Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2007-04-24
2007-04-24
Barroń, Gilberto (Department: 2134)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C726S028000, C726S017000
Reexamination Certificate
active
10081061
ABSTRACT:
Techniques of improving the safety of an information processing system at low cost are provided, the information processing system having an OS provided with an access control function based upon discretionary access control for preventing illegal accesses to files. A method and apparatus for providing the information processing system with functions and areas usable only by a specific user different from a system administrator. The areas are provided with an access control function in order to prevent the access control function from being tampered.
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Arai Masato
Arai Toshiaki
Itoh Shinji
Matsuki Takeshi
Miyazaki Kunihiko
Barroń Gilberto
Hitachi , Ltd.
Nalven Andrew L.
Townsend and Townsend / and Crew LLP
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