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Erschienen in:
1993 | OriginalPaper | Buchkapitel
Invariant Signatures and Non-Interactive Zero-Knowledge Proofs are Equivalent
Extended Abstract
verfasst von : Shafi Goldwasser, Rafail Ostrovsky
Erschienen in: Advances in Cryptology — CRYPTO’ 92
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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The standard definition of digital signatures allows a document to have many valid signatures. In this paper, we consider a subclass of digital signatures, called invariant signatures, in which all legal signatures of a document must be identical according to some polynomial-time computable function (of a signature) which is hard to predict given an unsigned document. We formalize this notion and show its equivalence to non-interactive zero-knowledge proofs.