Secure Element Wireless Power Data Destruction
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Solution Overview
Problem
Current methods for data destruction on storage devices, such as physical shredding, are costly and do not effectively prevent information leakage from secure elements when they are extracted.
Innovation Solution
A storage device with a non-volatile memory, a memory controller for encryption and decryption, a secure element for storing key information, and a wireless power receiver to facilitate data destruction by receiving power and performing a destruction operation upon a signal, ensuring secure deletion of data.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If physical shredding is used to destroy storage devices, then data security is improved, but cost increases significantly
Solution Approach 1:
The secure element containing encryption keys is extracted and separately destroyed from the main storage device. This allows the bulk storage device to be disposed of economically while ensuring security through targeted destruction of the critical security component, resolving the contradiction between high security and low cost.
Solution Approach 2:
The system performs preliminary data destruction by destroying the secure element before the storage device is physically disposed of or shredded. This preliminary action ensures data security is already compromised, making subsequent physical destruction unnecessary for security purposes, thereby reducing overall cost.
2Ease of operation
If the secure element is extracted from the storage device, then data can be accessed, but information leakage risk increases
Solution Approach 1:
The system applies preliminary anti-action by automatically destroying the secure element when extraction is detected or anticipated. This pre-emptive measure counteracts the potential information leakage risk before it can materialize, while still allowing legitimate data access during the secured operational phase.
Solution Approach 2:
The potential harm of secure element extraction is converted into a benefit by using the extraction event itself as a trigger for automatic destruction. The extraction attempt, which could lead to leakage, instead initiates a controlled destruction process that ensures security while maintaining operational ease during legitimate use.
3Reliability
If data destruction operation is performed in the secure element, then data security is improved, but device complexity increases
Solution Approach 1:
The secure element performs self-service by automatically executing its own destruction when triggered by extraction detection. This self-destruct capability eliminates the need for external complex destruction mechanisms, maintaining data security while minimizing additional system complexity.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This solution provides a cost-effective and secure method to delete data stored on storage devices, preventing information leakage by ensuring the secure element's destruction and proof of destruction, thus reducing the risk of data exposure.
Implementation Method 1
a wireless power receiver configured to, when the key information of the secure element is destroyed, receive wireless power from an external wireless device and to provide the wireless power to the secure element
Data Source
AI summary
A storage device includes a non-volatile memory device, a memory controller, a secure element, and a wireless power received. The memory controller encrypts data using key information and stores the encrypted data in the non-volatile memory device, or reads the encrypted data from the non-volatile memory device, decrypts the read encrypted data using the key information, and outputs the decrypted data to an external device. The secure element stores the key information. The wireless power receiver, when the key information of the secure element is destroyed, receives wireless power from an external wireless device and provides the wireless power to the secure element.