Note: NEW dependency on python-ctype
--- cfv.py	2007-02-02 22:25:48.000000000 +0100
+++ cfv.py	2008-04-21 16:15:23.000000000 +0200
@@ -17,7 +17,7 @@
 #    along with this program; if not, write to the Free Software
 #    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 
-import getopt, re, os, sys, errno, time, copy, struct, codecs
+import getopt, re, os, sys, errno, time, copy, struct, codecs, ctypes
 from stat import *
 
 cftypes={}
@@ -698,11 +698,12 @@
 	class CRC32:
 		digest_size = 4
 		def __init__(self, s=''):
-			self.value = _crc32(s)
+			self.value = ctypes.c_uint32(0);
+			self.value.value = _crc32(s)
 		def update(self, s):
-			self.value = _crc32(s, self.value)
+			self.value.value = _crc32(s, self.value.value)
 		def digest(self):
-			return struct.pack('>I',self.value)
+			return struct.pack('>I',self.value.value)
 
 	def _getfilemd5(file):
 		return _getfilechecksum(file, md5.new)