decoding an X509 Certificate with Convert:ASN1 ?

Hello,

i try to decode X509 Certificates (as stored in
userCertificate;binary) using this test-script:

use Convert::ASN1; 
use Data::Dump qw(dump);
my $cert;

{       open( FILE, $ARGV[0] ) or die "cannot open $ARGV[0]:$!\n";
        local $/; 
        binmode(FILE);
        $cert=<FILE>;
}

$asn = Convert::ASN1->new;
$out = $asn->decode($cert);
print dump($out);

Unfourtunately, the only printout I get is "undef" using the attached
file. I checked for the UTF8-problem, but the certificate-file is just
the same when I export the public key directly from Inetnetexplorer in
DER-format.

I'm using perl 5.8.6, Convert::ASN1 1.20.

Please point me to my error.

Thanks in advance,

Alexander Jung

g023314.der.cer
Description: application/x509-ca-cert