-----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 debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz.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 debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz 987dfe9120badd87489845d6bb7c76761795ad4ada20c1c352505271f034a21c debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz $ sha512sum debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz cc4475be44a1991381a614dc5c00978c1973a8c895095eb1d0191d404c9c7d28f0edad4ec1fd842c6e881b6ebb791b3933e18908da9412754a7deed5371134ce debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz.hash debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz: OK $ sha512sum -c debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz.hash debian-8-turnkey-fileserver_14.2-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZeIKjAAoJEIXCXpWhbrlNfEYIAOTo331rZ+zbFIHAiQj7kdjd bJSFBoYcUJOjEWig9V/JSvi2PncvpS9GKbouRO6s0tOcw3MNcPfzmmGJ98wGv53a qOwrCQjA3PXNLTw4ehoPxVIVkjV6M68X8iZaISSfGs1MiT2P4BoBUgNFJC4PPSFc UWxfSnTIC67prkQ8IVFESV06tCbAxARsJ9C3yuEcccS/l29TQUUyM6v4XVeUAvPC DrLycSOfgXo+WksfWiRrP8010CKtySaJzP+jRXNpLNrZTUZr4lIoGzP0SsDMwnxT SkT1PO7rybHZZEg/J86Llb6htTtxEhjyqzgy/87Vh0IeG2oCBHrgxvb+glrKn08= =Ju5s -----END PGP SIGNATURE-----