Paper 2014/295
ZAPs and Non-Interactive Witness Indistinguishability from Indistinguishability Obfuscation
Nir Bitansky and Omer Paneth
Abstract
We present new constructions of two-message and one-message witness-indistinguishable proofs (ZAPs and NIWIs). This includes: \begin{itemize} \item ZAP (or, equivalently, non-interactive zero-knowledge in the common random string model) from indistinguishability obfuscation and one-way functions. \item NIWIs from indistinguishability obfuscation and one-way permutations. \end{itemize} The previous construction of ZAPs [Dwork and Naor, FOCS 00] was based on trapdoor permutations. The two previous NIWI constructions were based either on ZAPs and a derandomization-type complexity assumption [Barak, Ong, and Vadhan CRYPTO 03], or on a specific number theoretic assumption in bilinear groups [Groth, Sahai, and Ostrovsky, CRYPTO 06].
Metadata
- Available format(s)
-
PDF
- Category
- Foundations
- Publication info
- A minor revision of an IACR publication in TCC 2015
- Keywords
- ZAPNIZKObfuscationNIWI
- Contact author(s)
- nirbitan @ tau ac il
- History
- 2015-02-12: revised
- 2014-04-30: received
- See all versions
- Short URL
- https://ia.cr/2014/295
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2014/295,
author = {Nir Bitansky and Omer Paneth},
title = {{ZAPs} and Non-Interactive Witness Indistinguishability from Indistinguishability Obfuscation},
howpublished = {Cryptology {ePrint} Archive, Paper 2014/295},
year = {2014},
url = {https://eprint.iacr.org/2014/295}
}
