Verifying a trusted SMI handler

Details Verifying a trusted SMI handler Verifying a trusted SMI handler

2007-09-26

2010-11-30

Du, Thuan N (Department: 2116)

Electrical computers and digital processing systems: support

Digital data processing system initialization or configuration

C713S002000, C713S182000, C713S187000, C713S189000, C710S260000, C712S244000, C714S038110, C726S002000, C726S026000

Reexamination Certificate

active

07844809

ABSTRACT:
A trusted system management interrupt handler may be verified by first locating a signed system management interrupt handler image in system memory. The digital signature of the signed system management interrupt handler image is verified. An existing basic input/output system management interrupt handler is erased and replaced with a new system management interrupt handler image. Then an analysis is done of the system management interrupt handler message is to determine whether to continue to launch.

REFERENCES:
patent: 6715074 (2004-03-01), Chaiken
patent: 6993648 (2006-01-01), Goodman et al.
patent: 7596648 (2009-09-01), Ramgarajan et al.
patent: 7747848 (2010-06-01), Nallagatla et al.

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