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12:00 noon A Dolev-Yao model for Zero Knowledge A. Baskar Chennai Mathematical Institute 03-12-09 Abstract We propose an extension of the standard Dolev-Yao model of cryptographic protocols to facilitate symbolic reasoning about zero- knowledge proofs. This is accomplished by communicating typed terms, and providing a proof amounts to certifying that a term is of a particular type. We present a proof system for term derivability, which is employed to yield a decision procedure for checking whether a given protocol meets its zero knowledge speciļ¬cation.
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