Encryption, Post Quantum Cryptography, Elliptic Curve, Digital Signatures, Kyber.
G But the x coordinate of P must match R and R is the x coordinate of k * G, which means that : k*G = S^-1 (z + a * R) *G we can simplify by removing G which gives us : k = S^-1(z + a * R) by inverting k and S, we get : S = k^-1 (z + a *R) and that is the equation used to generate the signature..