Welcome to the resource topic for 2016/310
Title:
Coded-BKW: Solving LWE Using Lattice Codes
Authors: Qian Guo, Thomas Johansson, Paul Stankovski
Abstract:In this paper we propose a new algorithm for solving the Learning With Errors (LWE) problem based on the steps of the famous Blum-Kalai-Wasserman (BKW) algorithm. The new idea is to introduce an additional procedure of mapping subvectors into codewords of a lattice code, thereby increasing the amount of positions that can be cancelled in each BKW step. The procedure introduces an additional noise term, but it is shown that by using a sequence of lattice codes with different rates the noise can be kept small. Developed theory shows that the new approach compares favorably to previous methods. It performs particularly well for the binary-LWE case, i.e., when the secret vector is sampled from (0,1)^*.
ePrint: https://eprint.iacr.org/2016/310
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