-----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-tomcat-apache-15.1-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-tomcat-apache-15.1-stretch-amd64.iso cb47d350f939cc8d1f667922885f56d4797a1ba3da0c5631a6092427cc3a057c turnkey-tomcat-apache-15.1-stretch-amd64.iso $ sha512sum turnkey-tomcat-apache-15.1-stretch-amd64.iso 5354d7062dbbcbc3cd0b7da4ba665691f6989aeb24db8d0f3c8168b72d6b7ac97876112ee946905649fa6f181ce36c7ffedd691849c982f049d921172b4148c6 turnkey-tomcat-apache-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-tomcat-apache-15.1-stretch-amd64.iso.hash turnkey-tomcat-apache-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-tomcat-apache-15.1-stretch-amd64.iso.hash turnkey-tomcat-apache-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pjsACgkQhcJelaFu uU0lmQgAyvDRSLUdEe76DmB/Z822fW7nO+wsWipRl1p+ioaMGYdfXOsD5Jp/ZlG3 wtJtAEI1EJpb4rFZsSMr8TDVnrJxOqQF4o/CMLJbO4Ehs0NlsCzX1RQeP02afvMe 8LQ9Q0Rf8HVHtMaqmN9gwo6zJIGY31L8e1I3xWHJOOsv9se/UzIct3GfAevy0e/i tHHnsaJGfvvKh7JuuLCU0BCZPnE2UegNim6txAOLBV5GLa5ieiUsTrivyGVh3BWn 0ZotoAHMMhz/HRxzOHSIOGvmJ2cSWdYZLaIcdRBptasxr1xIUYhyFR/oPOyQGHnO bqm3Od8SaAaYLLXTcIVcr01sXmtyBQ== =5ot9 -----END PGP SIGNATURE-----