Next meetup scheduled: Designs for practical SHE schemes based on Ring-LWR
on January 25th, 4pm CEST (Paris, FR)
Greetings cryptographers!
šļø The next FHE.org meetup is scheduled for Thursday, January 25th at 4pm CEST (Paris, FR).
The meetup features Erin Hales, a final year PhD student at Royal Holloway, University of London, presenting Designs for practical SHE schemes based on Ring-LWR.
Here is the link to register:
Abstract
The Learning with Errors problem (LWE) and its variants are among the most popular assumptions underlying lattice-based cryptography. The Learning with Rounding problem (LWR) can be thought of as a deterministic variant of LWE. While lattice-based cryptography is known to enable many advanced constructions, constructing Fully Homomorphic Encryption schemes based on LWR remains an under-explored part of the literature.
In this talk, I will introduce the LWR problem, and describe how to construct Somewhat Homomorphic Encryption schemes based on Ring-LWR that are the analogue of the Ring-LWE-based BFV scheme. We will discuss new LWR-based SHE schemes in the LPR and Regev paradigms. The Regev-type scheme can be seen as a generalisation of the only prior work in this direction (Costache-Smart, 2017). Both schemes present several improvements compared to this prior work, and in particular we resolve the ātangled modulusā issue in the Costache-Smart scheme that led to unmanageable noise growth. The talk will discuss the benefits of basing constructions on LWR, as well as the challenges this can bring.
This is joint work with M. Bolboceanu, A. Costache, R. Player, M. Rosca, R. Titiu.
About the speakers
Erin Hales is a final year PhD student at Royal Holloway, University of London. She works on homomorphic encryption, and in particular security assumptions and parameter choices.
Resources from last meetup
Weāre happy to have had Duhyeong Kim this week presenting on High-precision RNS-CKKS on small word-size architectures.
You can access those resources on the FHE.org website here.
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Join us for a full day of interesting presentations, tutorials, poster presentations, contributed and invited talks, as well as our very own after-party event. All info about the conference on the official page here.
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The FHE.org team