-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA256 To ensure the image has not been corrupted in transmit or tampered with, perform the following two steps to cryptographically verify image integrity: 1. Verify the authenticity of this file by checking that it is signed with our GPG release key: $ curl https://keybase.io/turnkeylinux/pgp_keys.asc | gpg --import $ gpg --list-keys --with-fingerprint release@turnkeylinux.com pub 2048R/A16EB94D 2008-08-15 [expires: 2023-08-12] Key fingerprint = 694C FF26 795A 29BA E07B 4EB5 85C2 5E95 A16E B94D uid Turnkey Linux Release Key $ gpg --verify turnkey-owncloud-14.2-jessie-amd64.iso.hash gpg: Signature made using RSA key ID A16EB94D gpg: Good signature from "Turnkey Linux Release Key " For extra credit you can validate the key's authenticity at: https://keybase.io/turnkeylinux 2. Recalculate the image hash and make sure it matches your choice of hash below. $ sha256sum turnkey-owncloud-14.2-jessie-amd64.iso bab3bbcaf37f9419d0c5f4d3680a1eea655d4f1fd6de68d8133d8ccd2f62a163 turnkey-owncloud-14.2-jessie-amd64.iso $ sha512sum turnkey-owncloud-14.2-jessie-amd64.iso da69a46106aaee6dd621104800b0b4f16f8867bb8065d0037970f8e763f1c50d7aaf15563f16b1455c52c8045f8e36fb8f2e7b6f711929b9e42e9e861eba3914 turnkey-owncloud-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-owncloud-14.2-jessie-amd64.iso.hash turnkey-owncloud-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-owncloud-14.2-jessie-amd64.iso.hash turnkey-owncloud-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZeIKlAAoJEIXCXpWhbrlN9zIIAMurDeyifOPcRef8Fb52jE+W jJtxDImEJD8B8SocCcSPeT1uLz60wf+fXP34tULo7co5BtDVjBzBL3cge3U6rm5n C7hctuxqBV2n/jI0gRQsakqvulfE2zsmsyNlCbiaxrcqPV+3xWmzHHpQdNe0qpqi GtlIb6qw0moLrCMbTO++mXUc8rMx59IhUx8ytsMcFOITAJb3ZOeqy5/gcswxuGBE kljepo9+jxLluq2r+m5Kux902Ee7j0/y9TF5IFT7OzpKlfWGaxSLQuyvIthNqFjy 5dNAiesW4EBOpcpm3fTs8qTV7d2bvDbBXzlc1aTx+MZfQ8M6BgyZtTeNz8NVbKY= =aLzi -----END PGP SIGNATURE-----