Electrical computers and digital processing systems: support – Data processing protection using cryptography
Reexamination Certificate
2006-08-29
2006-08-29
Jung, David (Department: 2134)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
C713S168000, C713S150000
Reexamination Certificate
active
07100055
ABSTRACT:
A storage medium includes a storage device for storing information, information required for encryption and encrypted information, and an I/F device for inputting and outputting information, information required for coding and store encrypted information in a storage device or from an external apparatus other than the storage device, and an encoding device for coding of information and decoding of encoded information. When outputting information stored inside the storage device, information is encoded using encryption key information, and along with obtaining the encoded information and obtaining the encoded encryption key information by using another encryption key. Both the encoded information and encoded encryption key information are output so that decoding the information without the storage medium is impossible.
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Asahi Takeshi
Kawasaki Ikuya
Kitahara Jun
Mizushima Nagamasa
Owada Toru
Hitachi , Ltd.
Jung David
McDermott Will & Emery LLP
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