Anti-cracking circuit

Abstract

The invention provides an anti-cracking circuit, which comprises n anti-cracking units which are connected in parallel and have the same structure, and n is an integer greater than 0; the anti-cracking unit comprises a signal transmission circuit; the signal transmission circuit comprises a phase inverter A1, a resistor string RA connected with the output end of the phase inverter A1, a phase inverter B1, a resistor string RB connected with the output end of the phase inverter B1 and a phase inverter C; the phase inverter A1 and the phase inverter B1 are connected with the output end of the resistor string RB through the output end of the resistor string RA; the input end of the phase inverter C is connected between the resistor string RA and the output end of the resistor string RB; and the surfaces of the resistor string RA, the resistor string RB and the connecting part of the resistor string RA and the resistor string RB are covered with metal M. The anti-cracking circuit providedby the invention is simple in structure, and can prevent other people from obtaining a specific structure and a signal processing rule of the integrated circuit through disassembly and reverse backward pushing.

Description

technical field [0001] The invention belongs to the technical field of integrated circuits, and in particular relates to an anti-cracking circuit. Background technique [0002] With the development of information technology, integrated circuit products can realize more and more functions, and the application scenarios are becoming more and more extensive. In reality, there are incidents of invading and stealing key sensitive information stored inside integrated circuits through technical means to make a profit; there are also incidents where unscrupulous merchants learn the specific structure of integrated circuits by dismantling integrated circuit products designed and manufactured by enterprises, and then counterfeit, The incident of counterfeiting integrated circuit products has brought economic and reputational damage to enterprises. [0003] In the prior art, there is a cap structure on the surface of the integrated circuit chip, and the function of preventing external...

AI Technical Summary

Problems solved by technology

In reality, there are incidents of invading and stealing key sensitive information stored inside integrated circuits through technical means to make a profit; there are also incidents where unscrupulous merchants learn the specific structure of integrated circuits by dismantling integrated circuit products designed and manufactured by enterprises, and then counterfeit, The incident of counterfeiting integrated circuit products brought econo

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