Tamper Protection Carrier With Self-Modifying Memory
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Solution Overview
Problem
Existing tamper protection methods for field devices require continuous monitoring to detect physical manipulations, which is costly and inefficient, and may not reliably prevent reconstruction of tampered components.
Innovation Solution
A tamper protection device with a tamper protection carrier, such as a foil, featuring electronic memories that store security information, which is irreparably modified upon physical manipulation, allowing detection without continuous monitoring and reducing the need for complex sensor systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If continuous monitoring of wire mesh is provided for tamper detection, then reliability of tamper protection is improved, but energy consumption and operational costs increase
Solution Approach 1:
The patent applies preliminary action by pre-defining security information items in the electronic memory that automatically modify upon damage occurrence. Instead of continuously monitoring for tamper events, the system prepares detection capabilities in advance through self-modifying memory elements that trigger immediately when physical damage occurs, eliminating the need for ongoing energy-consuming monitoring operations.
Solution Approach 2:
The electronic memory performs self-service by automatically modifying its stored security information items when physical damage occurs to the tamper protection device. This self-modifying capability eliminates the need for external continuous monitoring systems, as the memory itself serves as both the storage medium and the tamper detection mechanism, reducing energy consumption while maintaining reliability.
2Measurement precision
If complex sensor systems and continuous monitoring are used for tamper detection, then detection capability is improved, but device complexity increases
Solution Approach 1:
The patent extracts the tamper detection function from complex continuous monitoring sensor systems and concentrates it into the electronic memory component. By removing the need for separate monitoring systems and relying solely on the self-modifying security information items in the memory, the solution achieves effective tamper detection while significantly reducing device complexity.
Solution Approach 2:
The electronic memory serves multiple functions: it stores security information items, detects physical damage through self-modification, and provides tamper detection capability. This multi-functionality eliminates the need for separate dedicated sensor systems and monitoring components, reducing overall device complexity while maintaining detection capability.
3Reliability
If wire mesh and continuous monitoring systems are deployed for tamper protection, then security protection is improved, but manufacturing costs increase
Solution Approach 1:
The patent employs disposable electronic memory components that provide tamper detection functionality through their self-modifying security information items. These relatively inexpensive memory elements replace costly continuous monitoring systems and complex sensor arrays, achieving effective security protection while significantly reducing manufacturing costs through the use of affordable, integrated circuit-based solutions.
Data Source
AI summary
The disclosure relates to a tamper protection device for protecting a field device against tampering. The tamper protection device includes a carrier and at least one electronic memory, wherein the at least one electronic memory is disposed in at least one partial area on the carrier, and the at least one electronic memory stores at least one predefinable security information item. The at least one electronic memory is configured to modify the predefinable security information item in the event of at least partial damage to the tamper protection device. The disclosure further relates to a method for producing a field device having a tamper protection device, to a field device comprising a tamper protection device, to a tamper protection system, and to the use of a tamper protection device.