A research project at Lund University investigating IoT protocols and the energy cost of added security. The protocols analyzed are CoAP and MQTT with and without (D)TLS, using both PSK and PKI.
Applications for different tests are located in the src folder.
Follow the ESP32 "Get Started" guide and install IDF version 3.3.
Set the environment variable SQUIDWARD_PATH to point to the root folder of this repo.
To support DTLS in the stable branch, some files need to be patched, as described next.
In the $IDF_PATH/components/coap/libcoap folder, checkout a newer version of the library by running
git checkout 98954eb.
In the $IDF_PATH/components/coap/libcoap/ext/tinydtls folder run
git checkout 7f8c86e.
Copy patch/libcoap/coap_io.c and replace $IDF_PATH/components/coap/libcoap/src/coap_io.c.
Copy all files and folders in patch/coap and replace the files in $IDF_PATH/components/coap.
Copy patch/mbedtls/esp_timing.c to $IDF_PATH/components/mbedtls/port/.
Running make builds in the top folder will generate all configured binary files.
To generate binaries for a specific application, run make builds inside an application folder in src.