EMI Fingerprint Detection Using Insertable Device for Unwanted Component Identification

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Solution Overview

Problem

Existing techniques for detecting unwanted electronic components like spy chips and counterfeit components in enterprise computing systems are hindered by the need for precise positioning and orientation of handheld wands, which is impractical for existing systems without integrated antennas, leading to high false-positive and missed alarm rates.

Innovation Solution

An insertable device gathers EMI signals from enterprise computing systems to generate target EMI fingerprints, which are compared to reference fingerprints from certified systems, using a multivariate state estimation model and sequential probability ratio test to detect unwanted components, applicable through USB dongles, PCI cards, or HDD filler packages.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Measurement precision

If a handheld wand with antenna is used to detect unwanted components, then the detection capability is provided, but the position and orientation variability causes high false-positive and missed alarm rates

Engineering Contradiction:

Improvedetection accuracyVSAvoidpositioning requirement

Core Design Contradiction:

Measurement precisionVSEase of operation

Solution Approach 1:

The patent introduces an insertable device as an intermediary between the target system and the detection system. This device includes an antenna that is permanently positioned within the target system, serving as a mediator that eliminates the need for external handheld wands. The insertable device captures EMI signals internally and transmits processed data externally, resolving the positioning and orientation problems of handheld detection methods.

Inventive Principle:

Principle #24Intermediary (Mediator)

Solution Approach 2:

The patent replaces the mechanical handheld wand system with an electronic insertable device system. Instead of manually positioning a physical wand near the target system, the solution uses an electronically integrated device that is inserted into the system's expansion slot. This substitution eliminates the mechanical positioning requirements and enables automated, consistent EMI signal capture.

Inventive Principle:

Principle #28Mechanics substitution (Replace mechanical system)

2Adaptability or versatility

If an EMI-detecting antenna is integrated into newly manufactured enterprise computing systems, then detection of unwanted components is enabled, but existing enterprise computer systems without such antennas cannot be helped

Engineering Contradiction:

Improveapplicability to existing systemsVSAvoidintegration requirement

Core Design Contradiction:

Adaptability or versatilityVSEase of manufacture

Solution Approach 1:

The insertable device is designed with universal compatibility to work across different enterprise computer system configurations. It can be inserted into standard expansion slots in existing systems without requiring manufacturing modifications. The device serves multiple functions: it acts as an EMI antenna, a signal processor, and a data transmitter, making it adaptable to both new and existing systems alike.

Inventive Principle:

Principle #6Universality (Multi-functionality)

3Reliability

If handheld wands are used for EMI-fingerprint detection, then detection is possible, but the variability in position and orientation adversely affects false-positive and missed alarm rates

Engineering Contradiction:

Improvealarm accuracyVSAvoidpositioning control

Core Design Contradiction:

ReliabilityVSDevice complexity

Solution Approach 1:

The insertable device is self-positioned within the target system's expansion slot, eliminating the need for external positioning control. Once inserted, it automatically establishes a fixed, optimal position for EMI signal capture. The device self-configures its antenna orientation relative to the system's internal components, ensuring consistent detection performance without requiring manual positioning or complex control mechanisms.

Inventive Principle:

Principle #25Self-service

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This method effectively detects unwanted components in existing enterprise systems by generating and comparing EMI fingerprints, reducing false positives and missed alarms, and ensuring security assurance across a wide range of computing systems without requiring integrated antennas.

Implementation Method 1

obtains target EMI signals, which were gathered by monitoring EMI signals generated by the target computing system, using an insertable device

Methodology Applied

Scientific EffectElectromagnetic radiation detection: Electromagnetic Induction

Data Source

PatentUS11120134B2Detecting unwanted components in a computer system based on EMI fingerprints obtained through an insertable device

Publication Date: 2021.09.14 ORACLE INT CORP

AI summary

The disclosed embodiments provide a system that detects unwanted electronic components in a target computing system. During operation, the system obtains target electromagnetic interference (EMI) signals, which were gathered by monitoring EMI signals generated by the target computing system, using an insertable device, wherein when the insertable device is inserted into the target computing system, the insertable device gathers the target EMI signals from the target computing system. Next, the system generates a target EMI fingerprint from the target EMI signals. Finally, the system compares the target EMI fingerprint against a reference EMI fingerprint for the target computing system to determine whether the target computing system contains any unwanted electronic components.