Hardware Data Transfer Device Encrypts Keys to Enable Cross-System Recovery
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Solution Overview
Problem
Existing data transfer devices require the same software for encryption and decryption, limiting data recovery to specific systems and increasing backup time and resource consumption, while also being vulnerable to security breaches due to software dependency.
Innovation Solution
A data transfer device that encrypts and decrypts data using a key, transforms the encryption key or reference data through logical operations, and stores encrypted data blocks with a copy of the transformed reference data, allowing secure data transfer and recovery across different systems without software dependency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If software encryption is used to encrypt data prior to backup, then data security is improved, but data recovery is limited to specific systems and backup time increases
Solution Approach 1:
The encryption functionality is extracted from the software and embedded into the data transfer device itself. This allows the device to independently encrypt and decrypt data without requiring the original backup software, resolving the system dependency issue while maintaining security
Solution Approach 2:
The data transfer device acts as an intermediary that performs encryption during data transfer and stores the encryption key within itself. This intermediary role enables data to be encrypted with high security while the device retains the ability to decrypt and transfer data to any system
2Reliability
If software encryption is used to encrypt data prior to backup, then data security is improved, but backup time and computer resource consumption increase
Solution Approach 1:
The software-based encryption process is replaced with hardware-based encryption in the data transfer device. This substitution leverages dedicated encryption circuitry that operates more efficiently than software encryption, improving backup speed while maintaining security
Solution Approach 2:
The encryption function is merged with the data transfer device, combining data transfer and encryption operations into a single integrated process. This eliminates the need for separate software encryption steps, reducing overall backup time and resource consumption
3Reliability
If the same software package is required for both encryption and decryption, then data security is maintained, but system flexibility and ease of operation are reduced
Solution Approach 1:
The data transfer device provides self-service encryption and decryption capabilities, storing the encryption key within itself. This allows the device to independently perform both encryption during backup and decryption during recovery operations, eliminating the need for specific software packages and greatly improving operational convenience
Data Source
AI summary
A data transfer device for transferring data to a removable data storage item. The data transfer device receives content data to be stored to the removable data storage item, encrypts the content data using an encryption key, and transforms at least one of predetermined reference data and the encryption key. The data transfer device also encrypts the transformed predetermined reference data using the encryption key or encrypts the predetermined reference data using the transformed encryption key, and then stores the encrypted content data and the encrypted transformed/predetermined reference data to the removable data storage item.