Tjerand Silde - NTNU

About

I am an Associate Professor in Cryptology at the Department of Information Security and Communication Technology, where I am the Research Group Leader of the NTNU Applied Cryptology Lab. I am also affiliated with the Department of Mathematical Sciences at NTNU and working as a Security and Cryptography Expert at the cybersecurity company Pone Biometrics.

I defended my PhD thesis on August 22nd, 2022, titled: Privacy-Preserving Cryptography from Zero-Knowledge Proofs. I started as an Associate Professor on September 1st, 2022. You can find more information at: tjerandsilde.no.

Research

My main foci of research are lattice-based cryptography and zero-knowledge protocols. My interests also span the areas of post-quantum cryptography, anonymous communication, multiparty computation, homomorphic encryption, electronic voting, and secure implementation.

NTNU Applied Cryptology Lab

“OffPAD” - Optimizing balance between high

Conducting research on lightweight and post-quantum secure authentication protocols.

Publications

2025

Silde, Tjerand; Sandsbråten, Caroline; Hough, Patrick. (2025) More Efficient Lattice-Based Electronic Voting from NTRU. IACR Communications in Cryptology (CiC)
Academic article

2024

Strand, Martin; Silde, Tjerand Aga. (2024) Bitcoindebatt: Tar fundamentalt feil i sitt forsvar av krypto. Morgenbladet
Reader opinion piece
Bauspieß, Pia; Silde, Tjerand Aga; Poljuha, Matej; Tullot, Alexandre; Costache, Anamaria; Rathgeb, Christian. (2024) BRAKE: Biometric Resilient Authenticated Key Exchange. IEEE Access
Academic article
Gur, Kamil Doruk; Katz, Jonathan; Silde, Tjerand Aga. (2024) Two-Round Threshold Lattice-Based Signatures from Threshold Homomorphic Encryption. Lecture Notes in Computer Science (LNCS)
Academic article

2023

Aranha, Diego F.; Baum, Carsten; Gjøsteen, Kristian; Silde, Tjerand Aga. (2023) Verifiable Mix-Nets and Distributed Decryption for Voting from Lattice-Based Assumptions. Proceedings of the ACM Conference on Computer and Communications Security
Academic article

2022

Silde, Tjerand. (2022) Verifiable Decryption for BGV. Lecture Notes in Computer Science (LNCS)
Academic article
Høgåsen, Audhild; Silde, Tjerand. (2022) Return Codes from Lattice Assumptions. Lecture Notes in Computer Science (LNCS)
Academic article
Silde, Tjerand; Strand, Martin. (2022) Anonymous Tokens with Public Metadata and Applications to Private Contact Tracing. Lecture Notes in Computer Science (LNCS)
Academic article
Gjøsteen, Kristian; Haines, Thomas Edmund; Müller, Johannes; Rønne, Peter B.; Silde, Tjerand. (2022) Verifiable Decryption in the Head. Lecture Notes in Computer Science (LNCS)
Academic article

2021

Aranha, Diego F.; Baum, Carsten; Gjøsteen, Kristian; Silde, Tjerand; Tunge, Thor. (2021) Lattice-Based Proof of Shuffle and Applications to Electronic Voting. Lecture Notes in Computer Science (LNCS)
Academic article

Journal publications

Silde, Tjerand; Sandsbråten, Caroline; Hough, Patrick. (2025) More Efficient Lattice-Based Electronic Voting from NTRU. IACR Communications in Cryptology (CiC)
Academic article
Strand, Martin; Silde, Tjerand Aga. (2024) Bitcoindebatt: Tar fundamentalt feil i sitt forsvar av krypto. Morgenbladet
Reader opinion piece
Bauspieß, Pia; Silde, Tjerand Aga; Poljuha, Matej; Tullot, Alexandre; Costache, Anamaria; Rathgeb, Christian. (2024) BRAKE: Biometric Resilient Authenticated Key Exchange. IEEE Access
Academic article
Gur, Kamil Doruk; Katz, Jonathan; Silde, Tjerand Aga. (2024) Two-Round Threshold Lattice-Based Signatures from Threshold Homomorphic Encryption. Lecture Notes in Computer Science (LNCS)
Academic article
Aranha, Diego F.; Baum, Carsten; Gjøsteen, Kristian; Silde, Tjerand Aga. (2023) Verifiable Mix-Nets and Distributed Decryption for Voting from Lattice-Based Assumptions. Proceedings of the ACM Conference on Computer and Communications Security
Academic article
Silde, Tjerand. (2022) Verifiable Decryption for BGV. Lecture Notes in Computer Science (LNCS)
Academic article
Høgåsen, Audhild; Silde, Tjerand. (2022) Return Codes from Lattice Assumptions. Lecture Notes in Computer Science (LNCS)
Academic article
Silde, Tjerand; Strand, Martin. (2022) Anonymous Tokens with Public Metadata and Applications to Private Contact Tracing. Lecture Notes in Computer Science (LNCS)
Academic article
Gjøsteen, Kristian; Haines, Thomas Edmund; Müller, Johannes; Rønne, Peter B.; Silde, Tjerand. (2022) Verifiable Decryption in the Head. Lecture Notes in Computer Science (LNCS)
Academic article
Aranha, Diego F.; Baum, Carsten; Gjøsteen, Kristian; Silde, Tjerand; Tunge, Thor. (2021) Lattice-Based Proof of Shuffle and Applications to Electronic Voting. Lecture Notes in Computer Science (LNCS)
Academic article

Teaching

Courses