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Yamaguchi Lab
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The lab studies information security based on coding theory.
AboutAbout the lab
Protecting information through coding theory
The Yamaguchi Lab studies information security, building on coding theory and information theory.
The lab works on applying error-correcting codes to digital watermarking and on collusion-secure codes for digital fingerprinting.
The lab also lists cryptography and discrete mathematics among its areas of interest.
Key terms
- Error-correcting codes
- Codes that add redundant information to data before it is sent, so that the receiver can correct errors that occur along the way.
- Soft-decision decoding
- A method that does not force a received signal to be either 0 or 1, but also uses information about how likely each value is to estimate the original data.
- Digital watermarking
- A technology for embedding additional information into data such as images or audio.
- LDPC codes
- A type of error-correcting code whose parity-check matrix has mostly zero entries.
ResearchResearch themes
The lab is grounded in coding theory, centered on error-correcting codes, and in information theory. It also applies these ideas to information security, including digital watermarking.
*Illustrative imageCoding Theory and Information Theory
Centered on error-correcting codes, the lab is interested in research that assumes a variety of decoding algorithms, including coded modulation and soft-decision decoding. Data compression algorithms, cryptography, and discrete mathematics are also areas of interest.
*Illustrative imageApplying Codes to Digital Watermarking and Digital Fingerprinting
The lab works on applying error-correcting codes to digital watermarking. It also studies collusion-secure codes for digital fingerprinting, as well as turbo codes and LDPC codes.
MembersFaculty
- Associate ProfessorKazuhiko Yamaguchi
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: “QR Code Linking to QR Code Apps” User1042 / CC BY 4.0 (cropped)
- Coding Theory and Information Theory: “Micron PC2700 DDR ECC REG” Mixabest / Public domain (cropped)
- Applying Codes to Digital Watermarking and Digital Fingerprinting: “Watermark Crown CA” 作者不詳 / Public domain (cropped)
- Related lab (栗原 正純 研究室): “Data storage mediums” Unnerving duck / CC0 (cropped)
- Related lab (八木 秀樹 研究室): “Conv code 177 133” Kirlf / CC BY-SA 4.0 (cropped)
- Related lab (大濱 靖匡・Santoso Bagus 研究室): “NASA secure communication console at National Cryptologic Museum.agr” ArnoldReinhold / CC BY-SA 4.0 (cropped)
- Related lab (岩本 貢・渡邉 洋平 研究室): “Crypto rings from a Enigma. ( )” Simon Claessen from The Netherlands / CC BY-SA 2.0 (cropped)
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