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-amd64-ovf.zip.sig gpg: Signature made Wed Oct 16 09:37:46 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum c0c1bf96b474cf273c02328a430d2abecd09e7e4 * md5sum 90b8a9870162f256da33af231ad24ad7 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) iQEcBAABAgAGBQJSXl5fAAoJEIXCXpWhbrlNw+UIAORfLSeyJMWn7Wzgc+CTmpc1 PHGtks1S43SlEk27Z1NkwcIQJqveSQJpA4JeeMQKAJaRXqwWZawN+bMNhNeb1yJF QIxdSaIWnidKmPRFb3UipbIDUn4yD1JbzJvg+cETj7QgJlPwoyg4wf0VpYZpFwH6 3/N62E482zstkY+7pQy8t/sMeb0jVRGYixyB3Ua/wbtfv8wwdurnqbd4376RoTar zy08hIDIU3i4SUfrZTEFAu8d+v/ugcGe1ggnXtuBp+g8qr5o8SN1y6AiMUtbQvw7 /cndPu/FMFXhuBlrnySjHsNu0VtRH8ROOnSRHEvDgofcgBmAdV+hPirfMXjHFEM= =I9k2 -----END PGP SIGNATURE-----