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Ogata Lab
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A cryptography lab working to make the internet safe to use.
AboutAbout the lab
So that people can use the internet with peace of mind.
The Ogata Lab studies cryptography for protecting communications and data.
The role of cryptography now goes beyond protecting communications. It extends to proving a person's identity, proving that the content of a communication is correct, and protecting privacy.
The lab works on highly functional cryptography such as attribute-based encryption and fully homomorphic encryption, as well as cryptography designed to withstand quantum computers.
It also works on applications to FinTech, blockchain, and services that do not require trusting the server.
Key terms
- Cryptography
- The field that studies, using mathematics, methods for keeping information from being read by third parties and the security of those methods
- Secret sharing
- A method of splitting data into multiple parts and entrusting them to different holders so that the original can be restored only when a specified number of parts are gathered
- Post-quantum cryptography
- Cryptographic schemes designed so that they cannot be broken even when quantum computers become a reality
ResearchResearch themes
The Ogata Lab conducts research on cryptography. It works on both the cryptography itself, which protects data, and on applications of cryptographic technology such as FinTech and services that do not require trusting the server.
*Illustrative imageHighly Functional Cryptography
The lab studies highly functional cryptographic technologies such as attribute-based encryption, fully homomorphic encryption, and cryptographic obfuscation. Within cryptography for protecting data, this theme aims to expand what cryptography can do.
*Illustrative imageCoping with Information Leakage and Loss
The lab considers how to deal with information being leaked or lost. It focuses on secret sharing, which it studies as one area of cryptography for protecting data.
*Illustrative imagePost-Quantum Cryptography
The lab works on post-quantum cryptography, including lattice-based cryptography, code-based cryptography, and isogeny-based cryptography.
*Illustrative imageFinTech and Blockchain
The lab treats FinTech and blockchain as applications of cryptographic technology. Its work includes proposing new consensus mechanisms, countering the tracing of transaction histories, and applications beyond cryptocurrency.
MembersFaculty
The members of the Ogata Lab consist of faculty members and doctoral, master's, and undergraduate students.As of 2025
- ProfessorWakaha OgataPublications ↗
VoicesStudent voices
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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: “Enigma-IMG 0487-black” Rama / CC BY-SA 2.0 fr (cropped)
- Highly Functional Cryptography: “Solex 99 30 padlock with keys (DSCF2659)” Trougnouf / CC BY 4.0 (cropped)
- Coping with Information Leakage and Loss: “Padlock klódka ubt” Tomasz Sienicki [user: tsca, mail: tomasz.sienicki at gmail.com] / CC BY-SA 3.0 (cropped)
- Post-Quantum Cryptography: “Padlock with lattice background” M. B., Jr. / CC BY-SA 4.0 (cropped)
- FinTech and Blockchain: “Blockchain main chain” Michele 93 / Public domain (cropped)
- Related lab (Matsumoto Lab): “Optical fiber cable-01ASD” Asurnipal / CC BY-SA 4.0 (cropped)
- Related lab (Kasai Lab): “Quantum-computer-Chalmers 2017” Anita Fors (Chalmers) / CC BY-SA 4.0 (cropped)
- Related lab (Nakahara Lab): “NASA to Test Solution for Radiation-Tolerant Computing in Space (FPGA Board Rev )” NASA Marshall Space Flight Center / NASA/Firefly Aerospace / Public domain (cropped)
- Related lab (Kuroda Lab): “Cosine Series Plus Noise TFM” Fourier1789 / CC BY-SA 4.0 (cropped)
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