-----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-ansible-14.0-jessie-amd64.iso.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-ansible-14.0-jessie-amd64.iso 6cd967442099ca881fd9a92e83a45fd4 $ sha1sum turnkey-ansible-14.0-jessie-amd64.iso 44b4e804ab68a35173e23f3462de2ffc0244b70c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJV8YyTAAoJEIXCXpWhbrlNPOwH/3mmk3xm8/ieIcoVtr9qLpS+ 8WTU9lku0zr//ChvJDGrznRCe5Z7P06zk9aIadl+cS18X4oqg4M44I6u5RNXGVhU 1bL7i52iRSLHOTDvtNbCQFzbLWA3pLvfMZHvmETzZZUXmxvwmKsX0tHiIVVvPF/n YtqQ2Nwkv5JpUJd6bsIfzwG31mb2UBe6ETSXHwiauQn2hiUbvIAkS2XSwH6GSjX+ DJyPZwpIXrSLXLtleqX6c45+KzG1S841n/8WSBOeqM99EUjRF2CH6o4WtbY7w4ZO ou/Phjky+gP396mjZdrQ3lYZSpuSAHPkypBhTnW7d1Aq7QTtu7KNlH1WnfZVVrY= =hV4q -----END PGP SIGNATURE-----