I finished my PhD at IME - USP in 2022.
My main focus is on (post-quantum) cryptography, but I am also interested in computer and network security in general.
Contact me using thalespaiva at larc dot usp dot br.
You can also see my publications at my Google Scholar page.
Publications
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Tailoring two-dimensional codes for structured lattice-based KEMs and applications to Kyber
Authors: Thales B. Paiva, Marcos A. Simplicio Jr, Syed Mahbub Hafiz, Bahattin Yildiz, and Eduardo L. Cominetti
Preprint 2024 -
KyberSlash: Exploiting secret-dependent division timings in Kyber implementations
Authors: Daniel J. Bernstein, Karthikeyan Bhargavan, Shivam Bhasin, Anupam Chattopadhyay, Tee Kiah Chia, Matthias J. Kannwischer, Franziskus Kiefer, Thales Paiva, Prasanna Ravi, and Goutam Tamvada
Preprint 2024 -
Et tu, Brute? SCA Assisted CCA using Valid Ciphertexts-A Case Study on HQC KEM
Authors: Thales Paiva, Prasanna Ravi, Dirmanto Jap, and Shivam Bhasin
Preprint 2024 -
Defeating Low-Cost Countermeasures against Side-Channel Attacks in Lattice-based Encryption: A Case Study on Crystals-Kyber
Authors: Prasanna Ravi, Thales Paiva, Dirmanto Jap, Jan-Pieter D’Anvers, and Shivam Bhasin
Venue: CHES 2024
PDF Source code -
Faster Constant-Time Decoder for MDPC Codes and Applications to BIKE KEM
Authors: Thales B. Paiva and Routo Terada
Venue: CHES 2022
PDF Source code -
BGP Anomalies Classification using Features based on AS Relationship Graphs
Authors: Thales B. Paiva, Yaissa Siqueira, Daniel Batista, Roberto Hirata Jr. and Routo Terada
Venue: Latincom 2021
PDF Slides Source code -
Cryptanalysis of the binary permuted kernel problem
Authors: Thales B. Paiva and Routo Terada
Venue: ACNS 2021
PDF Slides (short) Slides (long) Source code -
A timing attack on the HQC encryption scheme
Authors: Thales B. Paiva and Routo Terada
Venue: Selected Areas in Cryptography 2019
PDF Slides Source code -
Robust covert channels based on DRAM power consumption
Authors: Thales B. Paiva, Javier Navaridas and Routo Terada
Venue: Information Security Conference 2019
PDF Slides Source code -
Improving the efficiency of a reaction attack on the QC-MDPC McEliece
Authors: Thales B. Paiva and Routo Terada
Venue: IEICE TRANS. on Fundamentals 2018
PDF Source code -
Two algorithms to improve the reaction attack on the QC-MDPC McEliece
Authors: Thales B. Paiva and Routo Terada
Venue: SBSeg 2018 - CTD
PDF Source code
MSc
- Improving the efficiency of the reaction attack agasint QC-MDPC McEliece (in Portuguese)
Advisor: Prof. Routo Terada
Finalist in the dissertation competition promoted by the 2018 Brazilian Symposium on Information Security (SBSeg)
Dissertation Slides Source code