735 citations · 1.2k across the 26 of their papers we have counts for
26 papers
Adaptive versus Static Multi-oracle Algorithms, and Quantum Security of a Split-key PRF
Jelle Don, Serge Fehr, Yu-Hsuan Huang
In the first part of the paper, we show a generic compiler that transforms any oracle algorithm that can query multiple oracles adaptively, i.e., can decide on which oracle to quer…
Efficient NIZKs and Signatures from Commit-and-Open Protocols in the QROM
Jelle Don, Serge Fehr, Christian Majenz +1
Commit-and-open Sigma-protocols are a popular class of protocols for constructing non-interactive zero-knowledge arguments and digital-signature schemes via the Fiat-Shamir transfo…
Online-Extractability in the Quantum Random-Oracle Model
Jelle Don, Serge Fehr, Christian Majenz +1
We show the following generic result. Whenever a quantum query algorithm in the quantum random-oracle model outputs a classical value that is promised to be in some tight relat…
On the Compressed-Oracle Technique, and Post-Quantum Security of Proofs of Sequential Work
Kai-Min Chung, Serge Fehr, Yu-Hsuan Huang +1
We revisit the so-called compressed oracle technique, introduced by Zhandry for analyzing quantum algorithms in the quantum random oracle model (QROM). To start off with, we offer…
The Measure-and-Reprogram Technique 2.0: Multi-Round Fiat-Shamir and More
Jelle Don, Serge Fehr, Christian Majenz
We revisit recent works by Don, Fehr, Majenz and Schaffner and by Liu and Zhandry on the security of the Fiat-Shamir transformation of -protocols in the quantum random oracle mo…
Security of the Fiat-Shamir Transformation in the Quantum Random-Oracle Model
Jelle Don, Serge Fehr, Christian Majenz +1
The famous Fiat-Shamir transformation turns any public-coin three-round interactive proof, i.e., any so-called sigma-protocol, into a non-interactive proof in the random-oracle mod…