> I send a message some time-stamping authority, containing the
> signature and the date and time at which I pretend to sign it; this
> authority will then sign this message with it's own certificate adding the
> date and time at which it signed it.
Peter Sylvester talked about this a day or two ago on openssl-dev (the
*developer's* mailing list). Look at the archives.
The IETF is finishing up a draft for a timestamp protocol. See www.ietf.org,
the security area, pkix working group, TSA drafts.
/r$
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