If Bruce Schneier thinks that strong symmetric crypto works (the math behind it is sound) I think I will also trust it. The attacks are usually on the implemen

If Bruce Schneier thinks that strong symmetric crypto works (the math behind it is sound) I think I will also trust it. The attacks are usually on the implementations or subverting the rng. Or plain old thermorectal cryptoanalysis - it obtains both symmetrical and asymmetrical keys in fixed time.