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Title:
A constant-round resettably-sound resettable zero-knowledge argument in the BPK model
Authors: Seiko Arita
Abstract: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 {\em conditional} commitment scheme.
ePrint: https://eprint.iacr.org/2011/404
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