Reverse-engineering an encrypted IoT protocol

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## TL;DR I reverse-engineered the encrypted protocol GoodWe smart meters and solar inverters use to send metrics to the cloud. I used this research to build a prometheus exporter . ## The Sun: so hot right now I got a solar PV system installed in my house in mid 2023. I did the bare minimum of research beforehand - just talked to a couple of different installers about pricing, sizing and the…

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