System and method for pre-shared key (PSK) based document security

This invention describes a system for securing digital documents exchanged between applications on various devices, like those in a supply chain, without needing traditional security certificates. It works by generating, distributing, and managing secret digital keys (pre-shared keys or PSKs) that encrypt specific parts of documents. The method specifically details how devices authenticate using a key distribution service and exchange these keys over standard internet protocols like UDP or TCP, without relying on an additional secure transport layer.

Why it matters: The increasing scale of IoT deployments since 2023 has amplified the management burden of traditional certificates, making certificate-less approaches more appealing. However, the inherent challenge of securely implementing custom cryptographic protocols over raw UDP/TCP remains.

Status: Not in forceListed as no longer active. The specific reason is not in the record we hold.
How hard to build: SpecializedComplex software, cryptographic protocols, key management.

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