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IEICE TRANSACTIONS on Fundamentals

A Constant-Round Resettably-Sound Resettable Zero-Knowledge Argument in the BPK Model

Seiko ARITA

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Summary :

In resetting attacks against a proof system, a prover or a verifier is reset and enforced to use the same random tape on various inputs as many times as an adversary may want. Recent deployment of cloud computing gives these attacks a new importance. This paper shows that argument systems for any NP language that are both resettably-sound and resettable zero-knowledge are possible by a constant-round protocol in the BPK model. For that sake, we define and construct a resettably-extractable conditional commitment scheme.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E95-A No.8 pp.1390-1401
Publication Date
2012/08/01
Publicized
Online ISSN
1745-1337
DOI
10.1587/transfun.E95.A.1390
Type of Manuscript
PAPER
Category
Cryptography and Information Security

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