Kristian Gjøsteen
About
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.
Competencies
Publications
2023
-
Solberg, Morten Rotvold;
Gjøsteen, Kristian.
(2023)
Automated theorem provers and their role in cryptography.
Website (informational material)
2022
-
Gjøsteen, Kristian.
(2022)
Practical Mathematical Cryptography.
CRC Press
CRC Press
Textbook
-
Gjøsteen, Kristian;
Raikwar, Mayank;
Wu, Shuang.
(2022)
PriBank: Confidential Blockchain Scaling Using Short Commit-and-Proof NIZK Argument.
Academic chapter/article/Conference paper
-
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
-
Drăgan, Constantin Cătălin;
Dupressoir, François;
Estaji, Ehsan;
Gjøsteen, Kristian;
Haines, Thomas;
Ryan, Peter Y. A..
(2022)
Machine-Checked Proofs of Privacy Against Malicious Boards for Selene & Co.
IEEE Press
Academic chapter/article/Conference paper
2021
-
de Kock, Bor;
Gjøsteen, Kristian;
Veroni, Mattia.
(2021)
Practical Isogeny-Based Key-Exchange with Optimal Tightness.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
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
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)
Academic article
-
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)
Academic article
-
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)
Academic article
-
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Jiang, Yao.
(2020)
Fast and Secure Updatable Encryption.
Lecture Notes in Computer Science (LNCS)
Academic article
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)
Academic article
-
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)
Academic article
2018
-
Gjøsteen, Kristian;
Jager, Tibor.
(2018)
Practical and tightly-secure digital signatures and authenticated key exchange.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Raddum, Håvard;
Toorani, Mohsen.
(2018)
Definitions for plaintext-existence hiding in cloud storage.
Association for Computing Machinery (ACM)
Academic chapter/article/Conference paper
-
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)
Academic article
-
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Jiang, Yao.
(2018)
Offline Assisted Group Key Exchange.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Strand, Martin;
Gjøsteen, Kristian;
Buan, Aslak Bakke.
(2018)
Fully homomorphic encryption with applications to electronic voting.
Doktoravhandlinger ved NTNU (33)
Doctoral dissertation
2017
-
Gjøsteen, Kristian;
Strand, Martin.
(2017)
A Roadmap to Fully Homomorphic Elections: Stronger Security, Better Verifiability.
Springer
Academic chapter/article/Conference paper
-
Armknecht, Frederik;
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Toorani, Mohsen.
(2017)
Side channels in deduplication: trade-offs between leakage and efficiency.
Association for Computing Machinery (ACM)
Academic chapter/article/Conference paper
-
Galteland, Herman;
Gjøsteen, Kristian.
(2017)
Malware, Encryption, and Rerandomization - Everything is Under Attack.
Lecture Notes in Computer Science (LNCS)
Academic article
2016
-
Boyd, Colin Alexander;
Davies, Gareth T.;
Gjøsteen, Kristian;
Raddum, Håvard;
Toorani, Mohsen.
(2016)
Using Cryptography to Control Your Data at a Distance
.
ERCIM News
Academic article
-
Gjøsteen, Kristian;
Lund, Anders Smedstuen.
(2016)
An experiment on the security of the Norwegian electronic voting protocol.
Annales des télécommunications
Academic article
2014
-
Aspnes, James;
Diamadi, Zoë;
Yampolskiy, Aleksandr;
Gjøsteen, Kristian;
Peralta, René.
(2014)
Spreading Alerts Quietly and the Subgroup Escape Problem.
Journal of Cryptology
Academic article
2012
-
Gjøsteen, Kristian;
Thuen, Øystein Øvreås.
(2012)
Password-Based Signatures.
Springer
Academic chapter/article/Conference paper
2011
-
Thuen, Øystein Øvreås;
Gjøsteen, Kristian.
(2011)
Bilinear Pairings in Cryptography.
Doktoravhandlinger ved NTNU (143)
Doctoral dissertation
-
Hole, Kjell Jørgen;
Gjøsteen, Kristian;
Tjøstheim, Thomas;
Nestås, Lars Hopland.
(2011)
Farene ved e-valg.
Dagbladet
Feature article
-
Gjøsteen, Kristian;
Petrides, George;
Steine, Asgeir Bertelsen.
