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Several people asked about why I updated my key.  There were basically
three reasons for it.

 - The key that I had been using may have been on systems owned by my
   previous employer, and therefore available to whomever ended up
   with those systems.  The old encryption key is now revoked.

(By the way, if you know of anyone looking for a Unix System
Administrator, I'd love to hear about it. :)

 - The encryption key was a 1024-bit key, and I wanted to use a
   stronger key, so I created a 4K key. 

 - I had several uids on the key, two of which are addresses at which
   I can no longer receive e-mail.  My signature on those uids has
   been revoked.

As for how to do all this, I highly encourage people to read the GnuPG
documentation, and most especiallly The Gnu Privacy Handbook, which is
in PDF format and found on the GnuPG homepage.  The gist of it though,
is that I ran gpg --edit-key <keyID>.  This puts you in an interactive
session.  The "help" command tells you what commands are available.

I then created a new encryption subkey, with the addkey command.  I
subsequently revoked the self-signature on my old uids, and revoked
the old encryption subkey, using the revsig and revkey commands,
respectively.

- -- 
Derek D. Martin
ddm@pizzashack.org
PGP/GPG Key ID: 0x81CFE75D
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