IoT Datapoint Engine Access Control via Encryption

The patent introduces a datapoint engine as an intermediary component that sits between IoT devices and external requesters. This engine receives data from IoT devices, encrypts it using public keys from requesters, and manages key distribution. The intermediary enables data sharing while maintaining security by controlling which requesters receive encrypted data and managing the cryptographic key pairs, thus resolving the contradiction between accessibility and security.

The patent applies parameter changes by transforming data from an unencrypted state to an encrypted state using cryptographic algorithms. By changing the data's security parameter (encryption status) based on requester authorization, the system enables controlled accessibility. The data can be accessed by authorized parties while remaining protected from unauthorized access, resolving the contradiction between data utility and security.

The patent extracts the complex security management functionality from the IoT devices themselves and places it in a separate datapoint engine. The IoT devices simply generate data and cryptographic key pairs, while the datapoint engine handles encryption, key management, and access control decisions. This extraction reduces the complexity burden on individual devices while maintaining comprehensive security control across the system.

The datapoint engine serves multiple functions: it acts as a data collector from IoT devices, a cryptographic key manager, an encryption processor, and an access control gateway. By consolidating these diverse functions into a single multi-functional component, the system achieves robust security control without proportionally increasing overall system complexity, as the datapoint engine handles multiple security-related tasks efficiently.