Methods and apparatus to broadcast data packets in a process control environment

This invention describes a way for a computer to securely receive information from a sensor or other device in a factory or plant. It works by identifying a source indicator and the main data in a received packet, then using this indicator along with special codes from a previous message to create a unique key that unlocks the encrypted main data. The specific version described also includes a way to verify the data's integrity, ensuring it hasn't been altered during transmission.

Why it matters: Filed before the widespread push for zero-trust architectures in industrial control systems. The emphasis on verifiable data integrity and dynamic key management now aligns with evolving OT security standards.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedSoftware logic, cryptographic algorithms, network protocols

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