Layered Access Control Schemes on Watermarked Scalable Media

Abstract

Intellectual Property (IP) protection is a critical element in multimedia transmission and delivery systems. Conventional IP protection on multimedia data can be categorized into encryption and watermarking. In this paper, a structure to perform layered access control on scalable media by combining encryption and robust watermarking is proposed, implemented, and verified. By taking advantages of the nature of both encryption and watermarking, copyrights of multimedia contents can be well protected and at the same time, multiple-grade services can be provided. In the summated examples, we assume a scalable transmission scheme over the broadcasting environment and use it to test the effectiveness of proposed method. When the embedded watermark is extracted with high confidence, the key to decrypt the next layer can be perfectly recovered. Then, the media contents are reconstructed and the copyrights are assured. The application examples also demonstrate the practicality of the proposed system.

Damageless Information Hiding Technique Using Neural Network

“…Therefore, main concern in this research area has focused on imperceptible watermark. Also, research that relates to image retrieval technique and encryption is recently seen [2] [7].…”

Recent Advances in Watermarking for Scalable Video Coding

“…Intellectual Property (IP) protection is a critical element in a multimedia transmission system (Chang et al, 2004;Chang et al, 2005). Conventional IP protection schemes can be categorized into two major branches: encryption and watermarking.…”

“…Conventional IP protection schemes can be categorized into two major branches: encryption and watermarking. The content protection can be increased when combining the encryption and the robust watermarking, as proposed and implemented by (Chang et al, 2004;Chang et al, 2005). By taking advantage of the nature of cryptographic schemes and digital watermarking, the copyright of multimedia contents can be well protected.…”

“…The scalable transmission method over the broadcasting environment for layered content protection is adopted by (Chang et al, 2004;Chang et al, 2005). As a result, the embedded watermark can be extracted with the high confidence and the next-layer keys/secrets can be perfectly decrypted and reconstructed.…”

Audio scrambling technique based on cellular automata

“…The techniques that use scrambling have many applications; for example, Fingerprinting is one of the effective means of copyright protection of multimedia transmitted to massive users using the multicast method [2], the development of robust data hiding system helps more technologies find new and promising applications [3], and watermarking is one of the methods used in Intellectual Property (IP) protection which is an important element in multimedia transmission and delivery systems [4].…”