臺灣博碩士論文加值系統

隨著數位學習的快速興起，在不同數位學習社群間的資源共享，為數位學習教材的重要來源，但是社群的認證機制在數位學習的過程中往住被忽略，導致未經授權的學習者能夠輕易得到學習教材。這是因為一般的社群架構都是建構在數位學習系統上，在安全認證時只能進行單一認證，因為此一認證機制通常是在設計數位學習系統時，直接採用密碼認證的方式進行權限的控管或是保護數位教材的安全性，因而產生授權認證的問題，目前並沒有一套很完善的方案來處理這方面的問題。
本研究主要的目的就是在數位學習格網上，針對社群安全部份，加上一個衍生的安全機制，經由這種安全機制，可以讓數位學習格網的社群得以經由身份認證之後，取用其他同屬在一個聯盟�堛爾篞蔭氶A不必重覆認證，進而達到簡化驗證程序。
在文獻探討方面，主要運用格網技術與PGP加密機制的相關技術，透過GT4 (Globus toolkit 4.0.3) 的基本架構，提出以格網聯盟通關法之快速通關的認證方式來建立數位學習格網之社群安全機制，並有效管理分散之數位學習教材的讀取權限。
系統設計方面，計劃使用Web Service的入口網站及PGP的信任機制，將三台不同的社群，藉由衍生出來的認證機制－格網聯盟通關法，讓學習者持有合法憑證，經過驗證後就可以取用在社群�堜珒ㄗ悛爾篞翩A進而使數位學習格網的社群安全性得到保障。

With the rapid growth of e-Learning, its teaching materials mainly comes from resource sharing among different e-Learning communities. However, the examinations of community are usually ignored during e-Learning, further causing unauthorized learners easily acquire teaching materials. This is because the general communities which are constructed upon e-Learning system can only perform singular examination, namely the management of authority or security of e-Learning teaching materials is operated through code examination directly. Therefore, the above-mentioned conditions result in authentication and examination problems, which still lack an ideal solution.

Focusing on community security dimension on e-Learning Grid, this study applies an additional derivative security mechanisms to make communities inside the e-Learning Grid can take resources inside the same alliance without repeated examinations, further simplifying the certification procedure.

In the literature review, according to related technologies of Grid technology, PGP encryption mechanisms, and basic frame of GT4 (Globus toolkit 4.0.3), this study not only proposed a rapid examination method based on Grid Alliance-PASS to establish security mechanisms of e-Learning Grid, but also manages the access right of distributed e-Learning teaching materials effectively.

As for system design, this study aims to integrate portal site of Web Service and trust mechanism of PGP, and utilizes derivative examination mechanisms- Grid Alliance-PASS to make learners with legal certificate acquire all information among 3 different communities and safeguard communities in e-Learning Grid.

目錄
中文摘要 I
ABSTRACT II
致謝辭 III
目錄 IV
圖目錄 VI
表目錄 VII
第壹章　緒論 1
第一節 研究背景與動機 1
第二節 研究目的 2
第三節 待答問題 3
第四節 研究範圍 3
第五節 研究限制 5
第六節 論文架構 5
第貳章　文獻探討 7
第一節 數位學習格網概述 7
第二節 數位學習的安全機制 8
第三節 格網的安全機制 11
第四節 PGP的加密機制 13
第五節 數位學習格網的社群安全性問題 14
第參章　研究方法 17
第一節 設計理念 17
第二節 研究架構與流程 18
第三節 環境建置 19
第肆章　系統架構與實驗模擬 21
第一節 系統設計 21
第二節 系統環境 22
第三節 系統實作 23
第四節 系統運作流程 26
第伍章　實作結果與討論 29
第一節 實作結果 29
第二節 研究成果及討論 34
第陸章　結論與未來發展 36
第一節 結論 36
第二節 未來發展 36
參考文獻 38
作者簡歷 40
圖目錄
圖1 - 1 研究架構 5
圖2 - 1 數位學習格網的示意圖 8
圖2 - 2 數位學習網站安全機制示意圖 10
圖2 - 3 G-PASS安全基礎建設 13
圖2 - 4 PGP信任機制 14
圖2 - 5 PGP公開鑰匙環 14
圖3 - 1 身份辨識記錄 18
圖3 - 2 研究架構 18
圖3 - 3 研究流程 19
圖4 - 1 系統架構圖 21
圖4 - 2 環境架構圖 23
圖4 - 3 系統運作示意圖 24
圖4 - 4 系統運作流程-加密 26
圖4 - 5 系統運作流程-信任 27
圖5 - 1 公鑰及私鑰列表 29
圖5 - 2 格網入口網站 30
圖5 - 3 部署PGP格網服務的照片 32
圖5 - 4 查詢PGP格網服務 32
圖5 - 5 目前可用的資源列表 33
圖5 - 6 資源加密後回傳至格網入口網站 34
表目錄
表1 本研究系統測試硬體平台環境 24
表2 本研究系統測試軟體環境 25

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