Associate professor (agregat) at Universitat Rovira i Virgili. Computer Engineering and Mathematics Dept.
Coordinator of the PhD programme in Computer Science and Mathematics of Security.
email: oriol.farras [at] urv.cat
Address: Office 137, ETSE, Campus Sescelades, E-43007 Tarragona, Catalonia, Spain.
Research interests: secret sharing schemes, cryptography, information theory, matroid theory, and combinatorics.
Upcoming events:
EUROCRYPT. May 10-14, Rome.
Discrete Math Days. June 29-July 1, Granada.
CSF 2026. July 26-29, Lisbon.
CHES. October 11-15, Antalya.
Periodic seminars: Seminar on Algorithmic Aspects of Information Theory, LIMDA seminars, Barcelona Mathematics and Machine Learning Colloquium Series (b=M2L), Three talks in combinatorics,
News:
Revisiting Beimel-Weinreb Weighted Threshold Secret Sharing Schemes, a joint work with Miquel Guiot, accepted at CSF 2026. Full version at eprint.
Co-organizer of Doctoral Workshop in Computer Science and Mathematics. April 15, Tarragona.
Talk “Divide and Secure: An Introduction to Secret Sharing”. CryptoClub, April 9, U. Carlos III, Madrid.
Talk "Polynomial Secret Sharing Schemes and Algebraic Matroids" at 5 Talks in Combinatorics. March 18, Barcelona.
Information-Theoretic Strong Traceable Secret Sharing Schemes, a joint work with Miquel Guiot, at eprint.
"Quan les matemàtiques garanteixen ciberseguretat", Bojos per les Matemàtiques, February 28.
Attended Winter School on Cryptography and Machine Learning. It was great!
Traceable Secret Sharing Schemes for General Access Structures, a joint work with Miquel Guiot, accepted at Eurocrypt 2026. Full version at eprint.
Non-Complete Set Coverings for Higher Order Threshold Implementations, a joint work with Óscar Fidalgo and Carlos Andrés Lara-Niño, accepted at Designs, Codes and Cryptography. Also at eprint.
PQCUARK: A Scalar RISC-V ISA Extension for ML-KEM and ML-DSA. Xavier Carril, Alicia Manuel Pasoot, Emanuele Parisi, Carlos Andrés Lara-Niño, Oriol Farràs, and Miquel Moretó. Accepted at DATE 2026. Also at eprint.
Teaching:
(1st sem.) Cryptography and Information Security (MESIIA).
(2nd sem.) Cryptography and Blockchain Technology (MECMAT), Matemàtica Discreta II (GEI).
Current PhD students:
Óscar Fidalgo (2025-)
Miquel Guiot (2024-)
Adriana Moya (2023-)
Research groups and Projects: CRISES, Discrete and Algorithmic Mathematics Spanish network, Red RISC-V, CYBERCAT, DRAC.
Program Committee (latest): Workshop on Secret Sharing Schemes, EUROCRYPT 2025, CCS 2024, ACNS 2023, Encuentro Ibérico de Matemáticas 2022, Latincrypt 2021, TCC 2020, Itinerant Cryptography Seminars, RECSI, DCSM 2022-26.
Editorial Board: Designs, Codes and Cryptography (2026)