近年來，由於各種數位技術和儲存設備的迅速發展，許多資訊逐漸數位化，數位內容在網路發展蓬勃的現在，將更容易的被傳遞和散播。而數位內容在本質上，也非常容易的對其做非法的修改、儲存。為此，數位產權管理(DRM)因應而生，數位產權管理的目的即是提供數位內容的保護和管理，讓數位內容在其的生命週期中提供有效的保護；在應用上，傳統存取條件系統(CAS)無法滿足未來的的電視商業型態，在機上盒(Set-TopBox)仍可竊盜數位內容，造成數位產業鍊額外的損失。因此逐漸有將數位產權管理和傳統存取條件系統整合在一起的討論。由於目前許多的數位產權管理系統並沒有考慮到使用者消費時的匿名性還有主機可能的惡意行為，我們以更高的安全標準，運用已提出的安全性理論，針對現有的系統架構進行改良，提出了更完整、更安全的架構。在我們的論文中，首先簡略的介紹密碼學、傳統存取條件和數位產權管理相關的概念與系統，並說明先前已提出的架構，接下來提出新的安全需求和改良後的運行方式。最後，我們依照公開行動聯盟所訂定的數位產權管理系統(OMA DRM)，建立相容於於標準的系統在OpenMHP上。

In recent years, the trend has been already progressive toward digitalization in many industries. The natures of digital content are easy to be modified and distributed. According to the problem, Digital Rights Management (DRM) is used to protect and manage digital content. Nowadays, multimedia content protected under Conditional Access Broadcasting system is not enough for commercial modes, and users can still usurp multimedia contents from Set-Top
Box. To prevent the multimedia contents from being usurped, there are some researches which focus on how to integrate DRM into CAS. However, many existing DRM systems do not consider the anonymous consumption and malicious server. In this thesis, we proposed protocols to achieve anonymous consumption and against malicious server. Furthermore, we built a DRM system compatible with OMA DRM in OpenMHP.

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