| Summary: | 碩士 === 開南大學 === 資訊及電子商務學系 === 99 === The Digital Right Management (DRM) scheme is a digital protection technique which protects and manages the access rights of digital contents. It can prevent the confidential information of a digital content from unauthorized usages by illegal users. The DRM scheme also supports the content authors to specify their access rights for their digital contents, such as reading, copying, and editing rights. Thus, the authors can use the DRM scheme to specify whether their digital contents can be copied, edited, or viewed by an authorized user. However, the previously proposed DRM schemes have high computation loads, and thus they are not suitable and impractical for mobile devices. To solve the above problem, we propose four DRM mechanisms for mobile devices in this thesis.
In Chapter 2 of the dissertation, we propose an efficient and flexible DRM mechanism with user anonymity. The proposed DRM mechanism has low computation cost. In addition, it provides user anonymity so that the user privacy can be well-protected. In Chapter 3, we propose an E-DRM mechanism for mobile devices. The proposed mechanism can protect the digital content even if the mobile device has been lost or stolen. In addition, it is more flexible and efficient than the related works for mobile users. In Chapter 4, we propose a group-oriented Enterprise Digital Right Management (E-DRM) mechanism with reliable and flexible access policies. The proposed mechanism allows multiple users to acquire the access rights, which can be dynamically determined according to the enterprise policy. In Chapter 5, we propose an efficient and secure DRM mechanism for mobile social platforms. The proposed mechanism uses one-way hash function and exclusive-or operations to reduce the computation cost of mobile devices. In addition, it provides a secure network environment for users of the mobile social platform.
Compared with the related works, the proposed DRM mechanisms have lower computation loads and higher security levels. Therefore, they are all suitable for mobile devices. Moreover, the dissertation proposed four DRM mechanisms for mobile devices, which can satisfy most of applications in mobile commerce. Therefore, the research result of this dissertation provides future research directions for the digital content protection and management.
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