基于对Cao-Li公钥密码系统的分析和修改

An Analysis and Modification Based on Cao-Li Public Key Cryprosystem

指出Cao Li公钥密码系统会由于某些参数选择而导致系统的安全问题;利用背包系统对Cao Li系统的改进进行改进,解决原有系统的参数依赖性问题.

It is pointed out that improper parameter selection of CaoLi cryptosystem will cause security problem. Next, give a partial cryptanalytic method to attack CaoLi cryptosystem. Finally, a new matrix cryptosystem is given based on CaoLi cryptosystem and knapsack problem.