I highly recommend pairing an esp8266 with a ATECC508A crypto chip for serious tls stuff. It all works nicely with MongooseOS. Edit: Looks like the MongooseOS

I highly recommend pairing an esp8266 with a ATECC508A crypto chip for serious tls stuff. It all works nicely with MongooseOS. Edit: Looks like the MongooseOS team has even blogged about it (a few different times). Here is an example: https://mongoose-os.com/blog/mongoose-esp8266-atecc508-aws/ https://mongoose-os.com/blog/mongoose-esp8266-atecc508-aws/