Ivana Singr Trummová
Cryptography Researcher, Teacher, PhD Student, Scout Leader.
I am currently exploring the frontiers of and human factors in cryptography - especially the post-quantum one. This website serves as a directory of all the projects I am involved in.
news
March 2026 I talked to Jan Lukačevič about Human Factors in Cryptography at Czech Radio 2.
February 2026 I have been invited to speak at Žárovky about Human Factors in Cryptography.
October 2025 I presented our paper about Cryptography Competitions at CCS in Taipei.
September 2025 I spoke at CyberCon about Crypto Competitions.
August 2025 Our paper about Cryptography Competitions got accepted to CCS!
Příběh absolventa FIT ČVUT (June 2025) (CZ)
A story about my experience a master/postgrad student at FIT CTU.
Crypto café (February 2025) (EN)
Invited talk at Florida Atlantic University's seminar Crypto Café: Human Factors in Cryptography.
About
My name is Ivana Singr Trummová. I am a cryptography researcher and a teacher focusing on human factors in security. I am currently pursuing a PhD in cryptography at the Faculty of Information Technology, Czech Technical University (CTU) in Prague. I also work as a teacher assistant at CTU, teaching courses on cryptography, mathematics and cybersecurity. I created a course called "Human Factors in Cryptography and Security", which aims to bring an inter-disciplinary point of view to computer science students.I am a part of TeamUSEC (CISPA, LUH) in Hannover, where I stayed during the summer of 2024, and I collaborated with CASA and HCS RUB in Bochum, where I spent the winter semester in 2022. I have also contributed to the field by working for National Cyber and Information Security Agency (NÚKIB) as a Cryptography Software and Hardware Analyst.With a background in mathematics (MFF UK), both academic research and practical application of cryptography and security principles, I found my professional purpose in studying how cryptography serves humans and in teaching that to my students.I am active in the Czech Scout Movement as a youth leader and instructor. I am a yoga practitioner and an outdoor enthusiast.
teaching
A list of courses I have been teaching at FIT CTU:
2025/2026 winter semester:
Lidské faktory kryptografie a bezpečnosti (Human Factors in Cryptography and Security)
- course creator and main lecturer2024/2025 summer semester:
Kryptografie a bezpečnost (Cryptography and Security)
- assistant lecturer2024/2025 winter semester:
Lidské faktory kryptografie a bezpečnosti (Human Factors in Cryptography and Security)
- course creator and main lecturer
Capture The Flag
- assistant lecturer and fellow player2023/2024 summer semester:
Kryptografie a bezpečnost (Cryptography and Security)
- assistant lecturer2023/2024 winter semester:
Úvod do kybernetické bezpečnosti (Introduction to Cybersecurity)
- assistant lecturer2022/2023 summer semester:
Matematika pro kryptologii (Mathematics for Cryptology)
- assistant lecturer
Current research projects
Transition to Post-Quantum Cryptography in Organizations
With the NIST PQC standardization effort slowly coming to an end, we have been watching the reaction to the quantum threat.Millions of digital systems must transition from traditional public-key cryptography to post-quantum cryptography (PQC).
Government agencies already recommend or require this transition, as PQC offers stronger security guarantees against quantum-computing threats.
Yet moving to PQC is a complex undertaking: organizations must update software and hardware, select new cryptographic algorithms, renew certifications, and train their staff.
Our aim is to understand the challenges of transition to PQC.
publications
I have contributed to the following publications so far:
Competing for Attention: An Interview Study with Participants of Cryptography Competitions
Ivana Trummová, Juliane Schmüser, Nicolas Huaman, Sascha Fahl
In CCS '25: ACM SIGSAC Conference on Computer and Communications Security, Taipei, Taiwan.In the past two to three decades, multiple competitions took place and had impact on the cryptography ecosystem and its overall security. We studied the processes, compared them, assessed their impact and gathered the lessons we have learned.
Adoption Challenges for Cryptographic Protocols
Konstantin Fischer, Ivana Trummová, Phillip Gajland, Yasemin Acar, Sascha Fahl, Angela Sasse
In IEEE Security & Privacy, 2024.
“You have to read 50 different RFCs that contradict each other”: An Interview Study on the Experiences of Implementing Cryptographic Standards
Nicolas Huaman, Jacques Suray, Jan Klemmer, Marcel Fourné, Sabrina Amft, Ivana Trummová, Yasemin Acar, Sascha Fahl
In 33nd USENIX Security Symposium, USENIX 2024, Philadelphia PA, USA, August 14-16, 2024
The Challenges of Bringing Cryptography from Research Papers to Products: Results from an Interview Study with Experts
Konstantin Fischer, Ivana Trummová, Phillip Gajland, Yasemin Acar, Sascha Fahl, Angela Sasse
In 33nd USENIX Security Symposium, USENIX 2024, Philadelphia PA, USA, August 14-16, 2024
Security Notions for the VeraGreg Framework and Their Reductions
Jakub Klemsa, Ivana Trummová
In Cryptology ePrint Archive, Paper 2019/588, 2019.
You can also find my work here:
Google Scholar,
Personal profile at FIT CTU,
Personal profile at TeamUSEC.
Supervision
I have been supervising theses at FIT CTU:
2026
Zuzana Guzyová: Analysis of Static Application Security Testing (SAST) usage in professional experience (SK) Bc. (2026)
Lukáš Lodr: Analysis of IoMT device communication security in healthcare environment (CZ) Bc. (2026)
Robin Mitan: Study Materials for Post-Quantum Cryptography (CZ) Bc. (2026)
Sagadat Seitzhan: Practical Migration to Post-Quantum Cryptography: Implementing and Benchmarking Hybrid Cryptographic Schemes (EN) Bc. (2026)
Alexandr Stehlík Web-Based Learning Tool for Post-Quantum Cryptography (CZ) Bc. (2026)
2025
Lukáš Kaisrlík: Implementation and Analysis of Post-Quantum Lattice-Based Digital Signature Standard (CZ) Bc., Completed. (2025)
Tobias Klačanský: The Digital Frontline: Cyber Warfare during the Ukraine-Russia Conflict (EN) Bc., Completed. (2025)
Filip Kresl: Implementation Analysis of a Post-Quantum Key Encapsulation Standard (EN) Bc., Completed. (2025)
Samuel Sochuľák: Comprehensive Analysis of Phishing Attacks and Their Mitigation (SK) Bc., Completed. (2025)
Ondřej Vlásek: Implementation and Analysis of Post-Quantum Hash-Based Digital Signature Standard (CZ) Bc., Completed. (2025)
Valerie Hladká: Managing Post-Quantum Cryptography Migration
Please reach out if you are interested! I'm always looking for collaborators.
miscellaneous
Tam a zase zpátky podcast: Ženy ve Středozemi (2025) (CZ)
A summer side quest/passion project.
Frisbee podcast "Lítám v tom" (2024) (CZ)
VLK Nota Bene (CZ)
This is what I do during summer. A school for young scout leaders. This is where I come to learn how to be a better teacher, and a better person.
Contact
Reach me at trummiva [ at ] fit.cvut.cz
PGP Key ID: 0x6AC18468EFBC60BF (or search trummiva [ at ] fit.cvut.cz on OpenPGP Key Server)