code: func NewSigningSecretKey(pub *[ed25519.PublicKeySize]byte, sec *[ed25519.PrivateKeySize]byte) SigningSecretKey {
  	return SigningSecretKey{
  		sec: rawSigningSecretKey(*sec),
  		pub: SigningPublicKey(*pub),
  	}
  }
docs: // NewSigningSecretKey creates a new basic signing key from byte arrays.