Anonymous Access to Trust Information Using K-anonymity Chord

CAN A. B., Bhargava B.

2nd International Conference on Advances in P2P Systems (AP2PS), Florence, Italy, 25 - 30 October 2010, pp.14-19 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Volume:
  • City: Florence
  • Country: Italy
  • Page Numbers: pp.14-19
  • Hacettepe University Affiliated: Yes


In a reputation based trust network, each peer stores trust information of others and answers the trust queries, in addition to providing services to others. We present a cryptographic protocol on Chord, which provides anonymous access to trust information. Peers form anonymity groups and generate responses inside the group. Responder of a trust query has k-anonymity protection against an adversary who can sniff all communication on the network. Moreover, our encryption scheme ensures that the initiator of a trust query can check the validity of an anonymous reply.