Re: idea: MAC level compression & crypto

Ralf Baechle (ralf@uni-koblenz.de)
Mon, 30 Aug 1999 12:47:12 +0200


On Sun, Aug 29, 1999 at 12:44:14PM +0200, Rogier Wolff wrote:

> Elmer Joandi wrote:
> > for justification, there could be an reference rot13 transformation
> > module :)
> > or even more innocent - byteorder swaping transformation :)
> >
> > I feel I am been missing possibility for rot13 transformation of all IP
> > packets for longer.
>
> I really recommend NOT hinting at encryption by including a "rot13"
> example.
>
> As said before in this thread, HOOKS for encryption are munitions, and
> cannot be exported.
>
> A hook for rot13 is a hook for a (weak) encryption algorithm. That
> leaves no room to argue "But we didn't intend for it to get used for
> encryption. Just for an optional byte-swap".

Unlike for a hook for serious crypto a hook for ROT13 doesn't need to
handle keys ...

Ralf

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