Welcome to the resource topic for 2015/125
Title:
Multilinear Pseudorandom Functions
Authors: Aloni Cohen, Justin Holmgren
Abstract:We define the new notion of a multilinear pseudorandom function (PRF), and give a construction with a proof of security assuming the hardness of the decisional Diffie-Hellman problem. A direct application of our construction yields (non-multilinear) PRFs with aggregate security from the same assumption, resolving an open question of Cohen, Goldwasser, and Vaikuntanathan. Additionally, multilinear PRFs give a new way of viewing existing algebraic PRF constructions: our main theorem implies they too satisfy aggregate security.
ePrint: https://eprint.iacr.org/2015/125
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