-----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-codeigniter-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-codeigniter-15.1-stretch-amd64.iso 852f807a184745f317feb98a24419bc978ca0c1b7b0ab1e4ddca9a2d20729d9e turnkey-codeigniter-15.1-stretch-amd64.iso $ sha512sum turnkey-codeigniter-15.1-stretch-amd64.iso ec67027cb3936d67086ddc21dee50ac098c246eaa06914582b78e1bdbde68c6f38e638bdcbe592e58b363ccfb87f21806215fa721fa99bc3f7b8312d96ed95bf turnkey-codeigniter-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-codeigniter-15.1-stretch-amd64.iso.hash turnkey-codeigniter-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-codeigniter-15.1-stretch-amd64.iso.hash turnkey-codeigniter-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phgACgkQhcJelaFu uU23RQf+Ius8t/Hc4uRC8s7TJcYT/8DD4fVxIUj6mhqURGE3RJ+byO856vciCcXt XLySYr7XiKNBIt0Wu51fNHtTkTFaEXU23sp5abw2CcmJzLDJpBTXaikN8ZM72p7t AWup/fwBO0LQB1BHG5JoFv2Jfb8EjdFYqMv0c3haC0Dea9RO49laJDsa5fUGIh9k NOMTOq2unddXqV5cWvmSgpMsu0zXISrwyPmkAMRyvJ9FtFQYo+9/IWf8/thpwUkK 2FtCylVtcBBRP4vnczm4hU+p5qUtstW7lxdHHoC6RBJuacI+AakdhzSERB4QvUoh YOy2ZOOg70Pe2Rac87UQfdRAfkGCUw== =+9T6 -----END PGP SIGNATURE-----