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Concurrent Zero-Knowledge With Additional Background by Oded Goldreich /

Zero-knowledge proofs are fascinating and extremely useful constructs. Their fascinating nature is due to their seemingly contradictory de?nition; ze- knowledge proofs are convincing and yet yield nothing beyond the validity of the assertion being proved. Their applicability in the domain of cryptog...

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Detalles Bibliográficos
Clasificación:Libro Electrónico
Autor principal: Rosen, Alon (Autor)
Autor Corporativo: SpringerLink (Online service)
Formato: Electrónico eBook
Idioma:Inglés
Publicado: Berlin, Heidelberg : Springer Berlin Heidelberg : Imprint: Springer, 2006.
Edición:1st ed. 2006.
Colección:Information Security and Cryptography,
Temas:
Acceso en línea:Texto Completo

MARC

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505 0 |a A Brief Introduction to Zero-Knowledge (by Oded Goldreich) -- to Concurrent Zero-Knowledge -- Preliminaries -- c Proof Systems for -- c in Logarithmically Many Rounds -- A Simple Lower Bound -- Black-Box c Requires Logarithmically Many Rounds -- Conclusions and Open Problems -- A Brief Account of Other Developments (by Oded Goldreich). 
520 |a Zero-knowledge proofs are fascinating and extremely useful constructs. Their fascinating nature is due to their seemingly contradictory de?nition; ze- knowledge proofs are convincing and yet yield nothing beyond the validity of the assertion being proved. Their applicability in the domain of cryptography is vast; they are typically used to force malicious parties to behave according to a predetermined protocol. In addition to their direct applicability in cr- tography, zero-knowledge proofs serve as a good benchmark for the study of variousproblemsregardingcryptographicprotocols(e.g.,"securecomposition of protocols"). A fundamental question regarding zero-knowledge protocols refers to the preservation of security (i.e., of the zero-knowledge feature) when many - stances are executed concurrently, and in particular under a purely as- chronous model. The practical importance of this question, in the days of extensive Internet communication, seems clear. It turned out that this qu- tion is also very interesting from a theoretical point of view. In particular, this question served as a benchmark for the study of the security of concurrent executions of protocols and led to the development of techniques for coping with the problems that arise in that setting. 
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