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-lapp_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 08:57:11 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 7e6a5c76a844ab1453457ce35b4d0181fb4dcdc0 * md5sum 6e652cc8c460fbeab710b380d05791bd 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) iQEcBAABAgAGBQJSXlTiAAoJEIXCXpWhbrlNnWkH/Roj/8KdT2Dvg+1xlQQIGCO8 h7VQjXzwXh0aDOoAKkpYLnNGQ/KWO41RJ9bNzdpDFF2+6+pffti62sEGZmvkmo8z rOi4CVzVGtiRWWGpbejYqW7WB5y9dLXIjTAObsi9j0hF/QBM6ZUHJwokaYcjdOwz ePmqxTCkn3JiBx1mS1g/Q9xYN3ADZXT/q4yok90PBbJSZ0DX3QMVQFeBRRQBZQ1m 5XA4Sfa3WAsXnceL5tIhtDqTUMXKYAHMeSs+Pfm/uOGc105yVNDISwwc8YJsgCVe cQaSTEH4d+F3ysatAs3L3sQdbU8xMRGSp6AQadSm2QbkYgsdOVkr5/r7TX22M/Y= =NkkX -----END PGP SIGNATURE-----