Whichever your favorite language is, try researching its dependencies used in the cryptographic primitives, especially in the use cases where performance matter

Whichever your favorite language is, try researching its dependencies used in the cryptographic primitives, especially in the use cases where performance matters. More often than not, what at the end “does the job” is some library written in C (even with the asm parts) or marked with “unsafe” tags. The practice is still different to what the idealists believe.