This signature file may be used to cryptographically verify file integrity, like this:: $ gpg --keyserver hkp://keyserver.ubuntu.com --recv-keys 0xA16EB94D $ gpg --list-keys 0xA16EB94D pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] uid Turnkey Linux Release Key $ gpg --verify turnkey-revision-control-12.1-squeeze-amd64-openstack.tar.gz.sig gpg: Signature made Tue Jun 4 15:52:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f1441877d49204e33993bbf82d00f25f15a5f22b * md5sum 28abb098c46622b3daa81469a73f234c You can calculate these on your end and compare to check for errors, but cryptographic verification is recommended for security reasons. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrg0kAAoJEIXCXpWhbrlNOYYIAKCpvd/fwF8gfFlydwq56JXM I1+ljh1abIzRgxp/PH347yEgUFq94YRBweDtAlpXpWT9/sDuavtSdlBhDH7ZP3z+ GdPDhEjf4jWM0c3Qsv8tmwgEDaI1qne8XGM+sCxZH4mms/NYVDxkiOEdj73PCBmp Kq483oyc4hpah/Q8A1IyKtmFEcTRJPi0cPKd9LlOIXjGyRqr62HN/8bvxOGelgky nZsuGebSmCFZ3QKAZGIk2SVNmctOLtxPTu2t6hYJRl8jH6h5VC/6x1Tj0MsoVef9 1svY8AsOHjBCPF3eULfmKBADDYRKNm2bpfQb/9/jPsjxTH/DzNTd32l2HlX9/vA= =8AgB -----END PGP SIGNATURE-----