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Re: Elliptic Curve issue status

From: Magnus Nyström <magnus@rsa.com>
Date: Thu, 23 Apr 2009 08:11:10 -0700 (Pacific Daylight Time)
To: Frederick Hirsch <Frederick.Hirsch@nokia.com>
cc: XMLSec WG Public List <public-xmlsec@w3.org>
Message-ID: <Pine.WNT.4.64.0904230804420.1716@W-JNISBETTEST-1.tablus.com>
For ISSUE-92: There wer no editorial action for "implicitCA" as we agreed 
not to include this option. As for the separate ECDomainParameter type, 
you may recall we discussed an alternate design but decided, for now, to 
keep with Kelvin's original design. There is a note in XMLDsig about this.

As for ISSUE-103, new text is in XMLEnc 5.5.4: "Compliant implementations 
are REQUIRED to support ECDH-ES key agreement using the P-256 prime curve 
specified in Section D.2.3 of FIPS 186-3 [FIPS186-3]. (This is the same 
curve that is REQUIRED in XMLDSIG 1.1 to be supported for the 
ECDSAwithSHA256 algorithm.) It is further RECOMMENDED that implementations 
also support the P-384 and P-521 prime curves for ECDH-ES; these curves 
are defined in Sections D.2.4 and D.2.5 of FIPS 186-3, respectively."

Similar text is also in Section 6.4.3 of XMLDsig 1.1. However, I wonder if 
the text in Section of XMLDsig ("Conformant applications MUST 
support the NamedCurve element and the 256-bit prime field curve as 
identified by the OID 1.2.840.10045.3.1.7.") should not be removed as the 
section where the MUSTs/SHOULDs on algorithms really is 6.4.3 , whereas is about describing ECC key valus.

-- Magnus

On Tue, 21 Apr 2009, Frederick Hirsch wrote:

> Magnus
> Are you able to confirm that the editorial actions for ISSUE-92 and ISSUE-103 
> are complete? Do you have pointers to where the draft has been updated?
> Thanks
> regards, Frederick
> Frederick Hirsch
> Nokia
> On Apr 21, 2009, at 9:32 AM, ext Magnus Nyström wrote:
>> Frederick,
>> #92 and #93 are done and can be closed.
>> We had agreement on #103 and AFAICT the text has been included now in
>> XMLEnc 1.1 so this one should also be possible to close.
>> -- Magnus
>> On Mon, 20 Apr 2009, Frederick Hirsch wrote:
>>> We have a few  open issues related to elliptic curve. Please review and
>>> indicate if any can be closed, or what actions might be needed to close 
>>> them.
>>> ISSUE-92
>>> Include the \"implicitCA\" option for ECKeyValueType and separate
>>> ECDomainParameterType type
>>> Action needed?, volunteer for action?
>>> ISSUE-93
>>> Missing a <Hash> element in the ds:ECParametersType type definition
>>> done with ECValidationDataType change. Propose to close.
>>> ISSUE-103
>>> Shouldn't there be a REQUIRED curve in XMLENC as well as there is one in
>>> Proposal needed? Volunteer for action?
>>> Thanks
>>> regards, Frederick
>>> Frederick Hirsch, Nokia
>>> Chair XML Security WG
Received on Thursday, 23 April 2009 15:15:42 UTC

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