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-lighttpd-php-fastcgi-12.0-squeeze-x86-ovf.zip.sig gpg: Signature made Tue Aug 21 11:51:25 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum d110ff913b4132e0c6d35a188f22948cafd8777a * md5sum 49c5bfbc62f347a529aaf0d813839967 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) iQEcBAABAgAGBQJQM3YxAAoJEIXCXpWhbrlNq+wH/2q82lxlSM0Wvzcpasr/Jiu+ AJDm60eXtqD8QpbzydISndwX+uuMtw/7sWky6rdJ4sVvnBIy9KkY2+6C2z5ky0DA GV7vzFDgX3RjrEDhr1l5eHqNL17XZBEiTz6s7Y1kNYcRlZbBzN4Q662COC1htJYz q3BKh1iL951Irqtl1Wp/QLt6yaY+GP3nHUWdMcnSZB3hG1q6zViJ9stKHh/uxQ7R uEAhnisAuhC5hWRxD/rvWheNz93svwtTTE2JxQhWCE1JlnWF83pEoY89/uSSgQXD aUq+SXK70IndzRPxCzcLQykHOCLOvYaf3SHDwyheODvv9r3ucTHgiLx72mhD3mo= =Qod1 -----END PGP SIGNATURE-----