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Digital Video Scrambling Method using Intra Prediction Mode of H.264  

Ahn Jinhaeng (School of Electronic Electrical Engineering, Sungkyunkwan University)
Jeon Byeungwoo (School of Electronic Electrical Engineering, Sungkyunkwan University)
Publication Information
Abstract
The amount of digitalized contents has been rapidly increased, but the main distribution channel of them is Internet which is easily accessible. Therefore 'security' necessarily arises as one of the most important issues and the method of protecting contents becomes a major research topic as much as data coding techniques. In recent years, many developers have studied on techniques that allow only authorized person to access contents. Among them the scrambling method is one of well-known security techniques. In this paper, we propose a simple and effective digital video scrambling method which utilizes the intra block properties of a recent video coding technique, H.264. Since intra prediction modes are adopted in H.264 standard, it is easy to scramble a video sequence with modification of the intra prediction modes. In addition to its simplicity, the proposed method does not increase bit rate after scrambling. The inter blocks are also distorted by scrambling intra blocks only. This paper introduces a new digital video scrambling method and verifies its effectiveness through simulation.
Keywords
Scrambling; Intra prediction mode; Variable length coding; Fixed length coding;
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Times Cited By KSCI : 1  (Citation Analysis)
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