Abstract
Information security of smart grid has received increasing attention with more and more attack incidents. Security chip plays an important role in smart grid, such as in smart meter and electrical terminals. Now security chip is facing great challenges from invasive attacks, which could tamper or steal sensitive information by physical methods. Security shield is considered as a necessary guard to defend invasive attacks on security chips. In this work, a divide-and-conquer and dynamic programming optimized algorithm (DCDPOA) is introduced and a useful tool for security shield generation is developed. A detective mechanism for security shield is also designed and discussed in this work. Then the generated metal shield topology and full-chip layout with active shield are demonstrated. At last, the chip is taped out to manufacture.
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