Paper 2023/979
New Secret Keys for Enhanced Performance in (T)FHE
Abstract
Fully Homomorphic Encryption has known impressive improvements in the last 15 years, going from a technology long thought to be impossible to an existing family of encryption schemes able to solve a plethora of practical use cases related to the privacy of sensitive information.
Recent results mainly focus on improving techniques within the traditionally defined framework of GLWE-based schemes, but the recent CPU implementation improvements are mainly incremental.
To keep improving this technology, one solution is to modify the aforementioned framework, by using slightly different hardness assumptions.
In this paper, we identify two limitations with (T)FHE:
(i) there is no fine-grained control over the size of a GLWE secret key, which is traditionally composed of
Metadata
- Available format(s)
-
PDF
- Category
- Public-key cryptography
- Publication info
- Preprint.
- Keywords
- FHESecret KeyCryptographic Parameters
- Contact author(s)
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loris bergerat @ zama ai
jb orfila @ zama ai
adeline roux-langlois @ cnrs fr
samuel tap @ zama ai - History
- 2024-09-12: revised
- 2023-06-23: received
- See all versions
- Short URL
- https://ia.cr/2023/979
- License
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CC BY
BibTeX
@misc{cryptoeprint:2023/979, author = {Loris Bergerat and Ilaria Chillotti and Damien Ligier and Jean-Baptiste Orfila and Adeline Roux-Langlois and Samuel Tap}, title = {New Secret Keys for Enhanced Performance in (T){FHE}}, howpublished = {Cryptology {ePrint} Archive, Paper 2023/979}, year = {2023}, url = {https://eprint.iacr.org/2023/979} }