发明名称 |
METHOD AND APPARATUS FOR MONITORING PERFORMANCE FOR SECURE CHIP OPERATION |
摘要 |
A method and apparatus is provided for monitoring performance of an processor to detect tampering and place the processor in a safe operating state that prevents unauthorized access to contents of the processor. In one example, the method and apparatus compares a measured value of an operating parameter (i.e., a temperature, supply voltage or clock signal) to predefined limits to identify an out of limits measured value. If an out of limits measured value is detected during a normal operating mode, the processor enters a reset mode, and if an out of limits measured value is detected during power up or reset, the processor in retained a reset mode. |
申请公布号 |
US2015052622(A1) |
申请公布日期 |
2015.02.19 |
申请号 |
US201414282451 |
申请日期 |
2014.05.20 |
申请人 |
Advanced Micro Device, Inc. |
发明人 |
Cabler Carlin Dru;Nussbaum Sebastien;Disauza Leonard;Nix Michael A.;Kosonocky Stephen;Hirsch Thomas |
分类号 |
G06F21/71;G06F1/24 |
主分类号 |
G06F21/71 |
代理机构 |
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代理人 |
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主权项 |
1. A method of monitoring performance of a processor to detect tampering and place the processor in a safe operating state that prevents unauthorized access to contents of the processor, comprising:
during a normal operating mode and at least one of a power up and a reset mode, comparing a measured value of an operating parameter to a predefined set of high and low limits for the measured value to identify an out of limits measured value; and if an out of limits measured value is detected during the normal operating mode, causing the processor to enter a reset mode, and if an out of limits measured value is detected during the at least one of a power up and a reset mode, retaining the processor in a reset mode. |
地址 |
Sunnyvale CA US |