Non-black-box simulation from one-way functions and applications to resettable security

SIAM J. Comput.(2016)

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摘要
The simulation paradigm, introduced by Goldwasser, Micali and Rackoff, is of fundamental importance to modern cryptography. In a breakthrough work from 2001, Barak (FOCS'01) introduced a novel non-black-box simulation technique. This technique enabled the construction of new cryptographic primitives, such as resettably-sound zero-knowledge arguments, that cannot be proven secure using just black-box simulation techniques. The work of Barak and its follow-ups, however, all require stronger cryptographic hardness assumptions than the minimal assumption of one-way functions. In this work, we show how to perform non-black-box simulation assuming just the existence of one-way functions. In particular, we demonstrate the existence of a constant-round resettably-sound zero-knowledge argument based only on the existence of one-way functions. Using this technique, we determine necessary and sufficient assumptions for several other notions of resettable security of zero-knowledge proofs. An additional benefit of our approach is that it seemingly makes practical implementations of non-black-box zero-knowledge viable.
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关键词
novel non-black-box simulation technique,resettable security,resettably-sound zero-knowledge argument,one-way function,non-black-box simulation,breakthrough work,simulation paradigm,new cryptographic primitive,constant-round resettably-sound zero-knowledge argument,zero-knowledge proof,black-box simulation technique,security,cryptography,zero knowledge,one way functions
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