-----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 <release@turnkeylinux.com>

    $ gpg --verify turnkey-collabtive-15.0-stretch-amd64.iso.hash
      gpg: Signature made using RSA key ID A16EB94D
      gpg: Good signature from "Turnkey Linux Release Key <release@turnkeylinux.com>"

    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-collabtive-15.0-stretch-amd64.iso
      20fe54f0e05251091344808d0e7588662bf867840c8f70d4e9ab56850146017b  turnkey-collabtive-15.0-stretch-amd64.iso

    $ sha512sum turnkey-collabtive-15.0-stretch-amd64.iso
      2d317fe1fe65b47e836b8245fbaa7764aa90ba6b1d3ea584224b657051e302f81e8495a2cc604483e48ff19079ccec9a0f583b51883580ee2a5b5f2555fdb94f  turnkey-collabtive-15.0-stretch-amd64.iso

   Note, you can compare hashes automatically::

    $ sha256sum -c turnkey-collabtive-15.0-stretch-amd64.iso.hash
      turnkey-collabtive-15.0-stretch-amd64.iso: OK

    $ sha512sum -c turnkey-collabtive-15.0-stretch-amd64.iso.hash
      turnkey-collabtive-15.0-stretch-amd64.iso: OK

-----BEGIN PGP SIGNATURE-----

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uU3CXQf+LHSOQDL+gh73IbhKVKBwTA79LlE1jzskiypIuVVc1OX/8rw7U4Yf9DZK
QErNlELxDQNtR777ua0QeQI1UfVxSzwl+MsV4MGnC7l5G38hfkZ2qU/PoSwAVLVr
5FYDmq0U8Y7yDQ8j2yXa07Utb+BFcV1TgT9qRsepsQZZP3dXUYeehnQyljjRT6r+
z3I6SOGm5Wj0xHeB++i6VTY+iLwFzski5k44K9DacKUPL5zQEq4gTN5quOtL4Wtg
rX1gtGedWQpN7zT6R1puqWUFiMkuTi9Lg8l0UQ2xVnO8VyKfESYEHAOpYHf2Qkdt
FRDnH/8rHj4yKq5K1ZorvGFyNvdP2Q==
=9Gzq
-----END PGP SIGNATURE-----