-----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-gitlab-15.1-stretch-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-gitlab-15.1-stretch-amd64.iso 693151167cb782f2c55e6ef66742a4894e3d2c737e2e6ad601e70487002a6c4c turnkey-gitlab-15.1-stretch-amd64.iso $ sha512sum turnkey-gitlab-15.1-stretch-amd64.iso 718d601d07179e66d117be1b32363d9dffe2c5dfc103738bad29bdb264a72743a32ad514a7c5d97b0cb2aa5839f98d425e970c2f2525b81f7e8a4fd0038e3919 turnkey-gitlab-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-gitlab-15.1-stretch-amd64.iso.hash turnkey-gitlab-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-gitlab-15.1-stretch-amd64.iso.hash turnkey-gitlab-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/piEACgkQhcJelaFu uU0aogf/arGfEoY9O+zAHVyRxAb4Eqpo+Uq8BgyVGibduLAyFGG2abrK43erOvDr oOYQvg4xoTAOVPShcnc5+KmMV/K3/4R+P5nnsGuZ43RhY+uH34pUNav4E4MSLjKq MyxBfaRUNaE6Ufsj7FDU13Q0OjmB6K97OSoWK0dZoF7qHAMGn9WVLHrv06Yu1i+3 iwYtd/t52aBE0H91V90/I6iw6ZNTuaPdnGnGHql9AKKCZZ+MENM9qf9hoc2b1tds tCnagsEuDl3nGfEQIWB5H9grMs3UrnwgfpzmStzKf95vffXxDoOPyRNdNVVGveZG RjzsGGgGpLI/TaQlzoJA2/4DNkDueg== =GoBb -----END PGP SIGNATURE-----