The Design and Implement of Electronic Signature based on Word
Abstract
Along with the deep application of the computer network and information technology in so many fields in society, the OA (Office Automation) is going to be used at the government in a few days. How to guarantee the legitimacy, unique, traceability and avoiding being illegal copied of the electronics official document is a difficult problem, which is necessary in our society. Digital seal technology is brought forward in this background, and it is a hot and difficult point to be reseached.Though rapidly rising electronical government affair puts forward highly requitement of security of the electronical official document, the technologies and theories of digital seal system which can meet the security necessary have not been solved yet.
Assuring the inteality of the electronical document and the non-repudiation of the signeris a kernel security problem, which must be solved in digital seal system, and is a base of application. Aiming at the problems, the paper firstly compares with the effect of the digital seal and the traditional seal, draws out that the traditional seal's law effect in the electronic
information system may be replaced by the digital seal. After analyzing the current civil and
foreign technology, we bring out the "Digital Signature Seal" system model and common digital seal system's implementation scheme, analyze the key technologies, such as: hash, digital signature , which will be used in digital seal system. Afterward, the paper puts forward an example of digital seal system implemented on the MS-Word application. Finally, we evacuate the digital seal system and point out some potential directions of research.
Keywords: Digital Seal, Digital Signature, Water Marking, Certificate
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