-----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-asp-net-apache-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-asp-net-apache-15.0-stretch-amd64.iso 545dfc76d06d2f864025c4a77b970621e88c90db6d85bb75a3d8704675ef01de turnkey-asp-net-apache-15.0-stretch-amd64.iso $ sha512sum turnkey-asp-net-apache-15.0-stretch-amd64.iso a638f03c113f9c4e0c9daa79fb17d755404056e0ff0583ef66d7d2e156e6d6388fe560388171fe2313857cd5f36b6442e01739416fe5b9b316c301c659cfa11e turnkey-asp-net-apache-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-asp-net-apache-15.0-stretch-amd64.iso.hash turnkey-asp-net-apache-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-asp-net-apache-15.0-stretch-amd64.iso.hash turnkey-asp-net-apache-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluD9TUACgkQhcJelaFu uU1TJwgA3Af5VVFxEV4ehVWTt0/LcxUfI7Re2k6D4H/uNBNwcKH/lNB3wREYxeXS pdw784RLgTwGM7OKor3hgEsL2vKc8Hq+TOVvOqoozWLICqqajTEocnfSusTtBQzC B0O8QmrzRqtRZlEphJZObQkyz8SR9n08/KysNTHUl9QIJMixQ0ReAp10BmBE3T9M JhBDfYqkjODwN5bGNEg2KIBmOESkTaEkmzZfMxVyWj9IKYxFzMMSkMFQCoBXTOw9 RidPZFXBeMHAvjFCc8aMTF7UK4QjHllv8kxaBPtsTh5RWwQ6Z/K/TscRXTCGbOgT 0Z+OQYr0i4m+05w+7+6tUH1QksZOTQ== =8H7e -----END PGP SIGNATURE-----