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-concrete5-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 08:56:01 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 6105518cbfd0735aeea4314f9da8281171fbd173 * md5sum b58d070ec7938baa3fc22ebbd17d55d4 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) iQEcBAABAgAGBQJSc2yZAAoJEIXCXpWhbrlNJzAH/34Wp/zd0/FzJWj/lOugEgxO 76vcO8VGgcEfCC2XzZyUTVkatbNRlia4vPSKe0yMijM5pFs+SUoeSU8jzfaIVePT dWPafA7bhOvxGAAHlF3rDLajVg3Kw/kXWM1n7EfTQ7+uF9OPzeZxps8B/y95Rdfv X6UhIilnK0BRUSMeyRDikVdKU+e8COkELcN6WiXl8sr/LRrEASCfgqzx9UuYa9ph IK6Z+3iS0moFlcqbKlscZmwrRtzXAFF8IfsXMxwr1YmIt7t5pgUHf8UHIYJlrwtW buJ0XWn1rkJf/UqLvmHp/ZQyenitlujw4BQ1Wk9liFkRiEXuTqogcRRJdNqS6OI= =c6hT -----END PGP SIGNATURE-----