Not sure, I'm not a crypto wizard. My guess would be that "it depends". What you describe was more-or-less the basis for 3DES IIRC, but (knowing crypto) you cou

Not sure, I'm not a crypto wizard. My guess would be that "it depends". What you describe was more-or-less the basis for 3DES IIRC, but (knowing crypto) you could probably just as easily accidentally break the cryptosystem to the effectiveness of just the best scheme.