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-mysql-13.0-wheezy-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:19:54 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 3927552cf9757f93995517bd01601785b9894145 * md5sum 79e28a6a844ab57cd45d66da9ae0e805 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) iQEcBAABAgAGBQJSXlozAAoJEIXCXpWhbrlNPVQIAOKxll4UiDUEjrR1jVNOuI8F QelM/1SHR8/yPNQrSyeDp076oqiTy9p5I89VisZfniRfbRJ9gy0d7vHzbKF9Rs/3 +adw8eeulh+q5nqI+5Yagqn8L2APyY8LgKDpp/1NEKdelxQN1jADumhlc/9qxUBn AeNXWMcAZqfvP5LHpXYkuBbDHpHFtrI43cywQ8i8hglBqD1u5M/q5YDRx0SxXUpp nB1HNneDyuUoljQYghDLt1sKrDKZUTLL2XlLDOhguRS60oGkUdIUUufimvsm05uW tAyY3l6idqrsSXA9vkDrEmrRSybEvcjl147KwCqipvMxB9Es+Sm8JYWhoAcruEM= =Y3Ac -----END PGP SIGNATURE-----