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-phpnuke_13.0-1_i386.ova.sig gpg: Signature made Tue Oct 15 17:48:13 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 9d7efe892eb3e781b04b89a12fbfef456c928537 * md5sum 9d7341cd1986f1fc8ecf83aac20dfd87 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) iQEcBAABAgAGBQJSXX/VAAoJEIXCXpWhbrlNEeMIAJq0elqjcCoKq0cRTAb5EyRZ gaG+5ra2yNQReB9qpl9B1rdDDu55NnvAbX3H2bMACUZQH+99E2uEIV5Uw1aMtBoy rpddDXQymL7qA2caBmm/bssLIWNp49GdsE1FlGSpp2Gk4L5QSdha+o77471mxdR+ dzu/sWNd2dpAtEg7huKjSY055PqN89+m8kn/8jbvNSdZLMF5u9ZqILNTH/RW+xYD zQ3lZT4Czb+UPSJgtDAzd/Jkwmhi5M17LmplEmDqrz5NgJakI4cCoBZuz0SppEHF ve0o7c9GqXMQrgP6EMIVf6lIDU0Io8iqYCchT8jBkcxXKWgNUxCzsuJThOweTdI= =RacK -----END PGP SIGNATURE-----