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-sitracker-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 09:45:47 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 482e529e29cc06e640b0477fa16d15eae4efc786 * md5sum 6d0b06447abb26e79d0d1483077241b0 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) iQEcBAABAgAGBQJSc3hEAAoJEIXCXpWhbrlNAH4H/2SF6iePzCmrNsSTxYn3TJ0q psywqynp3gnqUda4/aUNDh2yxwNYt8Trv2Ikqm7xAKuDhobF2tfT2fEJhPmdWUok oVnH4OPp1rjaLNiwZsCCpKDhcpPFXGy9B3+7LG0fPIt8teYce1v7F0MK+0mnSDK0 zbJhzBD0Sgk03VnJzQi/hXLmu6RTbULFW0pjq8eqcJTqhp6mZZ57wUwIJ00alXmW 3nNMF1YFiWGnm41/0/a+rZuVgR+DWHl8D0lzEK74D1MOergGHb8/F/SpQ4kvqZnf HzJXj+onwHmqG9R5k67sB0SLeNtICzzq/EWM4s6D4Fn1Gau2sn5wdOjfVKvoFFE= =KFSq -----END PGP SIGNATURE-----