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Sugawara Lab
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A lab that studies security at the boundary between software and hardware.
AboutAbout the lab
Research on security problems at the boundary of software and hardware.
The Sugawara Lab studies security problems at the interface between software and hardware.
When information technology connects to real-world equipment, as in autonomous driving or automated factory operation, new threats emerge in hardware and the analog domain.
The lab studies in advance what kinds of attacks are possible and what kinds of countermeasures are possible.
Its research themes are attacks that deceive sensors, and side-channel attacks that exploit information leaking from devices implementing cryptography.
Key terms
- Sensor spoofing attack
- An attack that injects false information in the analog domain, before information is digitized, to deceive the values a sensor measures.
- Side-channel attack
- An attack that breaks cryptography by exploiting tiny information leaks, visible in the power consumption or electromagnetic emissions of a chip implementing the cryptography.
- Light Commands
- An attack that uses laser light to inject commands into a smart speaker silently.
NewsLab news
A doctoral student presented joint research with Mitsubishi Electric, NTT, NEC, and others at Crypto 2026
A master's student presented joint research with the University of Florida at USENIX WOOT 2026
A doctoral student presented research on AESpoly, a new cryptographic scheme, at IEEE S&P 2026
Joint research on vulnerabilities in thermal cameras presented at NDSS
A doctoral student presented research on CHCTR2, a new cryptographic scheme, at Asiacrypt 2025
ResearchResearch themes
When information systems connect to real-world equipment such as cars, robots, and factories, new threats arise in hardware and the analog domain. The lab studies in advance what kinds of attacks and countermeasures are possible, and tackles security problems at the interface between software and hardware.
*Illustrative imageSensor-Deception Attacks and Countermeasures
The lab studies sensor spoofing attacks, which inject false information in the analog domain, including the physical mechanisms that make them possible and countermeasures based on signal processing. One example is Light Commands, which uses laser light to inject commands into a smart speaker silently.
*Illustrative imageEvaluating and Defending Against Side-Channel Attacks
Devices used in environments where the owner may be the attacker, such as IC cards, must withstand powerful attacks that involve physical access. The lab studies security evaluation of, and countermeasures against, side-channel attacks that break cryptography from changes in the power consumption or electromagnetic emissions of cryptographic chips.
MembersFaculty
The Sugawara Lab's members are faculty, administrative assistants, and doctoral, master's, and undergraduate students.As of 2026
- Associate ProfessorTakeshi Sugawara
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: “Car parking sensor closeup” Shixart1985 / CC BY 2.0 (cropped)
- Sensor-Deception Attacks and Countermeasures: “PIR sensor for arduino” Nowforever / CC BY-SA 4.0 (cropped)
- Evaluating and Defending Against Side-Channel Attacks: “Tektronix Oscilloscope 475A” Pittigrilli / CC BY-SA 4.0 (cropped)
- Related lab (Ohama-Santoso Lab): “NASA secure communication console at National Cryptologic Museum.agr” ArnoldReinhold / CC BY-SA 4.0 (cropped)
- Related lab (Sakiyama-Li-Miyahara Lab): “Smart-Card-Chip back” jailbird / CC BY-SA 3.0 de (cropped)
- Related lab (Wada Lab): “Waveguide stub filter” SpinningSpark / CC BY-SA 3.0 (cropped)
- Related lab (Ichino Lab): “Fingerprint reader 2” Flanoz / CC0 (cropped)
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