-----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-espocrm-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-espocrm-14.1-jessie-amd64-openstack.tar.gz a6897c08cfef8b31830b2406fd6731c2 $ sha1sum turnkey-espocrm-14.1-jessie-amd64-openstack.tar.gz 7f2dbbc827554033d2c18f35a9680bfd682455d8 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnyAAoJEIXCXpWhbrlNgSEH/i9efhLNnN1DHQvpecv95Zr4 fY85oIzkg2GfkC6ag6We1zuqx0N86fWm140QVO6qL5xjE6h8kJ7k4WqGK0aiLG45 kn1hhPHlCVUujwFkYCr0TD21k8iheyEbWU37nAKO0EFpROkk1Us/vIB3qD2bcJUH /Qt4rbKRxkY+9sU1Ug6xoMxi/nnU7TiKHLmWh4ZD3NxLxS0C32PgfdM5iW6E+19M LLg/IckcsEkwRKjxdMPCwO4vXEoGkMjQ0siGLfqWQOnBMQKOu/xhmQ3KojGqkTt3 nmMypxf5LpcnpbgWf7XBW9i4IbbsfJoNltvbbSFCrhbbQHoyaL3UX8MGftOJOkw= =JpoS -----END PGP SIGNATURE-----