fe.settings:getUserBoardSettings - non array given[os] - Endchan Magrathea
Unrelated to the previous discussion

Crypto for 8-bit
https://cryptolux.org/index.php/Links_to_Embedded_Crypto_Implementations
https://crypto.stackexchange.com/questions/55885/lightweight-cipher-using-only-8-bit-operations
https://crypto.stackexchange.com/questions/570/types-of-cryptography-for-a-4-8-bit-microcontroller
https://cockrum.net/Implementation_of_ECC_on_an_8-bit_microcontroller.pdf-

https://www.embedded.com/design/prototyping-and-development/4006433/Implementing-SSL-on-8-bit-micros
https://cockrum.net/Implementation_of_ECC_on_an_8-bit_microcontroller.pdf