Industrial Wireless OTP Key Storage for Secure Data Transmission
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Solution Overview
Problem
Industrial wireless instruments face security challenges due to the susceptibility of wireless data to interception and unauthorized use, as existing encryption methods are threatened by advancements in computing technology, and implementing one-time pad (OTP) encryption is impractical due to the large storage requirements for secure key management.
Innovation Solution
The use of solid-state memory devices within industrial wireless instruments to store a sufficient number of one-time pads, ensuring physical security and secure key management through tamper-resistant manufacturing and replacement only at authorized manufacturers, with the pads being used once for encryption and never reused, and synchronized across connected devices for secure data transmission and decryption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If one-time pad encryption is implemented in industrial wireless instruments, then data security is improved, but storage space requirements increase
Solution Approach 1:
The patent divides the one-time pad storage into multiple separate memory devices, each storing a portion of the encryption pads. This segmentation allows the system to achieve high security through OTP encryption while distributing the storage burden across multiple components, making the large storage requirement more manageable and practical for industrial wireless instruments.
2Device complexity
If traditional encryption methods are used, then implementation simplicity is maintained, but security reliability deteriorates due to computing technology advancements
Solution Approach 1:
The patent pre-generates and stores multiple one-time pads in memory devices before the wireless instrument is deployed. This preliminary action ensures that when encryption is needed, the system can immediately use pre-prepared secure keys without requiring complex real-time key generation, thus maintaining implementation simplicity while achieving superior security reliability compared to traditional methods.
Data Source
AI summary
Methods and systems for implementing one-time pad (OTP) encryption in industrial wireless instruments advantageously make use of data storage devices now available that can store a large number of encryption keys or pads in a small enough package to fit within an industrial wireless instrument. In some embodiments, the wireless instruments use solid-state memory devices that can easily hold a sufficient number of pads to last the expected lifetime of the wireless instruments. The solid-state memory devices are installed only during manufacturing of the wireless instruments where tamper-resistant manufacturing and assembly techniques may be used to ensure security for the pads. Likewise, the solid-state memory devices of the wireless instruments are also replaced or replenished only at an authorized manufacturer should additional pads be needed.