Debian Archive Automatic Signing Key (4.0/etch)?

[Hendrik Sattler <debian@hendrik-sattler.de>]

Hi,

I tried to "apt-get update" from a testing mirro today but apt told me?
W: There are no public key available for the following key IDs:
A70DAF536070D3A1

OK, maybe a new key, let's look at debian-archive-keyring:
gpg --no-default-keyring --keyring /usr/share/keyrings/debian-archive-keyring.gpg --list-keys
/usr/share/keyrings/debian-archive-keyring.gpg
----------------------------------------------
pub   1024R/1DB114E0 2004-01-15 [expired: 2005-01-27]
uid                  Debian Archive Automatic Signing Key (2004) 
<ftpmaster@debian.org>

pub   1024D/4F368D5D 2005-01-31 [expired: 2006-01-31]
uid                  Debian Archive Automatic Signing Key (2005) 
<ftpmaster@debian.org>

pub   1024D/B5F5BBED 2005-04-24
uid                  Debian AMD64 Archive Key <debian-amd64@lists.debian.org>
sub   2048g/34FC6FE5 2005-04-24

pub   1024D/2D230C5F 2006-01-03 [expires: 2007-02-07]
uid                  Debian Archive Automatic Signing Key (2006) 
<ftpmaster@debian.org>

Hmm, maybe I missed an update? Let's take a look:
# apt-cache policy debian-archive-keyring
debian-archive-keyring:
  Installed: 2006.01.18
  Candidate: 2006.01.18
  Version table:
 *** 2006.01.18 0
        500 http://ftp2.de.debian.org testing/main Packages
        -10 http://ftp2.de.debian.org unstable/main Packages
        100 /var/lib/dpkg/status

Nope, not there. How can I verify that key if the pacakge that it should be in 
is not updated in time?

BTW: during all that time, it is still not documented, HOW EXACTLY I add a 
key. And I mean the whole procedure and _command_ _line_ _examples_! The 
apt-key and apt-secure manpages do not mention the FORMAT that they accept 
(and how to export from gpg to make apt-key accept it from stdin).

HS