Electrical computers and digital processing systems: support – Data processing protection using cryptography
Reexamination Certificate
2006-01-10
2010-02-16
Song, Hosuk (Department: 2435)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
C713S193000, C380S200000, C380S201000
Reexamination Certificate
active
07664964
ABSTRACT:
An electronic media communication apparatus is provided in which encryption keys and decryption algorithms are provided as circuits concealed in logic programmable devices. When the client requests delivery of electronic media, the server individually encrypts the electronic media and delivers the encrypted electronic media to the client. In the client, an electronic media specific circuit section uses logic circuit data received via a client data communication section to generate an electronic media specific logic circuit. Then, a logic circuit configuration section combines the logic circuit with a terminal specific circuit section uniquely implemented for the client to form an electronic media security circuit section. The original digital content can then be generated by inputting the encrypted electronic media stored in a storage unit to the electronic media security circuit section. Correct decryption is only possible when the electronic media specific circuit section and the terminal specific circuit section are used together in combination.
REFERENCES:
patent: 5392351 (1995-02-01), Hasebe et al.
patent: 2003-69551 (2003-03-01), None
Toda Kenji
Yokoyama Hiroyuki
KDDI Corporation
National Institute of Advanced Industrial Science and Technology
Oblon, Spivak McClelland, Maier & Neustadt, L.L.P.
Song Hosuk
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