$cipher = Crypt::CBC->new( -key    => 'my secret key',
                             -cipher => 'Blowfish',
                             -salt   => 1
                           );

##</code><code>##

 -salt           Enables OpenSSL-compatibility. If equal to a value
                    of "1" then causes a random salt to be generated
                    and used to derive the encryption key and IV. Other
                    true values are taken to be the literal salt.

##</code><code>##

The -salt argument actives an OpenSSL-compatible method of generating the encryption/decryption key and IV. If salt has the value "1", then a random salt is computed (highly recommended). Any other non-false value will be interpreted as the bytes of the actual salt to use. If you provide the salt, it must be exactly 8 bytes in length. It is highly recommended that you use -salt=>1, as this may become the default in future versions of this module.