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 <>

You will need Perl version 5.004 or better to install this module.

Copyright 1999-2003 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.