# Antonio Guimarães

> Antonio Guimarães is an applied cryptographer working on fully homomorphic encryption and its applications to privacy-preserving machine learning.

Every page of this site has a Markdown version (linked below). For each paper, the arXiv preprint (or the IACR ePrint one for papers not on arXiv) is kept up to date and is the preferred version; the published DOI is listed alongside. Full-text transcripts are provided where available; they are extracted automatically from the PDF, so formulas may be garbled. Cite the paper, not the transcript.

## Main pages

- [Home](https://antonioguimaraes.org/index.md): profile, research topics, recent news
- [Publications](https://antonioguimaraes.org/publications.md): all papers with abstracts and links
- [CV](https://antonioguimaraes.org/cv.md): positions, education, awards, program committees, NIST submissions
- [Software](https://antonioguimaraes.org/software.md): MOSFHET, `vfhe`, RISC-V ALE and paper code
- [Juan de la Cierva fellowship](https://antonioguimaraes.org/juan-de-la-cierva.md): the programme, the proposal and its results so far
- [Talks](https://antonioguimaraes.org/talks.md): recorded talks
- [News](https://antonioguimaraes.org/news.md): dated updates

## Publications

- [TUTTI: Parallel CKKS Bootstrapping in under 3 ms on CPU](https://antonioguimaraes.org/publications/tutti.md): arXiv:2611.12854, 2026. Robin Köstler, Antonio Guimarães. Full text: https://antonioguimaraes.org/publications/tutti/fulltext.md
- [Tulva: Practical Asynchronous Threshold FHE](https://antonioguimaraes.org/publications/tulva.md): IEEE S&P 2027, 2027. Valerio Cini, Antonio Guimarães, Russell W. F. Lai, Michał Osadnik, Ivy K. Y. Woo. Full text: https://antonioguimaraes.org/publications/tulva/fulltext.md
- [Batch, Pack, and Prove: More Efficient Verifiable Computation for CKKS](https://antonioguimaraes.org/publications/batch-pack-prove.md): ASIACRYPT 2026, 2026. Ignacio Cascudo, Anamaria Costache, Daniele Cozzo, Dario Fiore, Antonio Guimarães, Eduardo Soria-Vazquez. Full text: https://antonioguimaraes.org/publications/batch-pack-prove/fulltext.md
- [PETCHA: Post-quantum Efficient Transciphering with ChaCha](https://antonioguimaraes.org/publications/petcha.md): PQCrypto 2026, 2026. Antonio Guimarães, Gabriela M. Jacob, Hilder V. L. Pereira. Full text: https://antonioguimaraes.org/publications/petcha/fulltext.md
- [Nostalgia Cipher: Can Filtered LFSRs Be Secure Again? An Application to Hybrid Homomorphic Encryption with Sub-50 ms Latency](https://antonioguimaraes.org/publications/nostalgia-cipher.md): ToSC 2025, 2025. Nabil Chacal, Antonio Guimarães, Ange Martinelli, Pierrick Méaux, Romain Poussier. Full text: https://antonioguimaraes.org/publications/nostalgia-cipher/fulltext.md
- [Fast amortized bootstrapping with small keys and polynomial noise overhead](https://antonioguimaraes.org/publications/fast-amortized-bootstrapping.md): CCS 2025, 2025. Antonio Guimarães, Hilder V. L. Pereira. Full text: https://antonioguimaraes.org/publications/fast-amortized-bootstrapping/fulltext.md
- [Verifiable Computation for Approximate Homomorphic Encryption Schemes](https://antonioguimaraes.org/publications/verifiable-approximate-he.md): CRYPTO 2025, 2025. Ignacio Cascudo, Anamaria Costache, Daniele Cozzo, Dario Fiore, Antonio Guimarães, Eduardo Soria-Vazquez. Full text: https://antonioguimaraes.org/publications/verifiable-approximate-he/fulltext.md
