[Haskell-cafe] How to use an crypto with hackage cereal?

Hi, I am trying to work with some binary data that encrypted by field instead of the result of serialization. I'd like to use Data.Serialize to wrap the data structure. But I could not figure out how to apply an runtime specified cipher method to the bytestring. Any idea? Or I should use totally other solution? Thanks. -- 竹密岂妨流水过 山高哪阻野云飞 And for G+, please use magiclouds#gmail.com.