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-trac-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:51:45 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum df82bf6842e20d4ede0bb4a36c30a7f5ae19357d * md5sum faddf0367aaaec87d3fdc6c7185708a3 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) iQEcBAABAgAGBQJSc3mqAAoJEIXCXpWhbrlN4SwIAKUVowWqJi4+Jy0/oeYIHhZo rYl08SJ/f3q9GPEXsw+/WVRY5B53LSUxy5sp7I3WX0YtXg0wVy88f5lSd+DHeJeL ymKfxfPxLksOJf6YsGmlIoQtRqy5X9DNUNib5Ooa8YijGkqtz9EJJye8oiwwVzQ2 BZ/kJQJDpdEJKB5jN7BDuwIx7GeCfEkoE0nh+4yGnlLQNGmhFYGFGbBbfMaYpxrd c+LuEKL95nvY8jF++rs2F3BXNWytt2yEWVBwV+hAfSsFw59GCX4b+R/JIJ2T9Ind vDMeJbqe0jH8kJspWhQ4BNcKKvFeCymjV5XfO353geN7/PoQfmw0fsqKUHO3AW0= =5Ps3 -----END PGP SIGNATURE-----