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-phpnuke-12.1-squeeze-amd64-ovf.zip.sig gpg: Signature made Tue Jun 4 15:07:30 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5f2c203eb21ba84b69efd511a0cf7aac0d3fba9c * md5sum b56967d58f751c0c26ad5b2d6045f0bc 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrgKpAAoJEIXCXpWhbrlNTfwIAKgcWIn3GKRO0I71+B3Tvk+0 cWPUeVIpgwbVRY5BX+K9uxdBEIIbeg/Q3ZXGXt4MR3kljqrIXwjctL7k3Wtu5p2b exT3ZibvBZuh1pina28Ou1So/iUBryUPjpKuKIqe3eMVhQsXilLMIvVrkSuQLvw8 3EwSSKSRmWuRWi0BgXZFHIONls3Wb/jRX5SoFSA8oQuuHwGCcduYzc60jebhnYau Q0kmeHhQpJdsiaWem65s7e382NEGd1rfdm9LCqOQuwwvovbRTGjnTNCu/k8Gtagm 9XtuiuUUjYb0MweI9rFkuRHmxRJECQNXaC1rEawGJJnW1iK83AENQ0CebQYdNNQ= =VFmz -----END PGP SIGNATURE-----