http://www.opengroup.org/dce/info/draft-leach-uuids-guids-01.txt section 3.3 describes an algorithm for creating a name-based GUID. This is a snippet of code that implements that algorithm.

The GUID is returned in {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx} form.

use Digest::MD5 qw(md5_hex);

# Generate a GUID given a string
sub genGUID {
    my $seed = shift;
    my $md5 = uc md5_hex ($seed);
    my @octets = $md5 =~ /(.{2})/g;
    
    substr $octets[6], 0, 1, '4'; # GUID Version 4
    substr $octets[8], 0, 1, '8'; # draft-leach-uuids-guids-01.txt GUI
+D variant 
    my $GUID = "{@octets[0..3]-@octets[4..5]-@octets[6..7]-@octets[8..
+9]-@octets[10..15]}";
    
    $GUID =~ s/ //g;
    return $GUID;
}

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In reply to Generate GUID from a string by GrandFather

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