(2011)
A Novel Framework for Protocol Analysis.
Lecture Notes in Computer Science (LNCS)
Academic article
2010
-
Gjøsteen, Kristian;
Steine, Asgeir;
Petrides, George.
(2010)
Formal verification of reductions in cryptography.
Tapir Akademisk Forlag
Academic chapter/article/Conference paper
2008
-
Gjøsteen, Kristian.
(2008)
Weaknesses in BankID, a Norwegian PKI substitute deployed by Norwegian banks.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian;
Kråkmo, Lillian.
(2008)
Round-Optimal Blind Signatures from Waters Signatures.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2008)
A Latency-Free Election Scheme.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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
Academic article
2007
-
Gjøsteen, Kristian;
Kråkmo, Lillian.
(2007)
Universally Composable Signcryption.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
Academic article
-
Gjøsteen, Kristian;
Hole, Kjell Jørgen.
(2007)
Nettbanken ikke trygg.
Aftenposten (morgenutg. : trykt utg.)
Feature article
2006
-
Gjøsteen, Kristian.
(2006)
A new security proof for Damgard's ElGamal.
Lecture Notes in Computer Science (LNCS)
Academic article
2005
-
Gjøsteen, Kristian.
(2005)
Security Notions for Disk Encryption.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2005)
Homomorphic Cryptosystems Based on Subgroup Membership Problems.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2005)
Symmetric Subgroup Membership Problems.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
Academic article
Journal publications
-
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
-
de Kock, Bor;
Gjøsteen, Kristian;
Veroni, Mattia.
(2021)
Practical Isogeny-Based Key-Exchange with Optimal Tightness.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
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
-
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)
Academic article
-
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)
Academic article
-
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)
Academic article
-
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Jiang, Yao.
(2020)
Fast and Secure Updatable Encryption.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
Academic article
-
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)
Academic article
-
Gjøsteen, Kristian;
Jager, Tibor.
(2018)
Practical and tightly-secure digital signatures and authenticated key exchange.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
Academic article
-
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Jiang, Yao.
(2018)
Offline Assisted Group Key Exchange.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Galteland, Herman;
Gjøsteen, Kristian.
(2017)
Malware, Encryption, and Rerandomization - Everything is Under Attack.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Boyd, Colin Alexander;
Davies, Gareth T.;
Gjøsteen, Kristian;
Raddum, Håvard;
Toorani, Mohsen.
(2016)
Using Cryptography to Control Your Data at a Distance
.
ERCIM News
Academic article
-
Gjøsteen, Kristian;
Lund, Anders Smedstuen.
(2016)
An experiment on the security of the Norwegian electronic voting protocol.
Annales des télécommunications
Academic article
-
Aspnes, James;
Diamadi, Zoë;
Yampolskiy, Aleksandr;
Gjøsteen, Kristian;
Peralta, René.
(2014)
Spreading Alerts Quietly and the Subgroup Escape Problem.
Journal of Cryptology
Academic article
-
Hole, Kjell Jørgen;
Gjøsteen, Kristian;
Tjøstheim, Thomas;
Nestås, Lars Hopland.
(2011)
Farene ved e-valg.
Dagbladet
Feature article
-
Gjøsteen, Kristian;
Petrides, George;
Steine, Asgeir Bertelsen.
(2011)
A Novel Framework for Protocol Analysis.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2008)
Weaknesses in BankID, a Norwegian PKI substitute deployed by Norwegian banks.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian;
Kråkmo, Lillian.
(2008)
Round-Optimal Blind Signatures from Waters Signatures.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2008)
A Latency-Free Election Scheme.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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
Academic article
-
Gjøsteen, Kristian;
Kråkmo, Lillian.
(2007)
Universally Composable Signcryption.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
Academic article
-
Gjøsteen, Kristian;
Hole, Kjell Jørgen.
(2007)
Nettbanken ikke trygg.
Aftenposten (morgenutg. : trykt utg.)
Feature article
-
Gjøsteen, Kristian.
(2006)
A new security proof for Damgard's ElGamal.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2005)
Security Notions for Disk Encryption.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2005)
Homomorphic Cryptosystems Based on Subgroup Membership Problems.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Gjøsteen, Kristian.
(2005)
Symmetric Subgroup Membership Problems.
