Christian Johansen
About
See my homepage https://christian.johansenresearch.info/
Do you want to be a Teaching Assistant (TA) this autumn semester in one of the courses IMT4123 or IIKG2001 ? Send me an e-mail!
I am head of the Systems Security group, which we just call S2G, and am part of the CCIS (Center for Cyber and Information Security), the Norwegian Cyber Range, and the S2G Playground.
See hjemeside https://christian.johansenresearch.info/
Do you want to be a Teaching Assistant (TA) this autumn semester in one of the courses IMT4123 or IIKG2001 ? Send me an e-mail!
I am head of the Systems Security group, which we just call S2G, and am part of the CCIS (Center for Cyber and Information Security), the Norwegian Cyber Range, and the S2G Playground.
I work in Security and Theoretical Computer Science focusing on developing and using formal methods and tools for ensuring reliability of complex systems, including properties regarding security, safety, and concurrency. Applications of such methods are numerous, e.g., verification of safety properties of software systems (like absence of certain bugs) or of cyber-physical systems like the Smart Grids, ensuring security of Internet of Things, or modelling the concurrency of modern multi-core or high-performance computing. Among methods or models that I have created I can list: the Timed Distributed pi-calculus, the ST-structures, the Dynamic Structural Operational Semantics, the Synchronous Kleene Algebra, or the Higher Dimensional Modal Logic. Together with my students I have worked on developing tools, e.g., together with Manish Shrestha we made the LightSC Security Classification Method for Smart Grids and IoT and the associated usable security tool with the same name; whereas together with Bjørnar Luteberget we made the SAT modulo Discrete Event Simulation method and tool applied to railway capacity verification. A nice and long collaboration with Tore Pedersen has taken me also into the realm of modelling of human behaviour, where some of my contributions are: proposing the Behavioural Computer Science agenda, where models of human behaviour are combined with CS models of system behaviour (execution); or the probabilistic modelling of humans in security ceremonies.
I have done research in different areas of computer science, including modelling of security protocols; (object-oriented) programming languages and their formal semantics; modelling languages and verification of distributed and networked systems; models and tools for parallel programming and concurrent systems; algebras and logics as used in computer science; timed process calculi for distributed and mobile communicating systems; (legal) electronic contracts and privacy agreements (ToS -- Terms of Services). My work, more than 60 international articles, has been published in highly ranked conferences s.a. CONCUR, ATVA, LFCS, FM, POST, or CCS, and top journals s.a. JLAMP, IJCIP, FMSD, or LMCS. More recent works usually target concurrency, security, and privacy. I finished my doctoral studies in 2010 at University of Oslo and have been involved ever since in teaching and supervision, in reviewing for international conferences and journals, in the organisation of conferences and workshops, and in the coordination and writing of projects submitted to highly competitive calls, s.a.: EU-FP7-FET-Young-Explorers, Horison-2020, NFR-FRINATEK, UK’s EPSRC, ECSEL-JU.
Research
I have done research in different areas of computer science, including modelling of security protocols; (object-oriented) programming languages and their formal semantics; modelling languages and verification of networked systems; models and tools for parallel programming and concurrent systems; algebras and logics as used in computer science; timed process calculi for distributed and mobile communicating systems; (legal) electronic contracts and privacy agreements (ToS -- Terms of Services). My work, more than 45 international articles, has been published in highly ranked conferences s.a. CONCUR, ATVA, LFCS, FM, POST, or CCS, and top journals s.a. JLAMP, IJCIP, FMSD, or LMCS. More recent works usually target concurrency, security, and privacy. I finished my doctoral studies in 2010 at University of Oslo and have been involved ever since in teaching and supervision, in reviewing for international conferences and journals, in the organisation of conferences and workshops, and in the coordination and writing of projects submitted to highly competitive calls, s.a.: EU-FP7-FET-Young-Explorers, Horison-2020, NFR-FRINATEK, UK’s EPSRC, ECSEL-JU.
Publications
2023
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2023)
Catoids and modal convolution algebras.
