[johnisgood]

Hey! I only found https://github.com/Componolit/libsparkcrypto/blob/0a3a3c5ed7.... I hope someone who is more acquainted will help us out.

In any case, you should read:

- https://www.auto.tuwien.ac.at/~blieb/AE2017/presentations/ae...

- https://www.auto.tuwien.ac.at/~blieb/AE2017/presentations/Ha...

- https://dwheeler.com/secure-programs/Secure-Programs-HOWTO/p...

- https://dwheeler.com/lovelace/s17s5.htm