| 摘要 |
Method and apparatus are provided wherein, in one example embodiment, an authentication scheme may be defined as part of a digital rights management policy. Authentication rules are defined for a unit of digital content whose location can be anywhere. Further, the digital rights management system may support many authentication schemes while permitted schemes can be fine tuned for individual policies and therefore for individual units of digital content. According to other example embodiments, one or more preferred authentication schemes can be added to a rights management policy. They can be either requested or required for authentication. In addition, in other example embodiments, the reader application may be informed of specific authentication schemes being demanded for a document. If none of the authentication schemes are available then the user can be informed without attempting to authenticate unsuccessfully. |
