Multi-modulus Matrix Theory In The Design Of Access Control And Software Registration Code

With the development of network technology, access control technology is one of the most important technologies in the information security's field and now widely receiving attention from peer scholars both at home and aboard. In this paper, researched the theory of single module linear congruence equations and multi-module linear congruence equations, and applied the multi-module linear congruence equations to access control and software registration code technology. The main achievements were as follows:(1) The solution of multi-module upper triangular linear congruence equations were given,and an access control keys-lock matching method was designed which based on this solution,this method could improve the security of computer access control system. And the numerical example was given; the numerical example could illustrate the feasibility and safety.(2) The solution of multi-modulus full rank matrix was given,and an improved Wu and Hwang keys-lock matching method was designed based on this solution. The method greatly improved the safety of access control scheme and makes the storage of lock value more random. And the numerical example was given; the numerical example could illustrate the feasibility and safety.(3) A software registration code method algorithm was designed based on the solution of multi- modulus full rank matrix. And the numerical example was given;the numerical example could illustrate the feasibility and safety.