pub fn create_proof_of_knowledge(
  secret_key: SecretKey,
  public_key: PublicKey,
) -> Signature

pub fn derive_public_key(secret_key: SecretKey) -> PublicKey

pub fn generate_secret_key() -> SecretKey

pub fn public_key_from_bytes(
  bytes: BitArray,
) -> Result(PublicKey, String)

pub fn public_key_to_bytes(public_key: PublicKey) -> BitArray

pub fn secret_key_from_bytes(
  bytes: BitArray,
) -> Result(SecretKey, String)

pub fn secret_key_to_bytes(secret_key: SecretKey) -> BitArray

pub fn signature_to_bytes(signature: Signature) -> BitArray