-----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-silverstripe-14.0-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-silverstripe-14.0-jessie-amd64-openstack.tar.gz 73f17b15cd4d1ac344bf6ed09a3a8943 $ sha1sum turnkey-silverstripe-14.0-jessie-amd64-openstack.tar.gz 80a2e18a30a054ca503383e1cc8b5d043d21e2e6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG/AAoJEIXCXpWhbrlNf4gIANC7eOVff/KrXpLsx71j03hg YU//isOZWpLw/HkLLbjn5osyDI0b3hPwJ/5z8m6I2m6XzpHxQk0ibYlZ7VnDkojS DujeJuMvPX1NrMNy/9ICue4/eq4gS+jGWY4TH05IGKeEzH5FMo54jbCWEQhzMDYW ZQh0/zOchXLXVkYK4TH9wtPC5B+PMN7eGhO3fQ+omPEWaZEstB9ldPNuAhy0AHmO gGh40Y6PpdecnsPCJQyN5LUy+VXoTFr/tKSAvH+yWEjwTf10iuowkSu2/vYooLLg hXClS1NPrZWWVcmbsEuXZ2kRxD+XHO7TkYWsgrbk0hKyJW2t3JWXQqaBIqE/yjA= =y2qE -----END PGP SIGNATURE-----