-----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-typo3_15.1-1_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-typo3_15.1-1_amd64.tar.gz 2cb8f28992052358c0d3e3061787f0712befe02e89c7382c70e025bded227128 debian-9-turnkey-typo3_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-typo3_15.1-1_amd64.tar.gz 24d0127234b581cf09528a10c62b0af2f8358957efa61e6d3821c7395f1544e20a974038ed71107aa1a6daff18d6d4cc9143e8ddb5be518960f740f10e416793 debian-9-turnkey-typo3_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-typo3_15.1-1_amd64.tar.gz.hash debian-9-turnkey-typo3_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-typo3_15.1-1_amd64.tar.gz.hash debian-9-turnkey-typo3_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phQACgkQhcJelaFu uU0O6wgAg9mAxzBphGmSEhHpE1SPJAy26yMokFtIqAsojZyGbgrrc8ezIZNbpbek 5C3cV9TwNn7Rl4AdR80cG5iDUAq0HfNccxigE8OzC+Y4HL+GvA6bNbExlOmJWBve +Qzn2ZGMwpf7oAOCI5BqF+NlI0aN1Wfjnwp+ZoySGc/iHZpTJP2ACzRG3z6p+HO9 QXn9PBRalqsB/PqEOHhDC2PBTFscnR/7bZjNiITyqvKU7bXFG6MUh8lo9IZmf2My esXqJtDW2iuT1NvlvZjBuA/+bYfkHdq3tsPim11XTTqne+Rypg3Q1zfvuyp+caVb z8OYDccucwDg/ggoFd5WMPTfdA+Eng== =oNbA -----END PGP SIGNATURE-----