Algebra Universalis
Academic article
-
Szalkowski, Gabriel Andy;
Johansen, Christian.
(2023)
Defining and measuring the effects of digital technologies on social sustainability: A systematic literature review.
Sustainable Development
Academic literature review
-
Arshad, Hamed;
Picazo Sanchez, Pablo;
Johansen, Christian;
Schneider, Gerardo.
(2023)
Attribute-based encryption with enforceable obligations.
Journal of Cryptographic Engineering (JCEN)
Academic article
2022
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2022)
Domain Semirings United.
Acta Cybernetica
Academic article
-
Aubert, Clement;
Horne, Ross;
Johansen, Christian.
(2022)
Diamonds for Security: A Non-Interleaving Operational Semantics for the Applied Pi-Calculus.
Leibniz International Proceedings in Informatics
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2022)
A Kleene Theorem for Higher-Dimensional Automata.
Leibniz International Proceedings in Informatics
Academic article
-
Aubert, Clement;
Horne, Ross;
Johansen, Christian.
(2022)
Bisimulations Respecting Duration and Causality for the Non-interleaving Applied Pi-Calculus.
Electronic Proceedings in Theoretical Computer Science (EPTCS)
Academic article
-
Arshad, Hamed;
Johansen, Christian;
Owe, Olaf;
Picazo-Sanchez, Pablo ;
Schneider, Gerardo.
(2022)
Semantic Attribute-Based Encryption: A framework for combining ABE schemes with semantic technologies.
Information Sciences
Academic article
-
Arshad, Hamed;
Johansen, Christian;
Owe, Olaf.
(2022)
Semantic Attribute-Based Access Control: A review on current status and future perspectives.
Journal of systems architecture
Academic literature review
-
Arshad, Hamed;
Horne, Ross;
Johansen, Christian;
Owe, Olaf;
Willemse, Tim A. C..
(2022)
Process Algebra Can Save Lives: Static Analysis of XACML Access Control Policies Using mCRL2.
Springer
Academic chapter/article/Conference paper
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2022)
Posets with interfaces as a model for concurrency.
Information and Computation
Academic article
-
Johansen, Johanna;
Pedersen, Tore;
Fischer-Hübner, Simone;
Johansen, Christian;
Schneider, Gerardo;
Roosendaal, Arnold.
(2022)
A multidisciplinary definition of privacy labels.
Information and Computer Security
Academic article
2021
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian.
(2021)
Drawing with SAT: four methods and A tool for producing railway infrastructure schematics.
Formal Aspects of Computing
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Trotter, Christopher A.;
Ziemiański, Krzysztof.
(2021)
Sculptures in concurrency.
Logical Methods in Computer Science
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2021)
Languages of higher-dimensional automata.
Mathematical Structures in Computer Science
Academic article
-
Johansen, Johanna;
Pedersen, Tore;
Johansen, Christian.
(2021)
Studying human-to-computer bias transference.
AI & Society: The Journal of Human-Centred Systems and Machine Intelligence
Academic article
-
Johansen, Johanna;
Noll, Josef;
Johansen, Christian.
(2021)
InfoInternet for education in the Global South: A study of applications enabled by free information-only internet access in technologically disadvantaged areas.
African Journal of Science, Technology, Innovation and Development (AJSTID)
Academic article
-
Johansen, Christian;
Aulon, Mujaj;
Arshad, Hamed;
Noll, Josef.
(2021)
The Snowden Phone: A Comparative Survey of Secure Instant Messaging Mobile Applications
.
Security and Communication Networks
Academic literature review
-
Luteberget, Bjørnar Steinnes;
Claessen, Koen;
Johansen, Christian;
Steffen, Martin.
(2021)
SAT modulo discrete event simulation applied to railway design capacity analysis.
Formal methods in system design
Academic article
-
Calk, Cameron;
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2021)
lr-Multisemigroups, Modal Quantales and the Origin of Locality.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Ramezanifarkhani, Toktam;
Fazeldehkordi, Elahe;
Owe, Olaf;
Noll, Josef;
Johansen, Christian.
