-----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-trac-15.0-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-trac-15.0-stretch-amd64.iso 25bd2a319e0fe193f988bcd7dd93028ab15f5c0cb99341a1ac53dcf0a0ecc5c9 turnkey-trac-15.0-stretch-amd64.iso $ sha512sum turnkey-trac-15.0-stretch-amd64.iso f74d9e0254932cddacc9c0a922939114d3bd4fdf59357942d896ed3fb77f99642860f0501853ea84fb285cc5eca1705f321a287e30026e7dbe9000dd15a613e4 turnkey-trac-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-trac-15.0-stretch-amd64.iso.hash turnkey-trac-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-trac-15.0-stretch-amd64.iso.hash turnkey-trac-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlT0ACgkQhcJelaFu uU24qAgAloAIuIKBGitfQa+rApceYLFZ4+IzhofR9+z7RjOJ7iWt3j5HUjGXub9f tIfhraKkfs1Zi4o8Uwrb2dpvyXWkiJrhPWqD83KKYefpu0xC4BdNNWrmT+/zSR9u eNbABLImixJBNCYkXjGhAX6JNEzGroPy1jsPNAvgUr+W9u7Oim5nU5JLHRF6JBOW +Uds6KVlX/xA0jpqh8yxyFs0jyfI8IQzY3bjgTrwW9MTBRQsf4zq36GJpmomxURN H5D9RTHfviGdzbSJ+zl1E0npw7aIAsfqibzn8raI2OBJ0Xw1YpsTn4BfbP0t+FHf HsiJwQtrd48ePKJLXxzdqUJ+r328Mw== =HJft -----END PGP SIGNATURE-----