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-tomcat-13.0-wheezy-i386-vmdk.zip.sig gpg: Signature made Tue Oct 15 19:31:38 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum de33e5a5eb293f22ef9d2054eea0a8c27511de62 * md5sum 23651e3a56ba0a53846024f08a75c060 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) iQEcBAABAgAGBQJSXZgOAAoJEIXCXpWhbrlNDoAH/jDY3NfQzbNCRwYutxco25WF CN/bl2SGnLMrTrPpoiQm9hfvWZjgwDJdOmkTNttzLDovXiXRPiUYqyLXGGz71ZjE /RBHgBkgEOOjG1rSuyKZjjGh3I3/RXTxTXPAN19nwIAZVrOHAnRLRYIJseVHcWwa QqsSNj8GUOV7ex0GLAmI6sxtwJUbzmYQGGGtCjDnlU13erMT6UpJEbzzFjFu6byV egjhfefK23wMaUw3nNq3g3qmijhuE9v4+i9xvi1G/xdvHGMf4aP+uQ1VW451/aLu 6rGmBAIldKuvSfmYgZrOjxPdwn/dV5RQidB1UV3qWhg/pPErSMT5PHcdcerQEOI= =z0np -----END PGP SIGNATURE-----