Wireless EV Charging Authentication Against Identifier Cloning
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Solution Overview
Problem
Electric vehicles face unauthorized access to charging stations due to cloning of vehicle identifiers and replay attacks, leading to inefficiencies and potential congestion during high-traffic times in public transportation systems.
Innovation Solution
A decentralized system using charge nodes with distributed ledgers and dynamic verification values to authenticate vehicles, employing obfuscation and encryption techniques to verify authenticity and authorize charging requests locally, reducing reliance on centralized platforms.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized authentication platforms are used to verify vehicle identities, then security against cloning attacks is improved, but processing delays and congestion increase during high-traffic times
Solution Approach 1:
The centralized authentication system is segmented into distributed charge nodes that independently perform authentication. Each charge node contains local verification logic and cryptographic keys, allowing it to authenticate vehicles without contacting a central server. This segmentation eliminates the single point of congestion while maintaining security through distributed cryptographic verification.
Solution Approach 2:
Cryptographic verification data and authentication credentials are pre-configured in each charge node before operation. The nodes perform preliminary setup with cryptographic keys and verification algorithms, enabling them to immediately authenticate vehicles without real-time central server communication. This preliminary action eliminates processing delays during high-traffic charging periods.
2Reliability
If dynamic verification values with obfuscation and encryption are implemented, then resistance to replay attacks is improved, but computational complexity increases
Solution Approach 1:
The patent replaces complex mechanical or procedural authentication mechanisms with cryptographic substitution. Instead of using intricate verification procedures, the system uses cryptographic hash functions and encryption algorithms that provide strong security with relatively simple computational operations. The charge nodes use cryptographic keys and hash functions to verify vehicle identities, replacing what would otherwise require complex multi-step verification processes.
Data Source
AI summary
Described herein are techniques for providing authorization of vehicle charging requests in a manner that limits losses to unauthorized parties. Such techniques may comprise receiving, from a charging station, a request to access power resources, the request related to an electric vehicle in proximity of the charging station, providing, to the electric vehicle, a dynamic verification value to be used in authentication of the electric vehicle, and receiving, from the electric vehicle, a transformed version of the dynamic verification value generated by the electric vehicle. The techniques may further comprise independently generating, based at least in part on the dynamic verification value, an expected verification value, and determining whether to authorize the request based on a determination as to whether the transformed version of the dynamic verification value matches the expected verification value.