Secure XML labeling for efficient XML content dissemination

XML is the commonly utilized content specification format for data interchange over the Internet. In Publish/Subscribe model, producer is the source for an XML document and disseminates the XML content to the consumer using a mediator called publisher. Producer labels the XML document and defines access control policies for the consumers. Securely labeled XML document are encrypted and sent to the publisher with consumers access details. Encryption is used to provide confidentiality and integrity for XML content dissemination. Consumer queries the publisher for their accessible content. Here, XML label plays a vital role which locates the XML content uniquely. The objective is to design a secure label that has to identify each XML tag uniquely, should not reveal any additional information about the source XML document. Also, XML label size should be optimal with less label generation time. We proposed a secure and efficient XML labeling scheme called Secure Dewey Coding (SDC) that prevents information leak and assures minimal memory space and time. The implementation results of the proposed XML labeling scheme showed that the XML label size has been reduced to a maximum and an average of 68% and 59% respectively and the generation time also decreased significantly.