//Generate 256 bit entropy.
data_chunk myEntropy(ec_secret_size); //256bits
pseudo_random_fill(myEntropy);
//Construct private key with Entropy
ec_secret mySecret; //256bit byte_array
mySecret = to_array<ec_secret_size>(myEntropy);
//Not all possible 256bits are member of Fp
std::cout << verify(mySecret);