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Circuit credibility design method based on PUF and fuzzy processing

A technology of fuzzy processing and design method, applied in the direction of electrical digital data processing, special data processing application, calculation, etc., can solve the problems of increasing the difficulty and increasing the difficulty of the attacker to analyze the circuit, so as to increase the difficulty, ensure the anti-duplication characteristics, increase the Great difficulty effect

Active Publication Date: 2019-11-12
PEKING UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This obfuscation method greatly increases the difficulty for the attacker to analyze the circuit, thus increasing the difficulty for the attacker to implant the Trojan horse

Method used

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  • Circuit credibility design method based on PUF and fuzzy processing
  • Circuit credibility design method based on PUF and fuzzy processing
  • Circuit credibility design method based on PUF and fuzzy processing

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The present invention is a circuit reliability design method based on PUF and fuzzy processing, and its steps include:

[0031] Step 1: Insert the PIU structure. Apply 100,000 random vectors to the original circuit, and count the probability that the internal nodes of the circuit are 0 and 1; find out all nodes (such as image 3 Middle A, B and C), analyze the reasons for the small probability of each node and compare figure 1 and 2 Insert the correspond...

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Abstract

The invention discloses a circuit credibility design method based on PUF (Physical Unclonable Function) and fuzzy processing. Specifically, an additional circuit structure is added to an original circuit in the chip design process, so that the original circuit has the capabilities of copy prevention and Trojan attack resistance. The additionally added circuit structure mainly comprises two parts.A first part is a fuzzy circuit consisting of an FSM (finite state machine) and a plurality of PIUs (Probability-Improving-Unit, that is, probability improvement unit). The second part is an anti-copycircuit consisting of a PUF and an FSM. By sharing one FSM structure, the problems of illegal copying, excessive production, Trojan attack and the like in the chip production process are effectivelysolved with low circuit overhead, and the method is an effective circuit credibility design method.

Description

technical field [0001] The invention relates to the technical field of semiconductor integrated circuit design and testing, in particular to a circuit reliability design method based on PUF and fuzzy processing. Background technique [0002] In recent years, with the rapid increase in the scale of integrated circuits, the globalization of chip design and manufacturing is more and more in line with the trend of the times. In order to shorten the time to market of chips and reduce manufacturing costs, IC manufacturers have to hand over the designed layout to third-party manufacturers for tape-out. Untrustworthy third-party manufacturers may pose a great threat to the security of chips. This threat mainly comes from two aspects: 1. The manufacturer uses the obtained layout to overproduce chips without authorization, and then sells them through illegal channels to achieve their own profits. This situation seriously damages the intellectual property rights and legal interests of...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F21/73
CPCG06F21/73
Inventor 冯建华孟凡翔薛周鹏叶红飞
Owner PEKING UNIV