Radar Authentication Using Output-Data Fingerprints Against Key Leakage
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Solution Overview
Problem
The reliability of radar identity authentication is currently low due to low information storage security and the vulnerability of keys in existing radar authentication methods, making them prone to leakage.
Innovation Solution
A radar authentication method that uses a prediction model trained on output data from a target radar to authenticate the identity of a to-be-authenticated radar without requiring keys to be preset in the radar, by comparing predicted data with actual output data using a fingerprint-based approach.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If digital certificate and digital signature method is used for radar authentication, then authentication reliability is improved, but information storage security deteriorates due to key leakage vulnerability
Solution Approach 1:
The patent extracts the authentication verification process from the radar device itself and relocates it to an external server. The server holds the master key and performs all cryptographic operations, while the radar only needs to provide biometric data and receive verification results. This extraction eliminates the need for the radar to store sensitive cryptographic keys, thereby resolving the key leakage vulnerability while maintaining authentication reliability.
Solution Approach 2:
The patent introduces a server as an intermediary between the radar device and the authentication verification process. The server acts as a trusted third party that holds the master key and performs all security-critical operations. This intermediary approach allows the radar to authenticate users without needing to store or handle sensitive cryptographic materials, thus improving information storage security while maintaining authentication reliability.
2Ease of operation
If keys are preset in the radar for authentication, then authentication function is enabled, but security deteriorates due to low information storage security
Solution Approach 1:
The patent extracts the key storage and management functions from the radar device and relocates them to an external server. The radar device is left with only the necessary authentication interface that collects biometric data and receives verification results. This extraction enables the authentication function to work while eliminating the security vulnerability of storing keys in the radar's low-security storage environment.
Solution Approach 2:
The patent implements a system where the server performs self-service by automatically managing the master key and performing all cryptographic verification operations without requiring the radar to store or handle sensitive materials. The radar simply provides biometric input and receives authentication results, enabling the authentication function while maintaining high security through automated server-side key management.
3Device complexity
If traditional authentication methods are used, then implementation simplicity is maintained, but security deteriorates due to vulnerability to attacks
Solution Approach 1:
The patent introduces a server as an intermediary that handles all security-critical operations including master key storage and cryptographic verification. This intermediary approach maintains implementation simplicity from the radar's perspective (it only needs to collect biometric data and display results) while dramatically improving security by removing attack vectors related to embedded key storage and processing in the radar device.
Data Source
AI summary
A radar authentication method includes after obtaining output data of a to-be-authenticated radar, a computer device that first invokes a prediction model to obtain predicted data of the to-be-authenticated radar based on the output data of the to-be-authenticated radar, where the prediction model is obtained through training based on output data of a target radar. Then the computer device verifies, based on the predicted data of the to-be-authenticated radar and the output data of the to-be-authenticated radar, whether the to-be-authenticated radar and the target radar are the same radar.