Cross-Region Data Replication With Independent Regional Encryption
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Solution Overview
Problem
Distributed data storage systems face challenges in coordinating encryption across regions, leading to increased complexity and potential performance degradation due to failures at individual storage locations, as each region may require independent encryption schemes without interfering with other regions.
Innovation Solution
Implementing independent encryption for cross-region data set replication, where each region manages its own encryption hierarchy using region-specific keys, allowing each database to independently encrypt and decrypt data updates without affecting other regions, and ensuring consistent data access even in the event of failures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If centralized encryption coordination is used across regions, then encryption consistency is improved, but system complexity and failure sensitivity increase
Solution Approach 1:
The patent divides the encryption system into independent regional encryption hierarchies. Each region (e.g., us-east-1, us-west-2) maintains its own encryption keys and encryption/decryption operations, eliminating the need for centralized coordination while ensuring consistent encryption behavior within each region. This segmentation resolves the contradiction by reducing coordination complexity while maintaining encryption consistency locally.
Solution Approach 2:
The patent implements region-specific encryption keys and encryption hierarchies tailored to each region's requirements. Each region can use different encryption keys and policies suited to its local needs, improving encryption consistency for regional data while avoiding the complexity of global coordination. The local quality principle allows each region to optimize its encryption independently.
2Reliability
If independent encryption schemes are implemented per region, then system resilience is improved, but encryption coordination difficulty increases
Solution Approach 1:
The patent segments the encryption system into independent regional units, where each region manages its own encryption hierarchy. This segmentation improves resilience by allowing regions to operate independently during failures, while the standardized interface for key exchange and data format consistency reduces the actual coordination complexity despite the independence.
Solution Approach 2:
The patent creates a universal encryption framework that works across all regions through standardized protocols for key exchange, data formatting, and error handling. This universality allows independent encryption schemes to coordinate seamlessly through common conventions, reducing the complexity of managing multiple independent systems.
3Reliability
If cross-region data replication is implemented, then data availability is improved, but encryption performance degradation occurs
Solution Approach 1:
The patent segments encryption operations by region, allowing data to be encrypted independently in each region without requiring coordination during replication. Each region encrypts data locally using its own keys, and the encrypted data is replicated to other regions without additional encryption/decryption overhead, maintaining encryption performance while enabling cross-region availability.
Solution Approach 2:
The patent performs encryption operations preliminarily within each region before data replication occurs. By encrypting data locally in the source region and then replicating the encrypted data to other regions, the system avoids performance-degrading encryption operations during the replication process itself, thus maintaining encryption performance while achieving data availability.
Data Source
AI summary
A write to a data set may be replicated across regions using independent encryption. Replicated writes are encrypted using payload keys specific to regions. Payload keys can be encrypted and be shared between regions using respective hierarchies of keys for each region, including shared public keys of public-private key pairs.