Electrical computers and digital processing systems: support – Data processing protection using cryptography
Reexamination Certificate
2005-12-27
2009-12-29
Song, Hosuk (Department: 2435)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
C380S037000, C380S044000, C380S281000, C380S282000
Reexamination Certificate
active
07640435
ABSTRACT:
A system, apparatus, and method are directed to providing and securely viewing secure content. In one embodiment, a secure player provides secure screening/previewing of secure content, such as a motion picture, by a member of an awards organization. A content key is employed to selectively encrypt at least a portion of a content stream. The content key is encrypted with a screener key. The encrypted content key is embedded into the secure content. The screener key is encrypted using public/private key pair that is bound to the secure player. The secure content may be distributed on a medium, such as a DVD, high definition DVD, and the like. The secure player is configured to receive the medium, screener key, and a screener identity. The screener identity and screener key are employed by the secure player to decrypt and enable secure viewing of the content.
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Cheng, H.C.H.,
Darby & Darby P.C.
Song Hosuk
Widevine Technologies, Inc.
Wiegand Jamie L.
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