Network Encryption Systems Analysis And Design Of The E-mail Data

Public Key Infrastructure has been widely used in the past few years, as an credible and efficiency system integrated encryption. This document using traditional software technology successfully made a SSL/TLS encrypted mail data capture and analysis software MailKeeper, which is a alternant software based on Linux operating system of enterprise server. Not found any similar software system in domestic yet.At first, we introduced some contexts of PKI system and related technology, including SSL protocol's working principle, some applications and related conceptions of electronic certificate, and also the encoding arithmetic they used. Second, we researched the technical processes of SSL/TLS protocol and the corresponding implementations, discussed the industry standard TLS criterion RFC2246 deeply, and also the TLS encoding process and the data structure of handshake messages for establishing encoding channel and the main arithmetic. The third thing we have done is to establish the MailKeeper's topology frame. Designed the whole system's topology and illuminated the constituent. The forth thing we have done is following the traditional software processing flow to develop this system's lifecycle. Including the system's requirement analysis, concept designing, detailed designing and the system implementing and testing. The concept designing including the data processing analysis, module function designing, system user designing and the GUI function designing. The detailed designing including the main module's flowchart designing the data flow designing. At last, the system implementation and testing provided some notes need to consider and validated that the MailKeeper can basically meet the moderate mail capture and decoded demand.Synthetically, SSL/TLS as a general used web data encrypting protocol, it has a very obviously advantage. Of course, as we have limited technique, the software exist many bugs, and many works need to be finished. We hope this document can offer some edification to subsequent researcher.