- [Homomorphic WiSARDs: Efficient Weightless Neural Network training over encrypted data](https://antonioguimaraes.org/publications/homomorphic-wisards.md): ACNS 2025, 2025. Leonardo Neumann, Antonio Guimarães, Diego F. Aranha, Edson Borin. Full text: https://antonioguimaraes.org/publications/homomorphic-wisards/fulltext.md
- [RISC-V Assembly Learning Environment: An extensible web-based platform](https://antonioguimaraes.org/publications/riscv-ale.md): WCAE 2025, 2025. João Seródio, Antonio Guimarães, Edson Borin.
- [Secure and efficient transciphering for FHE-based MPC](https://antonioguimaraes.org/publications/transciphering-fhe-mpc.md): TCHES 2025, 2025. Diego F. Aranha, Antonio Guimarães, Clément Hoffmann, Pierrick Méaux. Full text: https://antonioguimaraes.org/publications/transciphering-fhe-mpc/fulltext.md
- [HELIOPOLIS: Verifiable Computation over Homomorphically Encrypted Data from Interactive Oracle Proofs is Practical](https://antonioguimaraes.org/publications/heliopolis.md): ASIACRYPT 2024, 2024. Diego F. Aranha, Anamaria Costache, Antonio Guimarães, Eduardo Soria-Vazquez. Full text: https://antonioguimaraes.org/publications/heliopolis/fulltext.md
- [MOSFHET: Optimized Software for FHE over the Torus](https://antonioguimaraes.org/publications/mosfhet.md): JCEN 2024, 2024. Antonio Guimarães, Edson Borin, Diego F. Aranha. Full text: https://antonioguimaraes.org/publications/mosfhet/fulltext.md
- [Amortized Bootstrapping Revisited: Simpler, Asymptotically-faster, Implemented](https://antonioguimaraes.org/publications/amortized-bootstrapping-revisited.md): ASIACRYPT 2023, 2023. Antonio Guimarães, Hilder V. L. Pereira, Barry van Leeuwen. Full text: https://antonioguimaraes.org/publications/amortized-bootstrapping-revisited/fulltext.md
- [Homomorphic evaluation of large look-up tables for inference on human genome data in the cloud](https://antonioguimaraes.org/publications/homomorphic-lut-genome.md): WCC 2022, 2022. Antonio Guimarães, Leonardo Neumann, Fernanda A. Andaló, Diego F. Aranha, Edson Borin.
- [Revisiting the functional bootstrap in TFHE](https://antonioguimaraes.org/publications/functional-bootstrap-tfhe.md): TCHES 2021, 2021. Antonio Guimarães, Edson Borin, Diego F. Aranha. Full text: https://antonioguimaraes.org/publications/functional-bootstrap-tfhe/fulltext.md
- [High-performance IO for seismic processing on the cloud](https://antonioguimaraes.org/publications/seismic-io-cloud.md): CCPE 2021, 2021. Antonio Guimarães, Luis Lacalle, Charles B. Rodamilans, Edson Borin.
- [Efficient and secure software implementations of Fantomas](https://antonioguimaraes.org/publications/fantomas.md): JCEN 2020, 2020. Rafael J. Cruz, Antonio Guimarães, Diego F. Aranha. Full text: https://antonioguimaraes.org/publications/fantomas/fulltext.md
- [Optimized implementation of QC-MDPC code-based cryptography](https://antonioguimaraes.org/publications/qc-mdpc-optimized.md): CCPE 2019, 2019. Antonio Guimarães, Diego F. Aranha, Edson Borin.
- [Introducing Arithmetic Failures to Accelerate QC-MDPC Code-Based Cryptography](https://antonioguimaraes.org/publications/qc-mdpc-arithmetic-failures.md): CBC 2019, 2019. Antonio Guimarães, Edson Borin, Diego F. Aranha.
- [Optimizing the Decoding Process of a Post-Quantum Cryptographic Algorithm](https://antonioguimaraes.org/publications/qc-mdpc-decoding.md): WSCAD 2017, 2017. Antonio Guimarães, Diego F. Aranha, Edson Borin.

## Optional

- [Whole site in one file](https://antonioguimaraes.org/llms-full.txt)
- [BibTeX of all papers](https://antonioguimaraes.org/publications.bib)
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