-----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-fileserver-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-fileserver-14.0-jessie-amd64-openstack.tar.gz 6115a5cf307df16264b2d27a8d3b1a39 $ sha1sum turnkey-fileserver-14.0-jessie-amd64-openstack.tar.gz d9b78885df92d3eb695245a2fc05634d18e4a81a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG9AAoJEIXCXpWhbrlNYXgIALnCjAg2G0GheVGuoOhEOH6K dhm3uzl/o6VpFbGhkoP/ih9z5ZOSTk9+UjOx8KKvCjicQnpXmmzQbm7z7Ml57XsM 4ZYTYz5oRYZZ1FUS3I0l6IZnllSYUeWESIsnw9MRoXmeCLKWZJjMxxrPXqPsnQ48 ORyk/wlnwqxZTn3zZSERipZvKnhV+0X2z3quYZeTKupJtYhBBf8FSaS6xCZk7Epd ycFL8vkBXZUeadgpX3JqzHHnearwj0hmLpUMUrZbQzYNS8kHewVuV2JZJB3tau3F FDCLQ0Xp4P8ojBWbo3zp4xW4cfPSiHIJUljoYosUx+BmKRnq0kDxnLnJ9z2Wm0w= =mJX3 -----END PGP SIGNATURE-----