Cloud Key Management for Data Storage Security
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Solution Overview
Problem
Existing data protection methods for storage devices, such as SSDs and memory cards, are flawed as they rely on physical storage of AES keys, making data vulnerable to theft or loss, and lack effective security measures to prevent unauthorized access or usage.
Innovation Solution
A data protection system that utilizes a cloud management platform to securely store and manage AES keys, where the data storage device communicates with the platform to retrieve the key via a network, allowing only registered IP addresses to access the data and enabling remote locking or destruction of the device if unauthorized access is detected.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the AES key is stored in a specific data block or chip of the data storage device, then the encryption and decryption process is simple and fast, but the data protection is flawed as anyone can easily access the data when the device is pulled out of the host, and the key may be lost or damaged
Solution Approach 1:
The AES key is extracted from the data storage device and stored externally in a cloud-based key management system. The key is separated from the encrypted data, allowing the device to be pulled out of the host without risking key exposure. The key remains protected in the cloud and can be retrieved when needed for decryption.
Solution Approach 2:
A cloud-based key management system acts as an intermediary between the data storage device and the host. The system manages key storage, retrieval, and distribution securely, eliminating the need for physical key storage in the device while enabling encryption/decryption operations through secure key delivery.
2Ease of operation
If the AES key is stored in a software protection dongle, then the key can be extracted by the controller when the dongle is inserted, but the data cannot be accessed if the dongle is lost or damaged
Solution Approach 1:
The key storage function is extracted from physical dongles and relocated to a cloud-based system. The key management system provides automated key delivery to authorized devices, eliminating the need for physical dongles while ensuring continuous data accessibility through secure key retrieval via network communication.
Solution Approach 2:
The cloud-based key management system serves multiple functions: secure key storage, automated key distribution to authorized devices, key retrieval upon request, and continuous availability through network access. This universal system replaces the limited functionality of physical dongles.
3Reliability
If the data storage device communicates with the cloud management platform to retrieve the key, then the key is disposed in the cloud to avoid loss and the data protection is improved, but the system complexity increases and network dependency is introduced
Solution Approach 1:
A cloud-based key management platform serves as an intermediary that handles key storage and distribution. The platform receives key extraction requests from data storage devices, verifies authorization, and delivers keys securely. This centralized intermediary simplifies the overall system architecture while enhancing security.
4Reliability
If the cloud management platform tracks the physical IP address of the data storage device, then the usage location can be positioned and unauthorized usage can be inhibited, but the monitoring complexity and processing overhead increase
Solution Approach 1:
The cloud management platform continuously monitors the physical IP address of data storage devices and provides feedback on their location and usage status. The system compares current IP addresses against registered locations, automatically detects unauthorized movements or usages, and triggers appropriate security responses such as key revocation or device locking.
Data Source
AI summary
A data protection system is disclosed. The data protection system comprises a cloud management platform and at least one data storage device. The cloud management platform includes a database stored with at least one key. The data storage device includes a data storage unit, a microprocessor, and a network communication component. The microprocessor is communicated with the cloud management platform by the network communication component. The data storage unit comprises a controller and a plurality of flash memories. The flash memories store a plurality of encrypted data. The microprocessor sends a key extraction request including a unique code to the cloud management platform. The cloud management platform selects the key matching to the unique code in the key extraction request from the database, and transmits the selected key to the data storage device. The controller of the data storage device decrypts the encrypted data by the key.