profiles reveal users’ preferences. Anonymous reputation systems resolve
this issue, but make it difficult to assess the trustworthiness of a rating. We introduce a privacy-preserving
reputation system that enables anonymous ratings while making sure that only authorized users can issue
ratings. In addition, ratings can be endorsed by other users. A user who has received a pre-defined number of
endorsements can prove this fact, and be rewarded e.g. by receiving a “Premium member” status. The system is
based on advanced cryptographic primitives such as Chaum-Pedersen blind signatures, verifiable secret sharing
and oblivious transfer. |
dc.description |
The authors acknowledge partial support by Spanish-German Integrated Actions under the project 57049770, the Spanish Government under project MTM2013-46949-P, and by the Government of Catalonia under grant 2014FI_B2 00036. |
dc.language |
eng |
dc.publisher |
Elsevier |
dc.relation |
MINECO/PN2013-2016/MTM2013-46949-P |
dc.relation |
Reproducció del document publicat a https://doi.org/10.1016/j.jnca.2016.12.023 |
dc.relation |
Journal of Network and Computer Applications, 2017, vol. 80, p. 58–66 |
dc.rights |
(c) Elsevier Ltd, 2016 |
dc.rights |
info:eu-repo/semantics/restrictedAccess |
dc.subject |
Reputation system |
dc.subject |
Reputation management |
dc.subject |
Anonymity |
dc.subject |
Privacy |
dc.title |
A privacy-preserving reputation system with user rewards |
dc.type |
article |
dc.type |
publishedVersion |