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-zurmo-12.1-squeeze-i386-vmdk.zip.sig gpg: Signature made Wed Jun 5 01:27:02 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum cfcf98a7f21e9796a8d1a2e75bea6781593eda3d * md5sum 47edf916bf8b1da85de4376b5f7cafbf 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) iQEcBAABAgAGBQJRrpPaAAoJEIXCXpWhbrlN0+sIAJUT9paR6ga5TWe0php1WjhI ToYP+HjTczEkcomIzgfgoh54uGmt7KxP29i9GWb84jnIU6q758o9zGE38y9kwF+7 XasqvC6TpO1amQSr/0hie7cnNHJaWGELcAkJ5V03MpdpVaA4yJxoMHcWbNGhI9Wt ccP11NJ8xXH9MSaTe5cpj88y5fXN/GllDS9+6emxClIqdPV7vdsj6RqsvNpyo6PP 96gPin3hOZQvWhEAOgPomeuvkN7O7rreDUCYocoRxvR2In/dA6Rh62pEV4n3FPDf CQ44iurMeYtBuxSFQ4i51dANbYgIvyhfXVu+TJycybXP0QKmJlSCp74G4pRMKXw= =4EIj -----END PGP SIGNATURE-----