Tamper Detection System for Autonomous Vehicle Security
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Solution Overview
Problem
Autonomous vehicles lack effective mechanisms for securely detecting access and tampering within secured areas, which compromises the trustworthiness of onboard systems and poses safety risks for passengers and operations.
Innovation Solution
A tamper detection system is implemented on autonomous vehicles, featuring tamper detection devices within secure enclosures that generate and manage encryption keys, securely discard them upon detection of tampering, and respond to status queries with cryptographically assured responses, ensuring remote attestation of system integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional access detection methods are used in autonomous vehicles, then the system structure remains simple, but the reliability of tamper detection is insufficient and cannot provide cryptographic assurance of system integrity
Solution Approach 1:
A tamper detection device is introduced as an intermediary component between the secured area and the external environment. This device monitors access attempts and generates tamper indicators, which are then processed by a key management system that uses cryptographic key pairs to provide authenticated responses about system integrity, thereby achieving reliable tamper detection through a structured intermediary approach
Solution Approach 2:
Traditional mechanical or electronic access detection mechanisms are replaced with a cryptographic system. Instead of relying on physical sensors alone, the patent uses public-key cryptography where a public key is registered with remote systems and private keys secure tamper detection data, substituting mechanical detection with cryptographic verification to ensure integrity
2Reliability
If cryptographic key pairs are implemented for secure communication, then the trustworthiness of onboard systems is enhanced, but the complexity of key management and regeneration increases
Solution Approach 1:
The key management system is designed to be dynamic rather than static. When tampering is detected through the tamper detection device, the system automatically regenerates new key pairs and invalidates compromised keys. This dynamic key rotation mechanism maintains system trustworthiness while managing complexity through automated responses to security events
Solution Approach 2:
The cryptographic parameters (key pairs) are changed in response to detected tampering events. The system transitions from using initial key pairs to newly generated key pairs when security thresholds are breached, thereby adapting the security parameters dynamically to maintain trustworthiness while managing the complexity of key lifecycle management
3Reliability
If continuous monitoring of secured areas is implemented, then the detection of tampering events is more reliable, but the energy consumption and computational overhead increase
Solution Approach 1:
Instead of continuous monitoring, the system uses periodic status queries where remote computing systems request tamper status information from the autonomous vehicle. The vehicle responds with current tamper indicators and cryptographic verification. This periodic interaction reduces energy consumption compared to continuous transmission while maintaining reliable detection through regular status checks
Data Source
AI summary
Systems and methods are directed to detecting tampering with a secured area of an autonomous vehicle. In one example, a computing system performs operations including generating a first key pair comprising a first private key and a first public key as part of a vehicle registration process; providing the first public key to one or more remote computing systems; determining whether a reset event occurred at a vehicle; in response to determining that the reset event occurred, discarding the first key pair and generating a second key pair comprising a second private key and a second public key; receiving a status query from one of the one or more remote computing systems; generating a response to the status query, the response being signed using either the first private key or the second private key; and providing the response to the one of the one or more remote computing systems.