-----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-b2evolution-14.2-jessie-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-b2evolution-14.2-jessie-amd64.iso c35853de7abea32efad882e510bf517409f1be35b6839ca80a0ca38f6a512cdc turnkey-b2evolution-14.2-jessie-amd64.iso $ sha512sum turnkey-b2evolution-14.2-jessie-amd64.iso 906c804990fa3c6b69f7bacff82c70c7a3aa4c4012799736cfef309ba9e170af7186226efc963b23902661bcd56ec09a7d39d05bcc9d6c204ea949578dee3d8b turnkey-b2evolution-14.2-jessie-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-b2evolution-14.2-jessie-amd64.iso.hash turnkey-b2evolution-14.2-jessie-amd64.iso: OK $ sha512sum -c turnkey-b2evolution-14.2-jessie-amd64.iso.hash turnkey-b2evolution-14.2-jessie-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEcBAEBCAAGBQJZIVnyAAoJEIXCXpWhbrlN+8IIAJ3Ud3KMV6mO8dQCBvo/Qr0G 2veKswRmS5djfmLItx1CG5pzLEEHAzc+ID42O0H3mmsb+MCZ/z7Aq3BrxOj4Zda8 zlE7tOsy/VPOnmy5Ituy0xF+b36r9K6L5/SOk2PJAzAsEmnKXkrtPgRyTKZYli+q m7cu5JdjyjSy2qzILUwrz+AlXjT62Lp91exQK8R3o/fRVbp3L5bEcPVtk6vBI2r3 rhRXVxqQPKHK6prUrVbX4XW+s/7NjRk7GVVLxNoZ85V+yYckPRPszpWYwfZ0w3WC URrjzxo621rpVeEyaj9MmjkQ+Yi6vXwFRcLi5ECu8QsPAA55PXZkWEn8fKAw0GE= =CaUh -----END PGP SIGNATURE-----