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-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 16:28:54 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 4e98b02b53701be46ce80fda1bd970730dbc677f * md5sum d4bd23e30b4ebde84f3d3c3046673c99 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) iQEcBAABAgAGBQJQM7c7AAoJEIXCXpWhbrlNylgIAJIggFmtUNtLZIEaAtemAiTJ Yl4IVJUx5b8c6wyQzwN5AGsZ5xMB7a+K05U1DEjAq11+hat0E+qERoTZTMbtqMt8 nB7KT4W3Gt2+/4VKHLqgMjESnzBRIj1uAK9wxb3XRZJSCsLf91noXw5o5S0DLOk/ +i8KZGBFybJuSNkIGNnxb8HAMO42k6gdNWqLIVefaXUBfxaJHN9wpefyqeK5axpy vH8xwZD2l0qLibZANpKgsm2FlVvXbw2DLqUs16ojrZk7BI67/6+hJHJEM5vNkpKN WjI4L6WTuuR63vPMT9+OMk4Va0fXebUanb99G0SRTwZ206xLq/Zm5/uDDNzyzl8= =c6+f -----END PGP SIGNATURE-----