Zero knowledge proofs of identity
STOC '87 Proceedings of the nineteenth annual ACM symposium on Theory of computing
A knowledge-based analysis of zero knowledge
STOC '88 Proceedings of the twentieth annual ACM symposium on Theory of computing
The knowledge complexity of interactive proof systems
SIAM Journal on Computing
Witness indistinguishable and witness hiding protocols
STOC '90 Proceedings of the twenty-second annual ACM symposium on Theory of computing
Knowledge, probability, and adversaries
Journal of the ACM (JACM)
Reasoning about knowledge
TARK '88 Proceedings of the 2nd conference on Theoretical aspects of reasoning about knowledge
Journal of the ACM (JACM)
Foundations of Cryptography: Volume 1
Foundations of Cryptography: Volume 1
Random self-reducibility and zero knowledge interactive proofs of possession of information
SFCS '87 Proceedings of the 28th Annual Symposium on Foundations of Computer Science
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Halpern, Moses and Tuttle presented a definition of interactive proofs using a notion they called practical knowledge, but left open the question of finding an epistemic formula that completely characterizes zero knowledge; that is, a formula that holds iff a proof is zero knowledge. We present such a formula, and show that it does characterize zero knowledge. Moreover, we show that variants of the formula characterize variants of zero knowledge such as concurrent zero knowledge [Dwork, Naor, and Sahai 2004] and proofs of knowledge [Feige, Fiat, and Shamir 1987; Tompa and Woll 1987].