Cryptography for reading data

["Arthur Maciel" <arthurmaciel gmail com>]

Hi there.

Really don´t know if it is off-topic, but I would like to know if
Glibmm provides any tool to cryptograph a file and to decryptograph
it.

I´m reading XML files with libxml++ and would like to give only to my
program the ability to understand the XML file (and of course to the
program that generates it), so the data, if intercepted, cannot be
understood.

Thanks in advance.
Arthur Maciel