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 debian-6-turnkey-domain-controller_12.1-1_amd64.tar.gz.sig gpg: Signature made Tue Jun 4 13:08:39 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 5bb513e1c547c28d536e294ae950d08c29a3e368 * md5sum 5a06af73edf7e0ebad2b9570576430c9 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrebPAAoJEIXCXpWhbrlNl20IAKYr++7sd84cqXTjKIbS+CM0 v0yf0LCZjXDcaZTP9joQowZxfkm0yiIQkZ8oNtZUtcNgQ1bPmxrewtBqaLsc256d KWXUKVVh7hflvTue5IZjap/rfmkPeNj0nKBxNewFbhhBjDLPvY19odQ3wyQgwqKR 3jLWSIZyJiQVgwCjH5kQwzGHo7ELL9grWwJso24WjMTk/zBbV+9pjh+DUAA1KqlW a7hyQWf+fmzHQUCrhsNGuAG95X/XHujppu4Yt4CaY75eLbi2aJaykOIEKZBmSGRk bhMwiLIT0yKsyRBehjqmtDV4tA9eAfqvl95RjwLQx1jmB2VK+9wFerSwm+7T95I= =c02n -----END PGP SIGNATURE-----