Apple has obtained a patent that could enable music and video sharing and along with other features by adding a new layer of digital rights management (DRM). "The systems and methods provide an encrypted copy of a digital content unit to a first user and transcript the encrypted copy to generate the legitimate copy to a second user," reads the patent that Apple says could reduce both piracy and bandwidth costs. According to Apple's new patent, the encrypted copy contains two keys that unlock a single track: one is associated with the first user (presumably the purchaser) and a second...

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