Research on XML Data Structural-Integrity in XML Signature

With the extensive application of XML, especially in e-commerce field, XML data security has become the focus of people, which particularly shows in its structural attack specific to the location relation to elements in tree structure. Combined with the characteristics of tree structure of XML data as well as the basic features of traversing binary tree, the paper proposes a method to protect the structural-integrity of XML digital signature, so as to protect XML data element from structural attack through the basic features of traversing binary tree, and ensure the absolute location relationship among elements.