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RE: XHASH / DOMHASH

From: Richard D. Brown <rdbrown@Globeset.com>
Date: Tue, 21 Sep 1999 12:45:54 -0500
To: "'Greg Whitehead'" <gwhitehead@signio.com>
Cc: <w3c-ietf-xmldsig@w3.org>
Message-ID: <001701bf0459$27d2cc70$0bc0010a@artemis.globeset.com>
Greg,

XHASH is an XML C14N algorithm experimented at Globeset. It has been
inspired by IBM DOMHASH but processes each element without recursive
hashing. In other words, each element is canonicalized in a way very similar
to DOMHASH but the result is fed directly into a hash algorithm. Unlike
DOMHASH, end tags are also canonicalized.

However, considering current work in the C14N WG, Globeset will not promote
XHASH any longer and will adopt the standard specifications to be shortly
proposed by this WG.

Sincerely,

Richard D. Brown
Chief Software Architect - R&D
Globeset, Inc. Austin Texas, U.S.


> -----Original Message-----
> From: w3c-ietf-xmldsig-request@w3.org
> [mailto:w3c-ietf-xmldsig-request@w3.org]On Behalf Of Greg Whitehead
> Sent: Monday, September 20, 1999 3:15 PM
> To: 'w3c-ietf-xmldsig@w3.org'
> Subject: XHASH / DOMHASH
>
>
> I've seen several references to an XHASH spec, but can't find it.  Any
> pointers would be appreciated.
>
> In the meantime, I'm looking at DOMHASH.  The DOMHASH spec
> defers to DOM for
> normalization, but I can't find any specific recomendations
> in the DOM spec.
> The closest I've found is section 1.1.6 (Case sensitivity in
> the DOM) where
> we find:
>
> 	> As such, the DOM assumes that any normalizations will
> 	> take place in the processor, before the DOM structures
> 	> are built.
>
> I've seen reference to a W3C WG on XML Canonicalization, and
> expect that all
> questions will eventually be answered there, but what are
> people doing in
> the meantime?  Are there any test cases that I could use to
> test a DOMHASH
> implementation for conformance to the current spec?
>
> Thanks,
>
> -Greg
>
> --
> Greg Whitehead
> Chief Scientist
> Signio, Inc.
> 1600 Bridge Parkway, Suite 201
> Redwood City, CA  94065
> 650-622-2250
> 650-622-2201 (fax)
> gwhitehead@signio.com
> http://www.signio.com
>
Received on Tuesday, 21 September 1999 13:47:14 GMT

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