July 2010
Intermediate to advanced
544 pages
15h 53m
English
Content preview from High-Performance Embedded Computing
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1.7 Consumer Electronics Architectures 59
types of copyrighted material are used in computer systems. A copyrighted
work may be sold with a number of restrictions: how many times it can be
played, how many machines it can be played on, expiration date, and so on.
DRM determines the rights associated with a copyrighted work and enforces
those rights on the device.
Digital rights management makes use of cryptography but is itself much
more than cryptography. Once an encrypted work has been decrypted, it can be
used and modified freely. The DRM system may encrypt both the content and its
associated rights information, but it enforces those rights throughou ...
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