Tjerand Silde

Hi! I am an Associate Professor in Cryptology at the Department of Information Security and Communication Technology at the Norwegian University of Science and Technology (NTNU)
in Trondheim, where I am leading the NTNU Applied Cryptology Lab.

I am leading the Post-Quantum Cryptography work package in the OFFPAD project, the Cryptology and Social Life project, and the ToppForsk@IE:Cryptography research group.
I am coordinating the “Cryptographic Engineering” profile in the Cyber Security and Data Communication master of science in engineering program at NTNU.

I am also a Security and Cryptography Expert at the cybersecurity company Pone Biometrics.

My research focuses on lattice-based cryptography as a foundation for advanced digital signatures and zero-knowledge protocols. More broadly, I am interested in post-quantum cryptography, multiparty computation, homomorphic encryption, and secure implementations.

I am a member of the International Association for Cryptologic Research (IACR).

News:

• Together with over 800 scientists, I co-authored an open letter in September 2025 addressing the EU Presidency’s proposal on the Child Sexual Abuse / Chat Control Regulation. Follow-up letters were published in November 2025 and, most recently, in February 2026, raising concerns about new proposals on digital age verification.

• Together with Kristian Gjøsteen (NTNU), Jonathan Komada Eriksen (KU Leuven), Øyvind Ytrehus, and Morten Øygarden (UiB), I published an opinion piece in digi.no on PQC vs. QKD, arguing that post-quantum cryptography is the most promising path forward.

• The International Workshop on Foundations and Applications of Privacy-Enhancing Cryptography was organised as an affiliated event of IACR Eurocrypt 2026 in Rome on May 10. I co-organised the workshop with Lucjan Hanzlik and Daniel Slamanig.

• Our paper, More Efficient Lattice-Based Verifiable Decryption from LWR, was accepted to WAHC @ ACM CCS 2025 (joint work with Thomas Haines, Emil August Hovd Olaisen, and Peter Rønne).

• I gave a talk on “Cryptographic Side-Channels on Embedded Devices” at the NDC TechTown conference in Kongsberg on September 25, 2025.

• We recently opened the CRYPTO-LAB for theoretical and practical cryptographic research and education, currently used in TTM4205 Secure Cryptographic Implementations.

• I joined NTNU as Associate Professor in Cryptology on September 1, 2022.

I support the Electronic Frontier Foundation, the Tor Project and the Signal Foundation.