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-icescrum-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 15:31:29 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 4e259cd9eff55420c4d13a9a41a0964b38cd967a * md5sum 82fb3859c03ae404b66011df3b7544cb 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) iQEcBAABAgAGBQJQM6m7AAoJEIXCXpWhbrlNr8kIAI8+BJje5L5YIz1jCLFzCaO8 fyCDBlzERJzavVpXPY8RHaW8sROFH4ONvAAqO9a28xLRJu3xayuxZziexBT5OUWh AfpXH1FMnLRQNqFuC4syEwUE4sMPW1M1/dHw6nH9Bheqkv50eo1ErbStxWQ+ldpm yvAv5lj4YIzT/7fhpNRgnNilmbeaFKTnaeW64REPvS3jORXLAfLSqO4PQVdONVdM V6B8Rtf0rNbKgXhqXSygG8Tjc2FILpvSRDqdAKP8RL0Wd1IoumkPVj6HIqevaEcF G6hJxFDJvNesiS4JyaO3z/pS6/NoQHWnj/ntJC6m/v5uLUnKTO5SI+sRaXFjC/k= =KX6F -----END PGP SIGNATURE-----