Study On Digital Dignature Technology In Database Information Transferring Based On C/S Structure

In the recent years, network has been infiltrated into human beings' lives because of its convenience and inexpensiveness, and has become an important method of communication. Not only have all these brought convenience that has been never seen before to human beings, but also have brought new challenges. That is to say, network requires more security on information. Data's authenticity and prevent-deny in network security have become more and more important.Digital signature technology, which ensures data source has not been fabricated and its input cannot deny, has been applied in common file system popularly. Traditional manual signature has been replaced by digital signature, but the file digital signature system cannot be applied in database system easily. Therefore, it is necessary to present a digital signature structure that is aimed at database information transferring system.First, this thesis introduces its research background and some concepts concerned with cipher. And then classifies the encrypt algorithms, emphasizes on several algorithms and their theories in common use. After that, this thesis introduces the concept of digital signature based on the encrypt algorithms. The goal of this thesis is not only to analyze the main technologies that are involved in Java security system and database C/S Structure, but also to develop some whole programs on the relative difficult points in technology by Java security API. And then, this thesis presents a. digital signature scheme in database information transferring system based on Java security technology.