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RE: Need to C14N a reference before computing the digest ??

From: Dournaee, Blake <bdournaee@rsasecurity.com>
Date: Tue, 27 Aug 2002 17:09:59 -0700
Message-ID: <E7B6CB80230AD31185AD0008C7EBC4D2041D68FA@exrsa01.rsa.com>
To: "'Christian Geuer-Pollmann'" <geuer-pollmann@nue.et-inf.uni-siegen.de>, "???(Nathan Wu)" <nathan.wu@email.chinatrust.com.tw>, w3c-ietf-xmldsig@w3.org


In general, whether or not you apply canonicalization depends on the type of
URI and the transforms. Assuming no explicit transforms, if the URI="" or
URI="#foo" where foo is arbitrary, then you will use canonicalization to
create a canonical physical representation of the referenced resource. 

If the URI is NOT URI="" or URI="#foo", then no canonicalization occurs, the
resource is treated as octets. That is, unless there is an explicit
transform that requires the resource be interpreted as a node-set.


Blake Dournaee
Senior Systems Engineer
RSA Security, Inc.

"A mind all logic is like a knife all blade, it makes the hand bleed that
uses it."

-----Original Message-----
From: Christian Geuer-Pollmann
Sent: Friday, August 23, 2002 3:36 AM
To: ???(Nathan Wu); w3c-ietf-xmldsig@w3.org
Subject: Re: Need to C14N a reference before computing the digest ??

--On Freitag, 23. August 2002 18:02 +0800
<nathan.wu@email.chinatrust.com.tw> wrote:

> Do we need to C14N a reference before computing the digest ??

If you have a node set and you do not "manually" c14n by an explicit
transform, the default c14n is applied which is (inclusive) c14n omitting

Received on Tuesday, 27 August 2002 20:10:04 UTC

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