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-phpnuke-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 17:43:51 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 40fabd3b8724a807469db651cdefa9015cc8f4b5 * md5sum dc9d77f604f6db8d878d4a649956a0a4 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) iQEcBAABAgAGBQJSXX7NAAoJEIXCXpWhbrlN5MMIANG1jmYFZoMe+UKpAE+s9R6S jR0o+q4Im3gaYIh6sUYx1QXC7ix9gkk12+kYcTp1OmiTqQ7EEfhL9gw6glHkiENp AFAAxjs3cb/U7rfw2aV7a4Kg+U799iFuK0sq2opiZBeBI/xhtS/vGO3s8RFHi5Pw lUD635uJTqA6oVqWoi/dcWaRyYs1ZFIJxommPdOvuzPYMhiXv7VR18H9C7vUJu46 GageAroAq9it9t60S1msYgBM8a3HrycUwYdLQWqaegSihKAQMQxEVXdyn0UGX4qu 5kdVbMhif5mGuee9Zp3RDoCGQO117CDruCErMWFDHhwTLt/tZfUEZzTYqb6PGek= =rR9C -----END PGP SIGNATURE-----