docs: public static KeyPair newKeyPair(final File publicKeyDerFile, final File privateKeyDerFile)
  		throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException,
  		IOException
  	{
  		final PublicKey publicKey = PublicKeyReader.readPublicKey(publicKeyDerFile);
  		final PrivateKey privateKey = PrivateKeyReader.readPrivateKey(privateKeyDerFile);
  		return newKeyPair(publicKey, privateKey);
  	}