2026

• Kjørven, Marte Eidsand; Gjøsteen, Kristian; Wærstad, Tone Linn. (2026) Safe and inclusive or unsafe and discriminatory? European digital identity wallets and the challenges of ‘sole control’. Computer Law & Security Review
  Vitenskapelig artikkel

2025

• Kjørven, Marte Eidsand; Riisnæs, Rolf; Mahler, Tobias; Gjøsteen, Kristian; Langford, Malcolm; Wærstad, Tone Linn; Omland, Lars Petter Halvorsen. (2025) Helhetlig, trygg og inkluderende digital identitetsforvaltning i Norge: Anbefalinger fra SODI-prosjektet. Universitetet i Oslo
  Policyrapport
• Nurnberger, Lea Sibylle; Costache, Anamaria; Gjøsteen, Kristian. (2025) Analysis and Optimisation of Fully Homomorphic Encryption. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Millerjord, Lise; Boyd, Colin Alexander; Gjøsteen, Kristian; Gligoroski, Danilo; Mjølsnes, Stig Frode. (2025) Key Exchange in a Post Quantum World. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling

2024

• Dragan, Constantin Catalin; Dupressoir, François; Gjøsteen, Kristian; Haines, Thomas; Rønne, Peter B.; Solberg, Morten Rotvold. (2024) Machine-Checked Proofs of Accountability: How to sElect Who is to Blame.
  Vitenskapelig kapittel

2023

• Fondevik, Elsie Margrethe Staff Mestl; Gjøsteen, Kristian. (2023) Modeling Noise-Accepting Key Exchange. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Boyd, Colin Alexander; Fondevik, Elsie Margrethe Staff Mestl; Gjøsteen, Kristian; Millerjord, Lise. (2023) Hybrid Group Key Exchange with Application to Constrained Networks. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• 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
  Vitenskapelig artikkel
• Raikwar, Mayank; Wu, Shuang; Gjøsteen, Kristian. (2023) Security Model for Privacy-Preserving Blockchain-Based Cryptocurrency Systems.
  Vitenskapelig kapittel
• Gjøsteen, Kristian; Haines, Thomas; Solberg, Morten Rotvold. (2023) Coercion Mitigation for Voting Systems with Trackers: A Selene Case Study.
  Vitenskapelig kapittel
• Gellert, Kai; Gjøsteen, Kristian; Jacobsen, Håkon; Jager, Tibor. (2023) On Optimal Tightness for Key Exchange with Full Forward Secrecy via Key Confirmation. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2022

• Drăgan, Constantin Cătălin; Dupressoir, François; Estaji, Ehsan; Gjøsteen, Kristian; Haines, Thomas; Ryan, Peter Y. A.; Rønne, Peter B.; Solberg, Morten Rotvold. (2022) Machine-Checked Proofs of Privacy Against Malicious Boards for Selene & Co.
  Vitenskapelig kapittel
• Gjøsteen, Kristian. (2022) Practical Mathematical Cryptography. CRC Press
  Lærebok
• Gjøsteen, Kristian; Raikwar, Mayank; Wu, Shuang. (2022) PriBank: Confidential Blockchain Scaling Using Short Commit-and-Proof NIZK Argument.
  Vitenskapelig kapittel
• Gjøsteen, Kristian; Haines, Thomas Edmund; Müller, Johannes; Rønne, Peter B.; Silde, Tjerand. (2022) Verifiable Decryption in the Head. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2021

• Gjøsteen, Kristian; Haines, Thomas Edmund; Solberg, Morten Rotvold. (2021) Efficient Mixing of Arbitrary Ballots with Everlasting Privacy: How to Verifiably Mix the PPATC Scheme. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• 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)
  Vitenskapelig artikkel
• de Kock, Bor; Gjøsteen, Kristian; Veroni, Mattia. (2021) Practical Isogeny-Based Key-Exchange with Optimal Tightness. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2020

• Estaji, Ehsan; Haines, Thomas Edmund; Gjøsteen, Kristian; Rønne, Peter; Ryan, Peter Y. A.; Soroush, Najmeh. (2020) Revisiting Practical and Usable Coercion-Resistant Remote E-Voting. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Davies, Gareth Thomas; Galteland, Herman; Gjøsteen, Kristian; Jiang, Yao. (2020) Cloud-assisted Asynchronous Key Transport with Post-Quantum Security. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Boyd, Colin Alexander; Davies, Gareth Thomas; Gjøsteen, Kristian; Jiang, Yao. (2020) Fast and Secure Updatable Encryption. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Rønne, Peter B.; Atashpendar, Arash; Gjøsteen, Kristian; Ryan, Peter Y. A.. (2020) Short Paper: Coercion-Resistant Voting in Linear Time via Fully Homomorphic Encryption: Towards a Quantum-Safe Scheme. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2019

• Cohn-Gordon, Katriel; Cremers, Cas; Gjøsteen, Kristian; Jacobsen, Håkon; Jager, Tibor. (2019) Highly Efficient Key Exchange Protocols with Optimal Tightness. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Boyd, Colin Alexander; Gjøsteen, Kristian; Gritti, Clementine Jeanne Pierrette; Haines, Thomas Edmund. (2019) A Blind Coupon Mechanism Enabling Veto Voting over Unreliable Networks. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Cremers, Cas; Gjøsteen, Kristian; Jager, Tibor; Cohn-Gordon, Katriel. (2019) Highly Efficient Key Exchange Protocols with Optimal Tightness. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2018

