Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Security kernel or utility
Reexamination Certificate
2000-05-23
2010-02-09
Pyzocha, Michael (Department: 2437)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Security kernel or utility
C380S239000, C380S241000, C380S242000
Reexamination Certificate
active
07660986
ABSTRACT:
A system to change security levels is used to change the level of security used in a secured processing system. The system uses a status indicator to designate the security level being implemented. The security level can be upgraded to allow a higher level of security to be implemented with relative ease. However, in order to change from a higher level of security to a lower level of security, an authorization code is utilized to confirm that the change in security is authorized.
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PCT International Search Report for International Application No. PCT/US00/15944 mailed Oct. 11, 2000.
PCT International Search Report for International Application No. PCT/US00/15870 mailed Oct. 11, 2000.
Moroney Paul
Qiu Xin
Sprunk Eric J.
General Instrument Corporation
Pyzocha Michael
Wiener Stewart M.
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