Welcome to the resource topic for 2015/954
Title:
Online-Offline Homomorphic Signatures for Polynomial Functions
Authors: Kaoutar Elkhiyaoui, Melek Önen, Refik Molva
Abstract:The advent of cloud computing has given rise to a plethora of work on verifiable delegation of computation. Homomorphic signatures are powerful tools that can be tailored for verifiable computation, as long as they are efficiently verifiable. The main advantages of homomorphic signatures for verifiable computation are twofold: \begin{inparaenum}[(i)] \item Any third party can verify the correctness of the delegated computation, \item and this third party is not required to have access to the dataset on which the computation was performed. \end{inparaenum} In this paper, we design a homomorphic signature suitable for multivariate polynomials of bounded degree, which draws upon the algebraic properties of \emph{eigenvectors} and \emph{leveled multilinear maps}. The proposed signature yields an efficient verification process (in an amortized sense) and supports online-offline signing. Furthermore, our signature is provably secure and its size grows only linearly with the degree of the evaluated polynomial.
ePrint: https://eprint.iacr.org/2015/954
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