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-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 16:28:32 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum a1eab1d40329e8277a3c306e41bfc42157343c49 * md5sum fc72477d083dfc9395584655b871166d 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) iQEcBAABAgAGBQJSXW0nAAoJEIXCXpWhbrlN7eIH/2GrkiCWojQeO1VrCLv082em Ho3H7izZ1dEj+l9SJN002Jpjl5P0I0/sBRzN+T75eBnjfijafd6ekDosyblyn/n1 egaxKcfUOP+h0ruS9E0KTJDPPRZuvuasylyIBFmQPo1fUD9p8qjoW8Br97n47m4s THvXDyO4SYNA+4iWXB6sYNnMCisYIBeWm3rU+ZZF5nH7M9qUY3l8vG0Ak3kTWGga tgn9wrCNu/nkYsyOFiuWc2mZmrFDP+W1t3jzdtJa+V6Ucx9zVFuYE0I1osLwVNHg Ul/7StYWz8dSISfUddvDan+1nOtwVqNcwbUkOG7KSiVjD8TrFVM+v0zXf8pYkwQ= =Fj/4 -----END PGP SIGNATURE-----