The paper proposes an approach to content disseminationthat exploits the structural properties of an ExtensibleMarkup Language (XML) document object model in order to providean efficient dissemination and at the same time assuring contentintegrity and confidentiality. Our approach is based on thenotion of encrypted postorder numbers that support the integrityand confidentiality requirements of XML content as well as facilitateefficient identification, extraction, and distribution of selectedcontent portions. By using such notion, we develop a structurebasedrouting scheme that prevents information leaks in the XMLdata dissemination, and assures that content is delivered to usersaccording to the access control policies, that is, policies specifyingwhich users can receive which portions of the contents. Ourproposed dissemination approach further enhances such structurebased, policy-based routing by combining it with multicast in order to achieve high efficiency in terms of bandwidth usage and speedof data delivery, thereby enhancing scalability.
Our dissemination approach thus represents an efficient and secure mechanism foruse in applications such as publish–subscribe systems for XMLDocuments. The publish–subscribe model restricts the consumerand document source information to the routers to which theyregister with. Our framework facilitates dissemination of contentswith varying degrees of confidentiality and integrity requirementsin a mix of trusted and untrusted networks, which is prevalent incurrent settings across enterprise networks and the web. Also, itdoes not require the routers to be aware of any security policy inthe sense that the routers do not need to implement any policyrelated to access control.Index Terms—Encryption, Extensible Markup Language A New Model For Dissemination Of XML Content
The main problem in the existing system is the content dissemination. Data that a consumer is not allowed to access but belong to a complete data set is called extraneous data. Flow of extraneous data may leak information to the customer, which is a major disadvantage to the publisher. The data must be transferred in a secure manner.
The problem of content dissemination in a web setting has been investigated and various dissemination techniques have been proposed since the transformations and growth of web networks into more dynamic frameworks than just a passive repository of content as well as the increase in the ubiquity of services have contributed to the significance and complexity of this problem.
The evolution of an Extensible Markup Language (XML) and its influence on Data Models toward XML-ization has made the Document Object Model (DOM) a standard for content representation. DOM is the commonly used model for representing XML based Language and DOM organizes data as a rooted tree.