Cable Security via Hardware Memory Hash Verification
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Solution Overview
Problem
Existing technologies fail to effectively detect and prevent counterfeiting of cables, particularly those used with host devices like switches, as counterfeit cables can be easily forged by copying memory content, leading to revenue loss and brand damage for legitimate manufacturers.
Innovation Solution
Incorporating a cable transceiver with a hardware memory device storing a hash value based on unique parameters like serial number, data code, and physical attributes, and a challenge-response module using microcontrollers or hardware security modules to verify cable authenticity, ensuring each cable has a unique identifier that only the legitimate manufacturer can produce.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If traditional memory content is used for cable identification, then cables can be easily manufactured and deployed, but counterfeit cables can be easily forged by copying memory content
Solution Approach 1:
The patent applies preliminary action by pre-provisioning each cable with a hardware memory device containing a unique identifier and cryptographic credentials during the manufacturing process. This pre-established security infrastructure enables authentication before the cable is even deployed, preventing counterfeit cables from being successfully verified in the network.
Solution Approach 2:
The patent introduces an intermediary cryptographic verification mechanism between the cable and the switching device. The hardware memory device acts as a trusted intermediary that mediates authentication by providing cryptographic proof of authenticity, thereby resolving the contradiction between easy manufacturing and reliable verification.
2Reliability
If hardware memory devices with cryptographic verification are added to cables, then cable authenticity can be verified, but cable complexity and manufacturing cost increase
Solution Approach 1:
The patent applies segmentation by separating the security functionality into a dedicated hardware memory device that is distinct from the main cable transmission functionality. This modular approach allows the authentication mechanism to be implemented independently, reducing overall system complexity while maintaining verification capabilities.
Solution Approach 2:
The hardware memory device provides self-service authentication capabilities, meaning the cable itself carries and verifies its own authenticity credentials without requiring external authentication infrastructure. This self-contained approach reduces system complexity by eliminating the need for centralized authentication servers or additional verification hardware.
3Reliability
If unique cryptographic identifiers are implemented in each cable, then counterfeiting is prevented, but manufacturing precision requirements increase
Solution Approach 1:
The patent replaces mechanical precision requirements with cryptographic mathematical operations. Instead of relying on precise physical manufacturing tolerances, the system uses hash functions and cryptographic algorithms that provide deterministic uniqueness based on input data, thereby reducing manufacturing precision requirements while maintaining counterfeit prevention effectiveness.
Data Source
AI summary
A device including a cable transceiver including cable electrical connections including data electrical connections and control electrical connections, and a hardware memory device, the hardware memory device storing a string identifying a cable and being electrically accessible from externally to the cable transceiver via the control electrical connections. The cable, in electrical connection with the cable electrical connections, may be included in the device. A device for verifying cable authenticity is also described, the device including interface hardware for interfacing a plurality of cables with the device, and verifier circuitry configured to verify that each of the plurality of cables is genuine based on a string stored in a hardware memory device included in each of the plurality of cables. Related apparatus and methods are also described.