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  • 學位論文

無縫式行動通訊服務購買之微付費機制的設計

Secure Micropayment Mechanism for Universal Mobile Internet Service

指導教授 : 孫雅麗

摘要


隨者無線網路日益發達,越來越多之商家開始提供無線網路連接服務給消費者使用。一般而言,大多商家目前都以免費或預先買卡的方式提供使用者無線網路使用,而且每家商家的網路服務不能互通。這樣的商業模式因為不方便性必然無法長期存在,由於使用者會開始要求商家提供良好的無線服務與通訊品質,商家為勢必對提高服務品質與收費機制上有新的作為,這也就是本論文研究重點。 舉例來說,越來越多的人使用VoIP這類的通訊模式,在無線的環境中,使用者很可能會持續移動,由一家商家門口走到另外一家商家,其所使用行動通訊服務必須能夠繼續無縫式(Seamless)地進行以保持通話品質。為了符合消費者之需求,使用者必須能夠在移動的同時,快速地進行服務之購買與認證之程序。然而,由於Mobile Users會在不同的區域範圍間進行移動,事先無法確定其會與哪些商家進行交易,因而難以預先建立個別的交易方式及管道,本論文針對這些問題提出解決方式來確保行動通訊服務與付費安全完成。 一般目前所使用的Macropayment機制(如信用卡),付費過程緩慢,且驗證成本過高,對於單筆交易額度低廉的行動通訊服務來說,無法負擔使用者在移動過程中的改買需求。因此,必須提供一完整且能夠快速完成認證程序之微付款機制(Micropayment Mechanism),使得消費者在各個不同的服務範濤中,都能快速且安全地購買其所需求之行動通訊服務。 本篇論文提出了一個Secure Micropayment Mechanism,針對金額較低廉的行動通訊服務(Mobile Internet Service),各式網路資訊瀏覽或下載(如發送電子信件或購買歌曲),甚至小額購買(如飲料、報紙)之交易,進行快速且安全的購買及認證程序。此機制主要是將Micropayment,Mobility與安全性相關的認證及傳輸等機制加以結合,利用One Way Hash及Trusted System,提供一完整的付款機制,使得分屬於不同體制下得商家能夠快速且自行對Mobile User進行收費,並經過驗證之後,立即提供各式的服務。在交易過程中所可能遭遇的攻擊或各式的竊取行為(包括Double Spending與Eavesdropping),都能及時的偵測並拒絕此次交易的進行,以避免雙方不必要的損失發生。再者,由於商家本身即能夠對不同的使用者的付款訊息快速地進行驗證,交易的成本及交易過程所導致的延遲將會降至最低,如此一來,在不同區域間經常性移動的的使用者,便能快速付費以接取其所需求之網路資源,取得或繼續其既有的行動通訊服務。

並列摘要


As Users buy Mobile Internet Service from multiple Vendors, they will hope to continuous their original communication without interruption. It’s hard to ask CA to secure the channel rapidly without causing long processing latency to delay Users’ connection. We purpose a fast AAA mechanism for Vendor to verify each payment directly without the 3rd party to involve. Because value of such service is low, we adopt Micropayment for purchase. Besides, with the schemes of one way hash and Trusted System, we can rapidly authenticate following payment token and scurely store each sensitive data from any one outside. It will hugely enhance efficiency and security of our system. Mobile User can buy Mobile Internet Services from multiple Mobile Internet Services provider more securely and seamlessly. Universal Mobile Internet Service is provided by multiple service providers within different Service Domains. The home M-ISP (Mobile Internet Service Provider) to which Mobile User belongs may not be the current M-ISP from which Mobile User can purchase services. We provide the Secure Micropayment Scheme for Mobile User to purchase from multiple service providers. No matter where Mobile Users are, they can buy wireless resources and connect to Mobile Internet speedily. In order to allow each party within transactions can gain its best benefit, we also purpose the solutions about fair exchange, handoff issues and business models. Each of them can assist our system to operate more accurately.

參考文獻


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