Technical Report CS0710

TR#:CS0710
Class:CS
Title: ON DEFINING PROOFS OF KNOWLEDGE
Authors: O. Goldreich
PDF - RevisedCS0710.revised.pdf
Abstract: The notion of a ``proof of knowledge'', introduced by Goldwasser, Micali and Rackoff, has been used in several works as a tool for the construction of cryptographic protocols and other schemes. Yet, the formalizations of this notion appearing in the literature are unsatisfactory and in particular inadequate for some of the applications in which they are used. The purpose of this note is to point out the source to these problems and to suggest a definition which resolves them.
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