-----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-postgresql-14.1-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-postgresql-14.1-jessie-amd64-openstack.tar.gz 26838527a6740c7aca02d37233653991 $ sha1sum turnkey-postgresql-14.1-jessie-amd64-openstack.tar.gz eb7d2a0a295409d3537dfe5a0a4fb7dc30975f5c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn4AAoJEIXCXpWhbrlN1qsIAKmC/VA8h6ZEyREejbziEp2d cd0lQW8ixthvJ/tbNfUj0JGP4z3ewkGWc86vAnYh5bjEKyMXc02YTni5g03N4UOM o0I/z55J1aVRxXLo326uL9a780OdZ/Ky1yzNEnWKcsNMUn8KBxMIbVuONkwM1hem pik7Vw8eeBFesmWB50V9RKcCQyXnOYZa8ZoiwwS0ZMcOQ0/ot8lLTIhDiRojhPSN GHL+Vp+a6JPvlvSxQxtbalP7pwzE981EJNnb1dmY16o4z5D3AWGwwR4HNusISFsf rcPAMqFZVPnP7X3VjvfAMMAzS5UGt8ok6sTbWufK9xm7MVDu9D8YeEEBcdl0t5E= =auq+ -----END PGP SIGNATURE-----