Re: [PATCH] crypto: add key wrapping block chaining mode

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On Wed, Apr 22, 2015 at 01:53:24PM +0800, Herbert Xu wrote:
> On Wed, Apr 22, 2015 at 06:36:59AM +0200, Stephan Mueller wrote:
> > 
> > The key wrapping is an authenticated encryption operation without
> > associated data. Therefore, setting of AAD is permissible, but that data
> > is not used by the cipher implementation.
> 
> In that case you should return an error if AAD is provided rather
> than silently discarding them since by definition AEAD must include
> the AAD in the integrity value.

In fact drop the AEAD altogether and just use ablkcipher.  The
integrity value is then simply the output IV.

Cheers,
-- 
Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx>
Home Page: http://gondor.apana.org.au/~herbert/
PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt
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