This is Debian GNU/Linux's prepackaged version of Digest::SHA1 (renamed to be libdigest-sha1-perl). The Digest::SHA1 module allows you to use the NIST SHA-1 message digest algorithm from within Perl programs. The algorithm takes as input a message of arbitrary length and produces as output a 160-bit "fingerprint" or "message digest" of the input. SHA1 is described at This package was put together by Michael Alan Dorman . Matthias Urlichs took over maintenance upon the release of version 2.10-1 . However, due to his heavy workload, he opted to put this package up for adoption. Zak B. Elep now maintains this package. The original sources should always be available from the Comprehensive Perl Archive Network (CPAN). Visit to find a CPAN site near you. The only change for the Debian package was the addition of the debian/ files. The Digest::SHA1 copright is as follows: Copyright 1999-2001 Gisle Aas. Copyright 1997 Uwe Hollerbach. This library is free software; you can redistribute it and/or modify it under the same terms as Perl itself. Perl is distributed under your choice of the GNU General Public License or the Artistic License. On Debian GNU/Linux systems, the complete text of the GNU General Public License can be found in `/usr/share/common-licenses/GPL' and the Artistic Licence in `/usr/share/common-licenses/Artistic'.