Abstract
The digital content distribution businesses satisfy people's requirements for the rich and colorful digital content and also promote the user experience. These businesses also make an increasing profit for content makers, content providers and network carrier, and will be a critical position in the future business value chain. However, copyright piracy still doesn't solve very well and results in great loss for content providers. The digital content has the characteristics of easy copy and distribution, therefore, digital rights management has been the key technology to protect intellectual property of digital contents, control their dissemination and usage in digital content Web issue. First, synthetically analyze the disadvantages of typical digital rights management framework. Second, given a series of the problems in the modern system, digital rights management system based on smart card is proposed. Making use of the characteristic of smart card itself, the new framework will be mobile, secure and off-line. Following this, a set of digital management protocols are designed, including license acquisition protocol, usage, update protocol and authentication. The new system's framework, module structure, system design and realization are described. At last, the new system's characteristic is analyzed and is proved to be secure and efficiency.
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