Dual Encryption Storage for Security-Performance Trade-offs
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Solution Overview
Problem
The use of cache storage devices with primary storage devices to improve system performance is hindered by the performance degradation caused by encrypting data at both locations, which compromises security when using strong encryption-decryption approaches.
Innovation Solution
Implementing different encryption-decryption approaches for the primary and cache storage devices, where the primary storage device uses a more secure but processing-intensive method, and the cache storage device uses a faster but less secure method, ensuring data security and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If data is encrypted at both primary storage device and cache storage device using strong encryption-decryption approaches, then data security is improved, but system performance deteriorates due to processing intensity
Solution Approach 1:
The patent applies different encryption approaches to different storage locations based on their specific characteristics. The primary storage device uses strong encryption-decryption approaches for maximum security, while the cache storage device uses faster but less secure approaches. This local differentiation resolves the contradiction by optimizing security and performance for each specific storage context rather than applying a uniform encryption strategy throughout the system.
2Speed
If cache storage device is used to improve system performance, then data access speed is improved, but data security is compromised when using faster but less secure encryption methods
Solution Approach 1:
The patent changes the encryption parameters (security strength vs. processing speed) based on the storage location and data access patterns. For the cache storage device, it selects encryption parameters that favor speed over maximum security, while the primary storage device uses parameters optimized for security. This parameter adjustment resolves the contradiction by allowing the cache to provide fast access without being constrained by the heavy processing requirements of strong encryption.
3Reliability
If strong encryption-decryption approach is used at primary storage device, then data security is improved, but processing time increases
Solution Approach 1:
The patent performs encryption at the primary storage device before data is transferred to the cache storage device. This preliminary encryption action ensures that data is secured at the primary storage location using strong methods, while subsequent cache operations can use faster decryption approaches. The time-consuming strong encryption is performed in advance, allowing the cache to operate more quickly without compromising overall security.
Data Source
AI summary
A primary storage device stores a first encrypted version of data. The first encrypted version of the data is encrypted in accordance with a first encryption-decryption approach. A cache storage device for the primary storage device stores a second encrypted version of the data. The second encrypted version of the data is encrypted in accordance with a second encryption-decryption approach different than the first encryption-decryption approach.