About Us

Our research group's main activity encompasses several areas of cybersecurity and cryptography, including the theoretical foundations of cryptographic schemes, and the analysis and practical implementation of security and privacy mechanisms. We maintain fruitful collaborations with academic and industrial partners, including leading universities and a major company in the financial sector. In addition, we work closely with other research groups, especially the Quantum Computing and Communication Research Group. Our team has participated in several cybersecurity education and capacity-building initiatives, as well as in organizing cybersecurity challenges and conferences.

Research Interests

• Post-quantum Cryptography

• Secret Sharing

• Zero-Knowledge Proofs

• Cryptocurrencies

• Security and Privacy of Federated Learning

• Secure Protocol Design and Implementation

• Cyber Intelligence and Infrastructure Resilience

• AI supported Cybersecurity

• Security aspects of Fraud Prevention

• Security Analysis

Research Methodology

• Privacy-preserving algorithms, Anomaly/change detection

• AI security, Cybersecurity supported with AI

• Penetration testing, Cryptanalysis, Side-channel attacks

• Integrating standards into more complex protocols or software

• Security and privacy in software quality and testing

• Formal protocol verification tools

Research Staff

• Dr. Péter Burcsi, Senior Researcher
• Dr. Attila Kovács, Senior Researcher
• Dr. Péter Kutas, Senior Researcher
• Dr. Imre Lendák, Senior Researcher
• Dr. Péter Ligeti, Senior Researcher
• Dr. László Mérai, Senior Researcher
• plus 10+ senior researchers, 10+ PhD students, 50+ MSc/BSc students

Projects

The research group has been involved in 10+ National and 9 International educational and R&D projects, including COST actions, DIGITAL Europe Programme (European Digital Innovation Hub with Cybersecurity focus), EIT Digital Security, Privacy and Trust actions (Orchestration of financial services on demand, in cooperation with ATOS and GFT) and Erasmus+ capacity building projects (REWIRE: Cybersecurity Skills Alliance - A New Vision for Europe with 25 partners).

Key Publications

• B. Bencina, P. Kutas, S-P. Merz, C. Petit, M. Stopar, C. Weitkämper (2024): Improved algorithms for finding fixed-degree isogenies between supersingular elliptic curves, Advances in Cryptology [DOI]
• B. Borsos, A. Kovács, N. Tihanyi (2022): Tight upper and lower bounds for the reciprocal sum of Proth primes, The Ramanujan Journal [DOI]
• I. Lendák, B. Ingid, G. Palkó (2022): WARChain: Consensus-based trust in web archives via proof-of-stake blockchain technology, Journal of Computer Security [DOI]
• P. Ligeti, P. Sziklai, M. Takats (2021): Generalized threshold secret sharing and finite geometry, Designs, Codes and Cryptography [DOI]
• L. Mérai, I. Shparlinski (2024): Distribution of recursive matrix pseudorandom number generator modulo prime powers, Mathematics of Computation [pdf]
• I. A. Seres, M. Horváth, P. Burcsi (2023): The Legendre pseudorandom function as a multivariate quadratic cryptosystem: security and applications, AAECC [DOI]

Contact

Dr. Péter Burcsi – bupe@inf.elte.hu

Lab hompage: link