Grid和P2P混合环境中一种基于信任的资源搜索机制  

Trust-based Resource Searching Mechanism in Grid and P2P Integrated Environment

作　　者：周金洋[1] 杨寿保[1] 郭磊涛[1] 王莉苹[1] 

机构地区：[1]中国科学技术大学计算机科学技术系,合肥230026

出　　处：《计算机科学》2005年第11期27-30,共4页Computer Science

基　　金：国家自然科学基金(编号60273041);国家863计划(编号2002AA104560)的资助

摘　　要：Grid和P2P两种分布式计算模式中的资源搜索算法均假设节点提供可靠的资源,但Grid和P2P混合计算环境的动态、异构、自组织等特点使得一些节点存在冒名和提供虚假服务等行为。本文对基于经验和最好邻居搜索机制进行改进,引入信任因子,提出了基于信任的资源搜索机制。该机制有效抑制了欺骗行为,提高了资源搜索的可靠性和安全性。The resource searching algorithms in distributed computing environment of Grid and P2P are based on the assumption that reliable resources are provided. But the dynamic, heterogeneous and self-organizing features of the grid and P2P integrated computing environment have indulged some malicious behaviors, such as imposture and providing pseudo services. In this paper, the search mechanism based on experience and best neighbor is improved, the trust factor is introduced and the resource searching mechanism based on trust is put forward. The new searching mechanism can effectively improve the reliability and security of searching information through the experiences.

关 键 词：资源搜索 网格 对等网络 信任 信任值 搜索机制 GRID 计算环境 P2P 混合 

分 类 号：TP393.09[自动化与计算机技术—计算机应用技术] TP393.092[自动化与计算机技术—计算机科学与技术]