Through extending PMI(Privilege Management Infra- structure),DPM model is realized. In conclusion,it proposes a practical scheme for the authorization and privilege management in multi-application and multi-domain context.

• 通过对PMI 授权管理构架进行扩展,实现了 DPM 模型,为多域多应用环境下的安全互联提出了一个实际的解决方案。