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mruettgers / SMLReader

ESP8266 based smart meter (SML) to MQTT gateway
GNU General Public License v3.0
289 stars 67 forks source link

SSL/TLS support #60

Open sec-hack-research opened 1 year ago

sec-hack-research commented 1 year ago

Hi,

Thank you for your project, I've already successfully managed to transfer powermeter data to my MQTT server. For me the next step would be to enable some more security, and thus I am evaluating the possibilities of SMLReader with TLS.

I've tried to find a way to activate TLS with SMLReader on my own. Would it be possible someone update the README on this topic with a small HowTo (ideally including a fingerprint verification), since I am still quite a beginner with the ESP8266? Also, I am seeing people, claiming that the ESPAsyncTCP has some bugs regarding SSL. Can someone verify this - and if so, adapt the SMLReader release to use an updated version of the lib?

Thank you very much in advance! Great project you've provided here. Thank you!

emmrichd commented 1 year ago

I strongly doubt, that an esp8266 has the necessary cpu performance to do this.

sec-hack-research commented 1 year ago

I strongly doubt, that an esp8266 has the necessary cpu performance to do this.

Both is clearly possible. Have a "service-application" on the ESP8266 that allows incoming TLS connections, and also it is possible to use the ESP8266 with outgoing requests to any server that supports TLS.