Comment 3 for bug 915618

here is the final (it took ~2 years to craft an acceptable patch) Tresys
patch that Tizen (and Selinux) are attempting to extend RPM's state
machine through modular hooking:
    http://lists.rpm.org/pipermail/rpm-maint/2010-June/002762.html

Note that -- IF THIS PATCH IS USED -- the blob's will increase the
size of /var/lib/rpm/Packages significantly: the uncompressed
size of the blobs was estimated at ~40Mb.

The bzip2 compression makes the information opaque to rpm queries,
and also adds additional performance overhead to remove the chosen
bzip2 compression in order to access the STILL OPAQUE gunk inside.