Access Control and Labeling Scheme for Dynamic XML Data

Recently XML has become an active research area. In particular, the need for an efficient secure access control of dynamic XML data in a ubiquitous data stream environment has become very important. But role-based prime ´number labeling (RPNL) has some problems. For example, The RPNL does not know a relationship between nodes such as ancestor- descendant relationship. The RPNL does not take update operation of an XML document into consideration. We propose a new labeling scheme for efficient secure access control method in dynamic XML data stream. The e-RPNL supports the process of dynamic XML data without re-labeling existing labels. We have shown that our approach is efficient and secure through experiments.