Darxus on Wed, 17 Apr 2002 20:04:46 -0400


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Re: [PLUG] key-signing Thursday?


Sorry I haven't been more actively participating in this thread.  I believe
all new keys I have recieved are in
http://www.phillylinux.org/keys/phillylinux.gpg, and printouts will be made
before the meeting by MCT.  Less importantly, yes, I plan to be there.

(I encourage you to verify that your key is in this file if you intend to
participate)

On 04/17, eric@lucii.org wrote:
> I'm missing something here... How do I get my key to a key server?
> That's not on the web page (phillylinux.org/keys/).
> 
> Also, how do I know who's participating?  John Lavin is the only 
> name I recall seeing so far.

These are not things you need to worry about.  People are trying to confuse
you :)

Keyservers are another way of distributing keys, and if you'd like to
retrieve your own set of keys from keyservers, and print that out, and
bring that with you to verify at the meeting, that's fine, as long as

1) You know who will be participating
2) Everyone who will be participating has uploaded their key to a keyserver

This is a rather unlikely combination, as most new participants just send
me their key, and don't generally announce their intentions on the list.  

All of this is generally taken care of by me.  People send me their keys,
I collect them, and put them at the above mentioned url.  Somebody prints
the fingerprints from the keys in that file, and hands them out at the
meeting.  Then we all stand around in a circle, and read off the verified
copy of our fingerprint that we brought, and then pass around our photo
ID, while people initial our fingerprint and identity if they feel that
they have been sufficiently verified.  Then we go home, download the above
mentioned file, import it, verify that the fingerprints on the printouts
match the fingerprints of the keys we downloaded, and then sign them.  Then
you all send the signed keys back to me to be re-collected and put in the
same above mentioned phillylinux.gpg file.

It really isn't complicated and I provide detailed instructions to every
participant after the keysigning.  

On 04/17, gabriel rosenkoetter wrote:
> On Wed, Apr 17, 2002 at 06:39:31PM -0400, Michael Leone wrote:
> > All participants have to have copies of everyone involved's fingerprint;
> > it's just easier to funnel them to a central person, who then makes
> > enough printouts for all participants to look at.
> 
> Um, but if I blindly trust that the printout that Darxus gives me
> matches what I'd get out of gpg --fingerprint for that key ID and
> sign the key, I've misplaced my trust.

Nobody blindly trusts the printouts.  We verify their validity at the
meeting, and then go home and verify that they match the keys.

> Even if you do use Darxus's handy printout, you MUST verify that the
> fingerprint on that sheet of paper (that you verified against what
> the person whose key it is read aloud *from* *their* *own*
> *files*... that is NOT from Darxus's printout) matches with the
> output of gpg --fingerprint for that key ID on your machine BEFORE
> you do gpg --sign-key.

Exactly.

Actually, that's all here:
http://www.phillylinux.org/keys/keysigning.followup.txt
Which is linked from http://www.phillylinux.org/keys/ ("(example
directions)").

> But bringing copies of your fingerprint for everyone and reading
> your fingerprint aloud are redundant! It's still necessary to match
> the fingerprints against what you have locally when you get home.

If someone handed me a printout of their fingerprint that they told me they
had personally verified (the printout of their fingerprint against the
fingerprint on their screen), and which they had initialed, and then showed
me photo ID that matched the info on the key, then yes, I would be
comfortable taking that printout home and signing the matching key (after
verifying the printout matches the key I have) without them ever actually
reciting their fingerprint for me.  

But I think someone was just talking about bringing printouts incase I or
somebody else doesn't, which would then be verified verbally as normal.

> In any case, I think you missed my point. I was saying that I could
> just as easily print the fingerprints for everyone in place of
> Darxus, if he's not going to be there (um, Darxus, could you maybe
> say something about this? Soon?), and that they would be no more or
> less trustworthy than Darxus's printouts.

Yup.  Trustworthy to the extent that I think you could reasonably expect
the letters to not rearrange themselves from the time you verify them
at the meeting until you get home and verify it agains the key itself.
No-one should ever assume that the printouts are valid.  I could be
maliciously modifying them.  You have to assume somebody is, otherwise
the system breaks.


Most importantly.... this is not complicated, stop trying to scare people
away :)

-- 
"Whatever you do will be insignificant, but it is very important that
you do it." - Mahatma Gandhi
http://www.ChaosReigns.com

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