-----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 debian-9-turnkey-punbb_15.0-1_amd64.tar.gz.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 debian-9-turnkey-punbb_15.0-1_amd64.tar.gz 7e41020c8b743879d4c0f69e0b99c31866e7515c540ddc8e9005a25a9fa29abd debian-9-turnkey-punbb_15.0-1_amd64.tar.gz $ sha512sum debian-9-turnkey-punbb_15.0-1_amd64.tar.gz 79d5cdd92187697f9b5b58377ca9f817d2b36dc3820611d59c30851f16f6b67c2c4833c2eccf9eecff45b813200037c3d284bd9c02018c9e31b67a95ce8d925e debian-9-turnkey-punbb_15.0-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-punbb_15.0-1_amd64.tar.gz.hash debian-9-turnkey-punbb_15.0-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-punbb_15.0-1_amd64.tar.gz.hash debian-9-turnkey-punbb_15.0-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAluM+9oACgkQhcJelaFu uU00NQf+O8XCIuE7yTAv5V3du7fQRRWdX2dELULqJ75RZDz+gbBJN/KDsujxdleb Bt4oufJEVa97ERRiMnMHc1GriEQK5zKjFXPnYhb3Bb4QgE+0Wm7Epsk2fiic+wdp rjfkCLxBFkFw6DsiPoK+953c7f5kDs0CsDA1m8ZhyS/SHopXn4uw4WgFW8FycW3u +wGq/6hh4uWQ/fUYfugaxt0I5xiPuCPu49bl4FMk+yAfCm+iBL4eNOU0wXEdLets 31jzLSBtL7UmC1Bka1JCIM4pjmdM7qGb7WjagQf6aL/Ebz5HU5ygfdY69knYkr/n 8Tmq6NWfvjoKb/ioMJy9+6/0f6muow== =h+i1 -----END PGP SIGNATURE-----