Created a data store in a single encrypted file

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The article presents a custom encrypted data storage system built into a single file. It uses AES-256-CTR, SHA-256 token-based authentication, and an append-only record format to store and retrieve encrypted payloads. The implementation exposes gRPC methods for writing data and includes an example that captures webcam frames and uploads them as JPEG snapshots. The piece focuses on the design, file structure, and runtime behavior of the software rather than on company news.

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