how to Protect data

[Girish Pandit]

Hi,

I was being ask about protecting data, means that the search index data 
is stored in the some indexed files and when you open those indexed 
files, I can clearly see the data, means some texts, e.g. name, address, 
postal code etc.

is there anyway I can hide the data? means some kind of data encoding to 
not even see any text raw data.

-Girish