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-collabtive-13.0-wheezy-i386-xen.tar.bz2.sig gpg: Signature made Fri Nov 1 08:55:24 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 1481a02144674f8b04cc95f5218e39fba96eeacf * md5sum 96483de6562860e456fb39891e809d95 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) iQEcBAABAgAGBQJSc2x0AAoJEIXCXpWhbrlNEtYH/ivMZ90DOyMiFKHV4v0comTc vXAqb+0cIKbq0lLZY55XClmBiGBSxrB8AhUMzzabT+1SUirC/tlMv/xECkcA7DIO Bflu971JpDGxD6iX2/P7sLjyrNJJ9Xkd+HDIDuTYSVzvqJgRDEPHCAnmK15DN3FD YhQhTqrdG8SMCKUeKUJkYteH5wO8Ws+LNg9w6/DUHI3qRuP9eovHwNFTceNDx6KY 9UlODp435gMeHkFuKoZKw8BaXPI9AN/IW6KYweKRs0EleI5fns9jp/1M32799N3s Vwd7gx8VVa3dAy2F6RuTmFtzJ30DzwLSmCrQMLnPKTna37xRZzy7RbQuV8jz724= =uFB1 -----END PGP SIGNATURE-----