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-owncloud-13.0-wheezy-i386.iso.sig gpg: Signature made Mon Oct 14 18:29:46 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum ff73b50e9dd07b3e653c08dc35a6a5a054aae26c * md5sum c354c624015d860cbb6fd8e95bee4368 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) iQEcBAABAgAGBQJSXDgPAAoJEIXCXpWhbrlN7u0IAOW79I+Y10r8lLJjn4fZ0LJZ 66ynirGbC/K0aBxDtpnljxERCjKDMJoedmN4CPDHuOPX4dHrE8GxrLcF7omH8kG8 fecK9VPcfEwjxd81Z8V/5E0rVIC08U5fhG7pXSlWzCisP1c6UvDYedABtSBVOY6u xdEncBhibkoHVO7zpsT7zjIKIyrLrXNaC2PSN37SbCnJWq0+a5VOhEVmqZ/z9qKJ M+AjNIy6am1lck7KlmZZU74GsT9FoWMBBT6Uz6CX8bpY7gZV78VwglOjqUpCMiL2 o83A4CIB7tfDt4Hx/qTvPLQXBfUuQjIJWZqwNBFXEyE+4PzTDDNg5fYVA5GQplk= =Ayqo -----END PGP SIGNATURE-----