Title
Faster Linear Transformations In Helib, Revisited
Abstract
HElib is a C++ library that implements fully homomorphic encryption (FHE). This supports homomorphic linear transformations on plaintext slots which consist of many rotation operations on plaintext slots, and currently, each rotation involves one or two automorphisms. In this paper, we describe a new method for linear transformations that perform only one automorphism for the rotation operation for many kinds of linear transformations. We then further investigate our new method to have algorithmic improvement, which can be understood as a generalization of the baby-step/giant-step strategy on HElib. Finally, we verify that our improvement works well by implementation, and see 2-4 times speedup than the current HElib implementation.
Year
DOI
Venue
2019
10.1109/ACCESS.2019.2911300
IEEE ACCESS
Keywords
DocType
Volume
Fully homomorphic encryptions, implementation, linear transformations
Journal
7
ISSN
Citations 
PageRank 
2169-3536
0
0.34
References 
Authors
0
4
Name
Order
Citations
PageRank
Jung Hee Cheon11787129.74
Hyeongmin Choe200.34
Donghwan Lee3259.30
Yongha Son442.13