[kdepim-users] About Crypto

[Kishore]

On Wednesday 07 Jan 2009 4:50:43 am Ingo Klöcker wrote:
> On Tuesday 06 January 2009, Kishore wrote:
> > On Tuesday 06 Jan 2009 11:16:16 pm Werner Joss wrote:
> > > Am Dienstag 06 Januar 2009 18:07:44 schrieb Kishore:
> > > > 3) What do the recipients of my mail need to do? I can help with
> > > > colleagues but probably not so with external people if it
> > > > requires them to perform something complex before they can read
> > > > my mail. What would they need to do?
> > >
> > > in short: anyone you want to send an encrypted mail to, will first
> > > have to send you his public (gnupg) key (or you grab it from a
> > > public keyserver). you can then use this to encrypt the message -
> > > the recipient can then decrypt it using his private key.
> > > same applies the other way round :)
> >
> > Interesting... always wondered how this worked! :) Oh and it seems
> > that you can only do encryption with rsa keys  and not dsa keys!
>
> It's a bit more complicated. With RSA keys you can sign and encrypt.
> With DSA and Elgamal keys you can sign (which is done with the DSA key)
> and encrypt (which is done with the Elgamal key which is generated as
> subkey of the DSA key).
>
> I suggest to create a DSA/Elgamal key (i.e. the default of GnuPG).

I used kleopatra to create a certificate for me. In the end it when i chose to 
upload the certificate to a directory service, it defaulted to keys.gnupg.net 
but then it warned me that before exporting, i should make sure i have created 
a "revocation certificate" so that i could revoke the certificate if needed 
later. What does revocation certificate mean? And how do I create it?
-- 
Cheers!
Kishore
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