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 debian-7-turnkey-symfony_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 10:23:09 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 02a5ef300fef03d8dfedb432696bdf4893e66815 * md5sum 88741f267ba7298f4cb99632ccb54405 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) iQEcBAABAgAGBQJSXmkFAAoJEIXCXpWhbrlNIQoIAIRsUMTW2RWzmBuuxU9FIMLv JyIB8rdVFlSbMn5lK5BN/aUWW9Jf9quaJgBcjj4UvAZZUzxprGPNAZonMb+DlkR7 NTwN6Qvrp+9EKPDOe0xX+/JWx2pEt8C1G1N7RcJJ4MSjNZOQmzOgbXxZY5P7TPPy 3YjacB6gUws+/PRcfU/y3V13NwBf2AzNzzBgsBW5bcX0cKCA3M7jRVYiqE9RHBU+ UjDjwQlR1k2uJHfGJGO3JblcNKeekGvTKwJQ4bbmsLKh/aFdNGb1AxtpOQJFEH+f HEJ7mAAvBQm0rPLl8CYosEyUgDe4fMGnCVvffy+zav9TG43RwEAhm4hIWxy/xkM= =onjL -----END PGP SIGNATURE-----