-----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-twiki-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-twiki-14.0-jessie-amd64-openstack.tar.gz 45c827e8e41e98ceed094a381d701a7e $ sha1sum turnkey-twiki-14.0-jessie-amd64-openstack.tar.gz cccd8421782c5b8dde44c84c27062e6e55827147 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG/AAoJEIXCXpWhbrlN7kQH/i9yLjxAfOBdxX+5V8SQjQk5 NRK5mnT38GL/WkcaNgndjYjpHpB+peqZRyXn5+5KoGvb6KrxrWbhZMFMgnTc56I9 rh7bq0ipJHKvl8bkCuptrV0OT9nYJmBG1yv1mzwO4KFosCI6Y1jH7zHbGwsdec4V vkGGmmCHAQaHtdIqhuqGF78gf6BUKInQeu12W3nrJeoEmNOBeUPpgI5DqoqtVhh8 /g4RXGSdKLTvFcqhaXUI0gG5ktIvuETrOZlIZu9oM7xwJa0i7U2DaSKwJWJ2cLX8 5lX5x8/BSyLAYhRQl3VefFM942qQ0B7Uvfmq4iN1R97OauGCbTIYMXcVnyyoLtA= =d9L2 -----END PGP SIGNATURE-----