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-vmdk.zip.sig gpg: Signature made Wed Oct 16 09:19:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum dbfecdcb062859ed455474bd17c6c21d4da5347e * md5sum aa3d478baaacddc3923d0eec3e3afeee 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) iQEcBAABAgAGBQJSXlosAAoJEIXCXpWhbrlN8+kH/1dNN/XLBxbH6Vo6OrdvX0Q/ whRgOAqAjYf21qqIAAmj4iEv3dGYCkfVl5A6g8FEN3NSIDrREde73tKTCdshrzDd G9D6HE7rXvTSKmPuk0Y4tynkl5L8/kbwbLfnpT0NPz0kq26jg7deIqJSA0HJnxH5 l+cgeyo5pkLH5AsYquA2nT0VVIdf05LYcH6ae7MlEt9aYqNyihnLgyqfYPX5mGzl lIhwIC/j1zSko3XF5TYDC1lIQ7Qpo7tbM8zRJhCAjwCucG0eD5BlX71l/bO64v7j UeBHrPbobSLek7GpJNGKfs6Y/4ZvRWNhHMrjfljS2KJBUkonMLm2tzPNnGbjfpk= =ylq8 -----END PGP SIGNATURE-----