-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Two steps are required to cryptographically verify image integrity. 1. By verifying the integrity of this signature file, you can be sure that the checksums included in this file are valid. $ gpg --keyserver hkp://pool.sks-keyservers.net --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-14.1-jessie-amd64-openstack.tar.gz.sig gpg: Good signature from "Turnkey Linux Release Key" 2. By calculating the image checksum and validating the hashed value is the same as listed below, you can be sure the image was not corrupted in transit or tampered with. $ md5sum turnkey-elgg-14.1-jessie-amd64-openstack.tar.gz bd582eda4735ce5c7d750ec5bfca142a $ sha1sum turnkey-elgg-14.1-jessie-amd64-openstack.tar.gz 8d78b80a29734acab69bac92ce70c2a1a644e43f -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnyAAoJEIXCXpWhbrlNWb8H/A7+PGsHIJTke7MY+t/7xnUZ KTudw8QfyGfRaGHzrEL1HJwpWI74ZVdWRCXkCxXgSw5SsU7Rll44aXjlZGg9auJ0 seYyb2ZNYk5Hni4nnuv5xKqm5fY85Xk01AneNzWRLtBo703X2bQhIO27Z6g2jHvS j8bvUAyA0Mi3QzOlnsUeFwL1iepyewNJ+e9sRb/DoKNmYRVHfQnCBG8shAGzn6Vd /1MTj+MxlmDaEc2WZ4jNM8OM1eF/GJithDm4Iy7WvpXPaRowNaCPk/BWgDHkGIVo ucYlJC9Tm8KgtB2fASj57G0TJOBtHLAu6JgrR6Mw3S6e0MDP+OgIvIN2KC2hurI= =gQtz -----END PGP SIGNATURE-----