Designs And Implements The Electronic Signature System Of OFD Layout Files Based On The Domestic Algorithm

With the rapid development of paperless office by the country,electronic documents utilize a lot the Internet business,like e-government affairs and e-commerce,but at the same time,there are also many safety problems,for example,the bidding documents in the electronic bidding projects shall be transferred safely,completely and secretly,which can not be stolen by other institutions.For another example,as for the inspection report issued by the inspection agency,the identity of inspection agency can be traced back and can be approved.With the development of current international situation,China also puts forward the safety product development guideline of “safe and reliable,autonomous and controllable”,it vigorously advocates use the domestic encryption algorithm,which shall use the domestic OFD layout files.According to the development need,the new generation of electronic signature product appears based on the electronic signature system of OFD layout files.The passage designs and implements the electronic signature system of OFD layout files based on the domestic algorithm.The electronic signature system of OFD layout files based on the domestic algorithm is a complex project,the passage designs and implements it in details according to the software engineering method,the main research contents and innovations are as follows:1.Describe the current status and problems of current layout files(like PDF,ODF)and electronic signature technology development,mainly expound the concept of PKI,electronic signature,OFD layout files,electronic signature and mathematical principle of domestic algorithm,the design philosophy and thought of electronic signature system,research purpose,significance and contents,the problems can be solved,market demand and industry development tendency.2.Strictly follow the software engineering,formulate the project research and development plan,formulated the demand analysis,system design and implementation,system operation and maintenance.Complete the system architecture design of signature platform,the system database design and system management function and detailed design of signature rules.Design the system architecture system and overall system architecture.Start from the business logic of signature system,analyze the demands in details and design the database relation graph.At last,design the management function and signature rules in details according to the management need of actual business.3.According to the design of electronic signature system,complete the electronic signature system based on OFD layout files.Introduce the basic software and hardware environment for system implementation and the main technical route for system implementation.Then introduce the business logic of electronic signature in details from system registration,digital certificate management,electronic signature management and other configuration functions,at last,describe the external signature of electronic signature system and signature verification service interface and invoking method from integration.4.Differing from the traditional signature products,the innovations of the passage are mainly the following aspects,(1)mainly operate the signature based on the domestic OFD layout files,complete the key word search of OFD layout file,cut display of seal on the perforation and other technical difficulties,support the single page signature,multipage signature,seal on the perforation,key word seal.transparent seal and many signature rules,and support the nested call of signature rules with flexible design and convenient integration.(2)At the same time,support the international algorithm and domestic algorithm,convenient the integration of domestic and foreign projects.(3)Flexible backstage management system configuration,support the multiple CA certificate configuration,convenient for the access of CA factories.By the application of electronic signature system of OFD layout files based on the domestic algorithm,can promote the development of paperless office in China,an solves the safety problems of OFD layout.Promote the development of domestic OFD layout file technology and the domestic algorithm business.