Contents
Teaching
Research
Publications
Contact Information
IC00AJ64 Cyber Security I: Ethical Hacking
IC00AK18 Cryptographic Systems and Their Weaknesses
521244S Special Course in Information Technology 12 - Modern Cryptography
Algebraic methods in cryptography
I am interested in studying cryptographic methods in terms of universal algebra and category theory.
I wrote my dissertation on algebraic considerations in cryptography. Many infeasible problems, that are used as the basis of cryptographic
algorithms, are based on group theory. For example, the discrete logarithm problem underlying Diffie-Hellman type constructions
is based on cyclic groups. Algebraic considerations enable us to find the structure of these problems and formulate analogous problems
in non-group algebras. In my dissertation, for example, I show that the Diffie-Hellman problem can be formulated as a problem of computing images
under an unknown homomorphism. This realization enables us to move from groups to other algebraic structures and potentially construct more
efficient and quantum resistant algorithms.
Applied post-quantum cryptography
In addition to the mathematical considerations, my research involves the application of cryptographic primitives and quantum-resistant mathematical problems in
the construction of new provably secure cryptographic schemes and protocols based on both computational indistinguishability and information theory.
These constructions need be usable in practice in an agile way.
Privacy and confidentiality in biomedical systems and machine learning
I have been involved in several research project involving signal processing and machine learning using physiological signals.
Physiological measurements contain
private medical information and their confidentiality needs to be ensured in applications. I have designed security architectures for
remote health monitoring systems and studied lightweight cryptographic methods related to body area networks and developed methods
for user authentication using the electrocardiogram. I have also considered privacy issues related to these topics and applied
anonymization methods, differential privacy and zero-knowledge arguments.
Cryptography and information security
Kumar T.,
Partala J., Nguyen T., Agrawal L., Mondal A., Kumar A., Ahmad
I., Peltonen E., Pirttikangas S., Harjula E. (2025),
Secure Edge Intelligence in the
6G Era,
in: Mantas G., Saghezchi F., Rodriguez J., Sucasas V. (eds), Security and
Privacy for 6G Massive IoT, John Wiley & Sons (to appear)
Hoseini S. V., Suutala J.,
Partala J., Halunen K. (2024),
Threat Modeling AI/ML With the Attack Tree,
IEEE Access, vol. 12, pp. 172610 - 172637, doi: 10.1109/ACCESS.2024.3497011
Nguyen T., Nguyen H.,
Partala, J., Pirttikangas S. (2023),
TrustedMaaS: Transforming Trust and Transparency Mobility-as-a-Service with Blockchain,
Future Generation Computer Systems 149, pp. 606-621, doi:10.1016/j.future.2023.08.011
Nguyen, H., Nguyen, T., Leppänen, T.,
Partala, J., Pirttikangas, S. (2022),
Situation Awareness for Autonomous Vehicles Using Blockchain-based Service Cooperation,
In: Franch, X., Poels, G., Gailly, F., Snoeck, M. (eds) Advanced Information
Systems Engineering. CAiSE 2022. Lecture Notes in Computer Science, vol 13295.
