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-phplist-13.0-wheezy-amd64-vmdk.zip.sig gpg: Signature made Wed Oct 16 09:36:12 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 0e0acfba8517363fe1a67eac2c39cb3ad571c6df * md5sum ebc7b6f8075eacb36bb08fea4508304e 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) iQEcBAABAgAGBQJSXl4DAAoJEIXCXpWhbrlNWMMH/A5ZVAnqlOm7POyBRocZZ6KD zDl+nIyAISgpd+W7xg6Oi8XiZkLBtGDlTnt2KRzQhGrdjiA/4Ww5GHTsGi4jstJk BWnJKjc3KwU6vfsBQI88IQQwDWfHbRNxMUEfCZu3ErhlyDe5vcqaAT+ldst6YJgH YhL1VNXCpKZD3yj0o9I8CbVKfIgSAeDdwRvZD2D9xZJPpSvoIofbDcap5wJydiDn aoKjvxeuC1By++4dvKiID/SiGgvT18E2vIzL6pKu/Puq7wb04R5a+me6no2VGppI ZV/foHNa389sif5aajmhvra6Z7EUkDqWLMyD3u9phUm5Unnwe1nwH8uJMXyeWMg= =mwtt -----END PGP SIGNATURE-----