Cryptographic Key Destruction via Binding Key Erasure
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Solution Overview
Problem
Existing technologies fail to provide reliable on-demand destruction of globally distributed cryptographic keys and associated data, limiting the ability to free up memory resources before set expiration times and lacking precise timing control for data deletion.
Innovation Solution
A method and system for on-demand destruction of cryptographic keys, utilizing a logical treadmill of unique encryption keys with associated deletion timestamps, where binding keys are encrypted and deleted in response to user-defined erasure scope parameters and shred-now requests, allowing for secure and timely deletion of data across distributed systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If cryptographic keys are retained until set expiration times, then data security is maintained, but memory resources cannot be freed up earlier
Solution Approach 1:
The system performs preliminary destruction of cryptographic keys at user-defined expiration times before the data is actually deleted. By destroying the encryption keys in advance, the system enables secure data erasure while allowing memory resources to be freed up earlier than traditional methods permit, resolving the contradiction between resource utilization and data security
Solution Approach 2:
The invention extracts the cryptographic key destruction function from the data deletion process itself. By separately destroying the encryption keys independently of the data, the system enables memory resource recovery while maintaining data security through key destruction, allowing resources to be freed without compromising security
2Productivity
If cryptographic keys are destroyed on-demand, then memory resources are freed up, but precise timing control for data deletion is lost
Solution Approach 1:
The system implements feedback mechanisms where the key destruction process is monitored and controlled based on user-defined parameters and system state. This feedback loop ensures that keys are destroyed at precise times while maintaining the ability to free memory resources on-demand, resolving the contradiction between productivity and timing precision
Solution Approach 2:
The system dynamically adjusts the key destruction timing based on user-defined expiration times and system conditions. This dynamic approach allows the system to provide both on-demand resource freeing and precise timing control, adapting to different operational requirements without sacrificing either productivity or measurement precision
3Ease of operation
If cryptographic keys are globally distributed, then data accessibility is improved, but reliable destruction of all key copies becomes difficult
Solution Approach 1:
The system performs preliminary destruction of the master cryptographic key before data is distributed or accessed. By destroying the master key in advance, all derived key copies become automatically unusable, ensuring reliable destruction across all distributed locations while maintaining data accessibility during the operational period
Solution Approach 2:
The invention extracts the master key destruction operation from the distributed key management system. By centrally destroying the master key independent of distributed copies, the system ensures reliable destruction of all key instances globally while maintaining ease of data accessibility during normal operation, resolving the contradiction between accessibility and destruction reliability
Data Source
AI summary
Example embodiments of the present disclosure provide for an example method including obtaining data include an erasure scope parameters. The erasure scope parameters include a binding key and a scope timer. The example method includes obtaining resource data. The example method includes encrypting the resource data using the binding key. The example method includes obtaining a shred-now request. The example method includes in response to obtaining the shred-now request, deleting the binding key and rendering the encrypted data unrecoverable.