Fault-tolerant Authentication and Group Key Management in Mobile Computing
نویسندگان
چکیده
Survivability and secure communications are essential in a mobile computing environment. In a secure network, all the hosts must be authenticated before communicating, and failure of the agents that authenticate the hosts may completely detach the hosts from the rest of the network. In this paper, we describe two techniques to eliminate such a single point of failure. Both of these approaches make use of backup servers, but they di er in the way they are organized and deployed. We evaluate our proposed architectures with a prototype system that we built. We also identify various security threats and performance issues in group (multicast) communications in mobile computing environments. We propose a scheme for e cient key distribution and management using key graphs to provide secure multicast service.
منابع مشابه
Modeling Fault-Tolerant and Secure Mobile Agent Execution
The reliable execution of a mobile agent is a very important design issue in building a mobile agent system and many fault-tolerant schemes have been proposed so far. Security is a major problem of mobile agent systems, especially when money transactions are concerned . Security for the partners involved is handled by encryption methods based on a public key authentication mechanism and by secr...
متن کاملارائه یک رویکرد همانند سازی شده عامل محور در اجرای یک الگوی کد متحرک مطمئن
Abstract Using mobile agents, it is possible to bring the code close to the resources, which is not foreseen by the traditional client/server paradigm. Compared to the client/server computing paradigm, the greater flexibility of the mobile agent paradigm comes at additional costs as well as the additional complexity of developing and managing mobile agent-based applications. Such complexity ...
متن کاملByzantine Fault Tolerant Authentication
A Byzantine fault tolerant public key infrastructure is presented. It aims to fulfill the authentication requirements of large distributed systems consisting of semi-trusted parties. The distributed trust model does not demand the existence of predefined trusted parties and provides authentication if more than a threshold of the participants are honest. A voting based protocol implements distri...
متن کاملModeling Fault Tolerant and Secure Mobile Agent Execution in Distributed Systems
The reliable execution of mobile agents is a very important design issue in building mobile agent systems and many fault-tolerant schemes have been proposed so far. Security is a major problem of mobile agent systems, especially when monetary transactions are concerned. Security for the partners involved is handled by encryption methods based on a public key authentication mechanism and by secr...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
عنوان ژورنال:
دوره شماره
صفحات -
تاریخ انتشار 2000