Antonio Guimarães

Post-doctoral Researcher

IMDEA Software Institute

About me

I’m a Post-doctoral Researcher at IMDEA Software Institute, Madrid, Spain. My research interests include all practical aspects of Fully Homomorphic Encryption (FHE) and related technologies, both on the primitive level and its implementation in high-level protocols and applications.

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Interests

Applied Cryptography
Fully Homomorphic Encryption
Privacy-preserving technologies

Education

Ph.D. in Computer Science, 2019-2023

University of Campinas
Visiting Ph.D. student, 2022-2023

Aarhus University
MSc in Computer Science, 2017-2019

University of Campinas
Computer Engineering, 2012-2016

University of Campinas

Recent talks

Ignacio Cascudo, Anamaria Costache, Daniele Cozzo, Dario Fiore, Antonio Guimarães, Eduardo Soria-Vazquez

Mar 25, 2025 FHE.org 2025 conference - Sofia, Bulgaria

Verifiable Computation for Approximate Homomorphic Encryption Schemes

Diego F. Aranha, Anamaria Costache, Antonio Guimarães, Eduardo Soria-Vazquez

Dec 12, 2024 ASIACRYPT 2024 - Kolkata, India

HELIOPOLIS: Verifiable Computation over Homomorphically Encrypted Data from Interactive Oracle Proofs is Practical

Publications

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Antonio Guimarães, Hilder V.L. Pereira (2025). Fast amortized bootstrapping with small keys and polynomial noise overhead.

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Ignacio Cascudo, Anamaria Costache, Daniele Cozzo, Dario Fiore, Antonio Guimarães, Eduardo Soria-Vazquez (2025). Verifiable Computation for Approximate Homomorphic Encryption Schemes.

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Diego F. Aranha, Anamaria Costache, Antonio Guimarães, Eduardo Soria-Vazquez (2024). HELIOPOLIS: Verifiable Computation over Homomorphically Encrypted Data from Interactive Oracle Proofs is Practical. Advances in Cryptology – ASIACRYPT 2024.

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Antonio Guimarães, Edson Borin, Diego F. Aranha (2024). MOSFHET: Optimized Software for FHE over the Torus. Journal of Cryptographic Engineering - 2024.

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Diego F. Aranha, Antonio Guimarães, Clément Hoffmann, Pierrick Méaux (2024). Secure and efficient transciphering for FHE-based MPC. To appear at CHES 2025 (3).

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