Method for preventing from active-attacking

Abstract

The invention provides a novel method for resisting active attack. Adopting the method in integrated circuit design can resist active attack to a certain degree and prevent an attacker from carrying out compulsive setting of a working circuit through active mode to change the operating mode of the circuit so as to decipher the circuit. The method adopts the lead wires of a set of serial register clock terminals to be winded irregularly on the top layer of a chip; when an external active probe touches the winding, the chip resets so as to resist external active attack.

Description

technical field [0001] This patent is applied in the field of integrated circuit chip security to prevent attackers from controlling the circuit through active detection, detecting the working process of the internal circuit, and strengthening the security of the chip. Background technique [0002] There are generally two ways to attack integrated circuits. One is active attack, that is, when the circuit is working, by using an active probe to detect the working process of the circuit, the working state of the circuit is forced to bypass the safety protection measures of the circuit. , in order to achieve the purpose of attacking the chip; the other is reverse dissection, which physically analyzes the chip layer by layer and proposes the netlist of the circuit. Although the second attack can fundamentally grasp the structure of the circuit and is more aggressive, the cost of implementation is high, and with the reduction of the process line width, the difficulty of reverse a...

AI Technical Summary

Problems solved by technology

Although the second attack can fundamentally grasp the structure of the circuit and is more aggressive, the cost of implementation is high, and with the reduction of the process line width, the difficulty of reverse attacks is further increased, so attackers often use the first attack method

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