TY  - GEN
A1  - Leibowitz, H
A1  - Piotrowska, AM
A1  - Danezis, G
A1  - Herzberg, A
CY  - Santa Clara, CA, USA
SP  - 1841
EP  - 1858
T3  - Proceedings of the USENIX Security Symposium
ID  - discovery10116308
AV  - public
TI  - No Right to Remain Silent: Isolating Malicious Mixes
N1  - This version is the version of record. For information on re-use, please refer to the publisher?s terms and conditions.
UR  - https://www.usenix.org/conference/usenixsecurity19/presentation/leibowitz
Y1  - 2019/08/16/
N2  - Mix networks are a key technology to achieve network anonymity and private messaging, voting and database lookups. However, simple mix network designs are vulnerable to malicious mixes, which may drop or delay packets to facilitate traffic analysis attacks. Mix networks with provable robustness address this drawback through complex and expensive proofs of correct shuffling but come at a great cost and make limiting or unrealistic systems assumptions. We present Miranda, an efficient mix-net design, which mitigates active attacks by malicious mixes. Miranda uses both the detection of corrupt mixes, as well as detection of faults related to a pair of mixes, without detection of the faulty one among the two. Each active attack -- including dropping packets -- leads to reduced connectivity for corrupt mixes and reduces their ability to attack, and, eventually, to detection of corrupt mixes. We show, through experiments, the effectiveness of Miranda, by demonstrating how malicious mixes are detected and that attacks are neutralized early.
PB  - USENIX Association
ER  -