Basing non-interactive zero-knowledge on (enhanced) trapdoor permutations: the state of the art

  • Authors:
  • Oded Goldreich

  • Affiliations:
  • Faculty of Mathematics and Computer Science, The Weizmann Institute of Science, Israel

  • Venue:
  • Studies in complexity and cryptography
  • Year:
  • 2011
  • Certifying RSA

    ASIACRYPT'12 Proceedings of the 18th international conference on The Theory and Application of Cryptology and Information Security

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Abstract

The purpose of this article is to correct the inaccurate account of this subject that is provided in our two-volume work Foundation of Cryptography. Specifically, as pointed out by Jonathan Katz, it seems that the construction of Non-Interactive Zero-Knowledge proofs for NP requires the existence of a doubly-enhanced collection of trapdoor permutations (to be defined below). We stress that the popular candidate collections of trapdoor permutations do satisfy this doubly-enhanced condition. In fact, any collection of trapdoor permutations that has dense and easily recognizable domain satisfies this condition.