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How Risky Is the Random-Oracle Model? [PDF]

open access: yesLecture Notes in Computer Science, 2009
RSA-FDH and many other schemes secure in the Random-Oracle Model (ROM) require a hash function with output size larger than standard sizes. We show that the random-oracle instantiations proposed in the literature for such cases are weaker than a random oracle, including the proposals by Bellare and Rogaway from 1993 and 1996, and the ones implicit in ...
Gaëtan Leurent   +2 more
exaly   +3 more sources

Adaptive Proofs of Knowledge in the Random Oracle Model [PDF]

open access: yesLecture Notes in Computer Science, 2015
The authors define a notion of adaptive proofs of knowledge (PoKs) in the random oracle model (ROM). These are proofs where the malicious prover can adaptively issue multiple statements and proofs, and where the extractor is supposed to extract a witness for each statement.
David Bernhard   +2 more
exaly   +7 more sources

Non-Observable Quantum Random Oracle Model

Lecture Notes in Computer Science, 2023
Varun Maram   +2 more
exaly   +3 more sources

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