-----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-phpbb_15.1-1_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-phpbb_15.1-1_amd64.tar.gz 8daaca31fc4aa15a6f137cf9bb852c75f3f6a97a346bc7acb8e04472b17e95b9 debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz $ sha512sum debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz ad262dfe544a603ab00c90ad75f45906dd5621ffec6a4014398c6bcd40e301506df5638088724528ff7939d43fe0b4982b6ffc6df68bdeb760bd0705ae7949d5 debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz Note, you can compare hashes automatically:: $ sha256sum -c debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz.hash debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz: OK $ sha512sum -c debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz.hash debian-9-turnkey-phpbb_15.1-1_amd64.tar.gz: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/phEACgkQhcJelaFu uU3pMQgApL5oC5kc1mMhVdNYA9p1JScYU5Q3tORCkZVz9goINEW2o4+M3LRLn01F WEHL8trQGlVADWMJOpi9jdgd5SBNmMN6vvJHHbeKsG7yBJMiibreKndfpbwpgcQd 4fpr+VDStIHSm3dg2ULlx3YjrvJK//KDXxMz1JqSxVS9pbJyVzfjCVF2GcCT+qeu dKVu0DN43txImh0//6NK0c2FmriBWdyjC4iRevemp2zSWPjdig+Cd0PCgBuLPBLj /YshyCYNtvAXp3rPnQPE95I3RCawK3tVf5xjBBngWWUaREoVOU4uao/lS6QsWz6l /AkJCskHlT5KNBIdtncC8SWwHBJm3A== =ldyS -----END PGP SIGNATURE-----