Tamper-Sensing Secure Insert for Circuit Card Slots
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Solution Overview
Problem
Electronics systems with proprietary information are vulnerable to unauthorized access and reverse engineering, as existing protective methods can be defeated with sufficient resources and time, necessitating new approaches to detect and thwart such attacks.
Innovation Solution
A secure insert is designed to fit into a chassis's card slot area, featuring a shell with a tamper sensor and bridge connector to detect unauthorized access attempts, allowing selective protection of circuit cards without requiring a full secure chassis, using materials like composite polymers, metals, or ceramics for the shell and fiber optic or electrical sensors for tamper detection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a secure chassis is used to protect all components, then security is improved, but cost and device complexity increase significantly
Solution Approach 1:
The invention divides the protection scope into segments by providing secure inserts for individual card slots rather than protecting the entire chassis. Each secure insert independently protects specific circuit cards, allowing selective protection where needed while leaving other areas vulnerable. This segmentation reduces overall system complexity and cost while maintaining security for critical components.
Solution Approach 2:
The invention applies protection locally to specific card slots containing sensitive circuit cards rather than uniformly protecting the entire chassis. The secure insert is inserted into individual card slots to provide targeted security where proprietary information exists, avoiding the unnecessary complexity and cost of full-chassis protection for non-sensitive areas.
2Reliability
If a secure chassis is used to protect all components, then security is improved, but cost increases
Solution Approach 1:
The invention segments the protection function into separate secure inserts that can be manufactured independently and installed only where needed. This avoids the high cost of manufacturing entirely new secure chassis while providing protection for specific sensitive cards. The modular inserts can be produced at lower cost and selectively deployed.
Solution Approach 2:
The invention provides localized protection only for card slots containing sensitive circuit cards rather than upgrading the entire chassis. This selective approach reduces manufacturing costs by avoiding unnecessary security features in non-sensitive areas while maintaining adequate protection where required.
3Ease of operation
If access panels are removed to gain access, then ease of operation is improved, but security deteriorates
Solution Approach 1:
The secure insert acts as an intermediary protective layer between the circuit card and the external environment. It provides tamper detection and protection without requiring removal of chassis access panels, allowing authorized access while maintaining security through integrated tamper sensors that detect unauthorized removal attempts.
Solution Approach 2:
The secure insert provides self-monitoring through integrated tamper sensors that automatically detect and report unauthorized access attempts. The system serves itself by monitoring its own security status without requiring external surveillance, maintaining security while allowing normal operational access.
Data Source
AI summary
A secure insert comprises a shell including a lid and a container configured to receive and encase one or more circuit cards, wherein the shell is further configured to be inserted into and engage a card slot area of a chassis. A bridge connector is disposed inside the shell and configured to couple the one or more circuit cards to a chassis connector. A tamper sensor is disposed inside the shell and configured to detect unauthorized tamper events.