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Paper 2012/548

Efficient Modular NIZK Arguments from Shift and Product

Prastudy Fauzi and Helger Lipmaa and Bingsheng Zhang

Abstract

We propose a non-interactive product argument, that is more efficient than the one by Groth and Lipmaa, and a novel shift argument. We then use them to design several novel non-interactive zero-knowledge (NIZK) arguments. We obtain the first range proof with constant communication and subquadratic prover's computation. We construct NIZK arguments for $\mathbf{NP}$-complete languages, {\textsc{Set-Partition}}, {\textsc{Subset-Sum}} and {\textsc{Decision-Knapsack}}, with constant communication, subquadratic prover's computation and linear verifier's computation.

Note: Full version corresponding to a CANS 2013 paper

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Publication info
Published elsewhere. Unknown status
Keywords
FFTmulti-exponentiationnon-interactive zero knowledgeproduct argumentrange argumentshift argument
Contact author(s)
helger lipmaa @ gmail com
History
2013-09-09: last of 3 revisions
2012-09-22: received
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Short URL
https://ia.cr/2012/548
License
Creative Commons Attribution
CC BY
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