-----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-yiiframework-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-yiiframework-14.1-jessie-amd64-openstack.tar.gz bcb6d13d87243b128309c3fff46ad6a3 $ sha1sum turnkey-yiiframework-14.1-jessie-amd64-openstack.tar.gz bb961ec0dd84a0886708f93ae8e70e70c7baf91e -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJn9AAoJEIXCXpWhbrlN0IEH/RbaEfQPhcSk1WT8r2SqWEZU s1on6I04XEJKVB85Owe8z3ICSENxcQJnTWbgbQsRETZE9PZJP3s+csU+kluF9l60 IDcPfGOj2OdS4V00calzjRcrmpwcXRkwWx0WG4qYqslL4+WbzoIuZk1vb5cZZYM+ 6Kt9Vk6ANziPg2OuZ5GtJEsSoMAhMDQYeJjGezv02EtOkaHCmXfC1kId8sAuqcvA Iy85REYNacs0HySB1S1ON1EtJvxmUuWuR6VHGhz9Tr2tME3vIoxopOHNsWgMYBXq WzXh3WUT3In29O3YwC7RoE/sQzOhx1TWFuqWwEJMPJu8BpGDP11sjaEJ7/ezNeQ= =WkT/ -----END PGP SIGNATURE-----