Lorenzo Rovida
Post-doctoral researcher
Politecnico di Torino
name.surname @ {polito, outlook}.it
Bio
Hi! My name is Lorenzo and I am currently a post-doctoral researcher in the CrypTo group of cryptography and number theory at Politecnico di Torino, in Italy.My primary research fields are fully homomorphic encryption (FHE) and lattice-based cryptography. I like to work on FHE from both an algorithmic point of view, like designing encrypted circuits (from sorting to machine learning) and a construction point of view, namely building FHE schemes using lattices.
Fig.1: Fully homomorphic encryption, explained in few cartoons, by Alice and Bob
(credits: Francesca V.)
Publications
(updated 25th July, 2025)
2025
- Beyond LWE: a Lattice Framework for Homomorphic Encryption
A. Leporati, L. Rovida and W. van Woerden
Preprint
(ePrint 2025/1171, pdf) - Lightweight Sorting in Approximate Homomorphic Encryption
L. Rovida, A. Leporati and S. Basile
Preprint
(ePrint 2025/1150, pdf, code, talk) - An Evolutionary Approach to the Design of Spiking Neural P Circuits
A. Leporati and L. Rovida
Journal of Membrane Computing
(doi, pdf, code) - Looking for Stability in Proof-of-Stake based Consensus Mechanisms
A. Leporati and L. Rovida
Blockchain: Research and Applications
(doi, pdf, code)
2024
- Transformer-based Language Models and Homomorphic Encryption: An Intersection with BERT-tiny
L. Rovida and A. Leporati,
10th ACM International Workshop on Security and Privacy Analytics
(doi, pdf, code) + (slides used at IWSPA '24 workshop at ACM CODASPY '24) - Encrypted Image Classification with Low Memory Footprint Using Fully Homomorphic Encryption
L. Rovida and A. Leporati
International Journal of Neural Systems
(ePrint 2024/460, doi, pdf, code) + (slides used at AICrypt '24 workshop at EUROCRYPT '24)
2023
- Fast but Approximate Homomorphic k-means Based on Masking Technique
L. Rovida
International Journal of Information Security
(doi, pdf) + (slides used at AICrypt '23 workshop at EUROCRYPT '24)
2020
- MaREA4Galaxy: Metabolic REaction Enrichment Analysis and Visualization of RNA-seq data within Galaxy
C. Damiani, L. Rovida, D. Maspero, I. Sala, L. Rosato, M. Di Filippo, D. Pescini, A. Graudenzi, M. Antoniotti, and G. Mauri
Computational and Structural Biotechnology Journal
(doi, pdf)
Some talks
(updated 23rd Sept, 2025)
2025
- Sept, 23rd @ Politecnico di Torino - (Tutorial) How to build a (fully) homomorphic encryption scheme using lattices, from scratch (slides)
- Sept, 12th @ University of Roma Tre (TAC25) - Exploring blind signatures under FHE by combining GBFV and HAWK (abstract, slides)
- Sept, 5th @ USI, Cryptography and Quantum Information group - (Tutorial) How to build a (fully) homomorphic encryption scheme using lattices, from scratch (slides)
- June, 17th @ COSIC, KU Leuven - Lightweight Sorting in Approximate Homomorphic Encryption (slides, video, paper)