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Erschienen in:
2011 | OriginalPaper | Buchkapitel
Concurrent Non-Malleable Zero Knowledge with Adaptive Inputs
verfasst von : Huijia Lin, Rafael Pass
Erschienen in: Theory of Cryptography
Verlag: Springer Berlin Heidelberg
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Concurrent non-malleable zero-knowledge (
$\mathcal{CN}\!\mathcal{MZK}$
) considers the concurrent execution of zero-knowledge protocols in a setting where the attacker can simultaneously corrupt multiple provers and verifiers. We provide the first construction of a
$\mathcal{CN}\!\mathcal{MZK}$
protocol that, without any trusted set-up, remains secure even if the attacker may adaptively select the statements to receive proofs of; previous works only handle scenarios where the statements are fixed at the beginning of the execution, or chosen adaptively from a restricted set of statements.