Stop that, it's very silly: http://news.swpat.org/2010/03/transcript-tridgell-patents/
I will be quite peeved if something I have been doing for years with combinations of tools like Dropbox and Truecrypt becomes more difficult or costly to me or my customers due to a patent like this one.
If your device/method doesn't exactly match the claim elements of the independent claim(s) in Apple's patent - even one little difference in implementation is enough - then your device/method is not infringing. Don't worry, be happy.