Memory Storage Data Transfer After Encryption Disable
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Solution Overview
Problem
Memory storage devices with default-activated encryption functions often fail to transfer encrypted data for recovery due to lack of user passwords, leading to data recovery failures when external vendors attempt to transfer data to new devices.
Innovation Solution
A method and device that disable the default encryption function, allowing for the storage of encryption information using customized commands, enabling the use of old user passwords for data decryption after transfer.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If automated data encryption is activated by default in memory storage devices, then data security is improved, but data recoverability by external vendors deteriorates due to lack of user password
Solution Approach 1:
The patent extracts the encryption information from the encrypted data storage and stores it separately in a distinct memory region. This separation allows external vendors to access the encryption information without needing the user password, while the encrypted data remains secure. The encryption information is stored in a dedicated area that can be read by specialized commands, enabling data recovery while maintaining security for normal access scenarios.
2Productivity
If encrypted data is forcibly transferred to another device, then data transfer is achieved, but data recovery fails because the old user password cannot be used due to lack of original encryption information
Solution Approach 1:
The patent performs preliminary action by storing the encryption information in the memory storage device before data transfer occurs. The encryption information is pre-stored in a dedicated memory region that can be extracted during data transfer. This ensures that when encrypted data is transferred to another device, the encryption information is also transferred, enabling the old user password to continue working and ensuring data recovery success.
3Ease of operation
If encryption information is stored using normal read commands, then data accessibility is improved, but security deteriorates because encryption information becomes readable by normal commands
Solution Approach 1:
The patent applies local quality by creating different access characteristics for different regions of the memory storage device. The encryption information is stored in a specific memory region with specialized access properties - it can be read by specialized commands for data recovery purposes, but remains protected from normal read commands. This localized differentiation allows selective accessibility: easy access for authorized recovery operations, but restricted access for normal operations, thereby maintaining both accessibility and security.
Data Source
AI summary
A data transfer method includes: instructing a first memory storage device to disable a data encryption function activated by default; and sending a write command to the first memory storage device under a status that the data encryption function of the first memory storage device is disabled. The write command instructs a storing of encryption information of encrypted data to the first memory storage device. The encryption information is not generated by the first memory storage device and is unreadable by a normal read command.