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-fileserver_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 16:01:05 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b4118fe20ce36fa8b496b02ec938451924c3ae51 * md5sum 0b584f7706415ca53084e753ddc62e44 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) iQEcBAABAgAGBQJSXWa6AAoJEIXCXpWhbrlNOnUIANm7Pr4k5NM/u0Nwr6cW3vKL lWjzE+zIxX2Yjsw+f3HTsvTRIspwhCI/0CzEyKQDvKGZQQX4kWDAHNXSNSJrSYjj nWStk3LNB0hb02o7JWaJjjWfIQA7ilj5oFWjVq4Iiww5b6dNgHqGahsgrlSkkyHd lyV0E4viFGtTG6GC2krybudVeet0gKwpQSzps3zKExureAUfS7oUxIUc+LauaOnY GjDHeUjYbAQDTYhSylfisRnwKrQfSz2pVBtMAdsPDtvJ4CWWihcMQYHzUvLcu+iM 314td2jGdTx7sn4O5Q9WZdADT+UZqs5blTK5wEpchREnKAZ58U1PspiEld0wpaA= =BX4W -----END PGP SIGNATURE-----