EV Charging Authentication via Image Feature Transformation
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Solution Overview
Problem
Current authentication methods for electric vehicle charging, such as RFID cards, transmit sensitive identification features to multiple servers, raising data protection concerns and enabling unauthorized data collection and profile creation.
Innovation Solution
The procedure involves forming an image feature from the user's identification feature using an assignment regulation and transmitting this image feature to authentication centers, where it is verified against a second image feature, ensuring only registered users can authenticate and preventing abusive data use by contractual partners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the original identification feature is transmitted to multiple authentication servers, then authentication can be performed across multiple contractual partners, but data protection is compromised and unauthorized data collection becomes possible
Solution Approach 1:
The patent introduces an intermediary transformation process that converts the original identification feature into an image feature through assignment regulations before transmission to authentication servers. This intermediary step protects the original identification feature while enabling authentication, as the image feature serves as a safe intermediary that can be shared without exposing sensitive data.
Solution Approach 2:
Instead of transmitting the original identification feature, the system creates a copy in the form of an image feature through assignment regulations. This copy contains sufficient information for authentication purposes but lacks the sensitivity of the original identification feature, allowing multiple servers to authenticate users without accessing protected data.
2Adaptability or versatility
If multiple servers receive the identification feature for authentication, then users can access charging points with different contractual partners, but user profiles can be created without user awareness or consent
Solution Approach 1:
The image feature acts as an intermediary that enables multi-partner authentication while preventing privacy loss. The transformation through assignment regulations ensures that servers receive authentication-capable data without accessing personally identifiable information, thus maintaining user privacy while enabling versatile access.
Solution Approach 2:
The system extracts only the necessary authentication information from the original identification feature through assignment regulations, creating an image feature that contains minimal required data. This extraction process removes sensitive personal information while retaining authentication functionality, preventing unauthorized profile creation.
3Adaptability or versatility
If the identification feature is transmitted to all known servers via multicast or unicast requests, then authentication can be attempted with all contractual partners, but data transmission volume and processing complexity increase
Solution Approach 1:
The system creates a transformed copy (image feature) of the identification feature that can be efficiently transmitted to multiple servers. This copy enables parallel authentication attempts with all contractual partners without requiring complex coordination, as each server independently processes the image feature through its own assignment regulations.
Data Source
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AI summary
To authenticate a user at a charging point, authentication methods, in particular charging cards or RFID cards, are typically used. An identification feature stored on the charging card is currently transmitted to a large number of potential contractual partners to achieve authentication by an authorized partner. The present invention discloses a more data-efficient method for authorizing a charging process, which technically prevents or limits the misuse of identification features by a contractual partner. In contrast to currently common methods, an image feature is transmitted to the large number of potential contractual partners for authentication according to the invention, instead of the identification feature.Authentication is not performed by comparing the identification features in "plaintext," but rather by comparing the representational features, which are, for example, available as cryptographic hash values of the identification features. This prevents unauthorized access to the identification features. The invention describes two variants in which the comparison of the representational features takes place either at the charging point or at an authentication point of the contractual partner.