Research On Component Description And Retrieval Method In Intelligent Security Defensive Software

With the development of the network technology and the enlargement of the network application, the problem of the network security is more and more serious. The promotion of information filching technology, a variety of attack means and typical characters such as distribution and dynamic presented by attack forms put forward severe challenges to the network security. But most of the traditional security products mainly exist disadvantages including solidified structure, single function and lacking in abilities of self-correcting and cooperativeness, so it is difficult to solve network security problem effectively on the whole. It has become an important choice to develop intelligentized security protecting system to safeguard network security.In allusion to the insufficiency of the traditional security defensive software, combining with the system model of the Intelligent Security Defensive Software (ISDS), this paper introduces the component technology and dynamic reconfiguration technology into the ISDS, designs dynamic reconfiguration mechanism of the ISDS, and carries out thorough research on the component description and component retrieval method in the mechanism. The detail works are as following:1. By having a thorough research on ISDS and combining its system model, this paper introduces the component technology and dynamic reconfiguration technology into the ISDS, designs reconfiguration mechanism consisting of four stages which includes component description and organization, sensing information acquirement and analysis, function component retrieval and system reconfiguration. From the mechanism, ISDS can adjust its behavior dynamically, which makes security defense realize the traits of dynamic and flexibility.2. For dynamic reconfiguration of the ISDS, function component description and organization can provide resources which have full element, clear description and well classification. Combining to the requests of the component description of the ISDS, this paper classifies the components by facets comprising component form, application environment, application area and component function, describes static attributes, interface action, organization information and resource location information of the component comprehensively by introducing the XML language. From doing this, it not only can provide uniform description for different component model, but also offer effective support for component retrieval in reconfiguration mechanism.3. Components based on faceted description can convert into faceted tree, meanwhile, facet, sub-facet and terms appeared in the course of query can generate a component query tree. So, on the basis of faceted classification and combining with tree matching thought, the thesis detailed elaborates retrieval algorithm based on faceted classification, improves path matching algorithm by introducing layered node labeling method that enhance the efficiency of component retrieval.4. The scheme of realization is designed, the component retrieval system is carried out and the efficiency of the retrieval algorithm is tested.In this paper, the system model and reconfiguration mechanism of the ISDS are improved, and the emphasis is laid on the study of the component description and retrieval, which accumulate a certain theory and technology for realization and farther research of the ISDS.