-----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-vmdk.zip.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-vmdk.zip a83c1e7b45aa51e9907ecc655d64f6ed $ sha1sum turnkey-moodle-14.0-jessie-amd64-vmdk.zip 33cd1fcbe3c269046638d85f140a2073f2dfa73d -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdXAAoJEIXCXpWhbrlNibUH+gKmvb4H1AMnTrXjlF9yt9yC yeR4cJpE387YDrNA4oh6ZjsQRuJWPh+9sFA0OGHOemsKnhkFcqxeTRkyU6PjzRBZ GEAckrkZIZfRC6FYL2Qg/NveoNZzz1x8UfOtDlN+jui09XAtchlt9K0O3ThLW3Kv k3zf376zMiExamo34Fb7f6S9QKupDKqN5kj97Xz/+pQkbO3Hq9C9PQcCQ4vI9sg7 ZfBtVZxETzg3LfNRgZbMhTH7oirwUCQ1PdEomwdTsk91au5aLD9fDje0JDrI91dU hhemIfAYXulWBazO3E2uJL/cn4aB547D+u/9dmgHbysPF62cYyvzeHbH74nPZqY= =ReFf -----END PGP SIGNATURE-----