-----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-phpbb_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-phpbb_14.1-1_amd64.ova fcdb490b211172fb75c5050bc533cb9f $ sha1sum debian-8-turnkey-phpbb_14.1-1_amd64.ova 51bb56159cb90550ba2a4977e1ae8eddfa7fd56a -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJntAAoJEIXCXpWhbrlNg04IAMcxI3lVHzqUBaoJhrdUYN/L 3YhHtl1K8cIZaVHY2FZjRGE2JrTOQCWwwOQbnTNB0jtsS9mlOJ+eSIN7axXcU12a sDZftvnTkgRU4G+EmdnpvD9Koo9qLo7mWpDhaTnnnnBBGT/BgFBZ+TGgQEsCr8h0 VWyK1V07DekEjLGNQy1uTg4SEzfNh4pF3p4ET2rpLnU4SJnCmCzDKrhj5B622Yun SddvP7KlULKLQDDY9KxEUFdWe96eDNXdm1dmn6Dgn954RKA6ib71U2wePmBVkzPO F3LSTVEJcfuU2+MpNQA9eUZFeKcrqVRb5IYGTa8RauoY76KnX8MvNz8VCB/6/kM= =7Vuf -----END PGP SIGNATURE-----