-----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-canvas-14.0-jessie-amd64-xen.tar.bz2.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-canvas-14.0-jessie-amd64-xen.tar.bz2 7feda41c5cf47677e85fa05c5544614f $ sha1sum turnkey-canvas-14.0-jessie-amd64-xen.tar.bz2 43671b0dff64a5e5e8fe8ef1c891732a848cdac5 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJWMdiAAAoJEIXCXpWhbrlNEHYIANWkCPVVLGm6tPyyQJ2bx6HF b21yZ+7ur/b1EIrKcSBKNsXR0dNG2NiAYDlUp3dmkQ3fQxGr6lDAf4eQGLUEa/u2 DlchkJph+DuXolvc7a4AYX0N88G1HfRvhzwBFt63R9Gz00drXKO0KS/6XC28pHaZ h+fwvgi8ci2wjFHF84lfvSt5piZvHhT5l/K6F4vMFAQxNgCsFp7vXzoqhXvp06EH jggzr1nhAYwo/W74DMCGi3e90/EI1KT079YHIK4M8aP3oOynjMIg2P03lkb+k4qN Csvt4WOpjSrHNjzpf/Eaq4EFLNzZolpyp+3s6Vy8kryjOEKKlT72/7d+ctQdBfU= =Fk+O -----END PGP SIGNATURE-----