Journal of South China University of Technology (Natural Science Edition) ›› 2008, Vol. 36 ›› Issue (9): 55-58.

• Computer Science & Technology • Previous Articles     Next Articles

Access Granting Protocol of DRM System Based on Proxy Signature Scheme

Deng Yu-qiao  Du Ming-hui   

  1. School of Electronic and Information Engineering, South China University of Technology, Guangzhou 510640, Guangdong, China
  • Received:2007-10-25 Revised:2008-01-03 Online:2008-09-25 Published:2008-09-25
  • Contact: 邓宇乔（1980-），男，博士生，主要从事密码学、安全电子支付、数字版权管理系统研究． E-mail:yuqiao．deng@scut．edu．cn
  • About author:邓宇乔（1980-），男，博士生，主要从事密码学、安全电子支付、数字版权管理系统研究．
  • Supported by:

    广东省自然科学基金资助项目（05006593）

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Abstract:

In order to solve the bottleneck problem of the signing server due to the purchase of electronic products via DRM systems used by more and more users, a DRM system consisting of multiple signing servers is designed based on the principle of proxy signature, and an access granting protocol based on the system is presented. As there are multiple signing servers to share the burden, the burden on each server is lightened and the stability of the system can be guaranteed. Moreover, it is mathematically proved that the integrated security of the multi-signing server system is not less than that of the single-singing server one.

Key words: DRM system, information security, discrete logarithm, proxy signature, access granting protocol