Information security – Prevention of unauthorized use of data including prevention... – Access control
Reexamination Certificate
2011-08-09
2011-08-09
Vu, Kimyen (Department: 2435)
Information security
Prevention of unauthorized use of data including prevention...
Access control
C726S017000, C726S021000, C713S172000
Reexamination Certificate
active
07996914
ABSTRACT:
A semiconductor memory card comprising a control IC302, a flash memory303, and a ROM304. The ROM304holds information such as a medium ID341unique to the semiconductor memory card. The flash memory303includes an authentication memory332and a non-authentication memory331. The authentication memory332can be accessed only by external devices which have been affirmatively authenticated. The non-authentication memory331can be accessed by external devices whether or not the external devices have been affirmatively authenticated or not. The control IC302includes control units325and326, an authentication unit321and the like. The control units325and326control accesses to the authentication memory332and the non-authentication memory331, respectively. The authentication unit321executes a mutual authentication with an external device.
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Hirota Teruto
Kozuka Masayuki
Minami Masataka
Tatebayashi Makoto
Yugawa Taihei
King John B
Panasonic Corporation
Vu Kimyen
Wenderoth , Lind & Ponack, L.L.P.
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