-----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-processmaker-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-processmaker-15.0-stretch-amd64.iso 13469b0aa35477b8bffa20864a10f9c13aac4970184fecadce622b40e92818d3 turnkey-processmaker-15.0-stretch-amd64.iso $ sha512sum turnkey-processmaker-15.0-stretch-amd64.iso 206fae76345a2a531e7573113bc5296aa24541b8e931f597381fafbaff83046b53471ed0cc077d76c177b8b100580b3b9d430619b7493f78fd5c63bbfdee4ce1 turnkey-processmaker-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-processmaker-15.0-stretch-amd64.iso.hash turnkey-processmaker-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-processmaker-15.0-stretch-amd64.iso.hash turnkey-processmaker-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTwACgkQhcJelaFu uU0pMAgAmph/ZCZHYbc0wCAR3CN7cZtTPXrYp2IVwa8Wn63ytPi0RPcMsKxh3OMV vFwRcFaE8/hRcYdBSrD5c0Lg908zkKd/13zBKTLVidG6JMNGB6Ro6SudKyWvlt5F IR5fUJ/25MyL93RWULmbkC3FKiob6H1qaWpGy3PsVy5ZvZV3pvw+Uka4FYdEr067 Uf/7+fdvxmXwK2PiJScNv2ez1xiGyBSrAnZ9xADvAWj25OTkXLlfvdYz8oQsthvz DMktBUYbpg2SR3E7lVQ6L+KF2xnB9s1JhwUx4Mx6xSQHUl0orUw+3no/kxbluzuV HTUT7nLi8YepbPnzdELjzt6EYD8nNA== =agPZ -----END PGP SIGNATURE-----