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Bug#254692: marked as done (On keysigning page, give better advice)

Your message dated Sat, 12 Feb 2005 12:41:32 -0800
with message-id <20050212204131.GA2725@localhost.localdomain>
and subject line Bug#254692: why is checking the key ID required?
has caused the attached Bug report to be marked as done.

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From: Thomas Hood <jdthood@yahoo.co.uk>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: On keysigning page, give better advice
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On the keysigning page


you should mention that participants should verify that the key ID
and key size of the key that they sign both correspond to those that
appear on the slip of paper that was received.  (I.e., a comparison
of the fingerprint is not enough.)  Furthermore, only user IDs that
appear on the slip of paper should be signed, and only user IDs that
have been signed by their owner should be signed.

See, e.g.,

-- System Information:
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>From kraai@lafn.org Sat Feb 12 12:42:53 2005
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Date: Sat, 12 Feb 2005 12:41:32 -0800
From: Matt Kraai <kraai@ftbfs.org>
To: Thomas Hood <jdthood@aglu.demon.nl>, 254692-done@bugs.debian.org
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Subject: Re: Bug#254692: why is checking the key ID required?
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On Fri, Feb 11, 2005 at 12:07:48PM +0100, Thomas Hood wrote:
> On Fri, 2005-02-11 at 02:31 -0800, Matt Kraai wrote:
> > According to
> >  http://www.uk.pgp.net/pgpnet/pgp-faq/pgp-faq-keys.html#key-public-key-=
> > it seems that the key fingerprint and key length should uniquely
> > identify a key.  How would checking the key ID thwart an attacker?
> >From the page you refer to:
> > A: As explained in question Can a public key be forged?, each
> > component of the public key can be faked. It is, however, not possible
> > to create a fake key for which all the components match.
> >=20
> > For this reason, you should always verify that key ID, fingerprint,
> > and key size correspond when you are about to use someone's key. And
> > when you sign a user ID, make sure it is signed by the key's owner!
> >=20
> > Similarly, if you want to provide information about your key, include
> > key ID, fingerprint and key size.
> For the keys that Debian uses at least, the fingerprint includes the key
> ID as the last eight hex digits, so it suffices to verify that the whole
> fingerprint and the key size correspond.

OK, I've updated the page.


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