-----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-moodle-14.0-jessie-amd64-xen.tar.bz2.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-moodle-14.0-jessie-amd64-xen.tar.bz2 c9ec72fdf05df68888f175cae5721412 $ sha1sum turnkey-moodle-14.0-jessie-amd64-xen.tar.bz2 eaa6417f9c2f7e012025fa22154016ba372d0ad8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiBAAoJEIXCXpWhbrlNs2oIANvNZe4r/pa+LtOgQ0+O1Fir wyR1cKdtgRlX+VWhQrp6bQpQ2rtVEB7NHN1PwmfQUh5X/oJlOzZIz8CqH7oFfZ0L 35IF2g/SOwO5dJOc9z86bysH953Wcdw0tWTOtDKgPjmm/aoqxySlGdQkvGBNjJis o/GjsiVUA4lAJ5VkzELm+rsJR+uduf6/jYaDR2UEZfOiWe6WkPxwHRLMUKGG535b CVh32+QUAhltnw34oCaoPB2oQfsYD8vAq83Sm+uw6xYMR3HqbujnMU97e2Nq0dLr 1lMpnKtbTHzfF50Oj0k7sLa+8rKHJvMtgYD3X0IqcU7BDiE5cOG7uX7UuJEujZg= =cldT -----END PGP SIGNATURE-----