Connectionless BLE Security for Vehicle Access
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Solution Overview
Problem
Conventional vehicle security systems face challenges in ensuring reliable and secure authentication and distance measurement due to complex connection-based data transmission, which can lead to connection errors and inadequate data integrity, particularly in passive access systems.
Innovation Solution
A security method utilizing connectionless Bluetooth Low Energy data transmission with a security feature, such as a digital signature, for authentication and data integrity, allowing for simplified and secure activation of safety-related functions without complex connection setups, ensuring the integrity and authenticity of data transmission.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If connection-based data transmission is used for authentication, then data integrity and security are improved, but device complexity and operational complexity increase
Solution Approach 1:
The patent extracts the essential security function (authentication and integrity verification) from the complex connection-based transmission framework. By using connectionless Bluetooth Low Energy transmission with embedded security features, the system separates the security verification mechanism from the connection establishment process, eliminating the need for complex connection setups while maintaining data integrity through cryptographic verification of transmitted packets.
Solution Approach 2:
The patent changes the transmission mode parameter from connection-based to connectionless, and modifies the security implementation parameter by integrating security features directly into the data packets. This allows authentication to occur through verification of security features (such as cryptographic signatures) embedded in individual packets rather than through a separate connection establishment phase, reducing complexity while maintaining reliability.
2Ease of operation
If connectionless data transmission is used, then operational simplicity and flexibility are improved, but data integrity protection deteriorates
Solution Approach 1:
The patent applies preliminary action by pre-embedding security features (such as cryptographic signatures or authentication codes) into the data packets before transmission. This allows the receiving system to verify data integrity and authenticate the transmitter without requiring a prior connection establishment, thus maintaining both the simplicity of connectionless transmission and the reliability of data integrity protection through pre-configured security mechanisms.
Solution Approach 2:
The patent introduces security features as an intermediary element that mediates between the simple connectionless transmission and the requirement for data integrity. These security features (such as digital signatures or authentication tokens) act as a intermediary verification mechanism that can be independently validated without requiring a persistent connection, thus enabling both transmission flexibility and integrity protection.
3Ease of operation
If passive access system with connectionless transmission is used, then ease of operation is improved, but authentication reliability deteriorates due to inability to verify data origin
Solution Approach 1:
The patent applies preliminary action by pre-configuring security features in the access device before the authentication process. These pre-configured security features (such as cryptographic keys or authentication credentials) enable the access device to generate verifiable authentication data passively, allowing the vehicle system to reliably verify the device's origin and authenticity without requiring active connection establishment or complex interaction protocols.
Data Source
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AI summary
The invention relates to a safety method (100) for a safety system (200) of a vehicle (1) for activating at least one safety-relevant function in the vehicle (1) by means of at least one data transmission (D) between a portable access device (10) and the vehicle (1).