Security problem of mobile agent system

As a basic technology of distributed computing and mobile computation, mobile agent becomes a focus of researches. Due to migration in Internet and then execution in many unknown hosts, a new security problem is presented: how to protect the moving mobile agent? and how to protect the mobile agnet being attacked by some malicious hosts? For those problems, the security problem in current mobile agent system is introduced. Security-authentication mechanism based on zero knowledge proof makes the mobile agent system running more quick and easy.Moreover the system becomes more secure.