• Boyd, Colin Alexander; Davies, Gareth Thomas; Gjøsteen, Kristian; Raddum, Håvard; Toorani, Mohsen. (2018) Security notions for cloud storage and deduplication. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Boyd, Colin Alexander; Davies, Gareth Thomas; Gjøsteen, Kristian; Jiang, Yao. (2018) Offline Assisted Group Key Exchange. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Gjøsteen, Kristian; Jager, Tibor. (2018) Practical and tightly-secure digital signatures and authenticated key exchange. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Strand, Martin; Gjøsteen, Kristian; Buan, Aslak Bakke. (2018) Fully homomorphic encryption with applications to electronic voting. Norges teknisk-naturvitenskapelige universitet
  Doktoravhandling
• Boyd, Colin Alexander; Davies, Gareth Thomas; Gjøsteen, Kristian; Raddum, Håvard; Toorani, Mohsen. (2018) Definitions for plaintext-existence hiding in cloud storage.
  Vitenskapelig kapittel

2017

• Armknecht, Frederik; Boyd, Colin Alexander; Davies, Gareth Thomas; Gjøsteen, Kristian; Toorani, Mohsen. (2017) Side channels in deduplication: trade-offs between leakage and efficiency.
  Vitenskapelig kapittel
• Galteland, Herman; Gjøsteen, Kristian. (2017) Malware, Encryption, and Rerandomization - Everything is Under Attack. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Gjøsteen, Kristian; Strand, Martin. (2017) A Roadmap to Fully Homomorphic Elections: Stronger Security, Better Verifiability.
  Vitenskapelig kapittel

2016

• Gjøsteen, Kristian; Lund, Anders Smedstuen. (2016) An experiment on the security of the Norwegian electronic voting protocol. Annales des télécommunications
  Vitenskapelig artikkel
• Boyd, Colin Alexander; Davies, Gareth T.; Gjøsteen, Kristian; Raddum, Håvard; Toorani, Mohsen. (2016) Using Cryptography to Control Your Data at a Distance. ERCIM News
  Vitenskapelig artikkel

2015

• Lysne, Olav; Beitland, Kristine; Gjøsteen, Kristian; Hagen, Janne; Jarbekk, Eva; Lunde, Einar; Manne, Fredrik; Nystrøm, Sofie. (2015) Digital sårbarhet – sikkert samfunn. Norwegian Ministry of Justice and Public Security
  Vitenskapelig monografi

2014

• Aspnes, James; Diamadi, Zoë; Yampolskiy, Aleksandr; Gjøsteen, Kristian; Peralta, René. (2014) Spreading Alerts Quietly and the Subgroup Escape Problem. Journal of Cryptology
  Vitenskapelig artikkel

2012

• Gjøsteen, Kristian; Thuen, Øystein Øvreås. (2012) Password-Based Signatures.
  Vitenskapelig kapittel

2011

• Gjøsteen, Kristian; Petrides, George; Steine, Asgeir Bertelsen. (2011) A Novel Framework for Protocol Analysis. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Thuen, Øystein Øvreås; Gjøsteen, Kristian. (2011) Bilinear Pairings in Cryptography. NTNU
  Doktoravhandling

2010

• Gjøsteen, Kristian; Steine, Asgeir; Petrides, George. (2010) Formal verification of reductions in cryptography.
  Vitenskapelig kapittel

2008

• Gjøsteen, Kristian. (2008) A Latency-Free Election Scheme. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Andova, Suzana; Cremers, Cas; Gjøsteen, Kristian; Mauw, Sjouke; Mjølsnes, Stig Frode; Radomirovic, Sasa. (2008) A framework for compositional verification of security protocols. Information and Computation
  Vitenskapelig artikkel
• Gjøsteen, Kristian. (2008) Weaknesses in BankID, a Norwegian PKI substitute deployed by Norwegian banks. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Gjøsteen, Kristian; Kråkmo, Lillian. (2008) Round-Optimal Blind Signatures from Waters Signatures. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2007

• Gjøsteen, Kristian; Kråkmo, Lillian. (2007) Universally Composable Signcryption. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Brown, Daniel R. L.; Gjøsteen, Kristian. (2007) A Security Analysis of the NIST SP 800-90 Elliptic Curve Random Number Generator. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2006

• Gjøsteen, Kristian. (2006) A new security proof for Damgard's ElGamal. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel

2005

• Gjøsteen, Kristian. (2005) Homomorphic Cryptosystems Based on Subgroup Membership Problems. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Aspnes, James; Diamadi, Zoë; Gjøsteen, Kristian; Peralta, René; Yampolskiy, Aleksandr. (2005) Spreading Alerts Quietly and the Subgroup Escape Problem. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Gjøsteen, Kristian. (2005) Security Notions for Disk Encryption. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel
• Gjøsteen, Kristian. (2005) Symmetric Subgroup Membership Problems. Lecture Notes in Computer Science (LNCS)
  Vitenskapelig artikkel