在數位平版電腦及數位電視上研發具有跨平台能力之多媒體數位版權管理系統

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姓名

薛浩哲(Hao-che Hsueh) 查詢紙本館藏

畢業系所

資訊工程學系

論文名稱

在數位平版電腦及數位電視上研發具有跨平台能力之多媒體數位版權管理系統
(Developing a Cross-platform DRM System for Multimedia Content on E-pad and E-TV)

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至系統瀏覽論文 ( 永不開放)

摘要(中)

在現今數位多媒體蓬勃發展的情況下，以及多媒體行動裝置的使用者數量也以非常快的速度增加中。因此數位多媒體檔案便很容易遭受到不法的複製和散布，這些非法的行為都會伴隨檔案創造者著作權的問題和許多涉及數位多媒體本身所具有的經濟價值之議題。也因此衍生出了許多數位多媒體檔案的保護機制，並稱之為數位版權管理系統，其功能不乏對多媒體檔案做加密處理、使用簽章檔案來限制多媒體檔案的使用權限等等。在先前，許多針對數位行動環境所研發出的數位版權管理系統幾乎都有著安全性和效率性不可兼顧的問題。然而近年來行動裝置的硬體運算能力日漸增強，高效能的行動裝置也越來越普及。所以我們針對中高效能的行動裝置設計出一套高安全性及高效率的數位版權管理系統，基於我們先前的研究，除了延續使用高安全性的區塊加密演算法，我們另外加入了金鑰轉換引擎來保護加密金鑰。我們也運用了數位簽章的技術來保護授權文件的安全，最後，我們將解密時讀取的區塊增大，從而實現了更有效率的解密機制。

摘要(英)

The distribution of multimedia content involves the lawful rights of content owner and the economic value to the content provider, which there are lots of content protect issues around, such as preventing illegal copy and redistribution. And now the mobile device which has capability to play multimedia content becomes popular, and most of them have networking ability that allows them to access contents without computers. Accordingly, there were a few Digital Right Management system (DRM system) designed for mobile devices, yet the trade-off between performance and security exist in those previous studies. However, the capacity and capability of mobile device grows much wider, even dual-core CPU or quad-core CPU attaches on the devices, therefore, we aim on developing such a new designed DRM system on dual-core CPU devices with a high security and reasonable cost. We adopt a block cipher with manipulating the position of the file to enhance the security level; also we provide fast and accurate license verification by using RSA digital signature technique, and last, we expand the buffer reading size while decrypting and observe significant performance improvement in varying decryption settings.

關鍵字(中)

★ 數位版權管理系統
★ 跨平台多媒體內容加解密
★ 數位簽章
★ 行動應用

關鍵字(英)

★ DRM system
★ cross-platform decryption
★ multimedia content
★ digital signature
★ mobile application

論文目次

摘要……………………………………………………………………………..ii
Abstract…………………………………………………………………………iii
誌謝……………………………………………………………………………..iv
Table of Contents……………………………………………………………….v
List of Figures………………………………………………………………….vi
List of Tables…………………………………………………………………..vii
1. Introduction…………………………………………………………………..1
2. Related Work………………………………………………………………….6
3. System Design……………………………………………………………….12
3.1. System Overview…………………………………………………….12
3.2. System Architecture…………………………………………………13
3.3. Encryption Scheme……………………………………………………14
3.4. License Design………………………………………………………20
4. Implementation………………………………………………………………22
4.1. Basis of Implementation………………………………………………22
4.2. Manager Client………………………………………………………24
4.3. License Implementation………………………………………………27
4.4. Customer Client……………………………………………………….28
4.5. Performance Evaluation………………………………………………29
5. Conclusion…………………………………………………………………33
6. List of References……………………………………………………………34

參考文獻

[1] Joan Feigenbaum, Michael J. Freedman, Tomas Sander, and Adam Shostack, "Privacy Engineering for Digital Rights Management Systems", proceeding of the ACM Workshop on Security and Privacy in Digital Rights Management, Nov 2001.
[2] JungKyu Han, Hye-Young Chang, Seongje Cho, and Minkyu Park, “EMCEM: An Efficient Multimedia Content Encryption scheme for Mobile handheld devices”, International Conference on Information Science and Security, 2008.
[3] Hsiao-Kuang Wu, Chen-Yen Shih, “A DRM System for Multimedia Content in Mobile Applications”, July 2012.
[4] S. Fluhrer, I. Mantin, and A. Shamir, “Weaknesses in the Key Scheduling Algorithm of RC4”.
[5] Golic, “Linear statistical weakness of alleged RC4 key stream generator”, In EUROCRYPT: Advances in Cryptology: Proceedings of EUROCRYPT, 1997.
[6] A. L. Grosul and D. S. Wallach, “a related-key cryptanalysis of rc4”, June 2000.
[7] Siddharth Bhatta, Radu Sion, and Bogdan Carbunar, “A personal mobile DRM manager for smart-phones”, computers & security 28 ( 2009 ),pp.327–340.
[8] R. Iannella, “Digital Rights Management (DRM) architectures”, D-Lib Magazine, 7 (6) (2001)
[9] Windows Media DRM. http://www.microsoft.com/windows/windowsmedia/forpros/drm/default.mspx.
[10] Gunhee Kim, Dongkyoo Shin and Dongil Shin, “An Efficient Methodology for Multimedia Digital Rights Management on Mobile Handset”, IEEE Transactions on Consumer Electronics, Vol. 50, No. 4, Nov. 2004.
[11] Kyoung-Ho Kim, Goo-Rak Kwon, Tea-Young Lee, Moo-Rak Choi, and Sung-Jea Ko, “Multimedia digital rights management using modified motion vector for mobile device”, Consumer Electronics, 2006. ICCE ’06. 2006 Digest of Technical Papers. International Conference on
[12] ASUS Eee Pad Transformer Prime TF201. http://www.asus.com/Tablets_Mobile/Eee_Pad_Transformer_Prime_TF201
[13] OpenSSL Cryptography and SSL/TLS Toolkit http://www.openssl.org/

指導教授

吳曉光(Hsiao-kuang Wu)

審核日期

2013-7-19

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