-----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-espocrm_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-espocrm_15.1-1_amd64.tar.gz e5ce36ca9fe0539a78824368dd5e12d9c2026c5478487c546f3a1615ee3b9c5e debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz 94317a82695c96a9783f14b22f1522cdf6c99e3892a8e9bb67502e1406a95856163175fa4caf78da6feecc63e6997ebecf6187eadc2801f53d75e20fbd76152a debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz.hash debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz.hash debian-9-turnkey-espocrm_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITOkACgkQhcJelaFu uU3Rxwf/c9JmD4VezM6Hp91YABV3ec30fVHCDeDziNgLO2ES6TUmnBEZi2T5TZ3n KqCpiZz4skg3rzNIpL/i/0jhVybEJH+Kr24U1NLN8zRW+Y+dbPNDTCZre1jSIjpY 55X/Fhih6ga6BUfMNrv2e4uWavKT77AGWNdqgmae9RTSdISzCmHy0balgErtPimJ TaJdYgkJ3VVrpP/i5fIRAwNl8GmYHc9mzNMppH7LdsOYhTM4s91SRQV24Y0YckgZ WByyFTsuwj9t7BlCqQK83+qR+1vUL2mgFXu+DmtYdMZcVEskY5Rt/MoKPXm8/NBi oeaMYwDMTBEx8y6urYl5VkfYNBtV6Q== =zwFs -----END PGP SIGNATURE-----