Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2006-11-14
2006-11-14
Song, Hosuk (Department: 2135)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S189000, C713S192000
Reexamination Certificate
active
07137012
ABSTRACT:
A revocation list is registered a public ROM area. The revocation list designates at least one electronic device in which use of the storage medium by the designated electronic device is to be revoked. A controller receives from the electronic device which attempts to access, identification information indicative of the electronic device, and checks whether identification information corresponding to the received identification information is contained in the revocation list, thereby determining whether or not use of the storage medium by the electronic device which attempts to access should be revoked.
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Harada Shunji
Ishibashi Yasuhiro
Iwasaki Hiroshi
Kamibayashi Tooru
Kato Taku
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
Gyorfi Thomas
Kabushiki Kaisha Toshiba
Matsushita Electric - Industrial Co., Ltd.
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