Content Security Lab


Lab Name and Affiliation

Content Security Lab

National Institute of Informatics (NII) / The Graduate University For Advanced Studies (SOKENDAI)

Lab Director (or Principal Investigator)

Isao Echizen received B.S., M.S., and D.E. degrees from the Tokyo Institute of Technology, Japan, in 1995, 1997, and 2003. He joined Hitachi, Ltd. in 1997 and until 2007 was Research Engineer in companyˇ¦s Systems Development Laboratory. He is currently an Associate Professor of the National Institute of Informatics (NII) and a Visiting Professor of the University of Freiburg. He has been engaged in research on information security, copyright protection technologies, and multimedia application systems. He received the President's Technology Award from Hitachi in 2000, the Best Paper Award from IPSJ in 2005, the Best Paper Award of IEEE IIHMSP in 2006, and the Distinguished Service Award from IEICE Information and Systems Society in 2008. He is a member of the IEEE, IPSJ, and ITE.

Lab Introduction

Digital media-such as pictures, movies, and music-have become widely available due to their advantages over analog media. However, copyright infringement, information leaks, and alteration remain problematic with digital content because it can easily be modified, copied, and sent illegally over the Internet.

Our goal is to establish content security technologies and systems for fair use of digital content. We have developed and continue to develop fundamental content security technologies, such as information hiding and content anonymization, content security systems that provide copyright protection, information leakage protection, and authenticity assurance, and other security measures. Below are example research projects of our laboratory.

Security technologies for overcoming analog-hole problem
- Technology to prevent unauthorized copying of screens
- Technology to prevent unauthorized copying of displays

Privacy-enhancing technologies for resolving trade-offs between data anonymity and utility
- Privacy Visor
- Fingerprinting technologies for anonymizing data
- Privacy in business processes

Information hiding
- Color picture Watermarking Survivability to Wide Range of Geometrical Transformations
- Maintaining picture quality of color picture watermarking based on human visual system
- Reversible acoustic information hiding for integrity verification

Lab Contact E-mail