-----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-vtiger-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-vtiger-14.0-jessie-amd64-openstack.tar.gz 6009221690373f1ff17eb0956413f0f5 $ sha1sum turnkey-vtiger-14.0-jessie-amd64-openstack.tar.gz 4cf77402eddf0c462b0fa0b75b2397ae290753ea -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG/AAoJEIXCXpWhbrlNUgsIAMh61LbGm98VyutlMPqRLwn/ TWLAg+LjUd3Gc5R91mXFGFNEJalQBS1JIWvY1xIcdYdxk64WQQL+cuUT7olD/abC odNFibdl1S0p1r1LUigcFm0+NvwnTmabW/TFyG7mIf8gF7yoegwFYKE5dnYTMaan a9tCqcyh6Czy8RU8UT4V3z2CIr0UGOOYWrzCQDceQQsnV/tHxG4OSFEMoe+GbSJ4 0rEA/BMRqOTjwtZkb78ZQa91aq1/6E7i68wks/pYZkxwdjvkFHbH8gAd6kGcbeGA wpqKCo0bS+M18viosp+NpXuPVVQ2Bl0T5353wvuUu+tlQrIPmUcNktQ7BiZDcgE= =jKg6 -----END PGP SIGNATURE-----