docs: public static KeySpec newPBEKeySpec(final String privateKey, final byte[] salt,
  		final int iterationCount)
  	{
  		if (privateKey == null)
  		{
  			return new PBEKeySpec(CompoundAlgorithm.PRIVATE_KEY.toCharArray(), salt,
  				iterationCount);
  		}
  		return new PBEKeySpec(privateKey.toCharArray(), salt, iterationCount);
  	}