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Thursday, July 3, 2008
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New Technology Ensures Authenticity of Digital Video Clips
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Fujitsu Laboratories has developed a technology that makes it possible to check the authenticity of a recorded video, while at the same verifying the time that the video data was recorded.
This new technology makes it possible to ensure that when portions of video - such as from 24-hour surveillance cameras - are public disclosed, that the video data segments have not been tampered with.
The technology could be used for the authenticaton of digital video data essentially unveiling any possible manipulations of it during storage. For example, it could be used in cases of video data captured by security cameras installed in public places, allowing the safer use of this data as evidence.
Fujitsu Laboratories developed the first technology that makes it possible to securely store and manage clips of digital video recorded over long time periods while ensuring when the data was recorded.
With the new technology, data that ensures the continuity of video segments (verification data) is associated and linked with each video segment, and is managed along with the accurate time, synchronized with the standard time obtained from an authoritative time source (time stamp). Even when video is stored in segments, this technology makes it possible to ensure the continuity of the video data segments by ensuring that no data has been erased or tampered with, thereby enabling secure subdivision and management of long-duration digital video that is enabled for digital verification.
Moreover, the technology makes it possible to extract only the desired portions of the video which for example can be used as evidence from surveillance cameras or for public disclosure, without invading privacy.
In addition to applications in the surveillance market for storage, archiving, and utilization of video, Fujitsu Laboratories is also targeting applications in the video verification/tracing business, such as enabling detection and tracing of tampered portions of video.
Details of the new technology will be presented at the Information Processing Society of Japan's Computer Security Group (CSEC) conference to be held in Fukuoka, Japan from July 24 to July 25. |
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