Executive Summary: Today the risks associated with PC downloads are all too familiar. A music, video, or other file, which has been pulled via unicast over the Internet into a standard PC, can be instantaneously copied, and redistributed, at will. Companies have responded to this piracy by introducing various digital rights management (DRM) schemes, and by streaming content rather than downloading entire files, attempting to make unauthorized copying harder than the current “point-and-click ” scenario. The problem is that the commonly used DRM mechanisms are software-only solutions and, as some pundits have said, “software security is an oxymoron. ” Most of the current security mechanisms have already been hacked, and streamed content also remains insecure. While the security of downloads is a valid concern, it is important to recognize that the security of content is defined by the means used to protect it, not where the content is located. Content on an insecure server is vulnerable to attack by programs commonly available on the Internet. Content securely cached on the hard drive can be made virtually impossible to obtain without proper payment and authorization. This paper details the security of a content distribution/storage model in which content i
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