Welcome to the resource topic for 2018/458
Title:
Characterizing Collision and Second-Preimage Resistance in Linicrypt
Authors: Ian McQuoid, Trevor Swope, Mike Rosulek
Abstract:Linicrypt (Carmer & Rosulek, Crypto 2016) refers to the class of algorithms that make calls to a random oracle and otherwise manipulate values via fixed linear operations. We give a characterization of collision-resistance and second-preimage resistance for a significant class of Linicrypt programs (specifically, those that achieve domain separation on their random oracle queries via nonces). Our characterization implies that collision-resistance and second-preimage resistance are equivalent, in an asymptotic sense, for this class. Furthermore, there is a polynomial-time procedure for determining whether such a Linicrypt program is collision/second-preimage resistant.
ePrint: https://eprint.iacr.org/2018/458
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