Study of one-way hash function to digital signature technology

Digital signature technology is very important in today's e-commercial environment. To ensure the security of Digital signatures, One-way hash function has recently been widely used. In this paper, a new method of constructing the one-way hash function is proposed on the basis of chaotic theory. Firstly, digital signature technology is introduced. Secondly, after a simply explanation of one-way Hash function, the process and algorithm of applying the He non-like map to the construction of a one-way hash function is depicted. And then, the Security of the Hash function obtained is analyzed. Finally, this method is exemplified by an application case, which indicates that this novel function is sensitive to initial conditions and irreversible, simple to construct, and easy to practice, thus applicable to digital signature field of E-commerce security.