-----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-tomatocart-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-tomatocart-14.0-jessie-amd64-openstack.tar.gz 00dd01b72940c85c53170cbcf4bbb011 $ sha1sum turnkey-tomatocart-14.0-jessie-amd64-openstack.tar.gz 809df30fe98a9b6e11f03ca57b7b1a3df67a1719 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG/AAoJEIXCXpWhbrlNnEEIANR2MkMrJ2XZK1tSVe/qEZX3 WkJwuSRYWtQzzu9hZucNS4hSz4QlqltEHzt/TU/2Od+kGsXszrm3jdQqZJ5YTwmC LF5QgeSY04/Srs4hbi1TnSnAB7Rw8KbZw8Gl3ViPCPW3B07kSLHzdqUMwGdkKlVN 8E5W0qDS5WariGtWPKX+zJLEmXPcoIVxOlKhlR+SBIE7l9xQvn86rF5UlgysNe8j LccYoy0T0kZCvB3drYDZLIJqQMe0Nivt4fHEjgukyUl4kodnHjUmG+NWG38Kk0xv BTZof1+1+fkxtCcV8UYY916fK0yd/jphw0JTO9UopGTqYhftiJ1LjBNTYaSQ+xU= =p+Ww -----END PGP SIGNATURE-----