-----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-piwik-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-piwik-14.1-jessie-amd64.ova 8bbfcec60de300bba55b5939cd6b6034 $ sha1sum turnkey-piwik-14.1-jessie-amd64.ova ac49d9eaad6dc22d4bec438623f90f6778dcb412 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNLngH/1nCiBGDInUa6MKGJBzv1U74 yawgxLzAdNGim4+a1KIcQkRgunobeQTLXywsccxU9zukJqtNjHDCBBQQ3yCfevHm fE0Mh9+eO9fL3Tjz9iJO4Wvmk9nPP/90l0m80YtEdoZkVwaAeqXoJP1D/vD9idPV mNa+VDP2TmFSeLtsuEZ5PXF5Fx9p9C6T0uCHLaKZv5o/AfOn/2Ase8dAIwJvL7v/ Dtvy/0hN5/3kI4VUtLtpbVKlpgPTSiwyzDzknbjeL5bK4BkletXN+0Hr+ovE8cv6 Y58W1ORMaMQZehXvnraIF/zM5BVYnUAggCHe+0V77+NMg2NsuJODagcNzIoFZ7Y= =Oi5+ -----END PGP SIGNATURE-----