-----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-15.0-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-15.0-stretch-amd64.iso 6e26bbf1e78d876c21dcdc10dce4e44db104f8f6ba4945700bf27555ba4ef218 turnkey-gitlab-15.0-stretch-amd64.iso $ sha512sum turnkey-gitlab-15.0-stretch-amd64.iso 0b274f7462e3e0b842a5702c7a88de8192c1448ef400daff816073a76921c2449d75f309442b462cb1791700ce58cebdaf055d35bde1b5a382e692594386bad6 turnkey-gitlab-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-gitlab-15.0-stretch-amd64.iso.hash turnkey-gitlab-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-gitlab-15.0-stretch-amd64.iso.hash turnkey-gitlab-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlvITPMACgkQhcJelaFu uU14lwf/S98w9fP4sqMXfuKiakXna9ppnsm7slH3c9aUeSpBR1ENH4zvWKt5HszG QSiV5Nbu+arhFCLDSm4CGi469q6dasDhPCj3zp4ieKccHye1lc9lo29MInafEBXX KeQ7UYIFUcBMcRoMe27a5LCRymjNP8IrrCHqAvo1vA7z4qWQyFsUiRuM3lGeR95I r6qFO3xIqn5lZE42Qc9+3pD0HzIF/3QHbItr4b2h3Rk/Z6GP8HYNP/kG+8Cwm45g 0vXodQg+ugQt3TEieLK3DLIm5DR0PSN7DUHvr7qZvsztTHvkbD7K3wwEu7wX5pN0 4MFWtmrj44irHmHsKockO3C924x39g== =4w7N -----END PGP SIGNATURE-----