Efficient Secure Labeling Method under Dynamic XML Data Streams

In this paper, we propose an improved method of an efficient secure access control labeling under dynamic XML data streams environment. The proposed method enables an efficient secure real-time processing of a query in a mobile terminal and supports insertion of new nodes at arbitrary positions in the XML tree without re-labeling and without conflicting. Although some researches have been done to maintain the document order in updating, the main drawbacks in the most of these works are if the deletion and/or insertion occur regularly, then expensive re-computing of affected labels is needed. Therefore we focus on how to design an efficient secure labeling scheme for XML trees which are frequently updated under dynamic XML data streams.