Smart Cards And Pki-based Secure File Transfer Software Design And Realization

With the development of the Internet, the Electrical Power enterprises usually to deal with their internal business through Internet services, and improve enterprise efficiency and market response in order to be more competitive. The Electrical Power enterprises often use FTP to transfer data via Internet, which may be including the confidential business information, the protection of confidential information security become one of important things must be considered to the Electrical Power enterprise's Informationization.FTP (File Transfer Protocol) is one of the services provided by the Internet, Through FTP services from the Internet, authorized users can use the computer to gain the necessary documents and the local files can also be transmitted to other computers, This is two-way transmission of documents between computers provided an effective means. But FTP Protocol itself does not provide safety and security mechanism, and now FTP security is of great practical significance.Base on study the existing network security theory and techniques and the analysis of the FTP Protocol, there are holes in FTP due to its transmission of plain data, data contents are easily tapped. A PKI and smart cards-based security scheme is presental for documents transmission, In this scheme, The client-and server do the authentication each other firstly, encrypte data transmission channel and then transfer secure documents, which significantly improved the FTP security. The design and implement of client for secure document transmission are described at the end of thesis.