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-simplemachines-12.1-squeeze-i386-ovf.zip.sig gpg: Signature made Wed Jun 5 00:04:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 601b4dc4ec6694d39c0537d5316f78cef1823ba8 * md5sum 4c28d25f20e6378497c636c3807db71e 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRroB5AAoJEIXCXpWhbrlNwwwH/2Ky9gpohn3aCKGJT97sXSoO Hc91XiXsjD3mwXaV2dwzplfmKvUCXgT8AfJ087I2LaHzpsfWQJKsnItkYejjQrQ/ mbd5Zx0LUwLGDijUp6lQzA6x7x8o+VLmXXVBzmEwRpvFSyqBFqjfoPwHqmDRmso4 mrUn3zNlEkxjCwI18X2XlkHG+RZNWNXgyUSg/Z/DKL0E4ThcaUKAgbE13TD3f57q pQm/KJUlzXJsGsZ8cN6VDSjZCnV/TkABZfR0qt5HvgUqzcDlAEgHEV+lK2Je8d18 4G5TxTH0/CcbaWdo2JKWhwtg/lysHRNo2+yucQn301jLNQ6iInA1PmER8v2OuRw= =+vHw -----END PGP SIGNATURE-----