Hello, I'm trying to encrypt a string then base64 encode it so its safe for use in a url.

Is there anyway to encrypt a string using Crypt::CBC so that each run would produce a completely different output? I get close with the following but the first 11 chars (im guessing its the random header) are always the same in my output, even though the rest of the encytped string changes.

my $key = 'somerandomkey';

my $cipher = Crypt::CBC->new( -key => $key,
                              -header => 'randomiv',
                              -cypher => 'Blowfish',
                           );


my $ciphertext = $cipher->encrypt($string);
my $safe_data = urlsafe_b64encode($ciphertext);
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I'v also tried -header=> none with an iv and that produces the exact same result for each run.