Jim:

PKCS#8 is a key that need to be wrapped.

I want to be able to use if for any keying material, including an HMAC key.

Russ


> On Jan 22, 2019, at 6:10 PM, Jim Schaad <[email protected]> wrote:
> 
> 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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