Key management for onion routing in a true peer to peer setting

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dc.contributor.author Palmieri, Paolo
dc.contributor.author Pouwelse, Johan A.
dc.date.accessioned 2017-09-21T15:06:05Z
dc.date.available 2017-09-21T15:06:05Z
dc.date.issued 2014-08
dc.identifier.citation Palmieri, P. and Pouwelse, J. (2014) 'Key Management for Onion Routing in a True Peer to Peer Setting', in Yoshida, M. & Mouri, K. (eds.) Advances in Information and Computer Security: 9th International Workshop on Security, IWSEC 2014, Hirosaki, Japan, August 27-29, 2014. Proceedings. Cham: Springer International Publishing, pp. 62-71. doi: 10.1007/978-3-319-09843-2_5 en
dc.identifier.startpage 62 en
dc.identifier.endpage 71 en
dc.identifier.isbn 978-3-319-09843-2
dc.identifier.uri http://hdl.handle.net/10468/4764
dc.identifier.doi 10.1007/978-3-319-09843-2_5
dc.description.abstract Onion routing is a technique for anonymous and privacy preserving communication at the base of popular Internet anonymity tools such as Tor. In onion routing, traffic is relayed by a number of intermediary nodes (called relays) before it reaches the intended destination. To guarantee privacy and prevent tampering, each packet is encrypted multiple times in a layered manner, using the public keys of the relays. Therefore, this mechanism makes two important assumptions: first, that the relays are able to communicate with each other; second, that the user knows the list of available relays and their respective public keys. Tor implements therefore a distributed directory listing the relays and their keys. When a user is not able to communicate with relays directly, he has to use special bridge servers to connect to the onion network. This construction, however, does not work in a fully peer to peer setting, where each peer only knows a limited number of other peers and may not be able to communicate with some of them due, for instance, to NAT or firewalls. In this paper we propose a key management scheme for onion routing that overcomes these problems. The proposed solution does not need a directory system and does not imply knowledge of all active relays, while it guarantees the secure distribution of public keys. We also present an alternative strategy for building circuit of relays based on bloom filters. The proposed construction overcomes some of the structural inefficiencies of the Tor design, and opens the way for implementing onion routing over a true peer to peer overlay network. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Springer International Publishing en
dc.relation.ispartof Advances in Information and Computer Security - 9th International Workshop on Security, IWSEC 2014, Hirosaki, Japan, August 27-29, 2014. Proceedings
dc.relation.uri https://link.springer.com/chapter/10.1007/978-3-319-09843-2_5
dc.rights © Springer International Publishing Switzerland 2014. The final publication is available at Springer via http://doi.org/10.1007/978-3-319-09843-2_5 en
dc.subject Key managament en
dc.subject Onion routing en
dc.subject Peer to peer en
dc.title Key management for onion routing in a true peer to peer setting en
dc.type Conference item en
dc.internal.authorcontactother Paolo Palmieri, Computer Science, University College Cork, Cork, Ireland. +353-21-490-3000 Email: paolo.palmieri@ucc.ie en
dc.internal.availability Full text available en
dc.date.updated 2017-09-20T15:33:48Z
dc.description.version Accepted Version en
dc.internal.rssid 411793276
dc.description.status Peer reviewed en
dc.identifier.journaltitle Advances in Information and Computer Security: 9th International Workshop on Security, IWSEC 2014 en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress paolo.palmieri@ucc.ie en


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