key generation: email-address necessary?
mailing-lists-mmvi at bretschneidernet.de
Sat Feb 27 17:29:16 CET 2010
Am Samstag 27 Februar 2010 schrieb Laurent Jumet:
> Hello Martin !
> Martin Bretschneider <mailing-lists-mmvi at bretschneidernet.de> wrote:
> >> You can use whatever you want to identify your key.
> >> But in some cases, mail programs expect to find your e-mail.
> > that was my expectation as well. But what do the email clients do
> > then? Do they say "no key available" or do the look for the name?
> > What are your experiences?
> They can call another key with a similar name. :-)
> It's not easy to answer that question, as it depends on your own
> system. When you read a signed message, GPG provides a way to call
> automatically the sender's public key on your designed servers, when
> it doesn't find it in your PubRing; it goes on the Net, retrieves
> the key, incorporates it in your KeyRing and than verifyes the
> signature on the message. This process can abort if ID's doesn't
I know that it depends on the system; this is why I wrote the email
since I think that here are people that know GnuPG in combination with
several email clients...
Let's break down the problem: A and B have public keys on some
keyserver. A has no email address in his public key, B does.
AFAIK there are these four use cases concering emails and OpenPGP:
1: A sends a signed email to B.
2: A sends a (signed and) encrypted email to B.
3: B sends a signed email to A.
4: B sends a (signed and) encrypted email to A.
Use case 1 and 2 should be no problem. Based on the key information
saved in the signature the email client of B should get the public key
of A. The email adress does not matter.
Use case 3 should also be no problem since it does not deals with A
Use case 4 is the problematic one, B's email client does not know
anything about A. B's email client could search for A fore- and surename
on a keyserver...
What do you think?
http://www.bretschneidernet.de/ OpenPGP-key: 0x4EA52583
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