Lecture Notes in Computer Science (LNCS)
Academic article
-
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)
Academic article
Books
-
Gjøsteen, Kristian.
(2022)
Practical Mathematical Cryptography.
CRC Press
CRC Press
Textbook
Part of book/report
-
Gjøsteen, Kristian;
Raikwar, Mayank;
Wu, Shuang.
(2022)
PriBank: Confidential Blockchain Scaling Using Short Commit-and-Proof NIZK Argument.
Academic chapter/article/Conference paper
-
Drăgan, Constantin Cătălin;
Dupressoir, François;
Estaji, Ehsan;
Gjøsteen, Kristian;
Haines, Thomas;
Ryan, Peter Y. A..
(2022)
Machine-Checked Proofs of Privacy Against Malicious Boards for Selene & Co.
IEEE Press
Academic chapter/article/Conference paper
-
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Raddum, Håvard;
Toorani, Mohsen.
(2018)
Definitions for plaintext-existence hiding in cloud storage.
Association for Computing Machinery (ACM)
Academic chapter/article/Conference paper
-
Gjøsteen, Kristian;
Strand, Martin.
(2017)
A Roadmap to Fully Homomorphic Elections: Stronger Security, Better Verifiability.
Springer
Academic chapter/article/Conference paper
-
Armknecht, Frederik;
Boyd, Colin Alexander;
Davies, Gareth Thomas;
Gjøsteen, Kristian;
Toorani, Mohsen.
(2017)
Side channels in deduplication: trade-offs between leakage and efficiency.
Association for Computing Machinery (ACM)
Academic chapter/article/Conference paper
-
Gjøsteen, Kristian;
Thuen, Øystein Øvreås.
(2012)
Password-Based Signatures.
Springer
Academic chapter/article/Conference paper
-
Gjøsteen, Kristian;
Steine, Asgeir;
Petrides, George.
(2010)
Formal verification of reductions in cryptography.
Tapir Akademisk Forlag
Academic chapter/article/Conference paper
Report
-
Strand, Martin;
Gjøsteen, Kristian;
Buan, Aslak Bakke.
(2018)
Fully homomorphic encryption with applications to electronic voting.
Doktoravhandlinger ved NTNU (33)
Doctoral dissertation
-
Thuen, Øystein Øvreås;
Gjøsteen, Kristian.
(2011)
Bilinear Pairings in Cryptography.
Doktoravhandlinger ved NTNU (143)
Doctoral dissertation
INFORMASJONSMATR
-
Solberg, Morten Rotvold;
Gjøsteen, Kristian.
(2023)
Automated theorem provers and their role in cryptography.
Website (informational material)
Teaching
Courses
Media
2022
-
InterviewGjøsteen, Kristian; Fuchs, Franz Georg; Engesvik, Sara. (2022) https://www.digi.no/artikler/kvantedatamaskiners-destruktive https://www.digi.no/artikler/kvantedatamaskiners-destruktive [Internet] 2022-08-05
2020
-
Academic lecturewu, shuang; Gjøsteen, Kristian; Boyd, Colin Alexander. (2020) A Blockchain Model in Tamarin and Formal Analysis of Hash Time Lock Contract. 2nd Workshop on Formal Methods for Blockchains 2020-07-20 - 2020-07-21
-
Academic lectureStrand, Martin; Gjøsteen, Kristian. (2020) Can there be efficient and natural FHE schemes?. CFAIL CFAIL 2020: Conference for failed attempts and insightful losses , Virtuelt 2020-08-15 - 2020-08-15
2017
-
Academic lectureBoyd, Colin Alexander; Armknecht, Frederik; Davies, Gareth Thomas; Gjøsteen, Kristian; Raddum, Håvard; Toorani, Mohsen. (2017) Secure Deduplication - Models and Optimization. CRISP – Center for Research in Security and Privacy Distinguished Lectures Series in Cybersecurity , Darmstadt 2017-11-16 -
-
LectureArmknecht, Frederik; Boyd, Colin Alexander; Davies, Gareth Thomas; Gjøsteen, Kristian; Toorani, Mohsen. (2017) Side channels in deduplication: trade-offs between leakage and efficiency. ACM ACM Asia Conference on Computer and Communications Security (ASIACCS'17) 2017-04-02 - 2017-04-06
