-----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-domain-controller-14.0-jessie-amd64.ova.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-domain-controller-14.0-jessie-amd64.ova e516f6336bcb2f657ff98aa8e352e59c $ sha1sum turnkey-domain-controller-14.0-jessie-amd64.ova 8615382af296b3d0022ee05bfddf233455e1e632 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMJdVAAoJEIXCXpWhbrlNLe4H/01wV+r4XDEg+Gt/DshUBxZM 583zB969lthMjy77ex1moTQphw50HjTjftKAcWptBiCE4/dLYQnLAJpLzs3JjIp0 Q8hYgqbzAz0SMJPpt1h/6+Da+3MBHeMxKn/7qt8OdDwcD6QH5WB8qFtwCSD73LPU zKkS0u4/Gf9gKHhtKz7OeP7yTpFqE2I1MImu6zIKP+FsK3SBd5enwE7Bi2QbtdKZ 0451UjBkrhwSzgRFzF6B0heaEBaL3lDYeFn3ws60UjwzX5JERf94ZmPpHS8iYKbD Lz0kipK7W8/u3utZA69B6GaQZ/meaMVcHzm6V6rpGtO0mx5uiiGzfTLh2uU1KLs= =Sk8g -----END PGP SIGNATURE-----