(2021)
Security and Privacy Solutions in IoT and Distributed Systems Design.
Faculty of Mathematics and Natural Sciences, UiO
Doctoral dissertation
2020
-
Tokas, Shukun;
Owe, Olaf;
Johansen, Christian.
(2020)
Code Diversification Mechanisms for Internet of Things (Revised Version 2).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Moghadam, Maunya D.;
Johansen, Johanna;
Noll, Josef.
(2020)
Tool Support for Security Classification for Internet of Things (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef.
(2020)
Building Confidence using Beliefs and Arguments in Security Class Evaluations for IoT (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Thapa, Ratan Bahadur.
(2020)
Generating Posets Beyond N.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef;
Roverso, Davide.
(2020)
A Methodology for Security Classification applied to Smart Grid Infrastructures.
International Journal of Critical Infrastructure Protection
Academic article
2019
-
Johansen, Christian;
Owe, Olaf.
(2019)
Dynamic Structural Operational Semantics.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Luteberget, Bjørnar Steinnes;
Claessen, Koen;
Johansen, Christian.
(2019)
Automated Drawing of Railway Schematics Using Numerical Optimization in SAT.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Luteberget, Bjørnar;
Johansen, Christian;
Steffen, Martin.
(2019)
Synthesis of railway signaling layout from local capacity specifications.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Hildebrandt, Thomas;
Johansen, Christian;
Norman, Håkon.
(2019)
A stable non-interleaving early operational semantics for the pi-calculus.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef.
(2019)
Criteria for Security Classification of Smart Home Energy Management Systems (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Pedersen, Tore;
Johansen, Christian.
(2019)
Behavioural artificial intelligence: an agenda for systematic empirical studies of artificial inference.
AI & Society: The Journal of Human-Centred Systems and Machine Intelligence
Academic article
-
Johansen, Christian;
Owe, Olaf.
(2019)
Summary of: Dynamic Structural Operational Semantics.
Lecture Notes in Computer Science (LNCS)
Academic article
2018
-
Noll, Josef;
Garitano, Iñaki;
Johansen, Christian;
Del Ser, Javier;
Arenaza-Nuno, Ignacio.
(2018)
Perspectives in Secure SMART Environments.
CRC Press
Academic chapter/article/Conference paper
-
Pedersen, Tore;
Johansen, Christian;
Jøsang, Audun.
(2018)
Behavioural Computer Science: an agenda for combining modelling of human and system behaviours.
Human-centric Computing and Information Sciences
Academic article
2017
-
Tokas, Shukun;
Owe, Olaf;
Johansen, Christian.
(2017)
Code Diversification Mechanisms for Securing the Internet of Things.
Academic chapter/article/Conference paper
-
Luteberget, Bjørnar Steinnes;
Camilleri, John J.;
Johansen, Christian;
Schneider, Gerardo.
(2017)
Participatory verification of railway infrastructure by representing regulations in RailCNL.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian.
(2017)
Efficient verification of railway infrastructure designs against standard regulations.
Formal methods in system design
Academic article
-
Bursuc, Sergiu;
Johansen, Christian;
Xu, Shiwei.
(2017)
Automated verification of dynamic root of trust protocols.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Hildebrandt, Thomas;
Johansen, Christian;
Normann, Håkon.
(2017)
A stable non-interleaving early operational semantics for the Pi-calculus.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Johansen, Christian;
Mujaj, Aulon;
Arshad, Hamed;
Noll, Josef.
(2017)
Comparing Implementations of Secure Messaging Protocols (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Luteberget, Bjørnar Steinnes;
Camilleri, John J.;
Johansen, Christian;
Schneider, Gerardo.
(2017)
Participatory Verification of Railway Infrastructure Regulations using RailCNL (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef.
(2017)
Security Classification for Smart Grid Infra structures (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
2016
-
Normann, Håkon;
Johansen, Christian;
Hildebrandt, Thomas.
(2016)
Declarative event based models of concurrency and refinement in psi-calculi.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Johansen, Christian.
