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Re: [Gnumed-devel] GNotary

From: Karsten Hilbert
Subject: Re: [Gnumed-devel] GNotary
Date: Sun, 28 Aug 2005 15:56:36 +0200
User-agent: Mutt/1.5.9i

On Sun, Aug 28, 2005 at 08:39:38AM +0800, Syan Tan wrote:
> X-Mailer: AtMail 4.03
> How does gnotary prevent the timestamps in signatures from being altered at a 
> later time
It doesn't. But doing so renders the signature invalid.

> , or a stored signature of an original document be replaced with a different 
> signature of a different document at some other time , and that altered 
> signature 
> also being passed on to colluding client ? 
What help is that to potential cheaters ? You keep a signed
hash of the document. If you hash the original it needs to
produce the same value as the signed hash shows.

GPG key ID E4071346 @
E167 67FD A291 2BEA 73BD  4537 78B9 A9F9 E407 1346

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