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-mambo_13.0-1_amd64.ova.sig gpg: Signature made Wed Oct 16 08:59:43 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 2c3b7005084a130d757c54e8c2f5537e7637377e * md5sum e4880fca8d9b39148f0b4e41a2255d41 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) iQEcBAABAgAGBQJSXlV5AAoJEIXCXpWhbrlNyV4IAMYgESvndMRvEesKyTK0mI53 8P5monMBOJMFiuzOHEO6esrk4tvfNiDOGP9ojOV4QruY5Ivk59O/5CPjuKipBHfh WbrPWs+v2BGgnAvlgSDaGB3yEMS7EQgmu9l74ajkAxthURzqoZ9MLiM4cEhIxt8a 7LbO/tTN2wl+gQv1xY1giahf9HDBn+wiH6Ta38Gn/aGZ2iCUFrfRqUaJTq1e8FSP DZpWz0zrTWQ0Rzo9Rt4I91ueK8cAYnILHrzPGTdchhIG2QlAc0XCHC9Q3cP+lvXg 97XK0eA+XWScnEE2MbjaPb95EQ2ZVrK0/6mfG/VpxCSf4Ln/jc51TyIDrYJijEM= =ydaV -----END PGP SIGNATURE-----