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Canetti, Lin and Paneth in TCC 2013 showed a O>(log1+εn) rounds public-coin concurrent zero-knowledge argument system (CZK) based on the existence of collision resistant hash functions, which is currently known as round optimal public-coin CZK from standard assumptions. In this paper, we further address this problem and present an alternative construction of public-coin CZK argument system with...
Canetti, Goldreich, Goldwasser, and Micali (STOC 2000) introduced the notion of resettable zero-knowledge proofs, where the protocol must be zero-knowledge even if a cheating verifier can reset the prover and have several interactions in which the prover uses the same random tape. Soon afterwards, Barak, Goldreich, Goldwasser, and Lindell (FOCS 2001) studied the closely related notion of resettable...
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