| Michael Kinateder
| creator |
Kinateder, Michael
| | Terdic, Ralf
| | Rothermel, Kurt
| | date |
2005-09
| | | | description |
In this paper we present a novel approach to enable untraceable
communication between pseudonyms. Our work provides strong sender
and recipient anonymity by eliminating the need to know of each
others address.
We use a variation of Chaum mixes to achieve unlinkability between
sender and recipient and introduce a concept called extended
destination routing (EDR) which relies on routing headers
constructed in multiple layers of encryption and published in a
distributed hash table (DHT). In order to communicate, a sender
requests from the DHT the recipients routing header, which is
extended and used for routing the message via a mix cascade to this
recipient.
This work was performed in the context of the UniTEC reputation
system and describes the functionality of its anonymous
communication layer, which is completely independent of the other
UniTEC layers. Although trust and reputation systems in general are
typical application areas for our contribution, the presented
concepts are suitable for various other application areas as well.
We have implemented a prototype of UniTEC and present results from
an ongoing evaluation in our network emulation testbed.
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