-----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-lxc-14.1-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-lxc-14.1-jessie-amd64.iso 56db61cb73f3730593bdf235679426bf $ sha1sum turnkey-lxc-14.1-jessie-amd64.iso 88a71d79b215c5c6bb3441608b465e0fcebedd08 -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.12 (GNU/Linux) iQEcBAEBAgAGBQJXCkPyAAoJEIXCXpWhbrlNkvoH/1RTLwXeuP3iihy4rHAntpEF uT3Zjnf/nL0ZRk13pEkVaCC3FoJD6Vq5HLnrehu/ya/PoKlkjdoyqHhG/fEnhhVn PUXGTpb/pwKv7KGfjFUch4OSUdmYrbiI3raYVgm4oerHeecRD4UfvOmZ5i+tqaj+ xOZsNyktiNPWuAQD0aOoeMb4wNGwPDNM8HTySot9mujo+Ok6DrGK3T2k+bf7ttCX /UIZ59vC/mi85byOH6mfx7kD+zkxsER3zvLiABqP3ERjrBhN7WntRMr/APhodnHM G15acY9SQ9/G4ueuyp6GmjjI2o0DkEFtGh23/T4+dQMWOimi0Tw38Nqc7p5Ioyc= =kEQN -----END PGP SIGNATURE-----