Russ,

That is indeed an interesting use case.  Does this mean that you are really
more interested in using this as a content encryption algorithm rather than
a key encryption algorithm?  I have doubts for this use case that you are
looking to wrap key and are looking to wrap content.  This is different than
a use case where one wishes to use an HMAC algorithm with a key which is not
a multiple of 8 octets.

Jim


> -----Original Message-----
> From: Russ Housley <[email protected]>
> Sent: Tuesday, January 22, 2019 2:36 PM
> To: Jim Schaad <[email protected]>
> Cc: cose <[email protected]>
> Subject: Re: [COSE] Adding AES Key Wrap with Padding
> 
> Jim:
> 
> The use case is wrapping PKCS#8 objects, which are not necessarily a
multiple
> of 8 octets.
> 
> Russ
> 
> 
> > On Jan 22, 2019, at 5:09 PM, Jim Schaad <[email protected]> wrote:
> >
> > Russ,
> >
> > I will ask the same question that I asked the last time that somebody
> > requested that we support the AES Key Wrap with Padding Algorithm.
> > What is the use case that you have for this algorithm.  This makes a
> > difference in terms of how things are going to be used and what other
> > things might need to be specified for this.  I have to admit that I
> > would really prefer to get an AEAD version of this algorithm if we are
> > going to add something but that I probably not possible.
> >
> > Jim
> >
> >
> > _______________________________________________
> > COSE mailing list
> > [email protected]
> > https://www.ietf.org/mailman/listinfo/cose

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