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» Concurrent Zero-Knowledge
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EUROCRYPT
2003
Springer
14 years 18 days ago
Resettable Zero-Knowledge in the Weak Public-Key Model
A new public-key model for resettable zero-knowledge (rZK) protocols, which is an extension and generalization of the upper-bounded public-key (UPK) model introduced by Micali and ...
Yunlei Zhao, Xiaotie Deng, Chan H. Lee, Hong Zhu
CRYPTO
2009
Springer
144views Cryptology» more  CRYPTO 2009»
14 years 2 months ago
On the Composition of Public-Coin Zero-Knowledge Protocols
Abstract. We show that only languages in BPP have public-coin, blackbox zero-knowledge protocols that are secure under an unbounded (polynomial) number of parallel repetitions. Thi...
Rafael Pass, Wei-Lung Dustin Tseng, Douglas Wikstr...
EUROCRYPT
2006
Springer
13 years 11 months ago
Perfect Non-interactive Zero Knowledge for NP
Non-interactive zero-knowledge (NIZK) proof systems are fundamental cryptographic primitives used in many constructions, including CCA2-secure cryptosystems, digital signatures, an...
Jens Groth, Rafail Ostrovsky, Amit Sahai
TCC
2010
Springer
179views Cryptology» more  TCC 2010»
14 years 4 months ago
Private Coins versus Public Coins in Zero-Knowledge Proof Systems
Goldreich-Krawczyk (Siam J of Comp’96) showed that only languages in BPP have constant-round public-coin black-box zero-knowledge protocols. We extend their lower bound to “ful...
Rafael Pass, Muthuramakrishnan Venkitasubramaniam
TAMC
2007
Springer
14 years 1 months ago
A Note on Universal Composable Zero Knowledge in Common Reference String Model
Pass observed that universal composable zero-knowledge (UCZK) protocols in the common reference string (CRS) model, where a common reference string is selected trustily by a truste...
Andrew Chi-Chih Yao, Frances F. Yao, Yunlei Zhao