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    • 1. 发明申请
    • Method and apparatus for improving computer security
    • 提高计算机安全性的方法和装置
    • US20060090085A1
    • 2006-04-27
    • US10971258
    • 2004-10-23
    • Paul McKenneyPaul LandsbergJames WardAndrew Kegel
    • Paul McKenneyPaul LandsbergJames WardAndrew Kegel
    • G06F12/14
    • G06F21/86G06F2221/2143
    • 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.
    • 指出计算机机壳盖何时已打开。 本发明实施例的计算机包括底盘和基本输入/输出系统(BIOS)或其他类型的固件。 机箱具有可打开的盖子,电路指示何时打开盖子。 BIOS具有非易失性存储器,当电路指示可打开的盖已经打开时,其中标志被置位。 计算机可以进一步包括始终在线的电路,例如时间和实时时钟电路,电路指示何时可打开的盖已经被打开。 计算机还可以包括根据一个或多个密钥加密和/或签署数据的一个或多个加密和/或签名模块。 当机箱的盖子打开时,钥匙将无效。