-----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-mediaserver-14.1-jessie-i386.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-mediaserver-14.1-jessie-i386.iso 7e82bb5d088d10095663afff149a8f58 $ sha1sum turnkey-mediaserver-14.1-jessie-i386.iso 5b4c35931d6328533d69768af0e4b8efd258ef3c -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPyAAoJEIXCXpWhbrlNiwAH/Rij3FHO1piIJpKwzneybidw q9MWXgS+HXw9owR8tTiwdKYtUnMbDCq3Ddi84lJVQZtNLRXZ8xoBcISHl4kB0d6P unqtSzrCupyTbOe6oeu8ZEUKYpQdiX1vhfQ5OC9LYm3qmXAuchZSImmP3UJ8ZO64 qQNqoguROYckJQ9cjWVk8iLRYVC8E9aiY4N9Kn1m5SsMsElHrklI/l59Lgc8sk5+ pL77SXl5un0sHNN3zqAuL1LdJ+u+gOKSc1kyM8wLT2jB8lqNTh2YhYV9i+yAK9kG tamWUiK5wmrTiNRXOoFSowyFxQE7ONkMFXJWtmCMFHu316E6YtuH4/WywvdlijI= =HmZM -----END PGP SIGNATURE-----