News

2024

  • December 18, 2024: We got funding! Estonian Research Council grant PRG2531 "Modern Cryptographic Techniques", for topics ranging from modern ZK and SNARKs, post-quantum cryptography, code-based cryptography, and related topics in cryptography and coding theory.
  • December 16, 2024: Together with two other research groups, we started to co-organize "Mathy CS" seminars. (The first talk was on December 16)
  • December 11, 2024: We hired two new lecturers—more information in January.
  • November 20--24, 2024: Research visits by Janno Siim and Maiara Bollauf
  • November 1, 2024: We will start giving a new BSc level course, LTAT.04.020 Cryptography, starting from Fall 2025. Stay tuned. (Lecturer: Toomas Krips)
  • October 12, 2024: ZKSummit 12 is happening in Lisbon. Helger Lipmaa is invited to present his paper Polymath: Groth16 Is Not The Limit (Crypto 2024)
  • October 1, 2024: We have two open lecturership positions, one in cryptography and another one in coding theory and cryptography
  • September 26, 2024: Our group has a table booked for the inaugural "Institute of Computer Science Day". Toomas Krips and Sedat Akleylek are present with lollipop. Come and visit.
  • September 12, 2024: Helger Lipmaa presented his paper Polymath: Groth16 Is Not The Limit (Crypto 2024) in an online seminar organized by Nexus.
  • September 1, 2024: Erki Külaots started as a Ph.D. student
  • September 1, 2024: Helger Lipmaa (jointly with people from machine learning and formal verification) obtained a new grant on foundations of digital solutions and AI
  • September 1, 2024: New semester started. Sedat Akleylek is reading a new course on Public-Key Cryptography, Helger Lipmaa a new course on Zero-Knowledge Proofs, and Toomas Krips is organizing Research Seminar on Cryptography And Cyber Security
  • August 27, 2024: Shuto Kuriyama defended his MSc thesis "Onigoroshi: Polynomial Interactive Oracle Proofs for Circuit Satisfiability over Cyclotomic Rings with Automorphism Gates" (supervisors: Russell W.F. Lai and Helger Lipmaa)
  • August 25, 2024: Our paper "Actively Secure Polynomial Evaluation from Shared Polynomial Encodings" by Pascal Reisert, Toomas Krips, Sebastian Hasler, Marc Rivinius, and Ralf Küsters was accepted to Asiacrypt 2024!
  • August 22, 2024: Helger Lipmaa presented his paper Polymath: Groth16 Is Not The Limit at Crypto 2024. See for the video (to be uploaded soon).
  • August 13, 2024: Pille Pullonen-Raudvere defended her Ph.D. thesis Foundations of efficient and secure algorithm development for secure multiparty computation (supervisors: Sven Laur and Dan Bogdanov)
  • July 2, 2024: Our paper "Shuffle Arguments Based on Subset-Checking" (Behzad Abdolmaleki, Prastudy Mungkas Fauzi, Toomas Krips, Janno Siim) was accepted to the SCN 2024 Conference! (All Behzad, Prastudy, and Janno are also alumni of our group)
  • July 1, 2024: Erki Külaots was accepted as a new PhD student (supervisor: Helger Lipmaa)
  • June 23-27, 2024: Helger Lipmaa participated with an invited presentation at the CIBE 2024 workshop, where he presented our Eurocrypt 2024 paper.
  • June 12, 2024: Erki Külaots defended MSc thesis on "Two-Party Multi-Point Function Secret Sharing" (supervisor: Toomas Krips)
  • June 12, 2024: Helger Lipmaa gave an invited presentation (in Estonian) at the conference Küberinnovatsioon 2024, introducing zero-knowledge proofs to general audience.
  • May 3, 2024: Our paper "Polymath: Groth16 Is Not The Limit" (Helger Lipmaa) was accepted to the Crypto 2024 Conference!
  • Mar 25, 2024: Roberto Parisella gave an invited talk to Privacy and Scaling Explorations about our Eurocrypt 2024 paper. Youtube video: Constant-Size zk-SNARKs in ROM from Falsifiable Assumptions
  • March 1, 2024: Helger Lipmaa has been running internal ZK seminars at the CS department (but attended also by some people from outside)
  • February 2-4, 2024: We coorganized the Estonian-Latvian Joint Theory Days (2-4 February, 2024)
  • February 1, 2024: We are joined by a new postdoc Bora Bugra Sezer.
  • January 31, 2024: Our paper "Constant-Size zk-SNARKs in ROM from Falsifiable Assumptions" (Helger Lipmaa, Roberto Parisella, Janno Siim) was accepted to the Eurocrypt 2024 Conference!

