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首页> 外文期刊>Journal of Zhejiang University Science: An international applied physics & engineering journal >Instance-oriented delegation: A solution for providing security to Grid-based mobile agent middleware
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Instance-oriented delegation: A solution for providing security to Grid-based mobile agent middleware

机译：面向实例的委派：一种为基于Grid的移动代理中间件提供安全性的解决方案

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摘要

New challenges are introduced when people try to build a general-purpose mobile agent middleware in Grid environment. In this paper, an instance-oriented security mechanism is proposed to deal with possible security threats in such mobile agent systems. The current security support in Grid Security Infrastructure (GSI) requires the users to delegate their privileges to certain hosts. This host-oriented solution is insecure and inflexible towards mobile agent applications because it cannot prevent delegation abuse and control well the diffusion of damage. Our proposed solution introduces security instance, which is an encapsulation of one set of authorizations and their validity specifications with respect to the agent's specific code segments, or even the states and requests. Applications can establish and configure their security framework flexibly on the same platform, through defining instances and operations according to their own logic. Mechanisms are provided to allow users delegating their identity to these instances instead of certain hosts. By adopting this instance-oriented security mechanism, a Grid-based general-purpose MA middleware, Everest, is developed to enhance Globus Toolkit's security support for mobile agent applications.
机译：当人们尝试在Grid环境中构建通用移动代理中间件时，引入了新的挑战。本文提出了一种面向实例的安全机制，以应对此类移动代理系统中可能存在的安全威胁。网格安全基础结构（GSI）中当前的安全支持要求用户将其特权委派给某些主机。这种面向主机的解决方案对于移动代理程序应用程序是不安全且不灵活的，因为它无法防止委派滥用并不能很好地控制损害的扩散。我们提出的解决方案引入了安全性实例，它是一组关于代理的特定代码段甚至状态和请求的授权及其有效性规范的封装。应用程序可以根据自己的逻辑定义实例和操作，从而在同一平台上灵活地建立和配置其安全框架。提供了允许用户将其身份委派给这些实例而不是某些主机的机制。通过采用这种面向实例的安全机制，开发了基于网格的通用MA中间件Everest，以增强Globus Toolkit对移动代理应用程序的安全支持。

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