docs: public static PrivateKey readPrivateKey(final byte[] privateKeyBytes, final String algorithm)
  		throws NoSuchAlgorithmException, InvalidKeySpecException, NoSuchProviderException
  	{
  		final PKCS8EncodedKeySpec keySpec = new PKCS8EncodedKeySpec(privateKeyBytes);
  		final KeyFactory keyFactory = KeyFactory.getInstance(algorithm);
  		final PrivateKey privateKey = keyFactory.generatePrivate(keySpec);
  		return privateKey;
  	}