Research And Realization Of Information Security Technology In Daqing Oilfield Intranet

Rapid development of IT today has led human beings into an information society. The economic system more and more relies on information resources, information technology, and the information industry. In the information society, information has become a valuable resource, but security problems that come with the expansion of the Internet are increasingly serious and noticeable. Now network security is a vital strategic issue of national security.As the biggest state-owned enterprise, Daqing Oilfield Company Ltd. (DOCL) has basically completed the construction of its own large-scale intranet (DQnet) that supports sharing of internal information. The intranet covers a wide area, holds a large number of users, includes many complicated application systems, and needs high-level security. How to ensure confidentiality, authenticity, incontestability, and integrality of shared information is a practical and important subject. Setting up a security system for Dqnet is necessary so that the intranet can run smoothly and safely transfer all data for production activities.This article describes the situation of information security theory and technology, and discusses the theories of CA, Information Encryption, and Public Key System. Considering the practical requirement for information security in Dqnet, the author provides a framework for an information security system for oilfields like Daqing, and has developed several modules. In addition, interfaces and implementation methods of Web, Domino, etc. are analyzed in detail.The study of information security for oilfield intranets will ensure that information applications operate normally, and push forward enterpriseinformatization.