Returns cookie data. If Base_Cookie::setCookieData() has been called before, you'll get the data created by the last Base_Cookie::setCookieData() call. To retrieve the original cookie data, use Base_Cookie::getInitialCookieData().
Reads data from cookie and stores retrived data to Base_Cookie::_data.
If the received cookie data is tainted, the method will either return boolean false or throw an exception -- behaviour depends on Base_Cookie:_taint_silent.
Writes data to cookie, or to be correct, to two cookies. One cookie will be filled with the serialized, encrypted data and the second one (name prefixed with "_fingerprint") will be filled with a fingerprint to verify the encrypted data. Returns bool.
