Radio-Navigation Receiver Authenticating Positioning Data
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Solution Overview
Problem
Current radio-navigation systems face threats such as jamming, spoofing, and meaconing, which compromise the integrity of positioning data, and existing authentication methods are inadequate for ensuring the authenticity of positioning data across the entire chain from signal reception to data usage, particularly for third-party service providers.
Innovation Solution
The system employs cryptographic tokens broadcast by radio-navigation signal sources, which are used to digitally stamp and encrypt positioning data, allowing an authentication authority to verify the authenticity of the data packages by checking consistency with the broadcast tokens, and uses secure communication protocols and tamper-proof receivers to protect these tokens.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cryptographic tokens are broadcast and used to digitally stamp positioning data, then the authenticity and reliability of positioning data are enhanced, but the device complexity and security requirements increase
Solution Approach 1:
Cryptographic tokens are generated and broadcast in advance by the authentication authority before positioning data is created. The receiver stores these tokens and uses them to digitally stamp the positioning data before transmission. This preliminary preparation enables authenticating the entire chain from signal reception to data usage without requiring complex real-time authentication systems.
Solution Approach 2:
The cryptographic token acts as an intermediary element that links the radio-navigation signal sources to the positioning data. Instead of directly encrypting the entire positioning data stream, the system uses these tokens as intermediate authentication markers that can be verified by third-party service providers, simplifying the overall security architecture.
2Reliability
If positioning data is digitally stamped with cryptographic tokens, then tampering and falsification are prevented, but the loss of information increases due to encryption and authentication requirements
Solution Approach 1:
The authentication mechanism is segmented into separate components: cryptographic tokens broadcast by the authentication authority, positioning data generated by the receiver, and digital stamping that combines these elements. This segmentation allows the authentication information to be added as a separate layer without encrypting or losing the original positioning data, maintaining full data availability while ensuring integrity.
3Reliability
If third-party service providers need to verify positioning data authenticity, then the reliability of services improves, but the loss of time increases due to authentication verification processes
Solution Approach 1:
Cryptographic tokens are prepared and broadcast in advance by the authentication authority. The receiver performs the digital stamping operation immediately when positioning data is generated, creating an authentication marker that can be verified by third-party service providers without requiring time-consuming real-time authentication processes. This preliminary preparation enables fast verification while maintaining high reliability.
Data Source
AI summary
A method of providing an authenticable time-and-location indication using a radio-navigation signal receiver comprises receiving radio-navigation signals broadcast from a plurality of radio-navigation signal sources, at least some of the radio-navigation signals containing one or more cryptographic tokens protected by encryption, the cryptographic tokens being updated from time to time. The receiver retrieves, by decryption, the cryptographic tokens from the radio-navigation signals containing them. The receiver then determines positioning data, representing its geographical position and time, based on the radio-navigation signals received. The receiver generates a digital authentication code using a cryptographic function taking as inputs at least the positioning data and the retrieved cryptographic tokens, and produces a data package including a first part containing the positioning data and a second part containing the digital authentication code.