-----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-mumble-14.3-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-mumble-14.3-jessie-amd64.iso fb51df510714213f161995e5e7b73035a771a7c036cbf75691f4838447a9976c turnkey-mumble-14.3-jessie-amd64.iso $ sha512sum turnkey-mumble-14.3-jessie-amd64.iso 5b113e30a04568cdef8d6d60b0621fd2cea3c8f8d965e064606e3bc42be68c60c1120eb05f025cb0d627b8e530abc9b2cc98be08a6f9ebcba818675879d27fcc turnkey-mumble-14.3-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-mumble-14.3-jessie-amd64.iso.hash turnkey-mumble-14.3-jessie-amd64.iso: OK $ sha512sum -c turnkey-mumble-14.3-jessie-amd64.iso.hash turnkey-mumble-14.3-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlpl398ACgkQhcJelaFu uU04bwf/QgmUne8fxFIXBEBs72TrtZBoUuXq6xIAiSah12WJ64aYT7n1eRlrpEvA OCsRUt6Q9va4OmM58aIU09elC4iKZOt28CB1rLAL/C6EZ75t2TKOv85+xSUgLr7f /Sq+kWfnweTEFAkt/EsKwJX0hEye3D9lxCFQ+UIpZ6Gw8SbVLl00yLF1i7o3FW7B La8sjI3YxvhL82YXRjOo+0ccU17cbpHiH1ozq3jurhijVMf7rkA4zomLMSC0k1tr E3JjXxLnsD3j2FEz/FIWSa7MppHxJurZUU9A9VZYH9cX0oESHQI5zdivfLt5EG2/ /7CuEXYLVimbv6HWTuFVXQyWP/AXeQ== =LuPT -----END PGP SIGNATURE-----