$ sudo apt-key list
/etc/apt/trusted.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>

pub   1024D/6070D3A1 2006-11-20 [expires: 2009-07-01]
uid                  Debian Archive Automatic Signing Key (4.0/etch) <ftpmaster@debian.org>

pub   1024D/1F41B907 1999-10-03
uid                  Christian Marillat <marillat@debian.org>
uid                  Christian Marillat <marillat@free.fr>
sub   1536g/C28DCC42 1999-10-03
sub   1024D/5D3877A7 2002-08-26