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Re: SOAP Message Canonicalization

From: <noah_mendelsohn@us.ibm.com>
Date: Wed, 15 Jan 2003 18:19:17 -0500
To: Joseph Reagle <reagle@w3.org>
Cc: dee3@torque.pothole.com, marc.hadley@sun.com, mgudgin@microsoft.com, w3c-ietf-xmldsig@w3.org, w3c-xml-protocol-wg@w3.org
Message-ID: <OF2DE26ABC.486C4847-ON85256CAF.008007A9@lotus.com>

Joseph Reagle wrote:

>> But, if I understand correctly, you don't want 
>> to require schema validation? 

Correct.  SOAP does not ever depend on schema validation, though 
applications of SOAP may choose to validate.  SOAP does in certain places 
describe the semantics of a message without attribute "A" as being the 
same as a similar message with some particular explicit value for 
attribute A.  This equivalence is NOT normatively explained as resulting 
from defaulting by a schema.

>> (Otherwise, SchemaCentic c14n might be worth 
>> consideration?
>>   http://www.uddi.org/pubs/SchemaCentricCanonicalization-20020710.htm
>> )

I think not, for the reason stated above.  The equivalence classes for 
SOAP messages are not in general defined by schema.

Noah Mendelsohn                              Voice: 1-617-693-4036
IBM Corporation                                Fax: 1-617-693-8676
One Rogers Street
Cambridge, MA 02142
Received on Wednesday, 15 January 2003 18:20:44 UTC

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