-----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-nextcloud-14.2-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-nextcloud-14.2-jessie-amd64.iso 1d5096197372954538faee928bdf00c49b761067bdd2a7bc0fe7f362b0592115 turnkey-nextcloud-14.2-jessie-amd64.iso $ sha512sum turnkey-nextcloud-14.2-jessie-amd64.iso 1a0ef5f6045b72349e7b8b1985d6c483558db8c10d8f60f21b8b32e26f8d2bff8dd4f7f578126d44407d6e632bb37ed8abcd3bbbd2c9c2eba6afbff218ebad75 turnkey-nextcloud-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-nextcloud-14.2-jessie-amd64.iso.hash turnkey-nextcloud-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-nextcloud-14.2-jessie-amd64.iso.hash turnkey-nextcloud-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZIVn5AAoJEIXCXpWhbrlNkn4IAJ/RGJgwX+SH5YewTYzdbCCz qc4+rixhAq2O6U4kcE7uNYFIQIEetFGQe+gBJuWC0dBVz8Yc46zdDuj/ut/m2a12 u2vCyf0o33e702VR5gFWcMl7zLpng8vTtHBOBiHpWkOBLq5FmNpgC5B7qBTZye8s vvuSoFjRckDZlqJ7fuaxBYZHuHqzYts91ow6JLeQ9nJlt7/gVWRgdMRt7XyA70fg KnzzV9zs8qg1oOGRcw9XF7c9i2aGuBa6/D/b2xoZ8Xx4aLKMhQI5rR0dU1an+k5w cl4UKOBEg584bCgMPqG/EdfwlACqjNQjEkzl8RCo3sAUdq1UHkQs9xmbUUXEVSQ= =ux9o -----END PGP SIGNATURE-----