crc32 - чем посчитать?

$ apt-cache show cksfv 
Package: cksfv
Priority: optional
Section: utils
Installed-Size: 80
Maintainer: Stefan Alfredsson <alfs@debian.org>
Architecture: i386
Version: 1.3-3
Depends: libc6 (>= 2.3.2.ds1-4)
Filename: pool/main/c/cksfv/cksfv_1.3-3_i386.deb
Size: 10766
MD5sum: 137b25577fd9bc1b938cfdb5e89fea42
Description: sfv checker and generator
 SFV, Simple File Verification, uses crc32 checksums to verify
 that files are intact. cksfv automates the task of generating
 and checking .sfv sheets.
 For integrity, md5 checksums are probably a better alternative,
 but sfv is a widely used method for verification on the
 USENET binary newsgroups and other places.