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-magento-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 16:31:14 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 02236c1c35041f17f20a3ea2954a951037c08aaa * md5sum caca605619c80461ad512a8de7b98346 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) iQEcBAABAgAGBQJSXW3HAAoJEIXCXpWhbrlND38IANx+is8tK0KIWV0OIFB43zPz Q+1mF5QcBb05KjWZl4eg2+RHoAgMrJxvNh/asn0OmV7rj0lbGdrFm5MjMoxhHM5o HCw+cROrR6VDw22MO7We0EWHvFj8SRULw1fTCFRtBLIQQThxZLH5xJpNJX0ihP0g oaeJk4hUh3lpYF6QKc13pgmL49QtcFDn2/AaX4vey63/8HY2zJ8FtsN2sEZppHa5 6jub4cPZd/8D2iNbeAyeE7dZZtAs8xc3W/S4Hn0QErohX7G6exIC7AA/lhABM0ZG cQ+Pg4oiFpJIGVgRVvBhJAEVJ2CWE9SsfDMhOG4v9ClYKtiZGd74mHhH9x+18i8= =qOsb -----END PGP SIGNATURE-----