Kristian Gjøsteen
Background and activities
Kristian Gjøsteen is a professor at the Department of Mathematical Sciences. He has a MSc and a PhD from NTNU. He belongs to the Algebra Group.
Gjøsteen's research interests include cryptographic voting systems, key exchange protocols, cloud cryptography, formal methods applied to security proofs and privacy. Publication list.
Gjøsteen was a member of the Norwegian Government’s Committee of Digital Vulnerabilities in Society (Lysne-utvalget). He has worked on electronic voting for the Norwegian government (2009-13), as well as electronic identification in Norway.
Courses
- MA8206 - Advanced Cryptography
- MA6202 - Linear Algebra with Applications
- TMA4162 - Computational Algebra
- MA3201 - Rings and Modules
- MA1202 - Linear Algebra with Applications
- TMA4185 - Coding Theory
Scientific, academic and artistic work
A selection of recent journal publications, artistic productions, books, including book and report excerpts. See all publications in the database
Journal publications
- (2021) Lattice-Based Proof of Shuffle and Applications to Electronic Voting. Lecture Notes in Computer Science (LNCS). vol. 12704.
- (2021) Practical Isogeny-Based Key-Exchange with Optimal Tightness. Lecture Notes in Computer Science (LNCS). vol. 12804.
- (2021) Efficient Mixing of Arbitrary Ballots with Everlasting Privacy: How to Verifiably Mix the PPATC Scheme. Lecture Notes in Computer Science (LNCS). vol. 12556.
- (2020) Fast and Secure Updatable Encryption. Lecture Notes in Computer Science (LNCS). vol. 12170 LNCS.
- (2020) Cloud-assisted Asynchronous Key Transport with Post-Quantum Security. Lecture Notes in Computer Science (LNCS). vol. 12248 LNCS.
- (2020) Revisiting Practical and Usable Coercion-Resistant Remote E-Voting. Lecture Notes in Computer Science (LNCS). vol. 12455.
- (2020) Short Paper: Coercion-Resistant Voting in Linear Time via Fully Homomorphic Encryption: Towards a Quantum-Safe Scheme. Lecture Notes in Computer Science (LNCS). vol. 11599.
- (2019) A Blind Coupon Mechanism Enabling Veto Voting over Unreliable Networks. Lecture Notes in Computer Science (LNCS). vol. 11898.
- (2019) Highly Efficient Key Exchange Protocols with Optimal Tightness. Lecture Notes in Computer Science (LNCS). vol. 11694 LNCS.
- (2018) Offline Assisted Group Key Exchange. Lecture Notes in Computer Science (LNCS). vol. 11060 LNCS.
- (2018) Security notions for cloud storage and deduplication. Lecture Notes in Computer Science (LNCS). vol. 11192 LNCS.
- (2018) Practical and tightly-secure digital signatures and authenticated key exchange. Lecture Notes in Computer Science (LNCS). vol. 10992 LNCS.
- (2017) Malware, Encryption, and Rerandomization - Everything is Under Attack. Lecture Notes in Computer Science (LNCS). vol. 10311.
- (2016) Using Cryptography to Control Your Data at a Distance. ERCIM News. vol. 106.
- (2016) An experiment on the security of the Norwegian electronic voting protocol. Annales des télécommunications.
- (2014) Spreading Alerts Quietly and the Subgroup Escape Problem. Journal of Cryptology. vol. 28 (4).
- (2011) A Novel Framework for Protocol Analysis. Lecture Notes in Computer Science (LNCS). vol. 6980.
- (2008) A framework for compositional verification of security protocols. Information and Computation. vol. 206 (2-4).
- (2008) A Latency-Free Election Scheme. Lecture Notes in Computer Science (LNCS). vol. 4964.
- (2008) Weaknesses in BankID, a Norwegian PKI substitute deployed by Norwegian banks. Lecture Notes in Computer Science (LNCS). vol. 5057.