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-7-turnkey-sitracker_13.0-1_amd64.tar.gz.sig gpg: Signature made Wed Oct 16 10:13:17 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6a78e7bbbd0ce262793d371d54dfe1e9edc90fe7 * md5sum 8452c7c60dffd42271eeda2c977ebd44 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) iQEcBAABAgAGBQJSXma2AAoJEIXCXpWhbrlNxWkIANi+Z2AfjV/voVFexnkK4BrV jx6Kas+LU86Sx4mpw6UD1/Ts2X93Z9GyDQNDPDajFiDCEMVrLlcfUKX5HhWXXk8U duNMoL4s1PyVoUyZK+hEmvVYYdh/6Z8Pb/zukvRNmAjX0eOYV9XZmHXWXx3Teek7 kCNvolY91/abikhmZ+SW/kpum9x5JPSNwFvP79g2NAVUX3EDnLApEeXhHJz0GYc+ hropdmgsBi21tdqpXwPXtDoL7CUzG8Wxpv86SQati61BNS07DWpKmR/yjLHqWP5/ 0TAGFTPGljp5hOm5GF763/kFu77FF4rQOiGnWciSg8DoTNlRbH8ay5oRqMbOZyA= =eLCv -----END PGP SIGNATURE-----