-----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-limesurvey_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-limesurvey_14.1-1_amd64.ova 42b8ced6b5b310daae851979a860488e $ sha1sum debian-8-turnkey-limesurvey_14.1-1_amd64.ova 6b5e2f5853b13f5fa215ead895d613fbf2c2a488 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXDJnrAAoJEIXCXpWhbrlNgS4H/2Fp6W0qnHfQJ5KwkYFJbHlA xwvfWvB25CPmEw1xf5blMvF0fxK0A1ozmCZrniQC4OPmB3Urki1Yy66vvQ+HAVGD zk+iGuz9k4Kfnb1M6kXcbGiMRnGULwq+pT3xFHmi0bQFVqxO1gQfOsFBqxfVXnSR O280+553V56UiBzYli8xrM8f8lyIXsC/emFKGvLDka8jV70nbR2M3xcs5wVw0V2q FYr2tECNhc7LsbjFHJbJ1TiE/2MtCE5h6RgIOynVjeM81/7LhwTgKr1Ugz4su6v0 6ilme4F4ThOlmpBGMT4G7vbBHj5+dX6gxuDRCHEuz5nWqIm3kXoqvh4xCKQyHjY= =kBfV -----END PGP SIGNATURE-----