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Journal of Computer and System Sciences - 17th Annual ACM Symposium in the Theory of Computing, May 6-8, 1985
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A note on efficient zero-knowledge proofs and arguments (extended abstract)
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On the existence of statistically hiding bit commitment schemes and fail-stop signatures
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On the Composition of Zero-Knowledge Proof Systems
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On transformation of interactive proofs that preserve the prover's complexity
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Foundations of Cryptography: Basic Tools
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FOCS '01 Proceedings of the 42nd IEEE symposium on Foundations of Computer Science
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On the Composition of Public-Coin Zero-Knowledge Protocols
CRYPTO '09 Proceedings of the 29th Annual International Cryptology Conference on Advances in Cryptology
A linear lower bound on the communication complexity of single-server private information retrieval
TCC'08 Proceedings of the 5th conference on Theory of cryptography
An equivalence between zero knowledge and commitments
TCC'08 Proceedings of the 5th conference on Theory of cryptography
On the round complexity of zero-knowledge proofs based on one-way permutations
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Towards non-black-box lower bounds in cryptography
TCC'11 Proceedings of the 8th conference on Theory of cryptography
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Goldreich-Krawczyk (Siam J of Comp’96) showed that only languages in BPP have constant-round public-coin black-box zero-know-ledge protocols. We extend their lower bound to “fully black-box” private-coin protocols based on one-way functions. More precisely, we show that only languages in BPPSam—where Sam is a “collision-finding” oracle in analogy with Simon (Eurocrypt’98) and Haitner et. al (FOCS’07)—can have constant-round fully black-box zero-knowledge proofs; the same holds for constant-round fully black-box zero-knowledge arguments with sublinear verifier communication complexity. We also establish near-linear lower bounds on the round complexity of fully black-box concurrent zero-knowledge proofs (or arguments with sublinear verifier communication) for languages outside BPPSam. The technique used to establish these results is a transformation from private-coin protocols into Sam-relativized public-coin protocols; for the case of fully black-box protocols based on one-way functions, this transformation preserves zero knowledge, round complexity and communication complexity.