The Design and Implementation of an XrML Validator
XrML验证器的设计与实现

XrML is a right expression language which based on XML. It describes the relative right, condition and so on when you are using a digital works. XrML currently has become an international standard and is getting more and more popular. This paper designs and implements an XrML validator, and it can be called directly by those systems which need the functionality of DRM. The advantage of this validator is that it' s developed using C + + , so it' s very compact and can be used in such fields as embedded system.