Pluggable Cryptography via Cipher Adapter Integration
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Solution Overview
Problem
Conventional operating systems, such as Android, have limited support for proprietary or third-party cryptographic ciphers, requiring new system builds or versions to incorporate new ciphers, which restricts the use of unsupported cryptographic algorithms in transparent key management and disk encryption.
Innovation Solution
The implementation of a cryptographic cipher adapter allows for the integration of third-party or proprietary ciphers into the kernel cryptographic framework without modifying the existing kernel, enabling their use in file system access and metadata management through user space modules and kernel space interactions, allowing for dynamic and flexible inclusion of unsupported ciphers during system startup.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the operating system uses built-in block ciphers only, then the cryptographic framework remains simple and stable, but the ability to support proprietary or third-party ciphers is limited
Solution Approach 1:
A cryptographic cipher adapter is introduced as an intermediary component between the kernel cryptographic framework and third-party ciphers. The adapter translates framework interface calls into cipher-specific operations, enabling proprietary ciphers to integrate without modifying the core framework. This mediator approach allows the system to support multiple cipher types while maintaining framework simplicity and stability.
2Adaptability or versatility
If new system builds or versions are created to incorporate new ciphers, then full cipher support is achieved, but system updates and maintenance become more complex
Solution Approach 1:
The cryptographic system is segmented into independent components: the kernel cryptographic framework, the pluggable cipher modules, and the adapter layer. Third-party ciphers can be added as separate modules that register with the framework through standard interfaces, eliminating the need to rebuild or recompile the core system. This modular segmentation enables flexible cipher addition without complex system-wide changes.
3Reliability
If third-party ciphers are integrated without modifying the kernel, then system stability is maintained, but integration complexity increases
Solution Approach 1:
The cryptographic cipher adapter serves as a mediator that shields the kernel from third-party cipher complexities. The adapter handles all cipher-specific logic and translation, allowing stable kernel code to interact with diverse cipher implementations through a unified interface. This approach maintains system stability while managing integration complexity at the adapter layer rather than in the kernel.
Data Source
AI summary
Mechanisms are provided for allowing pluggable encryption in an operating system. Modules such as proprietary cipher modules connect to a kernel cryptographic framework using cryptographic cipher adapters. Supported cryptographic ciphers as well as proprietary cryptographic ciphers can be used in a transparent manner during file system access, key management, and metadata maintenance operations. Proprietary cipher modules interact with the cryptographic cipher adapters as though the cryptographic cipher adapters are the kernel cryptographic framework. The kernel cryptographic framework interacts with the cryptographic cipher adapters as though the cryptographic cipher adapters are proprietary cipher modules.