33. The method of claim 32 , wherein modifying the selected substring of the sensitive string of characters comprises modifying the selected substring at least in part based on an initialization vector.
33. The method of claim 32 , wherein modifying the selected substring of the sensitive string of characters comprises modifying the selected substring at least in part based on an initialization vector. 34. The method of claim 33 , wherein the initialization vector comprises characters from the sensitive string of characters.