Technique of Digital Signature and Its Implementation in Java

With the rapid development of Internet and E-commerce, more need to be thinked about in network information security, technique of digital signature plays an important role in guaranteeing the integrity, confidentiality and undeniability of data. The process of digital signature technology and public key encryption system were introduced, and a way of implementing digital signature technology in Java by importing control of third party and combining the way of digital signature of Java security API was given.