2026 Thomas Johansson: Computer Science Researcher – H-Index, Publications & Awards

Discipline name	D-Index	World Ranking	Current World Ranking	National Ranking	Current National Ranking	Publications	Citations
Computer Science	49	5921	5753	39	39	199	8966

Thomas Johansson publication distribution in Computer Science in 2026

The chart shows the distribution of publications by all Research.com ranked scientists in the field of Computer Science in 2026. The highlighted bar marks where Thomas Johansson sits on this spectrum.

32 publications 991+

This scientist: 199 publications — 46th percentile

46% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 991 publications or more.

Thomas Johansson D-index placement in Computer Science in 2026

The chart shows the D-index (discipline H-index) distribution of Computer Science scientists ranked by Research.com in 2026. The highlighted bar marks where Thomas Johansson sits on this spectrum.

30 D-Index 131+

This scientist: 49 D-Index — 60th percentile

60% of scientists in this discipline score the same or lower.

The last bar groups every scientist with 131 D-Index or more.

Overview

Thomas Johansson is affiliated with Lund University in Sweden and has contributed significantly to the field of computer science, with a particular focus on cryptography and related security implementations. Their research spans a range of topics including cryptographic implementations and security, coding theory and cryptography, and chaos-based image and signal encryption.

The main research topics Thomas Johansson has explored include:

Cryptographic Implementations and Security
Coding theory and cryptography
Chaos-based Image/Signal Encryption
Cryptography and Data Security
Physical Unclonable Functions (PUFs) and Hardware Security
Electrowetting and Microfluidic Technologies
Radiation Effects in Electronics

Thomas Johansson's extensive publication record includes research papers, book chapters, and collaborations with several frequent co-authors. The most frequent collaborators include Qian Guo, Alexander Maximov, Jing Yang, Alexander Nilsson, and John Byrne.

Frequent publication venues for their work are:

IACR Transactions on Symmetric Cryptology
IACR Transactions on Cryptographic Hardware and Embedded Systems
Wiley Interdisciplinary Reviews Energy and Environment
IEEE Transactions on Information Theory
DOAJ (DOAJ: Directory of Open Access Journals)

Recent papers by Thomas Johansson encompass the following:

"A Side-Channel Attack on a Masked IND-CCA Secure Saber KEM Implementation" (2021), published in IACR Transactions on Cryptographic Hardware and Embedded Systems
"Don't Reject This: Key-Recovery Timing Attacks Due to Rejection-Sampling in HQC and BIKE" (2022), published in IACR Transactions on Cryptographic Hardware and Embedded Systems
"An overview of cryptographic primitives for possible use in 5G and beyond" (2020), published in Science China Information Sciences
"A Key-Recovery Side-Channel Attack on Classic McEliece Implementations" (2022), published in IACR Transactions on Cryptographic Hardware and Embedded Systems
"Improved guess-and-determine and distinguishing attacks on SNOW-V" (2021), published in IACR Transactions on Symmetric Cryptology

Thomas Johansson has also contributed to the academic literature through book publications. One notable book is Post-Quantum Cryptography, published in 2022 by Springer Science+Business Media.

Their research contributions bridge several interconnected subfields of study, including artificial intelligence, computer vision and pattern recognition, electrical and electronic engineering, biomedical engineering, and hardware and architecture.

Best Publications

Grain: a stream cipher for constrained environments

Martin Hell;Thomas Johansson;Willi Meier

723
Citations
Fast computation of large distributions and its cryptographic applications

Alexander Maximov;Thomas Johansson

483
Citations
A New Version of the Stream Cipher SNOW

Patrik Ekdahl;Thomas Johansson

422
Citations
A Stream Cipher Proposal: Grain-128

Martin Hell;Thomas Johansson;Alexander Maximov;Willi Meier

350
Citations
The Grain Family of Stream Ciphers

Martin Hell;Thomas Johansson;Alexander Maximov;Willi Meier

306
Citations
Grain-128a: a new version of Grain-128 with optional authentication

Martin Ågren;Martin Hell;Thomas Johansson;Willi Meier

275
Citations
Improved fast correlation attacks on stream ciphers via convolutional codes

Thomas Johansson;Fredrik Jönsson

232
Citations
Another attack on A5/1

P. Ekdahl;T. Johansson

225
Citations
A Simple Algorithm for Fast Correlation Attacks on Stream Ciphers

Vladimor V. Chepyzhov;Thomas Johansson;Ben Smeets

211
Citations
Mapping insect defoliation in Scots pine with MODIS time-series data

Lars Eklundh;Thomas Johansson;Svein Solberg

203
Citations
A Key Recovery Attack on MDPC with CCA Security Using Decoding Errors.

Qian Guo;Thomas Johansson;Paul Stankovski

203
Citations
Advances in Cryptology -- EUROCRYPT 2013

Thomas Johansson;Phong Q. Nguyen

196
Citations
Fast correlation attacks through reconstruction of linear polynomials

T. Johansson;F. Jönsson

194
Citations
On families of hash functions via geometric codes and concatenation

Jürgen Bierbrauer;Thomas Johansson;Gregory Kabatianskii;Ben Smeets

186
Citations
SNOW - A new stream cipher

Patrik Ekdahl;Thomas Johansson

184
Citations
Progress in Cryptology - INDOCRYPT 2003

Thomas Johansson

164
Citations
Fast correlation attacks based on turbo code techniques

T. Johansson;F. Jönsson

152
Citations
A framework for chosen IV statistical analysis of stream ciphers

Håkan Englund;Thomas Johansson;Meltem Sönmez Turan

144
Citations
New Constructions of Resilient and Correlation Immune Boolean Functions Achieving Upper Bound on Nonlinearity

Emir Pasalic;Subhamoy Maitra;Thomas Johansson;Palash Sarkar

141
Citations
New Technique for Decoding Codes in the Rank Metric and Its Cryptography Applications

A. V. Ourivski;T. Johansson

129
Citations
Advances in Cryptology--EUROCRYPT 2012: 31st Annual International Conference on the Theory and Applications of Cryptographic Techniques

David Pointcheval;Thomas Johansson

75
Citations

Frequent Co-Authors

Willi Meier University of Applied Sciences and Arts Northwestern Switzerland

Staffan Nilsson University of Gothenburg

Per Tunestål Lund University

Bengt Johansson Technical University of Denmark

Eva Degerman Lund University

Subhamoy Maitra Indian Statistical Institute

José Goldemberg Universidade de São Paulo

Palash Sarkar Indian Statistical Institute

Phong Q. Nguyen French Institute for Research in Computer Science and Automation - INRIA

David Pointcheval École Normale Supérieure

External Links

Personal website of Thomas Johansson

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