-----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 debian-8-turnkey-fileserver_14.1-1_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 debian-8-turnkey-fileserver_14.1-1_amd64.ova 4ededb5f9ee99882a9f808d48aa77e4d $ sha1sum debian-8-turnkey-fileserver_14.1-1_amd64.ova d008eed4589187be34d98869407c3528cfa51bc7 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnqAAoJEIXCXpWhbrlNWXQH/jwXoP9QK0BBdFf0qWPolJx3 ZfW/hkfZ/viQ7O8ty7UfXS8y7IHM4s4D90Cp6octtyhheJVFpQPCjOzY2PBZFzBa IwFnbvj5EtATKSe1XOftCl1q33CauPf6QDRpDwhUOdBz0GNcy+9umcvu/O0Ng3Z9 JVpsHqzovpBHF7mJUARzo9bPbDwIHuFLBJwqffi3oXLc3ZiIftD6ciI+J+2yvBRt /xgX+sRjLYI2wiD5ccN+ieeuEBq7TywtyR9cs64cDNBHIzjpXR/WUN1Zsww1GVR+ Z8DjhvdD2uihktjXES+36GdFG+FCer4n639YTs1kWiC3TrOIAdOnEGmeuVDcLYw= =AqK8 -----END PGP SIGNATURE-----