摘要
網格計算的發展，持續朝向網格經濟的趨勢前進，其目的在提供資源擁有者分享資源的誘因，以及控制資源使用者存取資源之成本。若資源管理機制能有效率地運作，即可自然形成市場供需的平衡。正因為此發展趨勢，網格計算中資源使用者如何付出成本給資源提供者以取得資源的使用，將隨著網格應用日增，而需要符合不同需求的付款機制。 有鑑於目前網格計算中的付款機制，相關文獻之討論仍相當缺乏，故本論文嘗試提出一種適用網格計算環境，並結合行動代理人的付款機制。此付款機制有別於現存的實現網格經濟之作法，不以資源存取後衡量使用量作為計價依據，而是結合行動代理人於集中市場的資源協商機制，以買賣雙方達成協議之價格與資源存取條件，完成資源提供者與資源使用者之間的交易。本研究之系統設計，以使用電子錢幣為工具的多重代理人付款系統為基礎，修改其代理人之間溝通的流程，使得付款代理人於付款後，得以存取網格服務提供者所提供的服務。由於使用電子錢幣作為付款工具，並結合盲簽章技術，本付款機制可以符合需要執行匿名服務存取的使用者需求。配合行動代理人移動至網格服務提供者端，進行付款等溝通動作，以及使用環境金鑰加密法保護代理人所攜之電子錢幣，可增加存取服務之過程的安全性，降低安全性風險以及溝通成本。本研究並對系統設計之流程，以分子生物學求最大共同子序列問題作為實作目標，進行重點實作，提供可行性與效能之參考。
並列摘要
The trend of Grid computing is towards economic-based Grid computing continuously. The purpose of economic-based Grid computing is providing the resource owner the motivation of sharing its resources, and providing an environment in which the cost of accessing the resources could be evaluated in user-centric way. It is very important to develop mechanisms of how resource consumers pay the resource providers for accessing the resources because of this trend. Due to the lack of related work towards the payment system in the Grid environment, this thesis aimed at designing a payment system which can be applied to Grid environment based on multi-agent payment system. The special feature of this payment system is that it’s based on the agreement reached by the Grid Service Provider and the Grid Service Consumer. First of all, agents of GSP and GSC communicate at the centralized market and finally reach the service agreement. Agents move back their owner’s host and start the payment process designed in this thesis after they reach the service agreement. Agents of GSP and GSC complete the transaction according to their service agreement. This means that how much GSC should pay GSP for the service is decided when the service agreement is reached, but not decided after the transaction is completed. This is the main difference between existing and this newly designed payment system. How agents reach the service agreement at the centralized market is not discussed in this thesis though. The focus of this thesis is on the design of the payment process which is modified from the Multi-Agent Payment System in order to suit with the Grid environment. Furthermore, existing payment method in Grid computing is almost account-based. By using blind signature and E-cash mechanism, this payment system supports the anonymity in transaction which account-based payment system could not support.