Next Meetup Scheduled: Efficient TFHE Bootstrapping in the Multiparty Setting
on June 1st, 4pm Paris - FR time
Greetings cryptographers!
Our 25th Meetup is scheduled for Thursday, June 1st at 4pm Paris - FR time.
The meetup features Sergi Rovira presenting Efficient TFHE Bootstrapping in the Multiparty Setting.
Here is the link to register:
Abstract
Many privacy preserving protocols are efficiently designed in a non-interactive way with practical implementation results thanks to recent improvements on FHE. However, some problems arise if we want to handle multiple users and also guarantee their input privacy.
If numerous users want to compute a common function keeping their input privacy, multi-key homomorphic encryption (MKHE) and multiparty homomorphic encryption (MPHE) (a.k.a. threshold-multikey FHE) are the best solutions for non-interactive protocols.
In this talk, we will explain the main differences between MKHE and MPHE, providing some example applications for both cases. We will then focus on how a MPHE scheme is constructed from an existing single-key FHE scheme. We will conclude by explaining a new technique (called homomorphic indicator) to construct an MPHE scheme from TFHE.
About the speaker
Sergi Rovira is a fourth-year PhD candidate in cryptography at Universitat Pompeu Fabra (UPF) under the supervision of Vanesa Daza (UPF) and Paz Morillo (UPC). Their research is focused on fully homomorphic encryption and lattice based post-quantum cryptography. Previously, they received a MSc in Advanced Mathematics and two BSc degrees, in Computer Science and in Mathematics from Universitat de Barcelona (UB).
Relevant paper
📄 https://fhe.org/conferences/conference-2023/media/Poster_Multiparty_TFHE.pdf
Resources from last meetup
You can access resources from the last meetup Hardware accelerator for FHEW on the FHE.org website here.
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See you soon!
The FHE.org team