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-trac-13.0-wheezy-i386-openstack.tar.gz.sig gpg: Signature made Tue Oct 15 20:09:12 UTC 2013 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key" For your convenience we also include file checksums: * sha1sum 159b4fa898db9b8f08f34f447eab63b886e330eb * md5sum cbc03566f4c0d1c72167f8f91f3edd15 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) iQEcBAABAgAGBQJSXaDgAAoJEIXCXpWhbrlNaJwH/0qQgEhknDLBEBn+w4f0alHe hFIG4/0Vlt6xt+La5dl6LJzm1+XNX2GObGdAbQtJSF29Hv31k33+uM+q4bsP6yX0 dkIdMyoJYt5gnIY/ChSFqsQIqo4hXdu3UKtlw2kdhvclmXZ179fUyeO32E8JButq W1yZsjYm1Td2sU/y3/ulA7rKIB2VRYJVxr3d+vWx8h33mf1YlArSbpGCvWHPrCXf sddso4iHLILI1mlWOyzrBJ4Yt6eeRIvAZb71CKarEIhEjnL30u0gg32Y4fhNGYku yXv+NdpNQM8wo82JKQRk8oiVi+xwPHxivbm0ygbS0ukj03A7iAD4EQnhegSVrzo= =BxsW -----END PGP SIGNATURE-----