-----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-yiiframework-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-yiiframework-15.1-stretch-amd64.iso 88f9ec42b7a2792aae9aa2a56eeae1bef46153e93b201c6e4c2f8e7efd8a48fb turnkey-yiiframework-15.1-stretch-amd64.iso $ sha512sum turnkey-yiiframework-15.1-stretch-amd64.iso 435b48608ef800bdd5200d83673844e876bef2fd4dd577d08edb3b75b308625ec7d6ce49304a3533ea901e8da03c841fa5b451c55a8d61173629d382fbd18a20 turnkey-yiiframework-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-yiiframework-15.1-stretch-amd64.iso.hash turnkey-yiiframework-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-yiiframework-15.1-stretch-amd64.iso.hash turnkey-yiiframework-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pkAACgkQhcJelaFu uU3/fgf/byN450gi8uUM0XXF/A0obp7Qs4m4sgiTOK3Kbcyw5GUTlEpb/S72YOF/ MV9b3zvNKNtVFeEFtReBaVb1er4ScWPX7AOjcTXzXnbfN5cJAUg6A7sUA5ViQXST wByLInUszhOR57XTt+4pn00VfWhfMWzI9yOoQ6TD5UqSPWPk4yV1IF3Rwh3wGo7o B7x0syhm+sil28Qg46uUWpdbWXZCN7iH3C1MvNioBQNqUCy8NGkKzN3F+U7vy4S9 UBmRpef0ErwWyQXjm2cY6Xe6ZJaEpV8xDks2YkQJzyN+lEPCmWH1EqnD8wx9upKG /+cY6gVV3Evouxa3FmZYbSZ4MrxjXA== =isBg -----END PGP SIGNATURE-----