Sondre Rønjom

Sondre Rønjom is a Professor in the Department of Informatics at the University of Bergen, specializing in cryptography and cybersecurity. His research focuses on cryptanalysis of symmetric ciphers, including AES, stream ciphers, and post-quantum security protocols. He has contributed to advancements in algebraic attacks, invariant subspace techniques, and privacy-preserving technologies like ZK-SNARKs and blockchain security.

Education: Completed his doctoral dissertation in 2009 titled Cryptanalysis of ciphers over finite cyclic groups.

Research Interests: Explores vulnerabilities in cryptographic algorithms through methods such as differential cryptanalysis, algebraic attacks, and linear subspace analysis. His work bridges theoretical cryptography with practical applications in secure communication and data protection.

Publications: Over 15 peer-reviewed articles, including seminal works on AES distinguishers, preimage attacks on Grendel, and cryptanalysis of lightweight ciphers like Robin and Zorro. His research has been featured in top-tier journals like Lecture Notes in Computer Science and IEEE Transactions on Information Theory.

Grants & Collaborations: Engaged in collaborative projects with institutions worldwide, contributing to advancements in post-quantum cryptography and blockchain security protocols.