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-domain-controller-12.1-squeeze-amd64-xen.tar.bz2.sig gpg: Signature made Tue Jun 4 13:23:39 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 8dc434966636135ef4e368bae9d11faca0e94688 * md5sum 29156e5ea956a2f76db8078526b9ccb1 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 v1.4.10 (GNU/Linux) iQEcBAABAgAGBQJRrepTAAoJEIXCXpWhbrlNZ6AH/1uuyd+nmzcn2ueRnR16UVlo JyjKshL7mqKMDtgmsDBCaWVx667PGXdLCWtj0CJ3YDII9H2yu21ILYZDG0K8kxAA TguhUSKM9uJNKyBqX6pmJGG6gY3KpnLJlZ8TibNOIdUTka9p9f8VBH5dO/USVQ/t zyfoOvteOSp6BQZW1d96278BieqjJnsnXr0Lg+oj81+8GHUMhcyCuPn6mQRTuQ3w 5o3WM2d9keRle11qa92HDxASM4HK2xoFY8mnzSPK7Ips2IlEKSQJ3CS4OsO73rlY 8/nabM9V7YDd68+yx5RlupTBqTQw8Nj5uMEClGBJUWP13iN/yjX9DPfx9cqrzH4= =KFDw -----END PGP SIGNATURE-----