The Design And Implementation Of Secure E-Government System

With the fast development of IT in the world, especially the universality of Internet, the development of the E-government is becoming one of the most important realms in information. The E-government is an important part in government information , and the process of government information is a process of the E-government developing. In order to improve service ability, the Party of 16th Meeting put forward the further change at government function definitely, improves management, push forward the E-government construction. With the support of the country, the E-government made great success and the market scale extended continuously. We emphasize the safety in the E-government system construction and its movement processes. In order to ensure the E-government process, the IT-field put forward some models, such as ISSE model, and so on. The measures which ensure the safe guarantee of the E-government is a lot, such as data encrypting technique, information concealing technique, safe authentication technique, the public key infrastructure PKI technique, virus against technique, fire wall technique, Identification System technique, physics separate and the VPN etc. Among them, the leading, strengthening information safety and the Net trust building whose core is the cryptogram technique is guidance thought put forward by central office's the No.27 file. The No.27 file is important which is approved by the Party and the State Department. So, the information safety is a basic guarantee in the E-government, the nation information protection and political steady.This thesis sets out from the guarantee of E-government information safety and takes E-government system as an example which details a technique implement guarantees system. In the system, the electronics seal system program is realized. In order to solve these problems, according to other similar implement projects, I design viable electronics seal system. This thesis illustrate that the electronics seal system based on Microsoft Word is researched through numeral signature technique and numeral encrypts technique. I studied the use of the saving hardware USBKey in the electronics official seal system. Main work is as follows:1. Thorough study the E-governmental construction the guide and safeties guarantee the system relevant guide to thought the foundation up, and make actual investigation and investigate, science, reasonably a set of integrity of the E-governmental safety guarantee system.2. Study PKI, the numeral sign and Hash function deeply. All these are very important techniques in the electronics seal's development and the design system.3. Put forward the model of the ISSE, and to take this for guide model, with the one Province E-governmental as an example, set up the whole province political net information safety guarantee system, detailed design a technique implement guarantee system that compares the integrity.4. Have Study and designed a simple system of electronic seal based on PKI. Study one based on electronic seal system of PKI basic composition and function in theory mainly laid the theoretical foundation in order to develop the system of electronic seal based on Word.5. Have designed and developed the system of electronic seal based on Word. Realize the electronic seal on the Word file, including Digital Signature, Hash function, the analysis of Word file structure mainly, use of the programming interface of Word, etc... This is a focal point of the thesis.