數位化加上網際網路快速發展，數位內容變得非常容易取得。數位內容具有容易複製與快速傳遞的特性，若無保護機制，這些數位內容很容易遭到不合法的使用、複製以及竄改。發展數位版權管理系統的目的即是為了保護數位內容，但大多數之數位版權管理系統是屬於自定規格的系統，不同之數位版權管理系統彼此之間亦缺乏相互溝通的彈性。
資訊科技變化迅速，數位版權管理系統需有能因應時勢所需，提供功能抽換之能力。在本論文中，利用開放行動聯盟（Open Mobile Alliance, OMA）所制定的規範，提出數位版權管理架構，此架構使用模組化的設計方式，以利於未來做功能上的更改或增減。本文所提出的架構可以讓使用者自行選取數位內容的使用權限，在離線使用數位內容的部份必須利用所設計的離線播放器來開啟受保護的數位內容。在數位內容的保護機制上，將數位內容與版權描述文件分別以不同的管道提供給使用者下載以達到內容與版權發佈分離之原則。

Rapid growth of digital technology and wide availability of network access lead to digital contents getting much easier. Digital contents can be easily duplicated and have the characteristic of easy transmission. Those contents can be used, copied and spread without limit until those contents has been protected. The purpose of the development of digital rights management system is to protect digital content. But most of these systems belong to customized specifications. Different digital rights management systems are lacked of the interoperability.
In this thesis, the specifications proposed by Open Mobile Alliance (OMA) are adopted to design the framework of the proposed digital right management system. The system consists of different modules for modulability. The digital content is protected via both encryption and right description. The encrypted digital content and its right object are sent to the user separated. Finally, the user must install the provided offline player for playing the digital contents.

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