摘要： 提出了加密XML 文档的一种新策略，使用户从编写复杂的XML 文档加密算法中解脱出来，而只需要将加密文档的策略，采用文中定义的XML 格式规定，编写“加密策略描述”文件，然后将该文件提交给加密服务程序，后者根据前者所描述的加密策略，自动实现对XML 文档的加密处理。与传统的通过编程实现XML 文档加密的方法相比，方法在不失灵活性的同时，更加简单高效。

关键词: XML；加密；信息安全

Abstract: This paper proposes a novel strategy in encrypt XML documents. Users are only required to present an encryption strategy description(ESD) file to the encryption service program, which performs the task of encryption automatically according to the strategies described by the ESD file. Compared to the conventional method by which encrypts a XML document through programming, the one introduced in this paper is more efficient with little loss in flexibility.

Key words: XML；Encryption；Information security