(2016)
ST-structures.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Migdal, Denis;
Johansen, Christian;
Jøsang, Audun.
(2016)
DEMO: OffPAD - Offline Personal Authenticating Device with Applications in Hospitals and e-Banking.
Association for Computing Machinery (ACM)
Chapter
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian;
Steffen, Martin.
(2016)
Rule-Based Consistency Checking of Railway Infrastructure Designs.
Universitetet i Oslo
Conference proceedings (Universitetet i Oslo. Institutt for informatikk) (450)
Report
-
Johansen, Christian;
Norman, Håkon;
Hildebrandt, Thomas.
(2016)
Non-interleaving Operational Semantics for the Pi-calculus -- technicalities.
Universitetet i Oslo
Universitetet i Oslo
Report
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian;
Feyling, C;
Steffen, Martin.
(2016)
Rule-based incremental verification tools applied to railway designs and regulations.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Johansen, Christian;
Pedersen, Tore;
Jøsang, Audun.
(2016)
Towards Behavioural Computer Science.
IFIP Advances in Information and Communication Technology
Academic article
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian;
Steffen, Martin.
(2016)
Rule-based consistency checking of railway infrastructure designs.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Johansen, Christian;
Pedersen, Tore;
Jøsang, Audun.
(2016)
Reflections on Behavioural Computer Science.
Universitetet i Oslo
Universitetet i Oslo
Report
-
Johansen, Christian;
Jøsang, Audun;
Migdal, Denis.
(2016)
Usable Authentication with an Offline Trusted Device Proxy Architecture (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Johansen, Christian;
Jøsang, Audun;
Migdal, Denis.
(2016)
Offpad: Offline personal authenticating device: implementations and applications.
Universitetet i Oslo
Universitetet i Oslo
Report
2015
-
Johansen, Christian;
Jøsang, Audun.
(2015)
Probabilistic Modeling of Humans in Security Ceremonies.
Springer Publishing Company
Academic chapter/article/Conference paper
-
Taherkordi, Amirhosein;
Johansen, Christian;
Eliassen, Frank;
Römer, Kay.
(2015)
Tokenit: Designing State-Driven Embedded Systems through Tokenized Transitions.
IEEE (Institute of Electrical and Electronics Engineers)
Academic chapter/article/Conference paper
-
Johansen, Christian;
Jøsang, Audun.
(2015)
Probabilistic modelling of humans in security ceremonies.
Lecture Notes in Computer Science (LNCS)
Academic article
2014
-
Johansen, Christian.
(2014)
Actor network procedures as Psi-calculi for security ceremonies.
Electronic Proceedings in Theoretical Computer Science (EPTCS)
Academic article
-
Normann, Håkon;
Johansen, Christian;
Hildebrandt, Thomas.
(2014)
Concurrency models with causality and events as psi-calculi.
Electronic Proceedings in Theoretical Computer Science (EPTCS)
Academic article
Journal publications
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2023)
Catoids and modal convolution algebras.
Algebra Universalis
Academic article
-
Szalkowski, Gabriel Andy;
Johansen, Christian.
(2023)
Defining and measuring the effects of digital technologies on social sustainability: A systematic literature review.
Sustainable Development
Academic literature review
-
Arshad, Hamed;
Picazo Sanchez, Pablo;
Johansen, Christian;
Schneider, Gerardo.
(2023)
Attribute-based encryption with enforceable obligations.
Journal of Cryptographic Engineering (JCEN)
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2022)
Domain Semirings United.
Acta Cybernetica
Academic article
-
Aubert, Clement;
Horne, Ross;
Johansen, Christian.
(2022)
Diamonds for Security: A Non-Interleaving Operational Semantics for the Applied Pi-Calculus.
Leibniz International Proceedings in Informatics
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2022)
A Kleene Theorem for Higher-Dimensional Automata.
Leibniz International Proceedings in Informatics
Academic article
-
Aubert, Clement;
Horne, Ross;
Johansen, Christian.
