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-symfony-13.0-wheezy-i386-ovf.zip.sig gpg: Signature made Tue Oct 15 19:30:45 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum f34eea49c3b24306081e10111399cb70b9e11824 * md5sum cfc4e2ea14de3c234cf96424bf533894 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) iQEcBAABAgAGBQJSXZfYAAoJEIXCXpWhbrlNAqoH/jkrPdVO5dxDL+swWMLT9xDi pvMz4tD1JajSpQzNx++4SYyMCx49xJRyBitF0mcMPGYTaqrERzcZB0UFPRN5IlOj RSpgU8mX4YbduBAyUnSbdsBYAq2u60aihT4qoLZv5geLBJY64jgUe94RKvoxr2w8 rs3JqwS1Z85IIoWmZlBqh5Fo2CWWvDJzoPn3kpheWbkpijrkYIfT6zyR0wvLiph5 3C1j8gds0J4cIZJzcc6xiVy+xwhBAVNfp2JdtwFQ3A7DVEfJVWTbsWUSKQLREKMh FAUa81tiVV0H9VWUOj8vHaL618b6VNr2MvnQ5REaqSXZZth6tOB+lWsjq04upFI= =wMH7 -----END PGP SIGNATURE-----