Cryptography in web development?

Question

Cryptography

I study in the specialty "cybersecurity", we study all sorts of subjects, including the specialty where we studied number theory, now we have reached elliptic curves. We teach C/C++ programming. Although I myself study PHP / JS, layout and in general I try to study the web, I want to develop in this direction, I am making my own website. The question is: does a web developer need knowledge of cryptography, all sorts of Schnorr algorithms, etc. ?

Answer 1

For "regular" sites, this is not necessary. Mostly what is in browsers is used.
In unusual ones, it is sometimes used - the same miners on js, or strong encryption on the client in some instant messengers or file hosting services like mega.
But such tasks are very rare.

Answer 2

No.
Only basic principles: what is a public key, what is a private key, etc.