-----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-b2evolution-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-b2evolution-14.0-jessie-amd64-openstack.tar.gz 91b13ffa87f3c8e67f0ab10e2eaf4960 $ sha1sum turnkey-b2evolution-14.0-jessie-amd64-openstack.tar.gz 7b223cdc46998a1a9ece4bba9a64f8dcafa6a5bc -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWXYG8AAoJEIXCXpWhbrlNcgkH/1GgrLAXbZKKi7NhxFDPqosd 86j/e8vOL/UCwO5zsZIctFoJ657SIDLIQnrQ7z/l/wWSiAy8TGzb//O2v4uELeeK FupxrfSr46cWoog/gAYXOH40V+xEU1X+R1rGQoQrHFZJK50p7gKsB3DerWgedC6w Dy33LstHYqYnZc2kQO8fOzdGXBWATHPAg0cryma7HxTQDs9SFTRRnKpBXJpDv3ep PQpiHy1hmtZU4vcc0TSAKSsGBklWNk71keOPm56hur2dNnx+k0jLPfuxDldxVlgC HIi6KBJjKO0XYX/CIadDXu805cRxhhcvwpvXjxv3sU0FQb2U8jl5qcagXWR4rgg= =Mnrg -----END PGP SIGNATURE-----