Multi layer gridding detector of chip, and method for anti attack

Abstract

A lattice detector consists of metal lattice for providing voltage and detection signal, CPU triggering pin for zero clearing and resetting of storage. The present invention realizes efficient protection of core data by applying protective method of setting metal lattice and detector circuit on safety chip.

Description

technical field [0001] The invention relates to a chip technology of an integrated circuit, in particular to a grid detector structure against external laser cutting attacks and an attack prevention method thereof. Background technique [0002] Integrated circuits (ICs) in the prior art have been widely used in various information carrier fields, but in actual use, many key information are stored in integrated circuits, such as bank account numbers and passwords, or personal privacy In the past, the security of this information was beyond doubt. However, with the development of technology, especially the development of reverse engineering technology after the 1990s, the core data and information stored in IC can be obtained through reverse engineering technology through certain technical means. [0003] According to whether the physical packaging of the smart card chip is damaged, the attack technology of the smart card can be divided into two categories: destructive attack...

AI Technical Summary

Problems solved by technology

[0008] However, in the prior art, there has been a technical means of using laser cutting to break through the metal grid for this kind of metal grid. Therefore, for particularly important core information, the use of laser cutting technology can destroy the metal grid of each layer without causing damage. Destroy the internal structure of the chip, and then use the above technical means to carry out a successful attack

[0009] Therefore, the chip technology of the prior art still cannot effectively protect the chip that stores important core data, and it has technical defects, which need to be improved and developed.

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