2001 | OriginalPaper | Buchkapitel
Min-round Resettable Zero-Knowledge in the Public-Key Model
verfasst von : Silvio Micali, Leonid Reyzin
Erschienen in: Advances in Cryptology — EUROCRYPT 2001
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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In STOC 2000, Canetti, Goldreich, Goldwasser, and Micali put forward the strongest notion of zero-knowledge to date, resettable zero-knowledge (RZK) and implemented it in constant rounds in a new model, where the verifier simply has a public key registered before any interaction with the prover.To achieve ultimate round efficiency, we advocate a slightly stronger model. Informally, we show that, as long as the honest verifier does not use a given public key more than a fixed-polynomial number of times, there exist 3-round (which we prove optimal) RZK protocols for all of NP.