(2022)
Bisimulations Respecting Duration and Causality for the Non-interleaving Applied Pi-Calculus.
Electronic Proceedings in Theoretical Computer Science (EPTCS)
Academic article
-
Arshad, Hamed;
Johansen, Christian;
Owe, Olaf;
Picazo-Sanchez, Pablo ;
Schneider, Gerardo.
(2022)
Semantic Attribute-Based Encryption: A framework for combining ABE schemes with semantic technologies.
Information Sciences
Academic article
-
Arshad, Hamed;
Johansen, Christian;
Owe, Olaf.
(2022)
Semantic Attribute-Based Access Control: A review on current status and future perspectives.
Journal of systems architecture
Academic literature review
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2022)
Posets with interfaces as a model for concurrency.
Information and Computation
Academic article
-
Johansen, Johanna;
Pedersen, Tore;
Fischer-Hübner, Simone;
Johansen, Christian;
Schneider, Gerardo;
Roosendaal, Arnold.
(2022)
A multidisciplinary definition of privacy labels.
Information and Computer Security
Academic article
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian.
(2021)
Drawing with SAT: four methods and A tool for producing railway infrastructure schematics.
Formal Aspects of Computing
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Trotter, Christopher A.;
Ziemiański, Krzysztof.
(2021)
Sculptures in concurrency.
Logical Methods in Computer Science
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2021)
Languages of higher-dimensional automata.
Mathematical Structures in Computer Science
Academic article
-
Johansen, Johanna;
Pedersen, Tore;
Johansen, Christian.
(2021)
Studying human-to-computer bias transference.
AI & Society: The Journal of Human-Centred Systems and Machine Intelligence
Academic article
-
Johansen, Johanna;
Noll, Josef;
Johansen, Christian.
(2021)
InfoInternet for education in the Global South: A study of applications enabled by free information-only internet access in technologically disadvantaged areas.
African Journal of Science, Technology, Innovation and Development (AJSTID)
Academic article
-
Johansen, Christian;
Aulon, Mujaj;
Arshad, Hamed;
Noll, Josef.
(2021)
The Snowden Phone: A Comparative Survey of Secure Instant Messaging Mobile Applications
.
Security and Communication Networks
Academic literature review
-
Luteberget, Bjørnar Steinnes;
Claessen, Koen;
Johansen, Christian;
Steffen, Martin.
(2021)
SAT modulo discrete event simulation applied to railway design capacity analysis.
Formal methods in system design
Academic article
-
Calk, Cameron;
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Ziemiański, Krzysztof.
(2021)
lr-Multisemigroups, Modal Quantales and the Origin of Locality.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Fahrenberg, Uli;
Johansen, Christian;
Struth, Georg;
Thapa, Ratan Bahadur.
(2020)
Generating Posets Beyond N.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef;
Roverso, Davide.
(2020)
A Methodology for Security Classification applied to Smart Grid Infrastructures.
International Journal of Critical Infrastructure Protection
Academic article
-
Johansen, Christian;
Owe, Olaf.
(2019)
Dynamic Structural Operational Semantics.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Luteberget, Bjørnar Steinnes;
Claessen, Koen;
Johansen, Christian.
(2019)
Automated Drawing of Railway Schematics Using Numerical Optimization in SAT.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Luteberget, Bjørnar;
Johansen, Christian;
Steffen, Martin.
(2019)
Synthesis of railway signaling layout from local capacity specifications.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Hildebrandt, Thomas;
Johansen, Christian;
Norman, Håkon.
(2019)
A stable non-interleaving early operational semantics for the pi-calculus.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Pedersen, Tore;
Johansen, Christian.
(2019)
Behavioural artificial intelligence: an agenda for systematic empirical studies of artificial inference.
AI & Society: The Journal of Human-Centred Systems and Machine Intelligence
Academic article
-
Johansen, Christian;
Owe, Olaf.
(2019)
Summary of: Dynamic Structural Operational Semantics.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Pedersen, Tore;
Johansen, Christian;
Jøsang, Audun.
