Thank you very much for your great answers. So I could learn a lot.

Here the final solution: 

#!/usr/bin/perl

use strict;
use warnings;

my $str = "/etc/test2.sh"; # checksum32: 990644297
my $checksum32 = &calcChecksum32($str);

print $checksum32 . "\n";

sub calcChecksum32()
{
    my $str = $_[0];
    my $nb_pad_bytes = 4 - (length($str) % 4);

    $str .= "\0" x $nb_pad_bytes;
    unpack('%32N*', $str);
}

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In reply to Re^4: CRC of a string by Dirk80
in thread CRC of a string by Dirk80

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