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Methods and circuits for protecting integrated circuits from reverse engineering
Methods and circuits for protecting integrated circuits from reverse engineering
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机译:用于保护集成电路免受逆向工程的方法和电路
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摘要
A camouflage circuit instantiated on a semiconductor substrate includes a transient-comparison circuit that briefly expresses a value representative of either a one or a zero in dependence upon reference elements that are visibly indistinct from a perspective normal to the planar surface substrate surface, but that nevertheless exhibit distinct electrical responses. Transient comparisons that define logic states only briefly vastly complicate the use of reverse-engineering tools and techniques that rely on optical stimulation to sense when transistors are on or off.
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