(2018)
Behavioural Computer Science: an agenda for combining modelling of human and system behaviours.
Human-centric Computing and Information Sciences
Academic article
-
Luteberget, Bjørnar Steinnes;
Camilleri, John J.;
Johansen, Christian;
Schneider, Gerardo.
(2017)
Participatory verification of railway infrastructure by representing regulations in RailCNL.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian.
(2017)
Efficient verification of railway infrastructure designs against standard regulations.
Formal methods in system design
Academic article
-
Bursuc, Sergiu;
Johansen, Christian;
Xu, Shiwei.
(2017)
Automated verification of dynamic root of trust protocols.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Hildebrandt, Thomas;
Johansen, Christian;
Normann, Håkon.
(2017)
A stable non-interleaving early operational semantics for the Pi-calculus.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Normann, Håkon;
Johansen, Christian;
Hildebrandt, Thomas.
(2016)
Declarative event based models of concurrency and refinement in psi-calculi.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Johansen, Christian.
(2016)
ST-structures.
Journal of Logical and Algebraic Methods in Programming
Academic article
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian;
Feyling, C;
Steffen, Martin.
(2016)
Rule-based incremental verification tools applied to railway designs and regulations.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Johansen, Christian;
Pedersen, Tore;
Jøsang, Audun.
(2016)
Towards Behavioural Computer Science.
IFIP Advances in Information and Communication Technology
Academic article
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian;
Steffen, Martin.
(2016)
Rule-based consistency checking of railway infrastructure designs.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Johansen, Christian;
Jøsang, Audun.
(2015)
Probabilistic modelling of humans in security ceremonies.
Lecture Notes in Computer Science (LNCS)
Academic article
-
Johansen, Christian.
(2014)
Actor network procedures as Psi-calculi for security ceremonies.
Electronic Proceedings in Theoretical Computer Science (EPTCS)
Academic article
-
Normann, Håkon;
Johansen, Christian;
Hildebrandt, Thomas.
(2014)
Concurrency models with causality and events as psi-calculi.
Electronic Proceedings in Theoretical Computer Science (EPTCS)
Academic article
Part of book/report
-
Arshad, Hamed;
Horne, Ross;
Johansen, Christian;
Owe, Olaf;
Willemse, Tim A. C..
(2022)
Process Algebra Can Save Lives: Static Analysis of XACML Access Control Policies Using mCRL2.
Springer
Academic chapter/article/Conference paper
-
Noll, Josef;
Garitano, Iñaki;
Johansen, Christian;
Del Ser, Javier;
Arenaza-Nuno, Ignacio.
(2018)
Perspectives in Secure SMART Environments.
CRC Press
Academic chapter/article/Conference paper
-
Tokas, Shukun;
Owe, Olaf;
Johansen, Christian.
(2017)
Code Diversification Mechanisms for Securing the Internet of Things.
Academic chapter/article/Conference paper
-
Migdal, Denis;
Johansen, Christian;
Jøsang, Audun.
(2016)
DEMO: OffPAD - Offline Personal Authenticating Device with Applications in Hospitals and e-Banking.
Association for Computing Machinery (ACM)
Chapter
-
Johansen, Christian;
Jøsang, Audun.
(2015)
Probabilistic Modeling of Humans in Security Ceremonies.
Springer Publishing Company
Academic chapter/article/Conference paper
-
Taherkordi, Amirhosein;
Johansen, Christian;
Eliassen, Frank;
Römer, Kay.
(2015)
Tokenit: Designing State-Driven Embedded Systems through Tokenized Transitions.
IEEE (Institute of Electrical and Electronics Engineers)
Academic chapter/article/Conference paper
Report
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Ramezanifarkhani, Toktam;
Fazeldehkordi, Elahe;
Owe, Olaf;
Noll, Josef;
Johansen, Christian.
(2021)
Security and Privacy Solutions in IoT and Distributed Systems Design.
Faculty of Mathematics and Natural Sciences, UiO
Doctoral dissertation
-
Tokas, Shukun;
Owe, Olaf;
Johansen, Christian.
