臺灣博碩士論文加值系統

近年來，隨著網路技術的發展與行動裝置的普及化，對於電子商務的應用越來越方便，如果使用者要進行額度較高的消費，可能使用信用卡或是電子支票做為付款方式，可是這兩種付款方式都有各自的差別，線上信用卡付費是輸入使用者的卡片資訊來進行消費，缺點是如果遇到惡意的網站就會造成資料外洩，卡片遭到盜刷，而電子支票的缺點是每使用一次電子支票必須重新申請，以及需要安全通道傳遞電子支票。
本篇論文中，我們設計一個電子支票系統，建置於行動裝置，我們在手機上建置銀行代理人，管理支票，防止支票遭到濫用，使用金鑰交換的方式，確保只有指定的收款者可以解密取得支票訊息，並且利用簽章來認證每個參與者的身份。

In recent years, with the development of Internet technology and popularity of mobile devices, e-commerce applications have been more and more convenient. If the users proceed a higher amount of spending, the payment may be made by credit cards or e-checks. However, the two methods differ from each other. Online credit card payment is processed by entering the cardholder’s information; its disadvantage is the leak of information on the malicious websites so the future unauthorized payment will occur. And the shortcomings of using e-checks are the re-application of the e-check whenever it is used, and the necessity to have a secure channel to transmit the e-checks.
In the thesis, we design an e-check system built in the mobile device. We can set up bank agents in our mobile phones to manage the checks and prevent the unauthorized use of checks. By way of key agreement, it is assured that only the designated recipient can decipher the code and get the check information. And the signature is utilized to authenticate every participant''s identity.

目錄
誌謝 IV
中文摘要 V
ABSTRACT VI
目錄 VII
表目錄 X
圖目錄 XI
第一章 緒論 1
1.1 前言 1
1.2 研究動機 1
1.3 研究目的 2
1.4 論文架構 3
第二章 相關密碼學理論與技術 4
2.1 雙線性配對(Bilinear pairings) 4
2.2 基於身份的加密協定(Identity-based encryption) 4
2.3 基於身份的簽章協定(Identity-based signature scheme) 5
2.4 基於身份的金鑰交換(Identity-based authenticated key agreement) 6
第三章 基於身份的電子支票系統 8
3.1 電子支票系統 8
3.1.1 系統環境流程步驟 8
3.1.2 參數符號定義 9
3.1.3註冊階段 11
3.1.4 提領階段 11
3.1.5 付款階段 15
3.1.6 存款階段 18
第四章 安全性分析和效能分析 20
4.1安全性分析 20
4.1.1唯一性 20
4.1.2正確性 20
4.1.3可識別性 20
4.1.4不可偽造性 20
4.1.5不可否認性 21
4.1.6電子支票遺失 21
4.1.7預防重複消費 21
4.1.8相互驗證 21
4.2效能分析 22
第五章 結論 25
參考文獻 26
附錄A：作者簡介 28
附錄B：口試委員意見修正 29
表目錄
表1.先前學者與我們的方案之功能比較 22
表2.我們的協定之運算成本 23
表3.我們的協定與其他學者協定之通訊量比較 24
圖目錄
圖1.電子支票系統流程圖 8
圖2.電子支票系統-註冊階段 11
圖3.電子支票系統-提領階段 14
圖4.電子支票系統-相互認證階段 17
圖5.電子支票系統-付款階段 18
圖6.電子支票系統-存款階段 19

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