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-mibew-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 17:09:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 161a08d7336ef9567ac72acf01055afd14278760 * md5sum b4b77d0440aaccaa43cd23299a35dbfa 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 v1.4.12 (GNU/Linux) iQEcBAABAgAGBQJSXXavAAoJEIXCXpWhbrlNzWkIAK6Y+5OgrpjmlxFHDtocBGK9 qai+cv+6WXm2z+IeT5dVzhv/ve8vhOLZBNhNpqToQ+atgceTvsBokGl99pm5g8RA wVPClaseybkYo/Omxq0tdOjCaqygXPD/qFE9VhzI/zVvNn9JL0ANFb7LqclFRyI6 H6L6JGA7cdsamKVWFX0uoRTBqvQ7H85ISX8vputCl79oeEC5DQHe3qLocgWfnLw6 Ma6SxPyPZGd4UjBqy2gOpVu3eyQmv5pYtJ21S1gGxA2nKC9d65iUPJlyt45R7vk5 g1oc99cKbxhEDoh9QsFO4bZyxpsUgdXcWQLJd6OFpxjkI3mJflKlH8xiMdix7Nw= =E++E -----END PGP SIGNATURE-----