Springer, Cham. doi:10.1007/978-3-031-07472-1 29
Partala, J. (2021),
Indifferentiable Hash Functions in the Standard Model, IET Information Security, 15, pp. 309-316, doi:10.1049/ise2.12025
Partala, J. (2021),
Post-quantum Cryptography in 6G, in Wu Y., Singh S., Taleb T., Roy A., Dhillon H. S., Kanagarathinam M. R., De A. (ed.),
6G Mobile Wireless Networks, Springer, pp. 431-448,
doi:10.1007/978-3-030-72777-2_20
Nguyen, T., Loven, L.,
Partala, J., and Pirttikangas, S. (2021),
The Intersection of Blockchain and 6G Technologies, in Wu Y., Singh S., Taleb T., Roy A., Dhillon H. S., Kanagarathinam M. R., De A. (ed.),
6G Mobile Wireless Networks, Springer, pp. 393-417,
doi:10.1007/978-3-030-72777-2_18
Partala J., Nguyen T., Pirttikangas S. (2020),
Non-Interactive Zero-Knowledge for Blockchain: A Survey, IEEE Access, vol. 8, pp. 227945-227961, doi: 10.1109/ACCESS.2020.3046025
Ylianttila M., Kantola R., Gurtov A., Mucchi L., Oppermann I., Yan Z., Nguyen T. H., Liu F., Hewa T., Liyanage M., Ijaz A.,
Partala J., Abbas R., Hecker A., Jayousi S., Martinelli A., Caputo S., Bechtold J., Morales I., Stoica A., Abreu G., Shahabuddin S., Panayirci E., Haas H., Kumar T., Ozparlak B. O., Röning J. (2020),
6G White paper: Research challenges for Trust, Security and Privacy,
arXiv preprint arXiv:2004.11665
Nguyen T., Tran N., Loven L.,
Partala J., Kechadi M. T., Pirttikangas S. (2020),
Privacy-Aware Blockchain Innovation for 6G: Challenges and Opportunities,
2nd 6G Wireless Summit (6G SUMMIT), 1-5
Partala J., Loven L., Peltonen E., Porambage P., Ylianttila M. (2019),
EdgeAI: A Vision for Privacy-preserving Machine Learning on the Edge, SNOW 2019, Ruka, Finland, 1-4 April 2019
Porambage P., Kumar T., Liyanage M.,
Partala J., Loven L., Ylianttila M. (2019),
Sec-EdgeAI: A Vision for using Artificial Intelligence for Securing the Edge, SNOW 2019, Ruka, Finland, 1-4 April 2019
Porambage P., Kumar T., Liyanage M.,
Partala J, Loven L., Ylianttila M., Seppänen T. (2019),
Sec-Edge AI: AI for Edge Security Vs Security for Edge AI 1st 6G Wireless Summit, Levi, Finland, 24-26 March 2019
Loven L., Leppänen T., Peltonen E.,
Partala J., Harjula E., Porambage P., Ylianttila M., Riekki J. (2019),
EdgeAI: A Vision for Distributed, Edge-native Artificial Intelligence in Future 6G Networks, 1st 6G Wireless Summit, Levi, Finland, 24-26 March 2019
Partala J. (2018),
Provably Secure Covert Communication on Blockchain, Cryptography, 2(3), doi:10.3390/cryptography2030018
Partala J. (2018),
Algebraic Generalization of Diffie-Hellman Key Exchange, Journal of Mathematical Cryptology, 12(1), pp. 1-21, doi:10.1515/jmc-2017-0015
[preprint]
Fylakis A., Keskinarkaus A.,
Partala J., Saarakkala S., Seppänen T. (2017),
Reversible Data Hiding in FTIR Microspectroscopy Images with Tamper Indication and Payload Error Correction, BioMed Research International, vol. 2017, Article ID 7584852, https://doi.org/10.1155/2017/7584852
Partala J. (2017),
Symmetric blind decryption with perfect secrecy, Journal of Computer Networks and Communications, vol. 2017, Article ID 6575907, doi:10.1155/2017/6575907
Partala J. (2017),
Semantically secure symmetric encryption with error correction for distributed storage, Security and Communication Networks, vol. 2017, Article ID 4321296, doi:10.1155/2017/4321296
Partala, J., Fylakis, A., Pramila A., Keskinarkaus A., Seppänen, T., (2016),
Improving robustness of biometric identity determination with digital watermarking, Journal of Electrical and Computer Engineering, vol. 2016, Article ID 6390741, doi:10.1155/2016/6390741
Luo C., Fylakis A.,
Partala J., Klakegg S., Goncalves J., Liang K., Seppänen T., Kostakos V. (2016),
A Data Hiding Approach for Sensitive Smartphone Data, Proc. International Joint Conference on Pervasive and Ubiquitous Computing (UbiComp '16)
Partala J. (2016),
Left conjugacy closed left quasigroups with pairwise distinct left translations, JP. J. Algebra Number Theory Appl. 36(1), 95-108
Partala J. (2015),
Algebraic methods for cryptographic key exhange,
Doctoral Dissertation,
