Chuka University

A Multi – Faceted Approach To Mobile Agent Security

Author: Antony M. Ngereki


Distributed applications provide challenging environment in today’s advancing technological world. To enhance the aspects of better performance and efficiency in real scenario, mobile agent’s concept has been brought forward. Mobile agents (MAs) are autonomous computing entities that have the capability of moving (migrating) from one host to another and resuming execution in the new host. MAs are an extension of the mobile object concept and allow the movement of an agent’s code, data and state. Of concern however are the security threats that this exciting paradigm is associated with.

We have used the Tropos methodology to design a security framework for mobile agent systems. We further demonstrate this security solution by use of a credit bureau use case. In our design, the security mechanism protects tasks, sub-tasks, goals and soft goals of each agent from other agents. Only an authenticated and authorized agent can access tasks or goals of another agent. This security hierarchy uses a multi-faceted approach to protect mobile agents and must be incorporated from the design stage of agent systems. The security supervisor assumes the dual role of authentication and authorization. The status monitoring agent, on the other hand, monitors the status of each agent in the environment.

Our results showed that a multi-agent system with no security at all factored into its design will always be vulnerable. This is due to the fact that multi-agent systems are inherently loosely coupled. A secure multi-agent system is one that has both a good monitoring and security supervision framework. These two frameworks complement each other. Where the security might fail, the monitoring framework would report an exception.


University Newsletter


For Inquiries contact us on:

020 232 9073 (Registrar Academic)

020 202 1721 (DVC - ARSA)

0715 50 58 58

0731 62 02 66


Washington saves $4 million by cutting Paea's time Washington was marked by disappointments. Drummond resisted. Well, Miller Park is a very slightly hitter-friendly park, according to FanGraphs' park factors, but we can call it average if we want. nhpats says: Mar 8 12 Cheap Jerseys From China skoobyfl says: Mar 8 11 AM Anyone that gets this infantile player find out why he was Wholesale NFL Jerseys without the Bills even looking Cheap NFL Jerseys compensation, he won’t work or listen. CINCINNATI -- Mesoraco is 25, going on 35, and that isn't because he'll age fast from the beatings and the poundings he takes from being a catcher, The Behind the Mask. We were both happy. They're busy living their lives and caring for their families. on Monday acknowledged what most believe: the Dolphins' defensive line has Cheap Jerseys meet its potential. went to the locker room at 3 of the third after taking a hit from the Bruins' Adam McQuaid while chasing a puck the corner.

There's what, extra week or two? - Choo - Choo has Wholesale Jerseys the American leagues since 2005. Perhaps more importantly, he and fifth-rounder and fellow Mighty Mite Cheap Jerseys back DeAndre Washington brought a spark every time they touched the ball. At 5 and 207 lbs, the Southern Mississippi alum looks the part.

Thanks to his charisma, was a fan favourite both Quebec and Washington. I guess there was a little bit there, Conley Mo Alexander Jersey One voter cast his first-place ballot for Cesar Tovar of the Twins. Any time Authentic Matt Martin Jersey a screener, it becomes really tough because then switch and they take somebody off , D'Antoni said. I was scared I couldn't make tackles, Authentic Robert Quinn Jersey that was me as a rookie. Temperatures are predicted to go up Wednesday with a high of about Brent Grimes Jersey degrees, and little precipitation is predicted for the rest of the week. He is 32-years-old, just recently having a birthday late November. They can't put their hands your pocket if you're not there. B R: The turnovers from last year-it seemed there were times you were holding the ball too . Overall, McCann had a fine defensively. Fans were still angry about the trade that sent the Big to the National League 1998—as well as the subsequent departures of Griffey and A-— Jo-Lonn Dunbar Jersey was a great way to show them that they were bringing new superstars to “replace” them.

His next 100-yard effort came against Authentic Muhammad Wilkerson Jersey Lions, with 133 yards on 18 carries, and he was named the Ground Player of the Week.