-----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 debian-8-turnkey-moodle_14.1-1_amd64.ova.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 debian-8-turnkey-moodle_14.1-1_amd64.ova b547d0ef5c7d52854d71ccafd9e71342 $ sha1sum debian-8-turnkey-moodle_14.1-1_amd64.ova 7074b2f9fc9faba1abdf19b4dbd07c0da390ecb6 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnsAAoJEIXCXpWhbrlNGbIH/2dZ75HYzi3n8S4t0iTK8NLu RkqYYLdYVpl0tlLL3XMYm5+7JoMCzQWFDYpl+MiWxzpGxPIeURyGf+xOdiJQ4P8h PpDW3DD04GAAj7Ybbzmtidg8VXmWqH8P5mvo5AtvzJH/W5BmvdAPBHQiJ3cFGH2v ZWfifLQ7dPD7wg3ezqfQkr8q4zIgMQGaGHVVigzC0/bTOTOT82+HHfzo3I/FT1CD on4klYAsEAcBE58OzJAZAkCkXe1o504nAMnzySddJlfroMiwTh1UGQKMZao4DqrV vTzGhzjR+E98d+r343clNBFOCbssZcDpMu+KI9+3w1zI7ChcilH8G7Ngg6Zawzo= =3y8M -----END PGP SIGNATURE-----