/// <summary>
/// Generates a new keypair.
/// </summary>
/// <returns>The keypair.</returns>
public static KeyPair NewKeypair()
{
byte[] publicKey = new byte[CRYPTO_KX_KEYBYTES];
byte[] secretKey = new byte[CRYPTO_KX_KEYBYTES];
NativeLibsodium.crypto_kx_keypair(publicKey, secretKey);
KeyPair pair = new KeyPair();
pair.publicKey = publicKey;
pair.secretKey = secretKey;
return(pair);
}