You also could have a look at Data::Serializer, it provides a unified interface to the various serializing modules currently available. Adds the functionality of both compression and encryption.
example from cpan:

use Data::Serializer;
  
  $obj = Data::Serializer->new();

  $obj = Data::Serializer->new(
                          serializer => 'Storable',
                          digester   => 'MD5',
                          cipher     => 'DES',
                          secret     => 'my secret',
                          compress   => 1,
                        );

  $serialized = $obj->serialize({a => [1,2,3],b => 5});
  $deserialized = $obj->deserialize($serialized);
  print "$deserialized->{b}\n";
[download]

Drawback may be 'spaces' to store sometimes go wrong. This can be solved by putting them in an array first, and store the array using Data::Serializer.

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