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AssigneeFujitsu Limited
InventorsMasahiro Nakada, Noriyuki Sato, Hiroyuki Okitsu, Hiroyuki Seino, Yoshiyuki Kudo
Estimating the term…
To protect secrecy of information processed by a computer system by performing access control and encryption by using a group identifier as a key, an information storage (1) of the computer system includes an arithmetic processing unit (2) which generates a specific number (ID) for identifying the information storage (1) through parameter arithmetic on the basis of medium information (DD) which identifies definitely a data storing medium and specific information (SD) obtained by grouping environment information on a per species basis. The specific number (ID) is stored in a nonvolatile memory (6) or an information recording medium (7) as the group identifier (ID). An information recording medium control unit (5) manages the information on a per group basis on the basis of the specific number (ID). Information can be laid open in personal computers belonging to a same group while being protected from leakage to third party.
An information storage apparatus designed for storing data used in an information processing system, comprising:
An information processing system equipped with an information storage apparatus for storing data,
A specific number generating method of generating a specific number used for ensuring security of data, said method being carried out by an information storage apparatus capable of storing data used in an information processing system, comprising the steps of:
A method of generating a specific number used for ensuring security of data in an information processing system comprised of a host and an information storage apparatus capable of storing the data,
A specific number generating program recorded on a computer-readable storing medium for the purpose of generating a specific number used for ensuring security of data, said program being executed by a computer provided in association with an information storage apparatus capable of storing data used in an information processing system;
A specific number generating program which is executed by a computer incorporated in an information processing system comprised of a host and an information storage apparatus capable of storing data for generating a specific number used for ensuring security of data, said program being recorded on a storing medium readable with said computer,
Dependencies are inferred from the claim text.