-----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-phreebooks-14.1-jessie-amd64-vmdk.zip.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-phreebooks-14.1-jessie-amd64-vmdk.zip 88c0e61af1be3b0259dbdc76ab0a7f8a $ sha1sum turnkey-phreebooks-14.1-jessie-amd64-vmdk.zip c05badb5e9bc129c5cbd7d8659be542baf294d06 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlNyAYIANl54K5frz3yGVAJ0NvsUQ4p AQsI2WovlgY3cHvuLqkcmO0YFtQHhhmLQ4VWNJHsgQpSqvcl9zKpSRJpPMmH9fSa SgHmHqDvnNwiSqUstXQ/iXEzLJrZvJeROnPJvG5UqOMr97z19IFaNIa2PXgkNV5B GQ20/GkEKkVeoW+PQ2H5jwehQyU1I7SIvafLcZn7BpbSQ+ANLf6CzJT4iPp9Jw2D djfA6vqMvtO+1+q7vX3EmBYD8eYg4SWxJt3nrwcsLyeqmfyFrVLO3LM+6TeZ6x4J rlZkdP8BymIOblxYCSzC2aser2nuUvjuVLqpCfbSx8tF4WwhvcNpXtKdGlXwnUc= =lQOR -----END PGP SIGNATURE-----