Konstantinos Draziotis

Konstantinos Draziotis is an Associate Professor at the Department of Informatics, School of Informatics, Aristotle University of Thessaloniki. His academic career at the university began as a Lecturer from 2013 to 2019, and he has been serving as an Associate Professor since 2019.

His educational background includes a PhD in Mathematics from Aristotle University of Thessaloniki (2005) and a Bachelor's Degree in Mathematics from the same institution (1998).

Draziotis specializes in Computational Number Theory and Cryptography, with a particular focus on Diophantine equations, elliptic curves, and cryptanalysis of digital signature schemes. His research bridges theoretical mathematics with practical cryptographic applications, especially in analyzing the security of cryptographic protocols and developing mathematical methods for solving complex number-theoretic problems. He has developed a Greek-language textbook on Introduction to Cryptography with Creative Commons licensing, demonstrating his commitment to accessible education in this field.

His recent publications demonstrate a strong trend toward cryptanalysis of digital signature schemes (particularly DSA and ECDSA), lattice-based attacks, and number-theoretic approaches to cryptographic problems. His work spans both theoretical aspects of number theory (Diophantine equations, integer points on curves) and practical applications in cryptography (cryptosystem attacks, knapsack problems). The interdisciplinary nature of his research connects deep mathematical theory with real-world security applications, with publications consistently appearing in reputable journals like Information and Computation, Advances in Mathematics of Communications, and Theoretical Computer Science.

Draziotis leads a crypto research group at the Aristotle University of Thessaloniki and actively contributes to open-source cryptographic and mathematical software ecosystems. His academic service includes participation in departmental administrative functions as indicated by various announcements on examination schedules, graduation ceremonies, and departmental operations visible on his website. He maintains collaborations with researchers including Dimitrios Poulakis, Marios Adamoudis, and Anastasia Papadopoulou, among others, reflecting an active research network in both Greek and international academic communities.