Re: How to hide a file ?

[H C <keydet89 () yahoo com>]

> An application that reads data from a file must also
>
> be able to act upon that data.  If the data includes
> encoding
> that can exploit a weakness, just "reading" data
> doesn't help.

I would agree, but to a degree...depending upon your
definition of 'is', of course.  ;-)

Seriously, what I mean is this...a graphics viewer
recognizes a particular format (or two, etc).  It
figures that for JPEGs, the file header is going to
look a certain way, and contain certain information,
such as graphic dimensions, etc.  Therefore, the
'acting upon the file' consists of grabbing blocks of
bytes and arraning them for presentation.  None of
this has anything to do with executing anything.  The
process is completely different.  For example, on
Win32, you have to call the CreateProcess() API in
order to execute a file, and that API takes certain
arguments.  Opening and reading a graphics file for
presentation doesn't require this.

Now, you may be able to do something in ASM, but
that's not my area...


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