2023

  • December 22, 2023: Our paper "Title: Lookup Arguments: Improvements, Extensions and Applications to Zero-Knowledge Decision Trees" (Matteo Campanelli, Antonio Faonio, Dario Fiore, Tianyu Li, Helger Lipmaa) was accepted to the PKC 2024 conference! See https://eprint.iacr.org/2023/1518 for the eprint version.
  • December 7, 2023: Helger Lipmaa presented his paper On Black-Box Knowledge-Sound Commit-And-Prove SNARKs at Asiacrypt 2023. See for the video.
  • December 2, 2023: Roberto Parisella presented our paper Algebraic Group Model with Oblivious Sampling (Helger Lipmaa, Roberto Parisella, Janno Siim) at TCC 2023. See for the video (start at 39:00).
  • November 1, 2023: Helger Lipmaa rejoins the cryptography group as a leader. Many thanks to Dominique Unruh, who did it before that! (Dominique continues with 20%.)

2018 --- 2023

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2018

2017

  • Helger Lipmaa has several positions within a new Horizon 2020 project
  • December 1, 2017: Open Position: Research Fellow in Cryptography
    • Helger Lipmaa has a permanent position in his group
  • November 24-26, 2017: Estonian-Latvian Joint Theory Days is organized in Tartu
  • November 21-28, 2017: Research visit by Bingsheng Zhang
  • November 6-8, 2017: Nordsec 2017 is organized in Tartu
  • November 4-10, 2017: Research visit by Prastudy Fauzi
  • November 7, 2017 (and following Tuesdays): Presentation of student projects in Research Seminar in Cryptography: see schedule
  • October 2017: Our paper "A Subversion-Resistant SNARK" (Behzad Abdolmaleki, Karim Baghery, Helger Lipmaa, Michał Zając) from Asiacrypt 2017 was one of the three papers to be invited to Journal of Cryptology
  • August 2017: Helger Lipmaa the scientific coordinator for University of Tartu of the H2020 European project "PRIViLEDGE" (Privacy-Enhancing Cryptography in Distributed Ledgers), that focuses on Blockchain technology. The project starts from Jan 1, 2018.
  • August 2017: Three papers from University of Tartu were accepted to Asiacrypt 2017
  • June 5, 2017: PhD defense of Jaak Randmets
  • April 12, 2017: Ph.D. defense of Rafik Chaabouni at EPFL. Helger Lipmaa was cosupervisor
  • February 17, 2017: Ph.D. defense of Prastudy Fauzi
  • February 16, 2017: Invited talk by Carla Ràfols

2016

  • October 1, 2016: Helger Lipmaa's group was joined by new MSc student Annabell Kuldmaa
  • April 1, 2016: Helger Lipmaa's group was joined by new PhD students Behzad Abdolmaleki and Karim Baghery
  • March 15, 2016: Invited talk by Kurt Rohloff
  • March 14, 2016: Ph.D. defense of Riivo Talviste
  • From January 1, 2016, we were joined by Michal Zajac (his responsibility is local coordination of the Panoramix project) and Janno Siim.

2014

04.07.2014 New PhD students accepted: Ivo Kubjas and Yauhen Yakimenka (both supervised by Vitaly Skachek)

2013