Question

What is the answer of y²=x³+ax+b

Answer 1

Answer:

Given y, is it possible to solve for x in the elliptic curve equation y2=x3+ax+b over a finite field?

Or is it known to be as difficult as say, something like the discrete logarithm problem via a reduction argument?

Specifically I would like to know this for the secp256k1 curve over field = Zp, with:

modulus p=2256−232−977; a=0; b=7;

order of base point = 2256−432420386565659656852420866394968145599.

(The curve equation is simply y2=x3+7.)

Answer 2

${\huge{\green{Explain :)}}}$