-----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-simplemachines-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-simplemachines-15.0-stretch-amd64.iso
      a47999d51d40a561499975907b109f4a970fa79ed921dc4001731d1b46283b37  turnkey-simplemachines-15.0-stretch-amd64.iso

    $ sha512sum turnkey-simplemachines-15.0-stretch-amd64.iso
      9abb289a2e0624568cdaea66e9d62c4c7cac20dcd274484f1214f944681f41a9fad9e7ba338a50a05b0793da7d304d7d26bef19463f79dcae48a5b43d58bf8fc  turnkey-simplemachines-15.0-stretch-amd64.iso

   Note, you can compare hashes automatically::

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

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

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

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nyx4fKUxdeF+boqON/CM9CXGgW5YBRBhbs8rXLJCYhH61/98HzZwYGFmyW2x87i/
rdQPM62GWuiJqPLRYDftQCPDocuNaSd7STF6VqlKdDTlhiecuLC9mPVO9erwX917
q11oaQdUmlRK7SHbUNvakR1CbUpk6AzQH0OC77h3cHKZ9PYcCuC5m10KSkbZpb1Y
4w8uWShQJU7gzPPRifh0GsYp2+kLX5XCyT4LkLIiy6BcZMhoKBXNi20XY+f0tHuj
mCcuyEVuwYu8K+hE3TMbuco7Z+0fsA==
=ZnHS
-----END PGP SIGNATURE-----