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For interactive TV (ITV) services in converged network, the DVB-based DTV and the IP-based IPTV coexist in a single dual mode set-top box (STB) and the traditional one-way DVB-CA cannot be adapted to the variation. In this paper, a simplified and secure conditional access scheme based on the simplified double layer is proposed to realize authentication and access control between servers and STBs....
Broadcast encryption schemes are suitable for one-way content distribution and protection applications.However, most of the related papers are from the theoretical point of view, and there is something useful for implementation being overlooked. In this paper, we introduce the pay-TV system as a concrete implementation of broadcast encryption schemes, and simulate the transmission performance of four...
P2P content sharing is often blamed for copyright infringement, making the establishment of content security technologies an urgent need. A PCP (P2P-based content protection) system is proposed in this paper. The system is based on a trust model that focuses on content security, rights management and access control in P2P network. Encryption, digital watermarking, and packaging technologies are adopted...
In broad TV network, the broadcasting will coexist with interactive services in a single set-top-box (STB) device and the traditional unidirectional conditional access system (CAS) in DVB can't be adapted to the variation. The dual-CAS is designed based on a double layer security scheme proposed in this paper to implement the authentication and access control, key updates between servers and STBs...
In this paper, we introduce a novel way to solve the tradeoff problem about communication/storage/computation overhead of broadcast encryption scheme. We construct a new scheme based on subset difference (SD) scheme, use concept of RSA accumulator and the idea of separating the user-side device into different function parts, take advantage of the public device's functionality, minimize the storage...
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