Acta Universitatis Ouluensis, Series C, Technica 519,
University of Oulu, Department of Computer Science and Engineering
Partala J., Keränen, N.; Särestöniemi, M.; Hämäläinen, M.; Iinatti, J.; Jämsä., T.; Reponen, J.; Seppänen, T. (2013),
Security threats against the transmission chain of a medical health monitoring system,
IEEE 15th International Conference on e-Health Networking, Applications & Services (Healthcom), pp.243-248, 9-12 Oct. 2013
doi: 10.1109/HealthCom.2013.6720675
Partala J. (2011)
Key agreement based on homomorphisms of algebraic structures,
Cryptology ePrint Archive, Report 2011/203
Partala J. (2009)
A note on conjugacy search and racks,
CoRR abs/0911.1891
Partala J., Seppänen T. (2008)
On the Conjugacy Search Problem and Left Conjugacy Closed Loops,
Appl. Algebra Engrg. Comm. Comput. 19(4), 311-322
Partala J., Seppänen T. (2007)
ElGamal Encryption in Paige
Loops,
JP. J. Algebra Number Theory Appl. 7, 285-296
Others
Salminen M.,
Partala, J., Väyrynen E., Kortelainen J. (2023),
Computationally Efficient Early Prognosis of the Outcome of Comatose Cardiac Arrest Survivors Using Slow-Wave Activity Features in EEG,
Computing in Cardiology, Atlanta, Georgia, USA, 1-4 Oct 2023
Nguyen T. H.,
Partala J., Pirttikangas S. (2019),
Blockchain-based Mobility-as-a-Service, 1st International Workshop on Edge of Things: Enabling Internet of Things Ecosystems through the Edge Computing (EoT 2019), The 28th International Conference on Computer Communications and Networks (ICCCN 2019), Valencia, Spain.
Hyysalo, J., Harper, G., Sauvola, J., Keskinarkaus, A., Juuso, I., Salminen, M.
Partala, J. (2017),
Defining an Architecture for Evolving Environments, ACM Symposium on Applied Computing, April 2017
Hyysalo J., Harper G., Sauvola J., Keskinarkaus A., Juuso I., Salminen M.,
Partala J. (2017),
Developing Architecture in Volatile Environments; Lessons Learned from a Biobank IT Infrastructure Project, Proc. of the 12th International Conference on Software Engineering Advances (ICSEA 2017), 95-104.
Särestöniemi M., Niemela V., Hämäläinen M., Iinatti J., Keränen N., Jämsä T.,
Partala J., Seppänen T., Reponen J. (2014)
Receiver performance evaluation on IEEE 802.15.6 based WBAN for monitoring Parkinson's disease, 8th International Symposium on Medical Information and
Communication Technology (ISMICT), pp.1-5, 2-4 April 2014, doi: 10.1109/ISMICT.2014.6825220
Keränen, N., Särestöniemi, M.,
Partala, J., Hämäläinen, M., Reponen, J., Seppänen, T., Iinatti, J., Jämsä, T. (2013)
IEEE802.15.6 -based multi-accelerometer WBAN system for monitoring Parkinson's disease,
Engineering in Medicine and Biology Society (EMBC), 35th Annual International Conference of the IEEE, pp.1656-1659, 3-7 July 2013,
doi: 10.1109/EMBC.2013.6609835
Siipo A., Laukka S. J., Seppänen T., Toivanen J.,
Partala J., Väyrynen E., Lehtihalmes M., Mattila P., Miettunen J. & Heikkilä J. (2010)
The multi-technological analyses of learning in the future classroom: Preliminary Observatory Apparatus, Proc. 3rd International eLBa Science Conference, Fraunhofer Verlag, Stuttgart, 60-6.
Lahti T., Helen M., Vuorinen O., Väyrynen E.,
Partala J., Peltola J., Mäkelä S.-M. (2008)
On enabling techniques for personal audio content management,
Proceeding of the 1st ACM international conference on Multimedia information retrieval, 113-120
Theses
Partala J. (2015),
Algebraic methods for cryptographic key exhange,
Doctoral Dissertation,
Acta Universitatis Ouluensis, Series C, Technica 519,
University of Oulu, Department of Computer Science and Engineering
Partala J. (2005),
Using Non-associative Algebra to Encrypt
Information,
Master's Thesis
(in Finnish), University of Oulu, Department of Electrical and Information
Engineering,
73p.
Partala J. (2005),
On the Order of Permutation Groups and Their
Elements,
Master's Thesis (in Finnish), University of Oulu, Department of Mathematical
Sciences, 52p.
Juha Partala
P.O.Box 4500
FIN-90014 University of Oulu
FINLAND
E-mail: firstname.lastname@oulu.fi
Last updated: 11 Dec 2024.
