encryption bloats file

[Scott Lambdin]

Thanks for the offer but I would be put in Guantanamo bay if I did that.
^_^

On Fri, Jan 9, 2009 at 5:45 PM, David Shaw <dshaw at jabberwocky.com> wrote:

>  On Fri, Jan 09, 2009 at 03:33:05PM -0500, Scott Lambdin wrote:
> > Hello -
> >
> > Someone sends us a big ~700MB pgp encrypted file and when we decrypt it
> the
> > resulting file is about half that size.  Anyone have an idea what they
> might
> > be doing to swell it up like that?
>
> Most OpenPGP programs compress files before they are encrypted.  Some
> files (for example, already compressed files) are poison to
> compression and actually get bigger.  Doubling in size, however, is
> not likely.  In any event, you don't say that program generated this
> file, but at least GPG detects common forms of already-compressed data
> and will not attempt to compress it further.
>
> If you can send me such an encrypted file (my key is 99242560) I will
> look at it and see what is going on.
>
> David
>
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