A simplified "API" tp "safely" hash and verify passwords in Perl

password.pl

################################################################################
# A simplified "API" to "safely" hash and verify passwords                     #
#                                                                              #
# Author: Günter Grodotzki <guenter@perlhipster.com>                           #
# License: http://www.gnu.org/licenses/gpl-2.0.txt                             #
# Version: 20140425                                                            #
################################################################################

use Authen::Passphrase::BlowfishCrypt;

sub password_hash {
	
    my ($password, $cost) = @_;

    if (!defined $cost || $cost =~ /\D/ || $cost < 4 || $cost > 31) {
        $cost = 14;
    }
	
    my $ppr = Authen::Passphrase::BlowfishCrypt->new(
        cost => $cost,
        salt_random => 1,
        passphrase => $password
    );

    return $ppr->as_rfc2307;
}

sub password_verify {
	
    my ($password, $hash) = @_;

    my $ppr = Authen::Passphrase::BlowfishCrypt->from_rfc2307($hash);

    return $ppr->match($password);
}

1;