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Randomized Partial Checking Revisited
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.
KTH, School of Computer Science and Communication (CSC), Theoretical Computer Science, TCS.ORCID iD: 0000-0003-4157-1371
2012 (English)Manuscript (preprint) (Other academic)
Abstract [en]

We study mix-nets with randomized partial checking (RPC) as proposed by Jakobsson, Juels, and Rivest (2002). RPC is a technique to verify the correctness of an execution both for Chaumian and homomorphic mix-nets. The idea is to relax the correctness and privacy requirements to achieve a more efficient mix-net.

We identify serious issues in the original description of mix-nets with RPC and show how to exploit these to break both correctness and privacy, both for Chaumian and homomorphic mix-nets. Our attacks are practical and applicable to real world mix-net implementations, e.g., the Civitas and the Scantegrity voting systems.

Place, publisher, year, edition, pages
2012. Vol. 2012
Keyword [en]
cryptographic protocols, mix-net, election schemes
National Category
Computer Science
Identifiers
URN: urn:nbn:se:kth:diva-112830OAI: oai:DiVA.org:kth-112830DiVA: diva2:587568
Note

QC 20130502

Available from: 2013-01-14 Created: 2013-01-14 Last updated: 2017-04-04Bibliographically approved

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Wikström, Douglas

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