Embedded Microprocessor-based Electronic Signature System Of Research And Development

This project researches a kind of Electronic Seal System Based on Embedded Microprocessor,which is an application of Public Key Infrastructure(PKI).The electronic seal system based on an embedded microprocessor takes advantage of PKI public key theory and technology,while combining the secure and portable USB Key which supports the USB interface as the carrier of the electronic stamp as well as the secure middleware technology,to establish a fundamental infrastructure that offers secure services.PKI technology is the core of the electronic seal system information security technology.The electronic seal system basically adopts PKI Non-symmetric Encryption Algorithm,namely,it adopts different encryption keys and decryption keys avoiding that a third-party would steal the keys and find out the original message.This thesis has designed the fundamental structure and the specific function parts.After that it developed a webpage electronic seal system used on the form,in order to verify the feasibility of the electronic seal system designed.The webpage electronic seal system is created by the COM groupware and ActiveX groupware technique,combining the Digital Certificate distributed by CA and the smart card USB Key,to implement the stamping on the form.Among this,the seal-making system,the seal management system and the stamping client are developed and debugged on the Visual Studio 2005.The seal controls are developed and debugged under the Visual C++,while the background data are created by SQL Server2000.The system offers protection for the development of e-commerce and e-government,the popularity of online non-paper office work as well as the internal paper circuits inside a company of an organization,especially for the highly-confidential documents.These are also the main application fields where the E-seal system will be used.