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-gallery-13.0rc2-wheezy-amd64.iso.sig gpg: Signature made Wed Aug 7 07:58:26 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c8ee89dfb4297bad64dc6d4494c163001efc9453 * md5sum 99af96bc3142697428fba76c992afe68 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) iQEcBAABAgAGBQJSAf4YAAoJEIXCXpWhbrlNwysIAN2kJwNJFjuWxv2bV9BtTp0G 1n+TfewOPD6O+1g+0LxaOYRH4Z45rEarqpMrYo9h2VlqYH4Pa8UtE3OLp12AtZnC v/4g9VDGiXZbTKNWEWSYJMiVPzd5QxWW8419ZcoKYq78a7A8gJjJLNUJZkQIiHji 6HCjp2uGaIWmnubT4pcA6H3DP0DK56xolTs9532rRoFHV86PU5kYcSCrY0MUj6eX vn0K8+zEiuipRNkoA7s2NZGPxXE0s0fR41ZW4F69akmkCNaXry25XUL+YlZiSTY+ auyppyXR1lZISw4A7yYWmGc3YLRpZZeWWKayyaL9Rn+lvPWZcoDPxZjfAHeZeRI= =TEdh -----END PGP SIGNATURE-----