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US08086535B2 Decoupling rights in a digital content unit from download 有权
从数字内容单元中解耦权限下载

Decoupling rights in a digital content unit from download
Abstract:
Systems and methods for enabling a user to obtain rights in a legitimate copy of a digital content unit without downloading the copy from a digital content store are provided. 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. The encrypted copy is encrypted with a first encrypt key that may be associated with the first user and the legitimate copy is encrypted with a second encrypt key that may be associated with the second user.
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