[PATCH v2 6/9] staging: ccree: add FIPS support
Stephan Müller
smueller at chronox.de
Mon Apr 24 06:21:46 UTC 2017
Am Montag, 24. April 2017, 08:16:50 CEST schrieb Stephan Müller:
Hi Gilad,
> >
> > int __des3_ede_setkey(u32 *expkey, u32 *flags, const u8 *key,
> >
> > unsigned int keylen)
> >
> > However, this does not check that k1 == k3. In this case DES3
> > becomes 2DES (2-keys TDEA), the use of which was dropped post 2015
> > by NIST Special Publication 800-131A*.
>
> It is correct that the RFC wants at least a 2key 3DES. And it is correct
> that SP800-131A mandates 3key 3DES post 2015. All I am saying is that FIPS
> 140-2 does *not* require a technical verification of the 3 keys being not
> identical.
One side note: we had discussed a patch to this function in the past, see [1].
[1] https://patchwork.kernel.org/patch/8293441/
Ciao
Stephan
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