2026 Helger Lipmaa: 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	36	11250	10929	5	3	122	5638

Discipline name

D-Index

World Ranking

Current World Ranking

National Ranking

Current National Ranking

Publications

Citations

Computer Science

11250

10929

122

5638

Research.com Recognitions

2026 - Research.com Computer Science in Estonia Leader Award

Overview

Helger Lipmaa is affiliated with the University of Tartu in Estonia and has contributed extensively to the field of computer science, particularly focusing on areas related to cryptography and data security. Their research spans various subfields including artificial intelligence, computational theory and mathematics, information systems, computer networks and communications, and signal processing.

The primary areas of study for Lipmaa encompass:

Cryptography and Data Security
Complexity and Algorithms in Graphs
Blockchain Technology Applications and Security
Privacy-Preserving Technologies in Data
Security and Verification in Computing
Advanced Malware Detection Techniques
Adversarial Robustness in Machine Learning

Lipmaa has published in notable venues such as:

Journal of Cryptology
Lecture Notes in Computer Science

Best Publications

On private scalar product computation for privacy-preserving data mining

Bart Goethals;Sven Laur;Helger Lipmaa;Taneli Mielikäinen

566
Citations
An oblivious transfer protocol with log-squared communication

Helger Lipmaa

392
Citations
Efficient algorithms for computing differential properties of addition

Helger Lipmaa;Shiho Moriai

326
Citations
Progression-free sets and sublinear pairing-based non-interactive zero-knowledge arguments

Helger Lipmaa

290
Citations
Secure Vickrey auctions without threshold trust

Helger Lipmaa;N. Asokan;Valtteri Niemi

232
Citations
Comments to NIST concerning AES Modes of Operations: CTR-Mode Encryption

Helger Lipmaa;Phillip Rogaway;David Wagner

230
Citations
Multi-query computationally-private information retrieval with constant communication rate

Jens Groth;Aggelos Kiayias;Helger Lipmaa

220
Citations
Time-Stamping with Binary Linking Schemes

Ahto Buldas;Peeter Laud;Helger Lipmaa;Jan Willemson

210
Citations
On Diophantine Complexity and Statistical Zero-Knowledge Arguments

Helger Lipmaa

208
Citations
Designated verifier signature schemes: attacks, new security notions and a new construction

Helger Lipmaa;Guilin Wang;Feng Bao

198
Citations
Cryptographically private support vector machines

Sven Laur;Helger Lipmaa;Taneli Mielikäinen

181
Citations
Verifiable Homomorphic Oblivious Transfer and Private Equality Test

Helger Lipmaa

146
Citations
Succinct Non-Interactive Zero Knowledge Arguments from Span Programs and Linear Error-Correcting Codes

Helger Lipmaa

132
Citations
Accountable certificate management using undeniable attestations

Ahto Buldas;Peeter Laud;Helger Lipmaa

126
Citations
Hybrid voting protocols and hardness of manipulation

Edith Elkind;Helger Lipmaa

109
Citations
Fast Implementations of AES Candidates.

Kazumaro Aoki;Helger Lipmaa

106
Citations
Optimally Efficient Accountable Time-Stamping

Ahto Buldas;Helger Lipmaa;Berry Schoenmakers

100
Citations
A Subversion-Resistant SNARK

Behzad Abdolmaleki;Karim Baghery;Helger Lipmaa;Michał Zając

99
Citations
First CPIR Protocol with Data-Dependent Computation.

Helger Lipmaa

86
Citations
Secure equality and greater-than tests with sublinear online complexity

Helger Lipmaa;Tomas Toft

81
Citations
Time-stamping with binary linking schemes

A. Buldas;P. Laud;H. Lipmaa;J. Villemson

9
Citations

Frequent Co-Authors

Aggelos Kiayias University of Edinburgh

Edith Elkind University of Oxford

Abhi Shelat Northeastern University

Nadarajah Asokan University of Waterloo

Markus Jakobsson ZapFraud

Andris Ambainis University of Latvia

Bart Goethals University of Antwerp

Hideki Imai Chuo University

Phillip Rogaway University of California, Davis

Yvo Desmedt The University of Texas at Dallas

External Links

Personal website of Helger Lipmaa Google Scholar page

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