Digital Signatures using certificates has been available in the PDF spec for
years. If you have Acrobat Professional you can use it to apply a digital
signature to the PDF on OSX, although AFAIK the built in PDF support won't
apply them as of 10.3.
- Brian
On 5/15/05 11:34 AM, "Michael Pike" <email@hidden> wrote:
> Is there a way to digitally sign a PDF file - similar to how we
> digitally sign email messages?
>
> I am getting ready to publish a document in PDF and I want to make
> sure that it is not modified at all, or at least to make sure that
> the user can verify that it is the authentic document I created.
>
> thanks,
> mike
>
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