| Summary: | 碩士 === 國立臺灣大學 === 資訊工程學研究所 === 92 === Universal perfect replication and instant world-wide distribution are two most influential achievements to digital content. On the one hand, they give an extremely flexibility to content production, transportation, and consumption; on the other hand, the risks to pirate are eased. Thus, there''s an eager need for reliable and trustful Digital Rights Management to give content providers a piracy-free environment.
In our work, we practically built a DRM system aims at
digital images by integrating various technologies, including cryptography and digital watermarking. Additionally, we believe the central idea of DRM is to collectively protect entire life cycle of contents, so that buyers'' right cannot be invaded while protecting sellers''. Therefore, we suggest the separation of watermarking generation and embedding in order to assure both buyers'' and sellers'' rights, i.e. we embed digital watermarks via buyer-seller watermarking protocol. Nevertheless, it''s insufficient for technical protections to challenge DRM alone. Technical protection mainly focuses on those general users, but is ineffective to professional criminals. On the other hand, legislative protections complements the shortcomings of technical protections that deter the professional criminals. Therefore, we conclude that the piracy-free environment is likely to exist only under those protections that combine both technological measures and legal provisions.
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