Storage Device Security Control Unit Using Resistive Memory Switches
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Solution Overview
Problem
Existing storage devices face challenges with complex configurations and performance degradation due to the use of expensive security programs, which hinder effective data protection.
Innovation Solution
A storage device with a security control unit that uses programmable switching devices, including resistive memory or flash memory, to control connections between internal and external wires based on an encryption key, ensuring secure data transmission and storage without the need for additional encryption programs.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional security programs are used to protect data in storage devices, then data security is improved, but device complexity and cost increase
Solution Approach 1:
The patent replaces conventional software-based security programs with a hardware-level security mechanism using resistive memory devices as switching elements. These memory devices physically control wire connections based on resistance states determined by encryption keys, substituting software complexity with hardware-based cryptographic control at the circuit level.
Solution Approach 2:
The resistive memory devices serve multiple functions: they act as both storage elements and switching devices that control wire connections. This multi-functionality eliminates the need for separate security software and hardware switching components, reducing overall system complexity while maintaining security.
2Reliability
If conventional security programs are used to protect data in storage devices, then data security is improved, but device performance degrades
Solution Approach 1:
The encryption key is used to pre-program the resistive memory devices during manufacturing or initialization. This preliminary configuration establishes the security routing paths before data operations begin, eliminating the need for real-time cryptographic processing during data storage and retrieval, thus maintaining high performance.
3Extent of automation
If programmable switching devices are used to control wire connections based on encryption keys, then real-time encryption capability is achieved, but manufacturing complexity increases
Solution Approach 1:
The patent utilizes the resistance parameter of resistive memory devices to encode cryptographic information. By programming these devices to specific resistance states (high or low) based on encryption key bits, the system achieves automated cryptographic control through physical parameter changes rather than complex manufacturing processes.
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 real-time encryption and decryption capabilities, enhancing data security by controlling wire connections according to encryption keys, thereby preventing unauthorized access and maintaining device performance.
Implementation Method 1
the plurality of switching devices includes resistive memory devices, and a difference between a resistance of each of the resistive memory devices when programmed to a first logic state and a resistance of each of the resistive memory devices when programmed to a second logic state is greater than a desired resistance
Data Source
AI summary
A storage device may include a storage unit that stores data transmitted via a plurality of first wires; and a security control unit that controls connection between each of a plurality of second wires connected to an external device and each of the plurality of first wires by programming a plurality of switching devices according to an encryption key.