W3C home > Mailing lists > Public > w3c-ietf-xmldsig@w3.org > July to September 1999

RE: Canonicalization RE: Brown draft feedback on time stamping and on criticality flags

From: Phillip M Hallam-Baker <pbaker@verisign.com>
Date: Wed, 4 Aug 1999 15:20:33 -0400
To: <dee3@us.ibm.com>, <w3c-ietf-xmldsig@w3.org>
Message-ID: <004301bedeae$6d51b660$6e07a8c0@pbaker-pc.verisign.com>

> Throw
> away too little information and insignificant changes such as, for most
> applications, changing the character encoding or the line endings 
> character
> sequence, breaks the signatures, making them useless.  

Will make them useless if you send them over a network which does
not preserve these characteristics.

If you insist that the network makes no transformations there is
no problem.

I don't know of any network which transforms local time into GMT
in the body of a message 'by accident'.

We should only look to support data corruption which is intrinsic
to existing networks where the corruption introduced is readily
characterized.


I don't consider the manifest format issue to be one of c18n. It
is a straight syntax issue. If the manifest is transmitted over 
an 8 bit clean channel (MIME attachment or HTTP) there should be
no need to perform canonicalization at the other end.


	Phill
Received on Wednesday, 4 August 1999 15:19:22 GMT

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