Power Source Authentication for Secure PoE Delivery
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Solution Overview
Problem
Current power systems lack effective methods to uniquely identify power suppliers and consumers, leading to potential unauthorized power consumption and theft, especially with the increasing use of high-power Class 4 systems and Power over Ethernet (PoE) technologies.
Innovation Solution
Implementing a system that uses hardware-protected credentials and authentication protocols to verify the identity of devices requesting power, ensuring only authorized devices receive power and tracking power consumption to prevent unauthorized usage through a secure accounting system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Power
If power systems use high-power Class 4 systems and PoE technologies without authentication, then power delivery capability is improved, but unauthorized power consumption and theft increase
Solution Approach 1:
The patent implements authentication protocols that verify device identities before power delivery is initiated. Hardware-protected credentials are validated in advance, ensuring only authorized devices receive power. This preliminary verification prevents unauthorized power consumption while maintaining high power delivery capability for authenticated devices.
Solution Approach 2:
The patent employs accounting systems that continuously monitor and track power consumption by authenticated devices. This feedback mechanism compares actual power usage against authorized allocations, enabling real-time detection and prevention of power theft. The system adjusts power delivery based on verification results, maintaining security without compromising legitimate power needs.
2Reliability
If authentication protocols are implemented to verify device identity, then power security is improved, but system complexity increases
Solution Approach 1:
The patent integrates authentication and accounting functions into existing power delivery infrastructure, allowing the same communication channels and processing resources to serve multiple purposes. The authentication protocol leverages existing device identification mechanisms, and the accounting system uses the same communication pathways for monitoring, reducing overall system complexity despite adding security functionality.
Solution Approach 2:
The patent introduces standardized authentication intermediaries that mediate between power suppliers and consumers. These intermediaries handle the complex verification processes using hardware-protected credentials, shielding the main power delivery system from complexity while ensuring secure power allocation. The intermediary layer manages authentication state and coordinates power delivery without requiring complex modifications to existing devices.
Data Source
AI summary
A power source that supplies power to authorized computing devices generates a query requesting the power usage of the computing devices over a predetermined time period. Each computing device receives the query and provides a response with an indication of the measured or estimated power usage during the predetermined time period. The power source adds up the power usage of each authorized computing device to determine a difference between the reported power usage and the power supplied to the authorized computing devices. The power source may mitigate any discrepancy by cutting off power to ports that are providing more power than is being reported as consumed by the authorized computing devices.