Uncode demonstration

Here you will find the Perl program uncode.pl, intended to demonstrate how canonicalization of bodies by reversing all Content-Transfer-Encodings could lead to a more robust signature that would still work even if Content-Transfer-Encodings within a message were altered en route.

Also a tar file containing test data and a shell script to run it. These files were tarred together because they contain CRs in critical places and naked LFs in others, and I don't trust HTTP and non-Unix operating systems not to muck them up :-( .