Fucking pimatic.... I'm not fucking able to send just raw 433MHz signals like in pilight. Now I have to use the fucking shell-execute plugin to communicate with pilight to send the correct codes to my RF Sockets.
(Btw the pimatic-pilight plugin is deprecated so I'm not able to use it)

Fuck. But. Hey. It. Works.

Avoided IoT(IoS - InternetOfShit) for a long time now, due to the security concerns with retail products.
Now I looked into 433 Transceiver + Arduino solutions.. to build something myself, just for the lolz.

Theory:
Smallest Arduino I found has 32 KByte of programmable memory, a tiny tiny crypto library could take around 4 KBytes...

Set a symetric crypto key for each homebrewn device / sensor / etc, send the info and commands (with time of day as salt for example) encrypted between Server <-> IoT gadget, ciphertext would have checksum appended, magic and ciphertext length prepended.

Result:
Be safe from possible drive-by attacks, still have a somewhat reliable communication?!
Ofc passionate hackers would be still able to crack it, no doubt.

Question: Am I thinking too simple? Am I describing just the standard here?