-----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-phplist-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-phplist-15.0-stretch-amd64.iso b27ecc34a65e118cb16cf0ba31b944dd8d8e1d7da64e4113c8c10425dc446b35 turnkey-phplist-15.0-stretch-amd64.iso $ sha512sum turnkey-phplist-15.0-stretch-amd64.iso b845d6ff6083be535b72bce8e53956eb83f62837b07d7c35ed6afe5040318d70a611f346d85c2582d11162ca55206356d096a344bbf6a1dca71edf8b5e9d7592 turnkey-phplist-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-phplist-15.0-stretch-amd64.iso.hash turnkey-phplist-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-phplist-15.0-stretch-amd64.iso.hash turnkey-phplist-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTwACgkQhcJelaFu uU1wNgf/ZEzBDeLg/7Gt0pbngL4W3vkSxQeGOz//D7fUr2JFxmdTH3mBYkMm4ODJ O78b8a94pm6HBFRI9s7O03OsFqwgHfzceP9X6pSswyyiAIr1/as/pqOQIlDUKCVI d8e6MD929BEylZNFt88HJN5SlhPWOxHhptszleYvecOjjLhSdhhvX8Vsi7Y4iVlc EXP/dnHkiasoqJSBgobaq7x0UL44I+7R0TMHBEDpkwTXcPgDhDInExpSfeWM2xtC Hrhr3BnBkJTQX4riTDiGKdl1l8iZR4I6NWrsVd63oXzYQ3GtyGx8ICp+PThRmEGR keNI2rc6ctQ5T1pbwqZcQClCBqGk5w== =IEpW -----END PGP SIGNATURE-----