基于可信計算的網(wǎng)格行為信任模型研究

網(wǎng)格環(huán)境中的信任問題是網(wǎng)格計算發(fā)展過程中必須解決的一個重要問題。網(wǎng)格實體間
的信任可以分為身份信任和行為信任兩種，其中行為信任關注的是更廣泛意義上的可信性問題，具有動態(tài)性和不確定性等特點，實體可以根據(jù)彼此之間的交互經(jīng)驗動態(tài)更新實體間的信任關系。而可信計算技術(shù)是為應對計算機安全問題而提出的一種底層的、整體的解決方案。該文以可信計算平臺為基礎，提出了一種網(wǎng)格環(huán)境中的行為信任模型，并對行為信任進行量化評估，最后對該模型中的幾個關鍵問題進行了分析。
關鍵字：網(wǎng)格；行為信任；聲譽；可信計算
Abstract：The “Trust” in a grid environment is an important problem in the development of grid computing.The trust notion in grid include identity trust and behavior trust,and behavior trust which is dynamic and uncertain concerns a wider notion of trustworthiness,and entities can update their mutual trust relationship among entities dynamically based on their past transaction experiences.Trusted computing technology is is an basic,entirely solution for security problems of computer.In this paper,a behavior trust model which is based on trused computin technology in grid and a method for measuring and evaluating the behavior trust are provided.At the end,we analyse some important problems in this model.
Keywords：grid；behavior trust；reputation；trusted computing