Miquel Guiot Cusidó

Miquel Guiot Cusidó

PhD Student in Cryptography

About Me

Bones! I am Miquel Guiot Cusidó, a PhD student in Cryptography at the Computer Engineering and Mathematics Department of Universitat Rovira i Virgili, Tarragona (Catalonia), advised by Oriol Farràs.

I started my PhD in January 2024. Before that, I was a Research Engineer at Barcelona Supercomputing Center working in High-Performance Computing (HPC). I obtained a MSc in Advanced Mathematics at Universitat de Barcelona, Barcelona (Catalonia). Formerly, I completed a BSc in Mathematics and a BSc in Computer Science at the same university.

My work focuses on the study of secret sharing schemes, a cryptographic primitive. Furthermore, I am also interested in all areas of cryptography and its relation to complexity theory and HPC. Feel free to reach out if you are also interested!

Outside of research, I like reading novels and short stories, watching movies, road cycling, and football (especially Barça!), and I enjoy discussing them passionately.

Publications

  • Revisiting Beimel-Weinreb Weighted Threshold Secret Sharing Schemes
    Oriol Farràs, Miquel Guiot
    CSF 2026 — Paper

  • Traceable Secret Sharing Schemes for General Access Structures
    Oriol Farràs, Miquel Guiot
    Eurocrypt 2026 — Paper • Slides

  • Improving the Selection Rule of Correlation Attacks for Remote Power Analysis
    Oriol Farràs, Vincent Grosso, Miquel Guiot, Carlos Andrés Lara Niño
    CHES 2026 — Paper

  • Reducing the Share Size of Weighted Threshold Secret Sharing Schemes via Chow Parameters Approximation
    Oriol Farràs, Miquel Guiot
    TCC 2024 — Paper • Slides • Video

  • O(n) Key–Value Sort With Active Compute Memory
    Pouya Esmaili, Miquel Guiot, Petar Radojković, Xavier Martorell, Eduard Ayguadé, Jesus Labarta, Jason Adlard, Paolo Amato, Marco Sforzin
    Transactions on Computers — Paper

Preprints

  • Information-theoretic Strong Traceable Secret Sharing Schemes
    Oriol Farràs, Miquel Guiot
    Preprint — Paper

Talks

  • Traceable Secret Sharing Schemes for General Access Structures
  • Reducing the Share Size of Weighted Threshold Secret Sharing Schemes via Chow Parameters Approximation
    • Jornadas Critpografia Aplicada, Castro Urdiales, September 2025
    • CyberSec+ Doctoral Workshop, Lleida, June 2025
    • Workshop on Secret Sharing Schemes, Tarragona, May 2025
    • Jovenes RSME, Bilbao, January 2025
    • TCC 2024, Milan, December 2024
    • UPC, Barcelona, November 2024
    • URV, Tarragona, November 2024
  • Divulgative Talks
    • Tecnologia Blockchain, més enllà de les criptomonedes. High Schools in Catalunya, 2024 — Slides (in Catalan)
    • Privadesa i Seguretat a Internet. High Schools in Catalunya, 2025 — Slides (in Catalan)

Teaching

  • BSc in Computer Science (URV, Tarragona)
    • Discrete Mathematics II. 2026
    • Discrete Mathematics II. 2025
    • Discrete Mathematics II. 2024
  • BSc in Computer Science (UB, Barcelona)
    • Operating Systems. 2023
    • Software Design. 2022

Service

  • Reviewer
    • 2026: Designs, Codes and Cryptography
  • Subreviewer
    • 2026: ASIACRYPT, TCC
    • 2025: ICDE, ESORICS
    • 2024: EUROCRYPT, CCS, ACISP