[Resource Topic] 2013/630: Estimating Key Sizes For High Dimensional Lattice-Based Systems

Welcome to the resource topic for 2013/630

Title:
Estimating Key Sizes For High Dimensional Lattice-Based Systems

Authors: Joop van de Pol, Nigel P. Smart

Abstract:

We revisit the estimation of parameters for use in applications of the BGV homomorphic encryption system, which generally require high dimensional lattices. In particular, we utilize the BKZ-2.0 simulator of Chen and Nguyen to identify the best lattice attack that can be mounted using BKZ in a given dimension at a given security level. Using this technique, we show that it should be possible to work with lattices of smaller dimensions than previous methods have recommended, while still maintaining reasonable levels of security. As example applications we look at the evaluation of AES via FHE operations presented at Crypto 2012, and the parameters for the SHE variant of BGV used in the SPDZ protocol from Crypto 2012.

ePrint: https://eprint.iacr.org/2013/630

See all topics related to this paper.

Feel free to post resources that are related to this paper below.

Example resources include: implementations, explanation materials, talks, slides, links to previous discussions on other websites.

For more information, see the rules for Resource Topics .