Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2011-07-05
2011-07-05
Jung, David Y (Department: 2431)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S189000, C713S153000
Reexamination Certificate
active
07975148
ABSTRACT:
In an information recording medium reproducing method, an information recording medium, a reproducing apparatus and an information recording medium managing method, a predetermined server is accessed on the basis of an address recorded in an information recording medium to issue key data from the server, and encrypted data recorded in the information recording medium are decrypted with the key data thus issued.
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Jung David Y
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Sony Corporation
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