-----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-postgresql-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-postgresql-15.0-stretch-amd64.iso c6df944a1ba46d60384ddabd7a47db7d6d557153a045a8384727fdff7b9b32e3 turnkey-postgresql-15.0-stretch-amd64.iso $ sha512sum turnkey-postgresql-15.0-stretch-amd64.iso fb651545f64ee92064ca13688b51169ecbaedd721318bd1ac90f818ecbc922d68dcdff83cf0fb000e47057ce5fbf20407c8dbeabad585791d717fb13335976f6 turnkey-postgresql-15.0-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-postgresql-15.0-stretch-amd64.iso.hash turnkey-postgresql-15.0-stretch-amd64.iso: OK $ sha512sum -c turnkey-postgresql-15.0-stretch-amd64.iso.hash turnkey-postgresql-15.0-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAltMlTwACgkQhcJelaFu uU2JSAf+L0NDHs6bWk9xvNGjuMbI5+n/aGaZhbXgNs72VPEO6B5aTPq8QwVVKnpT ijjNX9yErDxBxc+2STASUNdx1xZDJslWk5tbUIaw59DpNCm1QADkV2qqfXQm1blf HW3NJZIRIWwrltFj/Q4SUcRRt3NMubuHUdP/HD0kn0esjhWJMHcoq2WLfLB8D1jf qtyLJJL3y5DyDdq2fY5ibOuNJGuNjkUqmzCk8r7n2ZkvrNjZZDZBEJ7eT0pMIdbH Neodwcb95vn4W9gCc0G0otN1VgX2+dBVZHeoWzqp2TJLh931KMQ/nnUDqnOtkwdc qkd2TRLlC9ul6PxsGrL+hmiLEVXcyg== =6fD+ -----END PGP SIGNATURE-----