Method and apparatus for improving computer security
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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N/A
Issued Date -
Apr 27, 2006
app pub date -
Oct 23, 2004
filing date -
Oct 23, 2004
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Indicating when the cover for a computer chassis has been opened is disclosed. A computer of an embodiment of the invention includes a chassis and a basic input/output system (BIOS), or another type of firmware. The chassis has an openable cover, and circuitry indicating when the openable cover has been opened. The BIOS has a non-volatile memory in which a flag is set when the circuitry indicates that the openable cover has been opened. The computer may further include always-on circuitry, such as time-of-day and real-time clock circuitry, to which the circuitry indicating when the openable cover has been opened is electrically connected. The computer may also include one or more encryption and/or signing modules that encrypt and/or sign data according to one or more keys. The keys are rendered invalid when the cover of the chassis has been opened.
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