Data Bus Component Cryptographic Functionality Standardization
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Solution Overview
Problem
Current cryptographic systems in industrial settings, such as motor vehicles, face challenges in ensuring consistent and verifiable cryptographic functionality across diverse components, as different suppliers implement varying protection methods without standardized key lengths and protocols, leading to increased development overhead and security risks.
Innovation Solution
A component for connecting to a data bus that implements cryptographic functionality using a specified selection of cryptographic functions, methods, and protocols adapted to the component's performance, with defined minimum key lengths, ensuring a consistently high level of protection that is easily verifiable and adaptable to the component's requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If different suppliers implement varying protection methods without standardized key lengths and protocols, then cryptographic functionality can be adapted to specific component requirements, but development overhead increases and verification becomes difficult
Solution Approach 1:
The patent segments cryptographic functionality into standardized building blocks (cryptographic functions, methods, protocols) that can be independently selected and combined. This allows adaptation to specific component requirements while maintaining standardized interfaces and verification procedures, thereby reducing development overhead.
Solution Approach 2:
The patent establishes standardized parameters (key lengths, function selections, protocol versions) that define cryptographic configurations. These standardized parameters enable consistent verification across different components while still allowing selection of appropriate cryptographic strength levels based on component performance characteristics.
2Reliability
If a wide range of cryptographic functions and protocols are made available, then cryptographic security can be enhanced, but the complexity of managing and verifying cryptographic functionality increases
Solution Approach 1:
The patent divides the cryptographic system into discrete, standardized components (functions, methods, protocols) with clearly defined interfaces. This segmentation allows comprehensive cryptographic functionality to be available while simplifying management through modular selection and standardized verification procedures.
Solution Approach 2:
The patent creates a universal framework with standardized interfaces and verification methods that work across all cryptographic functions and protocols. This universal approach allows diverse cryptographic capabilities to be managed through consistent procedures, reducing the complexity of managing multiple cryptographic implementations.
3Productivity
If cryptographic key lengths are not standardized, then key length can be optimized for specific component performance, but verification of cryptographic protection levels becomes difficult
Solution Approach 1:
The patent establishes standardized parameter ranges (minimum and maximum key lengths) that are tailored to different component performance classes. This allows optimization of cryptographic key lengths for specific component capabilities while maintaining standardized verification criteria within each performance class, ensuring consistent security assessment.
Data Source
AI summary
A component for connecting to a data bus wherein the component implements at least one cryptographic functionality. Also disclosed is a method for implementing a cryptographic functionality in such a component. The implementation of the cryptographic functionality is based on a specified selection of cryptographic functions, methods and protocols adapted to the performance of the component, wherein minimum lengths are defined for the respectively used cryptographic keys.