-----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-redmine-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-redmine-14.1-jessie-amd64-openstack.tar.gz e5b8b2698fbd1881de942698670eb545 $ sha1sum turnkey-redmine-14.1-jessie-amd64-openstack.tar.gz 8c8570602661377789ac1139944e9b77736767cb -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn5AAoJEIXCXpWhbrlNCx8IAI0WZFRpb8IzTnUsaJ909oli o3ia0H6zOhmpLp0UdggS3BhWf7eOE1gus05rQ6dLC9YoyG+yE25buEqnL3Zn07Rs +T1lKCAtFAeJNshECuF7dvXDKp5r7kO//6CILYlEWjtlS3Yx/dLqLZeGGkXj32N5 t6xYl2O/jwFCsUHpLEhGj3y79sfJ5nCddhVkq0tCuu+ofXXdMkmfy2QuVIF3S7ok WCnwYQlGaC3C9SEq2S11e8G2KyZ4hLcFuXKtOpycP/9xcuYn9bD6XpID2NWaaTIy EWsmistPe6Gd77W+YgE/e7yXtqJce/+BfNhzhrM1YeUl3VnA0NmU+rdAWXk1l1Y= =EzpC -----END PGP SIGNATURE-----