![]() The design consists of a virtual audio device driver that forwards sound streams to a user-level network server. ![]() The technique is based on the implementation of hosted I/O VMMs that intercept device I/O instructions executed by a "guest" O/S and emulate them through system calls processed by device drivers of a "host" O/S. This weakness was discovered while creating a technique for remote transfer of audio streams generated by a Virtual Machine Monitor (VMM), to achieve network transparency for audio devices. ![]() This paper examines the architecture of present day systems and shows that they are not trustworthy enough to support certain DRM features/restrictions, even when the DRM delivery system exclusively utilizes signed and protected operating system components. ![]()
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