2016
-
Academic lectureGalteland, Herman; Gjøsteen, Kristian. (2016) Malware, Encryption, and Rerandomization - Everything is Under Attack. Mycrypt 2016 2016-12-01 - 2016-12-02
2011
-
Academic lecturePetrides, George; Gjøsteen, Kristian; Steine, Asgeir Bertelsen. (2011) A Novel Framework for Protocol Analysis. Xidian University Provable Security , Xi'An 2011-10-16 - 2011-10-18
-
Academic lectureGjøsteen, Kristian; Thuen, Øystein Øvreås. (2011) Password-Based Signatures. EuroPKI 2011 , Leuven 2011-09-15 - 2011-09-16
2010
-
Academic lectureGjøsteen, Kristian; Steine, Asgeir; Petrides, George. (2010) Formal verification of reductions in cryptography. Gjøvik University College Norwegian Information Security Conference 2010 , Gjøvik 2010-11-23 - 2010-11-24
2008
-
Academic lectureGjøsteen, Kristian. (2008) Weaknesses in BankID, a Norwegian PKI substitute deployed by Norwegian banks. EuroPKI 2008 , Trondheim 2008-06-16 - 2008-06-17
-
Academic lectureGjøsteen, Kristian; Kråkmo, Lillian. (2008) Round-Optimal Blind Signatures from Waters Signatures. Provable Security 2008-10-30 - 2008-11-01
-
Academic lectureGjøsteen, Kristian. (2008) A Latency-Free Election Scheme. RSA Conference 208 , San Francisco 2008-04-07 - 2008-04-11
-
Popular scientific lectureGjøsteen, Kristian. (2008) The Gathering 2008 , Hamar 2008-03-19 - 2008-03-23
2007
-
Academic lectureBrown, Daniel R. L.; Gjøsteen, Kristian. (2007) A Security Analysis of the NIST SP 800-90 Elliptic Curve Random Number Generator. International association for cryptologic research CRYPTO 2007 , Santa Barbara, California 2007-08-19 - 2007-08-23
-
Popular scientific lectureGjøsteen, Kristian. (2007) Stiftelsen Ungdom og Forskning og Forbundet Unge Forskere Vitenskapskafe , Oslo 2007-01-25 - 2007-01-25
2006
-
Academic lectureAndova, Suzana; Gjøsteen, Kristian; Kråkmo, Lillian; Mjølsnes, Stig Frode; Radomirovic, Sasa. (2006) An example of proving UC-realization with formal methods. ACM The 2nd Workshop on Formal and Computational Cryptography FCC 2006 , Venice 2006-07-09 - 2006-07-09
2005
-
InterviewGjøsteen, Kristian; Årnes, André. (2005) NRK P1 NRK P1 [Radio] 2005-08-17
-
InterviewGjøsteen, Kristian; Årnes, André. (2005) Kriminelt kryptisk. Gemini Gemini [Newspaper] 2005-06-01
-
InterviewWillassen, Svein Yngvar; Gjøsteen, Kristian. (2005) Nettavisen Nettavisen [Internet] 2005-06-14
-
Academic lectureGjøsteen, Kristian. (2005) Symmetric Subgroup Membership Problems. International Association for Cryptologic Research 8th International Workshop on Practice and Theory in Public Key Cryptography , Les Diablerets 2005-01-23 - 2005-01-26
-
Academic lectureGjøsteen, Kristian. (2005) En PRF med en nyttig gruppestruktur. Norsk Sikkerhetsmyndighet Norsk Kryptoseminar 2005 , Kolsås 2005-11-07 - 2005-11-08
-
Academic lectureAspnes, James; Diamadi, Zoë; Gjøsteen, Kristian; Peralta, René; Yampolskiy, Aleksandr. (2005) Spreading Alerts Quietly and the Subgroup Escape Problem. International Association for Cryptographic Research AsiaCrypt 2005 , Chennai 2005-12-04 - 2005-12-08
-
Academic lectureGjøsteen, Kristian. (2005) Security Notions for Disk Encryption. ESORICS 2005 , Milano 2005-09-12 - 2005-09-14
-
Academic lectureGjøsteen, Kristian. (2005) Homomorphic cryptosystems based on subgroup membership problems. MyCrypt 2005 , Kuala Lumpur 2005-09-28 - 2005-09-30