Vehicle Network Proof-of-Work via Latency Verification
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Solution Overview
Problem
Existing Proof-of-Work concepts in vehicle networks are vulnerable to Denial-of-Service attacks and lack effective measures to ensure cybersecurity and functional safety, particularly due to reliance on computational power and susceptibility to quantum computer attacks.
Innovation Solution
A Proof-of-Work concept utilizing vehicle-specific characteristics such as latency and network topology, where control units verify messages by determining if they fall within predetermined latency windows, ensuring authenticity and integrity of messages within the network, thereby preventing unauthorized access and attacks.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If computational power-based PoW is used, then DoS attack prevention is achieved, but vulnerability to quantum computer attacks increases
Solution Approach 1:
The patent replaces computational power-based PoW (mechanical/computational system) with latency-based PoW (physical timing system). Instead of requiring intensive cryptographic hash calculations, the system uses the physical property of signal transmission latency through the vehicle network, which cannot be accelerated by quantum computers. The latency measurement serves as the proof-of-work verification mechanism.
2Reliability
If cryptographic hash puzzles are used, then PoW verification is achieved, but processing time requirements increase
Solution Approach 1:
The patent substitutes cryptographic hash puzzle computation with direct latency measurement. Instead of requiring nodes to perform numerous hash calculations to find a valid nonce, the system simply measures the time it takes for a message to propagate through the network, which is a direct physical measurement requiring minimal processing time.
Solution Approach 2:
The network itself provides the proof-of-work mechanism through its inherent signal propagation characteristics. The physical latency of message transmission through the vehicle's communication network automatically serves as the PoW, eliminating the need for separate computational verification processes.
3Reliability
If traditional PoW is implemented in vehicle networks, then cybersecurity improvement is achieved, but adaptability to vehicle-specific characteristics is reduced
Solution Approach 1:
The patent tailors the PoW mechanism to the specific local characteristics of vehicle networks by using their deterministic latency properties. Each vehicle network's unique topology, message routing, and transmission characteristics become the basis for its PoW verification, making the security mechanism inherently adapted to that specific vehicle's network architecture.
Solution Approach 2:
The patent changes the PoW parameter from computational difficulty (hash iterations) to physical transmission time (latency). This parameter change allows the system to exploit the deterministic timing characteristics inherent in vehicle networks, where message transmission times are predictable and verifiable based on the network's physical structure.
Data Source
AI summary
A method for providing a Proof-of-Work concept in a vehicle is provided. The vehicle includes a network including at least three control units, where a first control unit sends a first message to a second control unit, the second control unit sends a second message including the first message to a third control unit, and the third control unit determines a Proof-of-Work for the second message based on at least one vehicle-specific characteristics of the network. Also, an corresponding system as well as a vehicle including such system are provided.