Fix: How to get X and Y coordiantes with GMP library on secp256k1 curve?
To get X and Y coordinates on the secp256k1 elliptic curve using the GMP (GNU Multiple Precision) library, you'll typically work with Big Integers to perform the necessary calculations. Here's an example of how to compute the X and Y coordinates for a point on the secp256k1 curve in C/C++ using the GMP library: ```c #include <stdio.h> #include <gmp.h> #include <secp256k1.h> int main() { // Initialize GMP variables for the coordinates mpz_t x, y; mpz_inits(x, y, NULL); // Initialize secp256k1 context secp256k1_context_t* ctx = secp256k1_context_create(SECP256K1_CONTEXT_SIGN); // Example private key (you'd typically generate a random one) const char* private_key_hex = "0123456789abcdef0123456789abcdef0123456789abcdef0123456789abcdef"; // Convert the private key to a GMP integer mpz_set_str(x, private_key_hex, 16); // Compute the corresponding public key secp256k1_pubkey pubkey; if (secp256k1_ec_pubke