網(wǎng)格環(huán)境中的信任問(wèn)題是網(wǎng)格計(jì)算發(fā)展過(guò)程中必須解決的一個(gè)重要問(wèn)題。網(wǎng)格實(shí)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(guān)注的是更廣泛意義上的可信性問(wèn)題，具有動(dòng)態(tài)性和不確定性等特點(diǎn)，實(shí)體可以根據(jù)彼此之間的交互經(jīng)驗(yàn)動(dòng)態(tài)更新實(shí)體間的信任關(guān)系。而可信計(jì)算技術(shù)是為應(yīng)對(duì)計(jì)算機(jī)安全問(wèn)題而提出的一種底層的、整體的解決方案。該文以可信計(jì)算平臺(tái)為基礎(chǔ)，提出了一種網(wǎng)格環(huán)境中的行為信任模型，并對(duì)行為信任進(jìn)行量化評(píng)估，最后對(duì)該模型中的幾個(gè)關(guān)鍵問(wèn)題進(jìn)行了分析。
關(guān)鍵字：網(wǎng)格；行為信任；聲譽(yù)；可信計(jì)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