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Posted by John Elsbury on August 16, 2004, 8:15 am
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>Hi John
>After looking around for a bit-here is what I found-
>Office XP and above support digital signing of documents-to verify
>their contents haven't been altered.
>Acrobat 5 and later also support the same, through personal digital
>certificates-the same ones used for S/MIME.
>We were looking for a way to sign our documents-namely contracts and
>proposals, as well as create verifiable content for training materials
>and courses etc.
>Thanks for your help
Thank you for that information. Acrobat Reader (current versions)
should obviously have no problem with providing an option to verify
the signatures: I haven't seen Office XP or above, but I suspect that
you might also need to be running at that level to "prove" the
signatures - I shall have to do some further research myself when I
get a minute.
My preference would be to use PDF for any document where the
formatting matters - with Word documents where the formatting was
critical, even something as trivial as the recipient having a
different default paper size can make the displayed document look very
unlike what is intended.
I am still interested in the business need, if you have a moment to
explain? I understand how digital signing works, and what it proves,
but I am trying to imagine a scenario where it matters and where the
local jurisdiction is geared up to accept digital signatures as
binding evidence. are you looking at a fully "paperless" scenario
like this:
I send (by e-mail) signed proposal to X: X accepts by e-mail: I send
(by e-mail) signed contract to X; X accepts and re-signs the document
to prove this; we both retain doubly signed copies of contract for
"probative" purposes.
Regards
John
>
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