Libcrypt examples?

Johan Wevers johanw at
Sat Oct 18 16:09:54 CEST 2014

On 17-10-2014 22:12, Robert J. Hansen wrote:

> It's pretty easy to show, for instance, that breaking a 256-bit cipher
> with a Zarbnulaxian quantum computer would release so much heat the
> earth would be uninhabitable.

Assuming they have no better way than brute-forcing it. If their
knowledge of mathematics is much larger than ours (the NSA knew about
some attacks before the civil crypto community as proved by their
optimization of DES against differential cryptanalysis) that might be a
questionable assumption.

Otherwise there is still rubber-hose cryptography (torture) and the
aliens might be telepaths or have advanced brain scanners (side channel

ir. J.C.A. Wevers
PGP/GPG public keys at

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