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RE: Another requirements question

From: Shinsuke Honjo <honjo@sdl.hitachi.co.jp>
Date: Wed, 23 Jun 1999 16:50:11 +0900
Message-ID: <02a401bebd4d$05c3c4c0$25629085@obaq.sdl.hitachi.co.jp>
To: "Dsig group" <w3c-ietf-xmldsig@w3.org>
One possible solution for the "electric signature" is the
that enables the some part of authentication (examining who signed it) to be
processed visually.
The basic idea of this method is that watermarking the signature
of the documents (XML) into the picture(JPEG or GIF) files.

I'm not pretty sure whether the incorporating this method requires
some extension to the current specification or not, or does it disturb
the ideal of 'globaly secure resources'.
It seems that, at least, it needs to place the locator of the watermarked
instead of the signature in the <Value> tag.

              Shinsuke Honjo
 S01 System Development Lab. Hitachi, Ltd.
Tel: +81-45-860-3073 Fax:+81-45-860-1662

>Seems like this would require some form of authenticated GIF or JPEG file.
>Here again the watermark or something more than just the "picture" of the
>signature would likely be necessary.
>If just a picture alone is accepted, then it is likely that some other
>person method of authenticating it will also have to be there as well.
>----- Original Message -----
>From: Bugbee, Larry <Larry.Bugbee@PSS.Boeing.com>
>To: <reagle@w3.org>
>Cc: <>
>Sent: Wednesday, June 16, 1999 1:38 PM
>Subject: Another requirements question
>> Joseph et al,
>> Continuing my earlier post...
>>   4. Are there plans to support signatures lesser than "digital"?
>>      Some jurisdictions give legal standing to, and differentiate
>>      between, digital signatures and electronic signatures.  A
>>      digital signature is typically cryptographically strong while
>>      an electronic signature may be nothing more than a digitized
>>      graphic of a handwritten signature.  No interesting
>>      cryptography may be involved and the burden of proof may be
>>      on the relying party, but electronic signatures have legal
>>      standing.  Will there be a way to programmatically recognize
>>      electronic signatures?
>> Larry
Received on Wednesday, 23 June 1999 03:48:55 UTC

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