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A Defense Against Replay Attacks on Chaumian Mixes

Georg Wittenburg— 2003

This paper describes the replay attack against traditional and channel-based Chaumian mixes and puts it into context with other attacks on anonymizing services. It then evaluates different possible approaches to a defense against said attack, concentrating on the question of efficiently recognizing potentially compromised messages within a channel-based cascade of mixes. Finally, an exemplary implementation of a solution is presented for the anonymizing cascade of mixes of the AN.ON project.

TitelA Defense Against Replay Attacks on Chaumian Mixes
VerfasserGeorg Wittenburg
Verlag2003
ThemaNetwork Security, Replay Attack, Chaumian Mix, Cascade of Mixes, David L. Chaum, Anonymity, Unobservability, Traffic Analysis, AN.ON, JAP
Datum2003
Quelle/n
Spracheeng
ArtText
BibTeX Code@misc{wittenburg03defense, author = {Georg Wittenburg}, title = {{A Defense Against Replay Attacks on Chaumian Mixes}}, howpublished = {Bachelor thesis, Department of Mathematics and Computer Science, Freie Universit{\"a}t Berlin, Berlin, Germany}, month = {}, year = {2003}, abstract = {This paper describes the replay attack against traditional and channel-based Chaumian mixes and puts it into context with other attacks on anonymizing services. It then evaluates different possible approaches to a defense against said attack, concentrating on the question of efficiently recognizing potentially compromised messages within a channel-based cascade of mixes. Finally, an exemplary implementation of a solution is presented for the anonymizing cascade of mixes of the AN.ON project.}, day = {15}, file = {http://cst.mi.fu-berlin.de/papers/wittenburg03defense.pdf}, keywords = {Replay Attack, Chaumian Mix, Cascade of Mixes, David L. Chaum, Anonymity, Unobservability, Traffic Analysis, AN.ON, JAP}, theme = {nsec} }