root@vmhost:~# apt-key finger
/etc/apt/trusted.gpg
--------------------
pub   1024D/437D05B5 2004-09-12
      Key fingerprint = 6302 39CC 130E 1A7F D81A  27B1 4097 6EAF 437D 05B5
uid                  Ubuntu Archive Automatic Signing Key <ftpmaster@ubuntu.com>
sub   2048g/79164387 2004-09-12

pub   1024D/FBB75451 2004-12-30
      Key fingerprint = C598 6B4F 1257 FFA8 6632  CBA7 4618 1433 FBB7 5451
uid                  Ubuntu CD Image Automatic Signing Key <cdimage@ubuntu.com>

pub   4096R/C0B21F32 2012-05-11
      Key fingerprint = 790B C727 7767 219C 42C8  6F93 3B4F E6AC C0B2 1F32
uid                  Ubuntu Archive Automatic Signing Key (2012) <ftpmaster@ubuntu.com>

pub   4096R/EFE21092 2012-05-11
      Key fingerprint = 8439 38DF 228D 22F7 B374  2BC0 D94A A3F0 EFE2 1092
uid                  Ubuntu CD Image Automatic Signing Key (2012) <cdimage@ubuntu.com>

pub   1024R/C7917B12 2010-05-17
      Key fingerprint = 1362 21EE 520D DFAF 0A90  5689 B931 6A7B C791 7B12
uid                  Launchpad chrislea

pub   1024D/98AB5139 2010-05-18
      Key fingerprint = 7B0F AB3A 13B9 0743 5925  D9C9 5442 2A4B 98AB 5139
uid                  Oracle Corporation (VirtualBox archive signing key) <info@virtualbox.org>
sub   2048g/281DDC4B 2010-05-18

pub   1024D/3E5C1192 2010-09-20
      Key fingerprint = C474 15DF F48C 0964 5B78  6094 1612 6D3A 3E5C 1192
uid                  Ubuntu Extras Archive Automatic Signing Key <ftpmaster@ubuntu.com>