LAB LOGA page on LabLog, a review site (not the lab's official page)
Kaji Lab
Machine-translated · View original
The lab investigates the security of cryptography and digital signatures.
AboutAbout the lab
Examining the security of cryptography and signatures.
Professor Yuichi Kaji's lab specializes in information theory and information security.
The lab investigates the security of cryptography and digital signatures, that is, how well they can withstand attacks.
It works on improving digital signatures with a view to the practical use of quantum computers, and on attacks against homomorphic encryption.
Key terms
- Hash-based signature
- A scheme that achieves secure digital signatures by using cryptographic hash functions
- Post-quantum security
- Security that is maintained even against attacks using quantum computers
- Fully homomorphic encryption
- An encryption scheme that allows computation on data while it remains encrypted, without seeing its contents
ResearchResearch themes
The lab examines cryptography and digital signatures from the standpoint of security, that is, how well they can withstand attacks. Its main topics are digital signatures with a view to the practical use of quantum computers, and attacks against the homomorphic encryption scheme TFHE.
*Illustrative imageDigital signatures for the quantum era
The lab works on improving and evaluating the security of hash-based signatures, which use hash functions, as digital signatures with post-quantum security. Its main areas are developing fingerprinting functions for Winternitz signatures and proving their optimality, and evaluating quantum security with consideration of the internal structure of hash functions.
*Illustrative imageAttacks against the homomorphic encryption scheme TFHE
For reaction attacks against the fully homomorphic encryption scheme TFHE, the lab investigates the minimum number of queries required and nearly optimal attack methods.
MembersFaculty
- ProfessorYuichi Kaji
VoicesStudent voices
Ratings and reviews reflect the experiences of individual current or former students, not the lab's official views. Whether a lab has reviews, or how many, says nothing about the lab itself.
Students who take part in an interview may receive a thank-you gift worth ¥1,000, regardless of what they say.
Student ratings (0 students)
--
--
--
--
--
--
Student voices answer questions like these
- What's great about this lab?
- What did you learn after joining?
- What's the vibe, and what is the professor like?
- Who is this lab for?
- Where do graduates go?
Your experience can help younger students choose their lab. Your name won't be shown.
Write a lab reviewAnonymous · Your draft is saved if you stopRelatedLabs similar to Kaji Lab
Morisaki LabSchool of Informatics, Department of Computer ScienceEducation and research, from both theoretical and practical …
Hamaguchi Lab (Software Theory Division)School of Informatics, Department of Computer ScienceEducation and research, from both theoretical and practical …
Yuen-Nakazawa Lab (SQLAB)School of Informatics, Department of Computer ScienceEducation and research, from both theoretical and practical …
Katagiri Lab (High-Performance Computing and Auto-Tuning)School of Informatics, Department of Computer ScienceEducation and research on the construction of information ne…The information on this page is compiled by the LabLog team from the lab's public information and interviews. For corrections or removal requests, please contact LabLog, not the lab.
Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Centaur server room ( )” VIA Gallery from Hsintien, Taiwan / CC BY 2.0 (cropped)
- Digital signatures for the quantum era: “Measuring a qubit leaves no room for error” FMNLab / CC BY 4.0 (cropped)
- Attacks against the homomorphic encryption scheme TFHE: “Computer locked” Juan Pablo Olmo / CC BY 2.0 (cropped)
- Related lab (森崎研究室): “Atari 800 XL home computer with monitor and tape program recorder XC12” winkelnkemper / CC BY-SA 2.0 (cropped)
- Related lab (ソフトウェア論講座 濱口 毅): “Software development methodologies” Marcel Douwe Dekker / CC BY-SA 3.0 (cropped)
- Related lab (結縁・中澤研究室
（SQLAB） ): “Coder screen shot” Wikideas1 / CC0 (cropped) - Related lab (片桐研究室
（高性能計算・ 自動チューニング） ): “Nanoscience High-Performance Computing Facility” Matt Howard / CC BY-SA 2.0 (cropped)
About LabLog
LabLog is a lab review app for students only. Student members at each university interview students in labs and publish what they say. Student voices can only be read by students who sign up with a university email address. Operated by bestiee Inc.
Learn more about LabLog ↗Search engines and AI may reference the basic lab info and rating summaries on this page and the description of LabLog. Student voices are for student members only. Automated collection by programs (scraping, or input to or training of AI) is prohibited under Article 8 of the Terms of Service. If you need data for research or analysis, please contact us.