Client and Server Anonymity Preserving in P2P Networks

  • Byungryong Kim
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4185)


The participating nodes exchange information without knowing who is the original sender in P2P networks of basic form. Packets are relayed through the adjacent nodes and do not contain identity information about the sender. Since these packets are passed through a dynamically-formed path and since the final destination is not known until the last time, it is impossible to know who has sent it in the beginning and who will be the final recipient. The anonymity, however, breaks down at download/upload time because the IP address of the host from which the data is downloaded can be known to the outside. We propose a technique to provide anonymity for both the client and the server node in unstructured/structured P2P network. A random node along the path between the client and the server node is selected as an agent node and works as a proxy: the client will see it as the server and the server looks at it as the client, hence protecting the identity of the client and the server from each other.


Relay Node Distribute Hash Table Server Node File Sharing Inverted List 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.


  1. 1.
    Clarke, I., Sandberg, O., Wiley, B., Hong, T.W.: Freenet: A distributed anonymous information storage and retrieval system. In: Workshop on Design Issues in Anonymity and Unobservability, pp. 46–66 (2000),
  2. 2.
    The Gnutella Protocol Specification v0.41 Document Revision 1.2.,
  3. 3.
    Stoica, I., Morris, R., Liben-Nowell, D., Karger, D.R., Kaashoek, M.F., Dabek, F., Balakrishnan, H.: Chord: a scalable peer-to-peer lookup protocol for internet applications. IEEE/ACM Transactions on Networking (2003)Google Scholar
  4. 4.
    Zhao, B.Y., Huang, L., Stribling, J., Rhea, S.C., Joseph, A.D., Kubiatowicz, J.: Tapestry: A Resilient Global-scale Overlay for Service Deployment. IEEE Journal on Selected Areas in Communications (2004)Google Scholar
  5. 5.
    Ratnasamy, S., Francis, P., Handley, M., Karp, R., Schenker, S.: A scalable content-addressable network. In: Proceedings of the 2001 conference on Applications, technologies, architectures, and protocols for computer communications table of contents (2001)Google Scholar
  6. 6.
    Daswani, N., Garcia-Molina, H.: Query-flood DoS attacks in gnutella. In: Proceedings of the 9th ACM conference on Computer and communications security table of contents (2002)Google Scholar
  7. 7.
    Gummadi, P.K., Saroiu, S., Gribble, S.D.: A measurement study of Napster and Gnutella as examples of peer-to-peer file sharing systems. ACM SIGCOMM Computer Communication Review (2002)Google Scholar
  8. 8.
    Back, A., Möller, U., Stiglic, A.: Traffic analysis attacks and trade-offs in anonymity providing systems. In: Moskowitz, I.S. (ed.) IH 2001. LNCS, vol. 2137, pp. 245–257. Springer, Heidelberg (2001)CrossRefGoogle Scholar
  9. 9.
    Raymond, J.F.: Traffic Analysis: Protocols, Attacks, Design Issues, and Open Problems. In: Federrath, H. (ed.) Designing Privacy Enhancing Technologies. LNCS, vol. 2009, p. 10. Springer, Heidelberg (2001)CrossRefGoogle Scholar
  10. 10.
    Waldman, M., Rubin, A.D., Cranor, L.F.: Publius: a robust, tamper-evident, censorshipresistant, web publishing system. In: Proceedings of the Ninth USENIX Security Symposium, Denver, CO, USA (2000)Google Scholar
  11. 11.
    Scarlata, V., Levine, B., Shields, C.: Responder anonymity and anonymous peer-topeer file sharing. In: Proc. of IEEE International Conference on Network Protocols (ICNP), Riverside, CA (2001)Google Scholar
  12. 12.
    Chaum, D.L.: Untraceable electronic mail, return addresses, and digital pseudonyms. Communications of the ACM 24(2), 84–88 (1981)CrossRefGoogle Scholar
  13. 13.
    Cottrell, L.: Frequently asked questions about Mixmaster remailers (2000),
  14. 14.
    Dingledine, R., Mathewson, N., Syverson, P.: Tor: The Second-Generation Onion Router. In: Proceedings of the 13th USENIX Security Symposium (2004)Google Scholar
  15. 15.
    Anonymizer (2000),
  16. 16.
    Chor, B., Goldreich, O., Kushilevitz, E., Sudan, M.: Private information retrieval. Journal of the ACM 45(6), 965–982 (1998)MATHCrossRefMathSciNetGoogle Scholar
  17. 17.
    Reiter, M.K., Rubin, A.D.: Anonymous web transactions with Crowds. Communications of the ACM 42(2), 32–38 (1999)CrossRefGoogle Scholar
  18. 18.
    Berthold, O., Federrath, H., Kopsell, S.: Web MIXes: a system for anonymous and unobservable Internet access. In: Federrath, H. (ed.) Designing Privacy Enhancing Technologies. LNCS, vol. 2009, p. 115. Springer, Heidelberg (2001)CrossRefGoogle Scholar
  19. 19.
    The Rewebber (2000),
  20. 20.
    Anderson, R.J.: The Eternity service. In: Proceedings of the 1st International Conference on the Theory and Applications of Cryptology (PRAGOCRYPT 1996), Prague, Czech Republic (1996)Google Scholar
  21. 21.
    Dingledine, R., Freedman, M.J., Molnar, D.: The Free Haven project: distributed anonymous storage service. In: Federrath, H. (ed.) Designing Privacy Enhancing Technologies. LNCS, vol. 2009, p. 67. Springer, Heidelberg (2001)CrossRefGoogle Scholar
  22. 22.
    MUTE: Simple, Anonymous File Sharing,
  23. 23.
    Freedman, M.J., Morris, R.: Tarzan: A Peer-to-Peer Anonymizing Network Layer. In: Druschel, P., Kaashoek, M.F., Rowstron, A. (eds.) IPTPS 2002. LNCS, vol. 2429, p. 121. Springer, Heidelberg (2002)CrossRefGoogle Scholar
  24. 24.
    Bono, S.C., Soghoian, C.A., Monrose, F.: Mantis: A Lightweight, Server-Anonymity Preserving, Searchable P2P, Information Security Institute of The Johns Hopkins University, Technical Report TR-2004-01-B-ISI-JHU (2004)Google Scholar

Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • Byungryong Kim
    • 1
  1. 1.DongBang Data Technonogy Co., Ltd.SeoulKorea

Personalised recommendations