Alessandro Vesely wrote:
> 
> Ok, done.  Will you then say what you think about it?
> 
> Filename:      draft-vesely-dkim-joint-sigs
> Revision:      00
> Title:                 DKIM Joint Signatures
> Creation_date:         2010-09-15
> WG ID:                 Independent Submission
> Number_of_pages: 5
> 
> Abstract:
> DKIM Joint Signatures provides a means to limit the responsibility of
> a message that implied by signing it, and possibly transfer the
> responsibility to a third party.
> 
> http://www.ietf.org/id/draft-vesely-dkim-joint-sigs-00.txt

The I-D lacks examples to better understand this proposal.

I see these generic possibilities:

First party Example:

    From: [email protected]
    DKIM-Required: example.com
    DKIM-Signature:  d=example.com h="From:DKIM-Required"

Third party Example:

    From: [email protected]
    DKIM-Required: thirdparty.com
    DKIM-Signature: d=thirdparty.com h="From:DKIM-Required"

Is this proposal a method to expose the thirdparty.com as an 
"authorized" signer?

I am not clear with the rational in the verifier procedure itemized in 
section 3 "The DKIM-Required Field."


-- 
Hector Santos, CTO
http://www.santronics.com
http://santronics.blogspot.com


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