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Subject: Re: comments on cppml,v0.1.dtd

One thing to consider is that if we continue to "just point to a URL" for
the cert
that puts the onus on all of the URL owners to provide the structure when
obtaining it,
and authorization mechanisms with error messages etc. Yes it can all be
there at a URL,
but I think it is beneficial to think to accommodate a common structure for

"KeyInfo may contain keys, names, certificates and other public key
management information, such as in-band
key distribution or key agreement data."

Seems the CPP would be a good place to advertise a public key data, and
beyond that
it seems the issue is mostly on process as to what should appear where
when; Something
important but secondary to having a consistent structure. The structure
does seem flexible
enough to use in CPP and CPA. regardless of what appears when.

Scott Hinkelman, Senior Software Engineer
XML Industry Enablement
IBM e-business Standards Strategy
512-823-8097 (TL 793-8097) (Cell: 512-940-0519)
srh@us.ibm.com, Fax: 512-838-1074

Martin W Sachs/Watson/IBM@IBMUS on 12/12/2000 02:00:32 PM

To:   Christopher Ferris <chris.ferris@east.sun.com>
cc:   "ebxml-tp@lists.ebxml.org" <ebxml-tp@lists.ebxml.org>,
Subject:  Re: comments on cppml,v0.1.dtd

Is the amount of detail in the certificate proposal below actually needed
in the CPA or CPP?  The 0.0 draft merely contains the URL of the
certificate.  Could the information shown below be obtained by actually
going to the certificate via the URL?  Is the intent that the actual
certificate not be seen by another party before there is an agreement or
note be seen at all?



Martin W. Sachs
IBM T. J. Watson Research Center
P. O. B. 704
Yorktown Hts, NY 10598
914-784-7287;  IBM tie line 863-7287
Notes address:  Martin W Sachs/Watson/IBM
Internet address:  mwsachs @ us.ibm.com

Christopher Ferris <chris.ferris@east.sun.com>@east.sun.com on 12/12/2000
12:53:19 PM

Sent by:  Chris.Ferris@east.sun.com

To:   "ebxml-tp@lists.ebxml.org" <ebxml-tp@lists.ebxml.org>,
Subject:  comments on cppml,v0.1.dtd


I would like to hear some opinions on the following comment
I have regarding the initial draft DTD for our CPP/CPA.

The original tpaML,v1.0.6 offered a Certificate
element which was composed of (basically) the same
elements as have been defined thus far for our CPP.
I only reorganized things such that a set of Certificates
could be organized/collected within a Party element (formerly

The issue/comment that I have is that the certificate
contains no means which I can determine to actually
identify the certificate itself. Would we be better
served to leverage the work of the (now CR) XMLDSig WG
and use the KeyInfo element they have defined?


  <X509Data> <!-- two pointers to certificate-A -->
      <X509IssuerName>CN=TAMURA Kent, OU=TRL, O=IBM,
                  L=Yamato-shi, ST=Kanagawa, C=JP</X509IssuerName>
  <X509Data> <!-- single pointer to certificate-B -->
      <X509SubjectName>Subject of Certificate B</X509SubjectName>
  <X509Data><!-- certificate chain -->
              <!--Signer cert, issuer CN=arbolCA,OU=FVT,O=IBM,C=US, serial
    <!-- Intermediate cert subject CN=arbolCA,OU=FVTO=IBM,C=US
                   issuer,CN=tootiseCA,OU=FVT,O=Bridgepoint,C=US -->
    <!-- Root cert subject CN=tootiseCA,OU=FVT,O=Bridgepoint,C=US -->

It would seem to me that this would be a logical choice
for us as it would (potentially) ease implementation
use of this particular feature, especially once XMLDSig becomes
more commonly used.

I see no real benefit at this stage for ebXML to define
its own XML vocabulary for describing a certificate.




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