Based Digital Signature System

Human beings have entered into the information era with the development of computer and network technologies; Thus, the security problem of information has become the fundamental matter. The modern cryptography is the kernel technique of information security. The digital signature is one of main researches in modern cryptography, and it cannot be substituted by other techniques in information security, including authentication, data integrity, and non-repudiation. Digital signatures have many applications in electronic commerce and electronic government, etc.First, this paper introduces the research background and meaning of the digital signature. Then it introduces systematically the principle of the digital signature and relevant technology, including cryptography technology, signature algorithm, one-way Hash Function and digital certification etc. To understand the course of the digital signature more profound, it realize the simulation of the digital signature under the environment of PC by using the relevant contents of Windows and Java security. Finally, it is the summarization of the paper.