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-bambooinvoice-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 14:50:59 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 17dfba8082dcc49febf5f8cff6150fc0ee923985 * md5sum 0709ce5ce9658e93258051674f92f9f5 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) iQEcBAABAgAGBQJSXVZJAAoJEIXCXpWhbrlNjPsIANbVV+CADdR+JGN65II+Ra2B duZkzvczVpXYmiUz/swMrbW2+/yOlvtIWeCJMrSyX/RlhUP4mW6D8SO0Xd09Puf1 JH80ABf7jqKLUPNF/1qYgv7F/z/hcB6ruP5syJkWYNa7SQsXPStJiMQgzDex2uiL IzR4LdIGAnEFNpq/yXr9QtmVFRBfF4W/2vJmTQtzW+cBwzOAfQu/sk9jtSq5L0pU pPZdg3S6jm+ZhS4ctKJmjtpW0vXINpRB8sV1Al4o5Nx7dOzEp33Q56gCUQ4a1a/z RLjINVEEQCf7DjEbLqBEZzcd3nqw4+URXZVIBny6IT/UOINVe60B9CiyCng1FxQ= =GZaR -----END PGP SIGNATURE-----