Information security – Prevention of unauthorized use of data including prevention...
Reexamination Certificate
2008-04-01
2008-04-01
Tran, Ellen (Department: 2134)
Information security
Prevention of unauthorized use of data including prevention...
C380S201000, C380S232000, C380S239000
Reexamination Certificate
active
09820852
ABSTRACT:
The present invention is intended to prevent sold digital information from being used in a non-compliant manner. Digital information accumulation capability212accumulates digital information6to be sold. License generating capability227generates the usage conditions for digital information6. Encryption capability229encrypts digital information6. Digital information key generating capability228generates a cryptographic key for decrypting encrypted digital information6. Authentication capability214authenticates recording medium with license management capability102-1loaded in digital information vending apparatus101. Licensed digital information writing capability230writes encrypted digital information and its usage conditions and cryptographic key onto authenticated recording medium with license management capability102-1.
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Kishi Haruhiko
Kurihara Akira
Oblon & Spivak, McClelland, Maier & Neustadt P.C.
Sony Corporation
Tran Ellen
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