-----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-web2py-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-web2py-15.1-stretch-amd64.iso aa9695a43ee2fb5d1eb8f400659427f2ad8d3613b51ac61316bf70a3e52d1232 turnkey-web2py-15.1-stretch-amd64.iso $ sha512sum turnkey-web2py-15.1-stretch-amd64.iso 27893b14c3463e80a1eb5bba02a2c9e18090817a16daa0a6c1d7b3e776ca155f00463b08afed8b9981f95e5d6b48b9d1032ee7a33172e1e6da2be6cbc0654aff turnkey-web2py-15.1-stretch-amd64.iso Note, you can compare hashes automatically:: $ sha256sum -c turnkey-web2py-15.1-stretch-amd64.iso.hash turnkey-web2py-15.1-stretch-amd64.iso: OK $ sha512sum -c turnkey-web2py-15.1-stretch-amd64.iso.hash turnkey-web2py-15.1-stretch-amd64.iso: OK -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEaUz/JnlaKbrge061hcJelaFuuU0FAlv/pj4ACgkQhcJelaFu uU1fWAf+ML+Zj0I0CvAvJgU/hgo6plKmaxOnyACTvCTeKQij/k6w74xOUTxtj9cb t8PLCcSyklf5US3OGPg7Un5c/nQ47Hprv+93EzPxzZMXXejdSqsf8B+3n/yeYY/r Jh+9UMl9q8BruaXTT5DN+7bieSvy2x6M2RVG8koLnzvMohVYCLDOWzSdihi042Vy HYJjy2UhEKUFgjKKGFlzAcwGdT8BsIdkwKcST9oKUptc73yFnbCWkgtuqLfhJD8K cjisDi/GiW9hvQG2Vc9niYt21v39kgEBukXbz5dZ9YI8qaVq7X38ofo2ma57nNfi 3drWAPXV/0sxkLJgrzVzIeM58NGPnA== =C//d -----END PGP SIGNATURE-----