| Michael Kinateder
| creator |
Kinateder, Michael
| | Terdic, Ralf
| | Rothermel, Kurt
| | date |
2005-03-13
| | | | description |
In this paper we present a unique approach to enable untraceable
communication between pseudonyms. In contrast to the related work,
our approach provides strong sender and recipient anonymity most
notably by eliminating the need to know of each other's
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). When a sender intends to communicate,
it contacts the DHT and requests the recipient's routing
header, which is then 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 easily applicable not only to other reputation systems
but also other application areas. We have implemented a prototype of
UniTEC and present the first results from an ongoing evaluation in
our network emulation testbed.
| | format |
application/pdf
| | 217333 Bytes | |