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Integrated Circuit Bypass Signal Differential Amplification Sampling System and Acquisition Method

A bypass signal and integrated circuit technology, applied in program control system, electrical program control, program control in sequence/logic controller, etc., can solve the problem that the bypass signal noise interference signal cannot be effectively removed, and the bypass signal is not easy to be accurate Acquisition and other issues, to achieve the effect of direct acquisition, improve acquisition accuracy and efficiency, and suppress logic noise

Inactive Publication Date: 2018-03-09
PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a differential amplification sampling system and acquisition method for integrated circuit bypass signals to solve the problems that the bypass signals of integrated circuits are difficult to accurately collect and the noise interference signals in the bypass signals cannot be effectively removed

Method used

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  • Integrated Circuit Bypass Signal Differential Amplification Sampling System and Acquisition Method
  • Integrated Circuit Bypass Signal Differential Amplification Sampling System and Acquisition Method

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Experimental program
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Embodiment 1

[0029] Embodiment 1: Integrated circuit bypass signal differential amplification and sampling system.

[0030] Such as figure 1 As shown, the integrated circuit bypass signal differential amplification and sampling system of the present invention includes two parts: a control unit 7 and an acquisition unit 8. The control unit 7 passes through the first data interface 18 ( figure 2 ) It is connected with the acquisition unit 8 to control the acquisition process of the acquisition unit 8, send out the acquisition interrupt signal, adjust the delay parameters and filter parameters, receive the acquired digital bypass signal, and pass the second data interface 14 ( figure 2 ) Perform data interaction with the host computer and send the collected digital bypass signal to the host computer.

[0031] The control unit 7 can be a separate embedded board card, such as an FPGA board card, etc., or the part of the circuit and the acquisition unit can be integrated on the same board card.

[...

Embodiment 2

[0037] Embodiment 2: Integrated circuit bypass signal differential amplification sampling method.

[0038] The method for differential amplification and sampling of the integrated circuit bypass signal of the present invention includes the following steps:

[0039] a, settings figure 1 with figure 2 The set of integrated circuits shown bypass the signal differential amplification and sampling system.

[0040] b. Select an integrated circuit chip of the same model and same batch as the tested integrated circuit chip, and after it is determined to be a security chip after chip opening, reverse engineering analysis and logic testing, it can be used as a security chip for comparison test; it will be tested The integrated circuit chip is inserted into the first test socket 9 and the security chip is inserted into the second test socket 10.

[0041] c. Lead wires from the first terminal 1 and the second terminal 2 at both ends of the adjustable current-sense resistor 21, and connect to a ...

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Abstract

The invention relates to an integrated circuit bypass signal difference amplification sampling system and an acquisition method. The sampling system comprises a control unit and a collection unit; the control unit is connected to a collection unit through a first data port for controlling the collection process of the collection unit, transmitting a collection stop signal, regulating delaying parameters and filter parameters, receiving collected a digital bypass signals, and performing data interaction with the upper computer through the second data port; the collection unit comprises a first test socket for inserting the detected integrated circuit chip, a second test socket for inserting the safety chip, a difference amplifier, a band pass filter, an analog-to-digital converter and a second data port; and the first test socket and a second test socket are commonly connected to the same set of the periphery circuit. The integrated circuit bypass signal difference amplification sampling system and acquisition method can obtain the dynamic high accuracy bypass signal of the integrated circuit chip, can effectively inhibit the interference of the logic noise, gets rid of the dependence on the high accuracy oscilloscope, and improves the collection accuracy and collection efficiency on the integrated circuit.

Description

Technical field [0001] The invention relates to an integrated circuit detection and processing circuit, in particular to an integrated circuit bypass signal differential amplification sampling system and acquisition method. Background technique [0002] The operation of the integrated circuit will cause current fluctuations and electromagnetic radiation, which are called the side channel signal (Side Channel Signal) of the integrated circuit. Experiments have proved that the change of the bypass signal is closely related to the internal structure of the integrated circuit. Once the internal structure of the integrated circuit changes due to aging, defects, interference, tampering, etc., the corresponding bypass signal will inevitably change accordingly. Therefore, by using methods such as pattern recognition to analyze the changes in the bypass signal, it is possible to detect subtle changes that occur within the integrated circuit. [0003] The acquisition of the bypass signal i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/04
CPCG05B19/04G05B2219/26
Inventor 陈开颜李雄伟张阳李艳谢方方韩月霞王骁晗
Owner PEOPLES LIBERATION ARMY ORDNANCE ENG COLLEGE
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