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-elgg-12.0-squeeze-x86-openstack.tar.gz.sig gpg: Signature made Tue Aug 21 15:35:36 UTC 2012 using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key For your convenience we also include file checksums: * sha1sum 1afdba8223585b1f1bfff57c619aa4e1f1f0fe27 * md5sum 5dc954207487e7ed7e45069dad5721a1 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) iQEcBAABAgAGBQJQM6q+AAoJEIXCXpWhbrlNobcIAIt3Nm04vEZ2eYthtGD/U8Di DBvdc3b8zUQCE1XlHsk+TaTVBBOLB7bwe7tX12ZfhLgPU+MNBEhApIXgDvZrYsnT hti6+NdN8BtBVQOhTaskHc0Irmr9FhhPTvC7uutNEgtNnej0jir2GLfSimhFjspk RGMk0huFMB2Ke5C3z1UyCEMN5rfhm0nrjbqLFh+VorXx+qkrwH/+bvmxygY2E3PI QS/Y2X8qKSiunZG/5Esq383H64qfgDi45EW9fUdsd6T8dlzYOtSex7iaQbd9FfNQ pfxDk0EMjZtPx8aPX8CaK0OnmmZ2ceOqRbfB4pCUU3fzMr+XOnu3cNnxYPOenns= =gfs5 -----END PGP SIGNATURE-----