Electrical computers and digital processing systems: support – System access control based on user identification by...
Reexamination Certificate
2005-11-29
2005-11-29
Morse, Gregory (Department: 2134)
Electrical computers and digital processing systems: support
System access control based on user identification by...
C713S156000, C713S168000, C701S036000
Reexamination Certificate
active
06971015
ABSTRACT:
Methods and arrangements are provided verify if a requesting computer application is authorized to change a controlled parameter associated with a computer controlled device and/or function. To accomplish this, one or verification functions are employed to analyze a security code or absence thereof, as identified by a requesting application. If the security code, which may be encrypted, matches a known or calculated valid security code, then the requesting application is deemed to be authorized to change the controlled parameter and/or modify certain limitations associated with an acceptable range for the controlled parameter. If the security code does not match a known or calculated valid security code, then the requesting application is deemed to be unauthorized to change the controlled parameter outside of a previously established acceptable range for the controlled parameter. The verification function can be implemented in a ROM to increase the security and to thwart attempts to circumvent the authorization scheme. Several independent verification functions can be arranged to support the verification of a plurality of authorized applications.
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Falcon Stephen Russell
Yip Clement Chun Pong
Lee & Hayes PLLC
Microsoft Corporation
Morse Gregory
Tran Tongoc
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