-----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-trac-14.1-jessie-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 turnkey-trac-14.1-jessie-amd64.ova 3b4719aae963adddad45771fcb547cb5 $ sha1sum turnkey-trac-14.1-jessie-amd64.ova cef3f30fef0b861ee4e91c97e50ec1b869a9b11c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn7AAoJEIXCXpWhbrlN7MEIAOE6xgxrb8b8+rANaVsxFXJs v3ZgqTVKy+lEZez+kmnXYqI556VSe9uR0Fw5wwEa5eCY0SIHUFnBHHq4N6rCeOIl Wr9qixM7sKE5g+RDq2JLGNPCLo61zfW+ZXQwHhHdDJk9IGxT0y3O6PkBeycSYm6F PfgCn2Hb8j+u+uyIZ1oVtt4fOnWXWsjHH5oGZpX6CodbKz7VMMuDO1SlESN0F3Rq wACLwll6Tfc7C3oyYEiKlKpEqHITUrMU6ba3xY1vlyQhbKUgK2u7gbNkVk+AfgOA VYFCoI7p1/u3gF5mF0EWfr9h5PcYW/eKMwf6y5adwVPtsOztcqjMbIIObfy/Igk= =Gdaa -----END PGP SIGNATURE-----