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-silverstripe-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 10:04:07 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b8a61f0923042414e9603dd9e495891718b61540 * md5sum a1848246c7893743de41f99bb475edcb 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) iQEcBAABAgAGBQJSXmSMAAoJEIXCXpWhbrlNe0MIANbhJ/0Vxxbm8yYBo+cTV2pi UnAEw2eEiF0+4YfV/nPWWqYLO4dCgSR/jP/SrUvlT8ZQXFY0puKALqLVmVAOWaAZ jEpL7NbWextbDk94Yb71brrDECf/xsoZ7pt/GD5OYfSy87w5hIkBbysOv5l9f/uV tj33QwucRtWTXZSrwfsnkyctm6+vcmUWF+tgdzVQIoCdFCfHaJZ3ZlHE6nw5Orje keUJb4wLsArQUTEG6aGD6ghv4sf+JqoY1l3HqYf0SPL+QkePAsQyyfiETQG26Tq0 ykSMNWc+4mEendPbYcFTZRohChLhr/WSbhQqeY08L+9jSaCx97zt2uw5j8hrGNM= =A4rX -----END PGP SIGNATURE-----