基于代理签名机制的DRM系统许可授权协议

Access Granting Protocol of DRM System Based on Proxy Signature Scheme

为解决越来越多的用户使用数字版权管理(DRM)系统购买电子产品而导致的系统中证书服务器在颁发证书时出现的系统瓶颈问题,基于代理签名技术的原理,设计了一个由多个签名服务器组成的DRM系统,并在此系统上设计了一个许可授权协议.由于多个签名服务器参与负载分担,保证了服务器负担的降低以及系统运行的稳定.文中还通过数学的方法证明了在增加代理签名服务器的前提下,系统整体安全性不低于单签名服务器系统的安全性.

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.