Secure Server Migration Using Customer-Managed Encryption
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Solution Overview
Problem
Customers face challenges in securely migrating servers from on-premises data centers to cloud computing service providers due to concerns about data security, compliance with regulations, and the need for end-to-end encryption across multiple platforms and data centers.
Innovation Solution
A server migration service that uses customer-provided encryption keys to encrypt and decrypt replication data during migration, ensuring secure data transfer and storage, with the assistance of backup proxies and key management services, and logging/auditing services for compliance and visibility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If servers are migrated from customer networks to service provider systems, then cloud computing resources and scalability are improved, but data security and compliance concerns worsen
Solution Approach 1:
The system performs preliminary encryption of replication data at the customer network before transmission to the service provider system. Encryption keys are obtained and data is encrypted in advance during the backup process, ensuring data security is established before migration occurs.
Solution Approach 2:
A backup proxy acts as an intermediary component that facilitates secure data transfer between the customer network and service provider system. The backup proxy obtains encryption keys, encrypts replication data, and manages the migration process, serving as a trusted mediator that maintains security throughout the migration.
2Reliability
If end-to-end encryption is implemented during server migration, then data security is improved, but system complexity and key management requirements worsen
Solution Approach 1:
The backup proxy autonomously obtains encryption keys from the key management service and performs encryption operations without requiring manual intervention. The system self-manages the key acquisition and encryption process, reducing operational complexity despite the cryptographic operations.
Solution Approach 2:
The key management service provides feedback mechanisms that allow the backup proxy to obtain and manage encryption keys systematically. The logging and auditing services provide feedback on key usage and migration status, enabling controlled key management despite the complexity of end-to-end encryption.
3Manufacturing precision
If replication data is encrypted and decrypted during migration, then data integrity is improved, but migration time and processing overhead worsen
Solution Approach 1:
Encryption is performed preliminarily during the backup phase before data migration begins. By encrypting data in advance rather than during transmission or at the destination, the system minimizes the time encryption operations add to the overall migration process.
Solution Approach 2:
The encryption and decryption operations are integrated into the continuous data flow of the migration process rather than being separate batch operations. The backup proxy continuously encrypts replication data as it is generated, maintaining continuous useful action throughout the migration.
4Ease of operation
If customer-provided encryption keys are used, then customer control and compliance visibility are improved, but key management service requirements and system overhead worsen
Solution Approach 1:
The key management service acts as an intermediary that bridges customer control requirements with the technical key management needs. Customers can provision and manage their encryption keys through the key management service interface, maintaining control while the service handles the complex key storage, distribution, and rotation operations.
Solution Approach 2:
The logging and auditing services provide feedback to customers about key usage and migration activities, enabling compliance visibility. This feedback mechanism allows customers to monitor and control their encryption keys and migration processes without directly managing the underlying key infrastructure.
Data Source
AI summary
Techniques for securely migrating servers from customer networks into service provider systems are described. A backup proxy can be deployed in a customer's network and associated with one or more servers in the customer's network and with a server migration service of a service provider system. A customer can identify a server in the customer's network to migrate and the server migration service coordinates the migration with the backup proxy. The backup proxy can be instructed to obtain replication data for the server, obtain an encryption key associated with the customer from a key management service (KMS), encrypt the replication data, and upload the encrypted replication data to the service provider system. The service provider system can obtain the same encryption key used to encrypt the replication data from the KMS and decrypt the uploaded encrypted replication data to generate migrated server resources at the service provider system.