US Patent 8194859 Efficient key hierarchy for delivery of multimedia content
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Patent abstract
A Digital Rights Management (DRM) system provides a lightweight layering of encryption and decryption of keys that allows efficient use of different cryptographic techniques to effect the secure delivery of multimedia content. Asymmetric cryptography, where a public key is used to encrypt information that can only be decrypted by a matched private key, is used by the DRM system to deliver symmetric keys securely.
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Patent Inventor Names
Christopher R. Wingert0
Pooja Aggarwal0
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US Patent 08194859 Efficient key hierarchy for delivery of multimedia content US Patent 8194859 Efficient key hierarchy for delivery of multimedia content
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Patent Number
08194859
Patent Number
8194859
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US Patent 08194859 Efficient key hierarchy for delivery of multimedia content
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Patent jurisdiction
Patent number
08194859
Date of patent
June 5, 2012
Patent application number
11511736
Date Filed
August 28, 2006
Patent primary examiner
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