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-wordpress-12.1-squeeze-i386.iso.sig gpg: Signature made Thu Apr 18 14:22:10 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum b7d0df0c34d4ad7994975a3739939226c9b22ab6 * md5sum 6b2b4943b5dfa886b1e5d036d0857e21 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) iQEcBAABAgAGBQJRcAGIAAoJEIXCXpWhbrlNiIgIAOaVtIduWDpFUh1kKcxFcTqt o/aF9PKWh1YZSk+ZzFV7fujUZM9hCYQOcIk0DC9g3jc+2liaI8LqbrS12otAKk/t SrBD/8WZB6viABviwW3HXhBUs49UbA8DKfGyshsdX/Usj1Cyz27fhKHgv+PGBzh+ tb3F5MQM8elBddsSfbuQ+D3BKQgK5ZD33GuD4wYeaPzDo1NMn1+BiGy1cfo3MTS3 BYhxixJ94ri2ItxaNCm9q3dffCr8yFlCbStd10iVq1F6guKOX2SHaiQRz0Ln9wqy iXl2g7GYU6VKHAylsBzjoAdTeH401TcVkBgHua+sM874/ayVn6y1I3UdIHqO3u8= =M+iq -----END PGP SIGNATURE-----