# NIZKs with an Untrusted CRS: Security in the Face of Parameter Subversion

3 CASCADE - Construction and Analysis of Systems for Confidentiality and Authenticity of Data and Entities
DI-ENS - Département d'informatique - ENS Paris, CNRS - Centre National de la Recherche Scientifique : UMR 8548, Inria de Paris
Abstract : Motivated by the subversion of trusted'' public parameters in mass-surveillance activities, this paper studies the security of NIZKs in the presence of a maliciously chosen common reference string. We provide definitions for subversion soundness, subversion witness indistinguishability and subversion zero knowledge. We then provide both negative and positive results, showing that certain combinations of goals are unachievable but giving protocols to achieve other combinations.
Document type :
Conference papers
Complete list of metadata

https://hal.inria.fr/hal-01384384
Contributor : Georg Fuchsbauer Connect in order to contact the contributor
Submitted on : Wednesday, October 19, 2016 - 6:08:57 PM
Last modification on : Wednesday, June 8, 2022 - 12:50:03 PM

### Identifiers

• HAL Id : hal-01384384, version 1

### Citation

Mihir Bellare, Georg Fuchsbauer, Alessandra Scafuro. NIZKs with an Untrusted CRS: Security in the Face of Parameter Subversion. Advances in Cryptology - ASIACRYPT 2016 - 22nd International Conference on the Theory and Application of Cryptology and Information Security, Dec 2016, Hanoi, Vietnam. ⟨hal-01384384⟩

Record views