(2020)
Code Diversification Mechanisms for Internet of Things (Revised Version 2).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Moghadam, Maunya D.;
Johansen, Johanna;
Noll, Josef.
(2020)
Tool Support for Security Classification for Internet of Things (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef.
(2020)
Building Confidence using Beliefs and Arguments in Security Class Evaluations for IoT (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef.
(2019)
Criteria for Security Classification of Smart Home Energy Management Systems (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Johansen, Christian;
Mujaj, Aulon;
Arshad, Hamed;
Noll, Josef.
(2017)
Comparing Implementations of Secure Messaging Protocols (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Luteberget, Bjørnar Steinnes;
Camilleri, John J.;
Johansen, Christian;
Schneider, Gerardo.
(2017)
Participatory Verification of Railway Infrastructure Regulations using RailCNL (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Shrestha, Manish;
Johansen, Christian;
Noll, Josef.
(2017)
Security Classification for Smart Grid Infra structures (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Luteberget, Bjørnar Steinnes;
Johansen, Christian;
Steffen, Martin.
(2016)
Rule-Based Consistency Checking of Railway Infrastructure Designs.
Universitetet i Oslo
Conference proceedings (Universitetet i Oslo. Institutt for informatikk) (450)
Report
-
Johansen, Christian;
Norman, Håkon;
Hildebrandt, Thomas.
(2016)
Non-interleaving Operational Semantics for the Pi-calculus -- technicalities.
Universitetet i Oslo
Universitetet i Oslo
Report
-
Johansen, Christian;
Pedersen, Tore;
Jøsang, Audun.
(2016)
Reflections on Behavioural Computer Science.
Universitetet i Oslo
Universitetet i Oslo
Report
-
Johansen, Christian;
Jøsang, Audun;
Migdal, Denis.
(2016)
Usable Authentication with an Offline Trusted Device Proxy Architecture (long version).
Universitetet i Oslo
Universitetet i Oslo
Report
-
Johansen, Christian;
Jøsang, Audun;
Migdal, Denis.
(2016)
Offpad: Offline personal authenticating device: implementations and applications.
Universitetet i Oslo
Universitetet i Oslo
Report
Teaching
Courses
Supervision
For MSc thesis topics, contact me directly before the start of the second year.
Media
2018
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Academic lectureKarami, Farzane; Owe, Olaf; Schneider, Gerardo; Johansen, Christian. (2018) The Future Mechanism and Information Flow Security. The 30th Nordic Workshop on Programming Theory, Oslo 2018-10-24 - 2018-10-26
2017
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Academic lectureTokas, Shukun; Owe, Olaf; Johansen, Christian. (2017) Code Diversification Mechanisms for Securing the Internet of Things. Åbo University 29th Nordic Workshop on Programming Theory (NWPT'17) , Turku 2017-11-01 - 2017-11-03
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LecturePedersen, Tore; Johansen, Christian; Jøsang, Audun. (2017) Intelligence Analysis: Reflections on the Future Human - Machine Analytic Enterprise from a Behavioral Computer Science Perspective. University of Oslo, Department of Informatics AF Security Seminar Series , Oslo 2017-06-16 - 2017-06-16
2012
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Academic lecturePrisacariu, Cristian. (2012) The Glory of the Past and Geometrical Concurrency. The Alan Turing Centenary Conference (Turing-100) , Manchester 2012-06-18 -
2009
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Academic lectureOkika, Joseph; Owe, Olaf; Prisacariu, Cristian. (2009) Operational Semantics for BPEL Complex Features in Rewriting Logic. Technical University of Denamrk 21. Nordic Workshop on Programming Theory (NWPT'09) , Lyngby 2009-10-14 - 2009-10-16
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Academic lecturePrisacariu, Cristian. (2009) Synchronous Kleene Algebra vs. Concurrent Kleene Algebra. Joost-Pieter Katoen Young Researchers Workshop on Concurrency Theory (YRCONCUR09) , Bologna 2009-09-05 - 2009-09-05