-----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-9-turnkey-core_15.0rc1-1_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-9-turnkey-core_15.0rc1-1_amd64.tar.gz 8e0d6625ab02303550804334b5b35132d01b714f2946f506803ad93b0f58c799 debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz 66409c48f59d6603aaa487dbbc80e44c0d1cbe26ee3326d54d8f8577c9de3546cd6146cbc8104bbb78d48b2a4720a42431daf4963437e8213a2259037a3ce5d2 debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz.hash debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz.hash debian-9-turnkey-core_15.0rc1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluM+9MACgkQhcJelaFu uU2sAgf/SAplKEUJ1X1DND0zVZuE22TEpArzjnXbCh3knS5vURhXEWZeami6tnHV xNiO314NPgKLtvmVDLkT7dQLtz2Lv+OY9hRXqRNNBPFRlpOMAJH5hDP/AakAt0iw 26lk5vQrxezACBsn98TUnuxGxl29lonXB5MOs0kOT3CqScmjQ0pumevm46Yxv/81 fOy3UCOaXopjnSNoVNK22uHnV/MafmR8jlfytTGe/7r0sREGjU9T7LPPoUBf6Z+z c4E5U5ADMFj1DLIPtRxcGs69q3QLYX/YTw2qFoZIgqv6AW+aTKux02PPwqGsbYD7 Dy+WjeY8hZ2zlwKE+frHfNahkbUe3A== =zuDn -----END PGP SIGNATURE-----