Paper 2021/039
Practical FHE parameters against lattice attacks
Jung Hee Cheon, Yongha Son, and Donggeon Yhee
Abstract
We give secure parameter suggestions to use sparse secret vectors in LWE based encryption schemes. This should replace existing security parameters, because homomorphic encryption(HE) schemes use quite different variables from the existing parameters. In particular HE schemes using sparse secrets should be supported by experimental analysis, here we summarize existing attacks to be considered and security levels for each attacks. Based on the analysis and experiments, we compute optimal scaling factors for CKKS.
Note: Acknowledge is modified.
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint. MINOR revision.
- Keywords
- fully homomorphic encryptionsparse secretshybrid attacks
- Contact author(s)
- dgyhee @ gmail com
- History
- 2021-01-27: revised
- 2021-01-12: received
- See all versions
- Short URL
- https://ia.cr/2021/039
- License
-
CC BY
BibTeX
@misc{cryptoeprint:2021/039,
author = {Jung Hee Cheon and Yongha Son and Donggeon Yhee},
title = {Practical {FHE} parameters against lattice attacks},
howpublished = {Cryptology {ePrint} Archive, Paper 2021/039},
year = {2021},
url = {https://eprint.iacr.org/2021/039}
}
