[adastra22]

Non-cryptographers should not be implementing NIST standards. You should be using higher level APIs written by cryptographers which do employ NIST standards in the details.

[astrange]

Implementing them for fun might turn you into a cryptographer, though, especially (or only?) if you manage to find everything you get wrong.

[oconnore]

If you're including cryptography in a system design, you are almost certainly relying on NIST standards to select algorithms.