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-oscommerce-13.0-wheezy-amd64-openstack.tar.gz.sig gpg: Signature made Wed Oct 16 09:43:29 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 41c2f8b9ae8466c3601e5873ad3217fd138c6be8 * md5sum 4fa8ada65408f834fb2f6cb8e2e338e8 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) iQEcBAABAgAGBQJSXl+4AAoJEIXCXpWhbrlNAkMH/3pXvk01GF/qVpQegCW5scHF o5EEQgCaqjWhkQHDgmpu5ts5tt0QHGAQhzZnQhtHupibDKhwKYVAn2wXUw8UA+eN YKMUUueg1g3jLoAKMHQlKpUjDyYAzPmLmpyglhPnvqqMVLkRxzOW+ctg6LeyyBQS 4EqszqH/9t5kZXftGhTMyMWz4KbEc+IIfkdpsophMZQJ+UJIjhGrwiQeWQZmBQ8p n1D7s6l53FuUKEGN3ixdHhQJkDKW/2Bj8DS+TmU6odp40gbmnOcD1EIPYvgdl16M xNAPyMQ6Tpx3x9s6dc8dBuzZePgxO+KxsHVYy6djkTarClG+2Lc6On6Ao0oVOIo= =BRp2 -----END PGP SIGNATURE-----