Research And Implementation Of Electronic Signature Based On USBKey System

With the in-depth application of information technology,especially the computer network technology in each field,the office automation has already become a kind of trend and developing direction,the electronic official document has already substituted the traditional official document paper,which has been more and more important in official business.the question how to guarantee the security of the electronic official document with bringing convenience seems urgent day and day.Electronic seal signature technology has been put forward under this background,and this technology becoming a difficult point in the field of information security and computer application.USBKey is the hardware equipment with a USB interface.There is a built-in intelligent card chip offers safe protection from the system and hardware aspect directly, we can make the safety of the key information's security which stored in the USBKey.With the excellent memory and cryptology performance of USBKey,we can make it as the carrier of certificates and private key in digital seal syetem to offer affective assurance uniqueness and the security for user.In the text,we study the Multiple-signature,combine ActiveX technology and relevant knowledge of cryptography,we design a new electronic seal system.Our reseach is helpful to come true and use the electronic stamped signature,and it has a higher practical value.The paper has six parts. The first part of this paper introduces the background and significance of the project and the present situation of electronic signature technology research at home and abroad. In the second part,we introduce the related cryptography, middleware technology, digital signature technology, USBKey technology and PKI technology,which have offered excellent support for the reseach and development of applation. In the third part, we point out the three shortcoming of the traditional electronic signature system. According to the deficiency in an electronic signature, solve problems, in combination with the safety and ActiveX control USBKey, and application of digital signature technology, we designed the new solution. The fourth part, on the basis of analyze the electron seal signature function demand,we divide the whole system into there pieces of module:Seal making and management the module,detail signature & authentication module,Word insert module. In the fifth part, we provide particular presentation to realization of each module in the design plan. In the sixth part,we combine the actual effect of official document circulation system showm the electronic seal signature system.