Invention Grant
US07533274B2 Reducing the boot time of a TCPA based computing system when the core root of trust measurement is embedded in the boot block code
失效
当信任测度的核心根源嵌入引导块代码时，减少基于TCPA的计算系统的启动时间
- Patent Title: Reducing the boot time of a TCPA based computing system when the core root of trust measurement is embedded in the boot block code
- Patent Title (中): 当信任测度的核心根源嵌入引导块代码时，减少基于TCPA的计算系统的启动时间
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Application No.: US10712237Application Date: 2003-11-13
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Publication No.: US07533274B2Publication Date: 2009-05-12
- Inventor: Joseph Wayne Freeman , Steven Dale Goodman , Randall Scott Springfield
- Applicant: Joseph Wayne Freeman , Steven Dale Goodman , Randall Scott Springfield
- Applicant Address: US NY Armonk
- Assignee: International Business Machines Corporation
- Current Assignee: International Business Machines Corporation
- Current Assignee Address: US NY Armonk
- Agency: Carey Rodriguez Greenberg & Paul LLP
- Agent Jason O. Piche, Esq.; Steven M. Greenberg, Esq.
- Main IPC: G06F9/24
- IPC: G06F9/24 ; G06F9/22 ; G06F9/30
Abstract:
A method, computer program product and system for reducing the boot time of a TCPA based computing system. A flash memory in the TCPA based computing system may include a register comprising bits configured to indicate whether the segments of the flash memory have been updated. The flash memory may further include a table configured to store measurements of the segments of the flash memory. The flash memory may further include a boot block code that includes a Core Root of Trust for Measurement (CRTM). The CRTM may read the bits in the register to determine if any of the segments of the flash memory have been updated. The CRTM may further obtain the measurement values in the table for those segments that store the POST BIOS code that have not been updated thereby saving time from measuring the POST BIOS code and consequently reducing the boot time.
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