Here's one generic class I wrote while working on dpkg-source v2. I have more forthcoming.
It would be great if this could be included in dpkg-dev/scripts.
#!/usr/bin/python # -*- coding: utf-8 -*- # SignedFile offers a subset of file object operations, and is # designed to transparently handle files with PGP signatures. # Copyright � 2002 Colin Walters <[EMAIL PROTECTED]> # # This file is free software; you can redistribute it and/or modify it # under the terms of the GNU General Public License as published by # the Free Software Foundation; either version 2 of the License, or # (at your option) any later version. # # This program is distributed in the hope that it will be useful, but # WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU # General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA

