| 摘要 |
The present invention provides a method and apparatus for securing electronic systems, including computers, information appliances and communication devices. The invention in question addresses the problem of preventing compromise by severe attacks directed at the protected systems. A severe attack could mean any of the following: low level debugging, use of in-circuit emulators or logic analyzers, removal of silicon dice and inspection including by lapping and micro-photography, and other well-known methods of attack such as distributed denial of service. In order to protect systems and data from such severe attacks, a mechanism is required whose operation is irreparably altered by the attempt to understand its operation through such attacks. Moreover, the mechanism must cease operation instantly upon detection of any intrusion associated with an attack, whether by software or by hardware based means.
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